MnO2 Electrode Research Articles

Comparative study on the electrochemical property of Mn3O4 electrode material synthesised using chemical techniques

Comparative study on the electrochemical property of Mn3O4 electrode material synthesised using chemical techniques

Chitosan as carbon skeleton for enhancing the high capacitive performance of Mn3O4 electrode for supercapacitor

Chitosan as carbon skeleton for enhancing the high capacitive performance of Mn3O4 electrode for supercapacitor

Porous Carbon Used as Reserved Interspace for Long Cycling Stability of Nanostructured MnO Electrode Materials

Porous Carbon Used as Reserved Interspace for Long Cycling Stability of Nanostructured MnO Electrode Materials

Understanding the Role of Manganese Sulfate As an Electrolyte Additive for Aqueous Zinc Ion Battery

As energy demand escalates, there is a concurrent rise in the utilization of fossil fuels, exacerbating environmental challenges. To solve this challenge and achieve sustainable development, extensive research into renewable energy options is being conducted. Unlike conventional energy sources, renewable energies like solar and wind power exhibit fluctuations. Thus, effective utilization of these sources necessitates the development of energy storage systems to ensure a reliable and consistent energy supply. Among them, rechargeable batteries have been regarded as the most favorable candidate for energy storage systems because of their long cycle life, low pollution, portability and high efficiency. Of these, lithium-ion batteries (LIBs) have long held sway in the commercial rechargeable battery market, thanks to their high energy density and extended cycle life. However, several limitations obstruct their further progress. The safety concerns arising from toxic, volatile, and flammable electrolytes pose a significant challenge. Additionally, rising lithium prices can be another obstacle. These challenges have spurred researchers to investigate alternative batteries characterized by low cost, high safety, and extended cycle life. One such promising option is the aqueous zinc-ion battery (AZIB), garnering significant interest owing to its notable benefits, including high capacity and the low redox potential of zinc metal. Moreover, the stability of zinc metal in water, in contrast to the highly reactive nature of lithium, enables the use of aqueous electrolytes, enhancing safety considerably. Among various cathode materials for ZIBs, manganese-based options stand out for their high capacity, suitable working voltage, and excellent theoretical capacity, positioning them as compelling choices. However, the MnO2 electrode often suffers from capacity degradation over cycling, primarily due to manganese dissolution. Previous studies suggest that the role of Mn2+ additive in electrolytes is that it inhibits the dissolution of manganese cathode based on Le Chatelier's principle. However, gaining a comprehensive understanding of the inhibition mechanism has been challenging due to the presence of manganese species not only in the electrolyte but also in the cathode material. In this paper, we use a simplified cell design to address this limitation. Prior to qualitative analysis, we manipulate three distinct factors to optimize conditions for subsequent experiments. Under the set conditions, qualitative analysis can be conducted using X-ray diffractometry (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and infrared spectroscopy. Furthermore, to assess their impact on electrochemical properties, cyclic voltammetry (CV) and Galvanostatic Charge/Discharge (GCD) tests are performed. This discovery is noteworthy as it challenges conventional understanding. Previous research suggested that adding Mn2+ to the electrolyte enhances cycle stability by preventing manganese dissolution. Our findings laid the groundwork for uncovering the role of the Mn2+ additive.[1] M.H. Alfaruqi, V. Mathew, J. Gim, S. Kim, J. Song, J.P. Baboo, S.H. Choi, J. Kim, Electrochemically induced structural transformation in a γ-MnO2 cathode of a high capacity zinc-ion battery system, Chem. Mater. 27 (2015) 3609-3620[2] K. Lu, B. Song, Y. Zhang, H. Ma, J. Zhang, Encapsulation of zinc hexacyanoferrate nanocubes with manganese oxide nanosheets for highperformance rechargeable zinc ion batteries, J. Mater. Chem. A. 5 (2017) 23628-23633

(Invited) Extrinsic and Intrinsic Methods to Increase the Rate Performance of MnO2 Electrodes

