Aqueous Rechargeable Lithium-ion Batteries Research Articles

Synthesis and electrochemical studies of 1,1’-binaphthyl-2,2’-diol for aqueous rechargeable lithium-ion battery applications

The constant increase in the utilization of lithium-ion batteries (LIBs) in various field applications, including electrical vehicles and electronic devices, has led researchers to focus on their multiple path developments to obtain new electrode materials. The practical development of these electrode materials, based on organic and inorganic moieties, is challenging for various groups of LIB scientists. The concept of organic electrode materials is highly competitive with inorganic electrode materials because of the accessibility of more active sites with structural diversity, high energy and power density, environmental friendliness potential sustainability, and low cost. Herein, 1,1’-binaphthyl-2,2’-diol (BINOL) is investigated as an organic electrode material that contains two hydroxyl groups that act as active centers. The oxidative coupling process is employed to synthesize BINOL and so obtained product was characterized by using FT-IR, 1H-NMR and MASS techniques. The electrochemical investigations were carried out using sat. Li2SO4 electrolytic medium at three-electrode cell system. The Cyclic voltammetry (CV) has provided information on the anodic behavior of the material and its stability studied at different scan rates. The battery performance of the cell BINOL | Sat. Li2SO4 | LiMn2O4 by galvanostatic charge-discharge potential limit (GCPL) shows 197/171mAhg−1 specific capacity and 90% columbic efficiency. The electrochemical kinetic obtained by potentiostatic electrochemical impedance spectroscopy (PEIS) shows a semi-infinite diffusion process.

Passivated Bi2Se3 electrode in Na2CO3 solution to improve anode efficiency in aqueous Li-ion batteries

Efficient anode materials are crucial for the success of aqueous rechargeable lithium-ion batteries (ALIBs) since many materials degrade significantly during electrochemical reactions. In this study, the modification of Bi2Se3 with Na2CO3 was explored to enhance the charge–discharge characteristics of the anode. The passivated Bi2Se3 electrode exhibited improved electrochemical performance, maintaining high charge and discharge capacities of 816 mAh·g−1 after the 5th cycle and 570 mAh·g−1 after the 100th cycle with stable Coulombic efficiency of 98.0 ± 1.2 %. Charge-discharge profiles and cyclic voltammetry revealed the lithium intercalation and deintercalation, while impedance spectroscopy indicated changes in the electrode structure during cycling. These findings highlight the potential of using Bi2Se3 electrodes with a pre-formed surface film to enhance the stability and performance of ALIBs.