MnO2 is one of the most well studied pseudocapacitive material for aqueous supercapacitors owing to the surface and near surface-confined redox processes. However, due to its poor electronic conductivity, a large amount of conducting additive, needs to be added to achieve high-rate charge storage. Since the conducting additive does not contribute much to the specific capacitance, this leads to decrease in total energy density of the cell in terms of both mass and volume. In addition, polymeric binders are also necessary to fabricate rigid electrode with good contact.As an alternative to these typical conductive binders and polymer binders, we have studied the possibility of using RuO2 nanosheets as a novel inorganic binder with polymeric properties, high electronic conductivity and excellent pseudocapacitive properties. For example, by adding a small amount of RuO2 nanosheets to particulate MnO2, a large synergetic effect is observed leading to a high utilization of MnO2 pseudocapacitance.1 The optimized amount of RuO2 in the composite was 13 wt%, which is much lower than the amount generally used for conductive carbon additives. The size of nanosheet binders also affects the properties of the electrode. Using MnO2 nanosheets and RuO2 nanosheets with different lateral sizes, it has been shown that larger sized nanosheets affords better conductive binder properties through a better electronic conduction network structure.Asides from using conductive binders, heterogeneous doping can increase the intrinsic conductivity of MnO2. We have shown that Ir-doped Birnessite shows faster redox behavior than pristine MnO2 and this enhanced kinetics are reflected on the exfoliated nanosheets. These properties can be discussed based on the electronic interaction between Mn and Ir.The pseudocapacitive performance of MnO2 can also be manipulated by inducing cationic defects in Birnessite. Low temperature annealed MnO2 with higher number of defects shows higher specific capacitance at low rate, albeit at the loss of high-rate performance. This trade-off is discussed based grain-boundary resistance dominating the rate performance. Acknowledgments This work was supported in part by ISHIFUKU Metal Industry Co., Ltd. and a Japan Science and Technology Agency Program on Open Innovation Platform with Enterprises,Research Institute and Academia (JST OPERA JPMJOP1843).

Layered Manganese Dioxide Intercalated with Copper Ions for Electrochemical Reduction of Nitrate to Ammonia

Electrochemical nitrate reduction reaction (NO3RR) offers a new pathway for low-temperature green ammonia synthesis. Here, we prepared a thin film of layered MnO2, the interlayer of which accommodates Cu2+ ions coordinated with water molecules. The process consisted of electrodeposition of layered MnO2 intercalated with tetrabutylammonium cations (TBA+) by anodic oxidation of aqueous Mn2+ ions in the presence of TBA+, followed by ion exchange of the initially incorporated bulkier TBA+ with the Cu2+ ions in solution. The resulting layered MnO2 intercalated with Cu2+ ions (Cu2+/MnO2) supported on a FTO substrate was applied to electrochemical NO3RR. In the potentiostatic reduction at –0.7 V vs RHE in NaOH electrolyte, the Cu2+/MnO2 electrode catalyzed NO3RR with higher faradic efficiency for ammonia formation than Cu plating electrode. X-ray diffraction spectroscopy indicated that the structure of layered MnO2 was maintained during NO3RR. In addition, linear sweep voltammogram and X-ray photoelectron spectroscopy suggested the electrochemical reduction of the Cu2+ ions between MnO2 layers and in situ generation of metallic Cu particles prior to NO3RR. Figure 1

Boron doping induced manganese oxide local metallicity for optimising intrinsic conductivity and supercapacitor performance

Poor electrical conductivity, a crucial issue in applying manganese oxides as electronic materials, has been mentioned in nearly all related research work. A universal optimization scheme for intrinsic conductivity is lacking among solutions. In this study, boron with a strong Lewis acidity was selected as a doping source to modulate the electronic structure of manganese oxide. Boron, a commonly-used p-type doping element, has an unclear doping mechanism for transition metal oxides. Based on the first principles, all doping possibilities were investigated, finding boron atoms can most easily enter the lattice interstice. Importantly, after boron atom doping, the material generates a density of state at the Fermi level, resulting in the overlap of the valence and conduction band, forming a partial occupation band. The material changes from semiconductor properties to metallic properties and the electrical conductivity is significantly optimized. To verify the scheme feasibility, boron-doped Mn3O4 was synthesized through the hydrothermal and the charge transfer resistance of sample Mn-B-4 is 46 % lower than that of undoped Mn3O4 electrodes. Further exploration of boron doping effects was conducted by using supercapacitor tests which are strongly influenced by conductivity. Mn-B-4 exhibited better rate performance and cyclic stability as a supercapacitor electrode. The positive effects of boron doping on the electrical conductivity of manganese oxides were demonstrated through both theoretical calculations and experiments. This study will provide a general solution reference for large-scale modification and application of manganese oxide and would contribute to the promotion of the related electronic materials field.

Assessment of simultaneous removal of salt and dye by utilizing capacitive deionization and UV-electro oxidation hybrid process in saline wastewater treatment

In this research, the goal was simultaneous elimination of salt (NaCl) and dye (C·I Acid Orange 7 or AO7) through integration of capacitive deionization (CDI) technique with UV-based electrochemical advanced oxidation process (UV-EAOP). To optimize salt adsorption capacity (SAC) of MnO2 electrode, Taguchi's experimental design methodology was employed to fine-tune synthesis parameters, including bath temperature, current density, and precursor concentrations. BiOCl was synthesized and implemented as an anode to bolster AOP's effectiveness. Several experiments were conducted to analyze the effects of applying the combined AOP and CDI. The findings revealed that parameter optimization improved SAC, and the application of UV irradiation decreased electrode's SAC. Furthermore, it was observed that AO7 could enhance SAC while lowering salt adsorption rate (SAR). More importantly, the combined application of CDI and AOP resulted in superior pollutant removal efficiency and improved SAC, despite reduced SAR. Finally, color was entirely eliminated after 90 min, and the generated species were recognized by GC–MS. Additionally, a possible pathway for AO7 degradation was suggested based on the generated species.

Augmentation Of The Supercapacitive Performance Of Mn3O4 Nanoparticles By Doping Ni

Ni-doped Mn3O4 nanoparticles (NMO) with a morphology facilitating high surface area were synthesized by prudent hydrothermal synthesis, manifesting a supercapacitive tone with high specific capacitance and excelling cyclability. NMO nanoparticles were agglomerated from hydrated manganese chloride, hydrated nickel chloride, and sodium hydroxide precursors. The XRD results demonstrated predominant peaks oriented from (211), analogous to the I41/amd space group tetragonal structure. The Raman studies affirmed the bonding characteristics of vibration and bending modes of the Mn-O bond. The SEM inquiries proclaimed the morphology providing a large surface area. EDAX reports infer the elemental composition for phase purity confirmation of elements Mn, O, and Ni. Electrochemical accusation exhibited a pseudocapacitive character through cyclic voltammetry. The GCD deductions evince a specific capacitance of 565 F/g for Mn3O4 electrodes and 626 F/g for 0.6% NMO electrodes at a specific current of 0.5 A/g. These NMO electrodes achieved a cyclic capacitance rate of 82% after 3600 cycles.

Development of Polymer Composite Membrane Electrolytes in Alkaline Zn/MnO2, Al/MnO2, Zinc/Air, and Al/Air Electrochemical Cells.

This paper reports on the novel composite membrane electrolytes used in Zn/MnO2, Al/MnO2, Al/air, and zinc/air electrochemical devices. The composite membranes were made using poly(vinyl alcohol), poly(acrylic acid), and a sulfonated polypropylene/polyethylene separator to enhance the electrochemical characteristics and dimensional stability of the solid electrolyte membranes. The ionic conductivity was improved significantly by the amount of acrylic acid incorporated into the polymer systems. In general, the ionic conductivity was also enhanced gradually as the testing temperature increased from 20 to 80 °C. Porous zinc gel electrodes and pure aluminum plates were used as the anodes, while porous carbon air electrodes or porous MnO2 electrodes were used as the cathodes. The cyclic voltammetry properties and electrochemical impedance characteristics were investigated to evaluate the cell behavior and electrochemical properties of these prototype cells. The results showed that these prototype cells had a low bulk resistance, a high cell power density, and a unique device stability. The Al/MnO2 cell achieved a density of 110 mW cm-2 at the designated current density for the discharge tests, while the other cells also exhibited good values in the range of 70-100 mW cm-2. Furthermore, the Zn/air cell consisting of the PVA/PAA = 10:5 composite membrane revealed an excellent discharge capacity of 1507 mAh. This represented a very high anode utilization of 95.7% at the C/10 rate.

3D printing and micro-spring architecting to reconcile ultra-high areal and volumetric energy density in highly loaded supercapacitors

The rigorous demand for significantly enhanced performance gains in metrics of areal and volumetric energy density from futuristic energy storage devices is driving current technological endeavors towards the design of highly-loaded energy storage systems. The advancement of supercapacitors has faced a formidable challenge in reconciling ultra-high areal (>1 mWh cm−2) and volumetric performance (>10 mWh cm−3) due to the intricate issue of efficient mass transport in a highly loaded environment. Here, the capability of 3D printing technology to architect open frameworks is well leveraged in conjunction with material interface decoration to create a heavily loaded pseudocapacitive MnO2 electrode of low structural tortuosity and fast surface reaction. By harnessing the potential of self-assembly, a robust electrode composed of ubiquitous micro-springs is developed, permitting elastic strain engineering that exceptionally augmented the volumetric performance while preserving efficient mass transport pathways for reasonable kinetics. Coupling with these features, a groundbreaking achievement is attained as an individual supercapacitor unit now boasts an unprecedented ultrahigh areal energy density of 2.83 mWh cm−2 and volumetric energy density of 37.3 mWh cm−3. The proposed strategy provides an informative roadmap benefiting the construction of next-level electrochemical energy storage devices.

Cyclodextrin-assisted synthesis of nanostructured manganese oxide cathodes for high-performance aqueous Zn-ion batteries

Secondary aqueous zinc batteries (AZIBs) have gained substantial interest recently because of their excellent safety, affordability, and minimal ecological footprint. This study introduced a novel approach for synthesizing MnO2 using a straightforward one-step hydrothermal method in the presence of β-cyclodextrin and was employed as a cathode material for secondary AZIBs for the first time. The study systematically investigated the influence of β-cyclodextrin concentration on the morphology, crystal orientation, and electrochemical properties of MnO2 electrodes. The research found that varying the concentration of β-cyclodextrin resulted in different nanostructured MnO2 morphologies, namely δ-MnO2 and α-MnO2. This is the first time such distinct morphologies have been linked to β-cyclodextrin concentration. According to our experimental findings, the optimal β-cyclodextrin concentration for this study was 1.0wt%. The optimized 1.0wt%-CDM electrode exhibited an impressive discharge capacity of 205.2 mAh g-1 and 177.2 mAh g-1 when operated at 0.5 A g-1 and 1 A g-1, respectively. Notably, the 1.0wt%-CDM electrode maintained an impressive capacity of 129.2 mAh g-1 even after 1000 cycles, surpassing the performance of the pristine δ-MnO2 electrode (14.8 mAh g-1). This research highlights the potential of MnO2 nanostructures as promising candidates for developing commercial electrode materials.

Shape Matters: Understanding the Effect of Electrode Geometry on Cell Resistance and Chemo-Mechanical Stress

Rechargeable batteries that incorporate shaped three-dimensional electrodes have been shown to have increased power and energy densities when compared to a conventional geometry, i.e. a planar cathode and anode that sandwich an electrolyte. Electrodes can be shaped to enable a higher active material loading, while keeping ion transport distances small. However, the relationship between electrical and mechanical performance of shaped electrodes remains poorly understood. Many electrode designs have been explored, where the electrodes are individually shaped or intertwined, and advances in manufacturing and shape/topology optimization have made such designs a reality. Here, we explore sinusoidal half cells and interdigitated full cells. First, we use a simple electrostatics model to understand the cell resistance as a function of shape. We focus on low-temperature conditions, where the electrolyte conductivity decreases relative to that of the electrode; here, LiPF6 EC:DMC electrolyte and MnO2 electrode are considered. Next, we use a chemo-mechanics model to examine the stress that arises due to intercalation-driven volume expansion. We show that shaped electrodes provide a significant reduction in resistance in low-temperature conditions, however, they exhibit unfavorable stress concentrations. Overall, we find that the fully interdigitated electrodes may provide the best balance with respect to this resistance-stress trade-off.

Synthesis of Nano-Wall Like MnO2 Electrode Material by Electrodeposition Method for Enhanced Capacitive Properties

Synthesis of Nano-Wall Like MnO2 Electrode Material by Electrodeposition Method for Enhanced Capacitive Properties

Mn-Based Transition Metal Oxide Positive Electrode for K-Ion Battery Using an FSA-based Ionic Liquid Electrolyte

Layered Mn-based transition metal oxides have gained interest as positive electrode materials for K-ion batteries due to their high capacity, excellent structural stability, and abundant resources. However, their practical utility is significantly hindered by insufficient electrochemical performances during operations. This study reports the successful synthesis of P3-K0.46MnO2 via the solid-state method and investigates its charge–discharge behavior as a positive electrode working in an FSA-based (FSA= bis(fluorosulfonyl)amide) ionic liquid electrolyte at 298 K. The K0.46MnO2 electrode demonstrates superior performance compared to previously reported K x MnO2 counterparts, delivering a reversible discharge capacity of about 100 mAh g−1 at a current density of 20 mA g−1 and a capacity retention of 68.3% over 400 cycles at 100 mA g−1. Ex situ X-ray diffraction analyses confirm the occurrence of reversible structural changes during the charge–discharge process. Further, we explore potassium storage mechanisms through ex situ synchrotron soft X-ray absorption spectroscopy. Spectra obtained in Mn L-edge region suggest that Mn is reversibly oxidized and reduced during K+ deintercalation and intercalation processes. Remarkably, discharging the electrode below 2.3 V induces reversible formation of Mn2+ from Mn3+/4+ on the electrode surface. The study demonstrates superior electrochemical performance of K0.46MnO2 positive electrode for K-ion battery using ionic liquid electrolyte.

Performances of MnO2 and SnO2 Coated MnO2 as Cathode Materials for Aqueous Rechargeable Zinc-ion Batteries

In this study, the micro-emulsion method was used to create the manganese-based cathode materials MnO2 and MnO2@SnO2. For the use as cathode materials in rechargeable zinc-ion batteries, MnO2 and SnO2 coated MnO2@SnO2 were synthesized. FT-IR, Powder X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray Spectroscopy (EDS), and UV-visible Spectroscopy were used to characterize the as-prepared materials. Electrochemical impedance spectroscopy (EIS), battery charge-discharge (BCD), and cyclic voltammetry (CV) techniques were used to investigate the electrochemical properties of the prepared cathode materials for aqueous rechargeable zinc-ion batteries (ARZIBs). The CV profiles were measured in the potential range of 2.1-1.0 V at a scan rate of 20 mV/s. A pair of redox peaks can be seen in the cycle of CV curves. Charge/discharge cycles of SnO2 coated MnO2@SnO2 electrodes are higher than those of pristine MnO2. SnO2 coated MnO2@SnO2 electrodes have better initial charge/discharge capacities than pristine MnO2 electrodes, which is a factor to take into account. In the first cycle, SnO2 coated MnO2@SnO2 electrode has a 26% higher charge capacity than the bare MnO2 electrode. The SnO2 coating on MnO2 may be the cause of the enhanced charge and discharge capabilities of MnO2@SnO2. J. of Sci. and Tech. Res. 5(1): 83-92, 2023

Unveiling the mass-loading effect on the electrochemical performance of Mn3O4 thin film electrodes: A combined computational and experimental study

Abstract The remarkable storage performance of manganese oxide (Mn3O4) makes it an appealing option for use as electrodes in electrochemical capacitors. However, the storage kinetics were significantly influenced by the mass loading of the electrode. Herein, we have inspected the dependency of mass loading on the storage performance of the spray pyrolyzed Mn3O4 thin film electrodes along with the correlation of structural and morphological characteristics. X-ray diffraction and Raman spectroscopic studies proven the formation of spinel Mn3O4 with a tetragonal structure. Morphological analysis revealed that all films exhibited fibrous structures with interconnected patterns at higher mass loadings. Moreover, the surface roughness and wettability of the electrode surface were influenced by variations in mass loading. Notably, thin-film electrode with a mass loading of 0.4 mg/cm2 exhibited the highest specific capacitance value of 168 F/g at 5 mV/s in a three-electrode system. Further, electrochemical impedance spectroscopic studies showed that there were noticeable changes in the capacitive behaviour of the electrode with respect to variations in mass loading. Moreover, the Dunn approach was employed to differentiate the underlying storage mechanism of the Mn3O4 electrode. Additionally, first-principles Density Functional Theory (DFT) studies were carried out in connection with the experimental study to comprehend the structure and electronic band structure of Mn3O4. This study underscores the critical importance of mass loading for enhancing the storage performance of Mn3O4 thin-film electrodes.

Synthesis and electrochemical characterizations of RGO-decorated MnO2 nanorods/carbon cloth-based wearable symmetric supercapacitors

The current research explores a facile two-step method for fabricating flexible RGO-decorated MnO2 nanorod electrodes on a carbon cloth substrate, ideal for wearable energy storage devices. The strategy involves first depositing MnO2 nanorods on the carbon cloth utilizing a hydrothermal technique, followed by a simple ex-situ decoration with reduced graphene oxide by varying concentrations. Through comprehensive physical and electrochemical analyses, the impact of different concentrations of graphene oxide on the physical and electrochemical characteristics of MnO2 electrodes is thoroughly examined. Among the investigated concentrations of graphene oxide, the RGO-decorated MnO2 electrode featuring a 20 mg/100ml concentration of graphene oxide showcased the maximum specific capacitance reaching 1072.28 F/g at a 5 mV/sec in a 1M Na2SO4 electrolyte. Furthermore, this electrode demonstrated commendable long-term cycle stability, preserving over 87% of its original capacitance after enduring 2000 cycles of charge and discharge. A symmetric prototype supercapacitor device has been constructed to assess their practical utility utilizing symmetric electrodes and an aqueous electrolyte. This symmetric device exhibits promising electrochemical properties, underscoring the potential of the developed electrodes for real-world implementation. The remarkable structural, morphological, and electrochemical characteristic attributes of RGO-decorated MnO2 nanorods grown on the carbon cloth substrate position them as superior electrode materials tailored for the burgeoning realm of wearable energy storage devices, paving the way for advanced flexible and efficient energy storage solutions.

Exploration of Local-Structure and Electrochemical Supercapacitive Performance of Hydrothermally Synthesized α-Fe2O3@Mn3O4@G Composite Electrodes

Due to growth in human population and upsurge in the energy needs, researchers have concentrating on the development of novel/advanced electrode materials. Batteries and supercapacitors (SCs) are most significant energy storage technologies present in contemporary gadgets like smartphones, medical equipment’s, electronic devices etc. However, in comparison to SCs, batteries have higher energy densities and lower power. To increase the energy density of SCs, researchers are engaging on developing hybrid SCs based on low-cost metal oxides/carbon based composite electrodes. Herein, we apply a hydrothermal approach to synthesize graphene supported iron and manganese oxide composite for SCs for the first time. The crystalline structure, phase purity, surface morphology, chemical bonding states, elemental composition of the synthesized samples were characterized by XRD, TEM, FE-SEM, XPS and EDS analysis. In addition, XAS (XANES and EXAFS) technique is used to examine the local structure of the composite samples. After confirming all the basic characterizations, the SC electrodes were constructed using synthesized samples, exhibiting a maximum specific capacitance of about 410 F/g at 5 mV/s and 800 F/g at 1 mA/cm2 in an aqueous electrolyte, which is quite higher than that of pristine Fe2O3, pristine Mn3O4, and Fe2O3-Mn3O4 composite electrodes. Furthermore, even after 2,000 cycles, the graphene composite electrode exhibits a capacitance retention of roughly 85% and a coulombic efficiency of nearly 80%. Furthermore, an asymmetric SC device was designed employing graphene composite as the positive electrode and AC as the negative electrode and investigated their performance using CV, GCD, and EIS analyses, These SC device exhibits extraordinary device performance. As a result, the present study provides a new path to fabricate affordable and flexible SC devices for use in real time applications in near future.

Stable Cycling of Ultrahigh Mass Loaded MnO2 for Low-Cost Sodium-Ion Batteries

Achieving cost-effective and sustainable solutions for large-scale energy storage is critical for advancing the global clean energy transition. The intermittent nature of green energy underscores the inadequacy of current large scale energy storage technologies like pumped hydroelectricity which is susceptible to geographic and water resource constraints, making batteries a prime candidate for this role. Although lithium-ion batteries (LIBs) with high energy and power density are a viable solution, the high cost and uneven distribution of lithium reserves limits the widespread application of LIBs for grid energy storage. Considering these developments and the challenges posed by limited lithium reserves, sustainable and low-cost sodium-ion batteries (SIBs) emerge as a promising alternative.Among the various battery electrode materials, manganese dioxide (MnO2) stands out as a promising choice for large-scale energy storage applications due to its earth abundance, cost-effectiveness and non-toxic nature. Although MnO2 is known as a pseudocapacitive material with superior cycling stability in aqueous electrolytes, its dissolution in non-aqueous electrolytes has restricted its widespread use in long lifetime batteries. In this study, we demonstrate that an ether-based electrolyte solution (1M NaClO4 in diglyme) is able to achieve stable cycling of electrodeposited ε-MnO2 as a cathode for SIBs, reaching a over 75% capacity retention over 1000 cycles. This response surpasses conventional ester-based electrolytes (58% of 1M NaClO4 in EC/PC). A comparative cycling stability study, coupled with electrochemical quartz crystal microbalance characterization, validates the efficacy of the ether-based electrolyte in mitigating MnO2 dissolution. Furthermore, the integration of 3D printed graphene aerogel (3D GA) as a scaffold for electrodeposited MnO2 leads to enhanced electrochemical performance of the MnO2 electrode (3D MnO2/GA), resulting in a high areal capacity of 4.4 mAh cm-2 at a current density of 10 mA cm-2. The 3D MnO2/GA electrode possesses scalable electrochemical performance with mass loadings from 20 mg cm-2 to 80 mg cm-2. Using this electrode, a high mass loaded sodium-ion battery (SIB) device was fabricated by using utilizing 58 mg cm-2 3D MnO2/GA as the cathode and 16 mg cm-2 dip-coated TiO2@Cu foam as the anode. This MnO2 | TiO2 device delivered a notable areal capacity of 6.2 mWh cm-2 and a high areal power density of 70.7 mW cm-2. Moreover, the SIB device demonstrates 85% capacity retention after 500 cycles, underscoring the stable cycling of this high-energy and power-density SIB device.