Using Pectin for Energy Storage Devices

Wearable and flexible printed electronics are more than ever in demand. The value of the flexible electronics market reached USD 26.5 million in 2021 and its revenue forecast will reach USD 63.1 million in 2030.[1] Increasing investments in research & development in these fields have already led to several achievements in the past years. Nevertheless, serious remains concerns about the ecological footprint of such technologies must be addressed early in their conception and throughout the whole electronics life cycle.[2]In printed electronics, electrical energy is supplied by energy storage devices, such as batteries. Most of the time, these systems contain polymers that can be used either as electrolyte, e.g., solid polymer electrolyte or gel polymer electrolyte, to facilitate flexible electronics/batteries fabrication or as binders in positive or negative electrodes ensuring the mechanical cohesion within the composite electrodes.[4]. Several characteristics to meet environmental-friendly flexible electronics requirements. Biobased polymers are one of the promising alternatives in this regard. Their general affinity with water makes them suitable for aqueous rechargeable batteries, implying several technologies such as aqueous rechargeable lithium-ion batteries (ARLB) or zinc rechargeable batteries (ZRB). For instance, polymer hydrogel electrolytes have recently been investigated [3]: their strength lies in promising ionic conductivity (> 10-2 S.cm-1) while maintaining a sufficient mechanical strength and elasticity to be adaptable to flexible energy storage devices.In this study, we developed a hydrogel electrolyte made of pectin, a polysaccharide contained in the cell plants’ wall, as an alternative to synthetic polymers in batteries. Hydrophobic interactions and hydrogen bonds, together with bivalent cation interactions, allow the free-standing electrolyte gelation.[5] The gelation mechanism is first studied, using NMR spectroscopy together with thermal analysis. Then, electrochemical characterization is carried out to analyze the ionic conduction pathways of the gel electrolyte. Its electrochemical stability as well as galvanostatic cycling are investigated to figure out its ability to be used as a electrolyte in hybrid device, such as zinc-lithium-ion batteries.Moving toward printed devices requires to take a closer look to the rheological properties of this system as well as its printability: these challenges will be addressed to ultimately develop an understanding of the impact of this material’s processing on the electrolyte and electrodes properties.[6] References [1]. Flexible Electronics Market Size to Hit US$ 63.1 MN by 2030. (May 2022). Acumen Research and Consulting, https://www.acumenresearchandconsulting.com/.[2]. Baran, D.; Corzo, D.; Blazquez, G. Flexible Electronics: Status, Challenges and Opportunities. Frontiers in Electronics 2020, 1, 2673-5857. DOI: 10.3389/felec.2020.594003.[3]. Liu, J.; Yuan, H.; Tao, X.; et al. Recent progress on biomass-derived ecomaterials toward advanced rechargeable lithium batteries. EcoMat 2020, 2 (1), e12019. DOI: 10.1002/eom2.12019.[4]. Bresser, D.; Buchholz, D.; Moretti, A.; Varzi, A.; Passerini, S. Alternative binders for sustainable electrochemical energy storage – the transition to aqueous electrode processing and bio-derived polymers. Energy Environm Sci 2018, 11, 3096-3127. DOI: 10.1039/C8EE00640G.[5]. Chelfouh, N.; Coquil, G.; Rousselot, S.; Foran, G.; Briqueleur, E.; Shoghi, F.; Caradant, L.; Dollé, M. Apple Pectin-Based Hydrogel Electrolyte for Energy Storage Applications. ACS Sustainable Chemistry & Engineering 2022 , Article ASAP . DOI: 10.1021/acssuschemeng.2c04600.[6]. Clement, B.; Lyu, M.; Kulkarni, S. E.; Lin, T.; Hu, Y.; Lockett, V.; Greig, C.; Wang, L. Recent Advances in Printed Thin-Film Batteries. Engineering 2022, 13, 238-261. DOI: 10.1016/j.eng.2022.04.002.

Enhanced electrochemistry of AlPO4 nano-layer-wrapped LiMn2O4 cathode material for an aqueous rechargeable lithium-ion battery

Enhanced electrochemistry of AlPO4 nano-layer-wrapped LiMn2O4 cathode material for an aqueous rechargeable lithium-ion battery

Nanoflowers-like LiTi2(PO4)3 on carbon nanotube fibers as novel binder-free anodes for high-performance fiber-shaped aqueous rechargeable lithium-ion batteries

NASICON-type LiTi2(PO4)3 (LTP) shows tremendous potential for applications in aqueous rechargeable lithium-ion batteries (ARLIBs) due to its three-dimensional open-framework and flat voltage platform. Unfortunately, conventional solid-phase reactions and high-temperature calcination methods are unable to meet the demand for self-standing electrodes for flexible wearable ARLIBs. Herein, we develop a simple and effective one-step solvothermal method to grow nanoflowers (NFs)-like LTP directly on carbon nanotube fibers (CNTFs) as binder-free anodes for fiber-shaped ARLIBs (FARLIBs) without additional high-temperature treatment. Benefitting from the robust adhesion of the active material to the substrate and binder-free feature, the prepared LTP NFs/CNTF anode provides a high reversible volume capacity of 85.2 mAh cm−3 at a current density of 0.4 A cm−3. The quasi-solid-state FARLIB is successfully assembled by binder-free cathode coupling with LiMn2O4 nanowall arrays directly grown on CNTF, achieving a high capacity of 58.3 mAh cm−3 at a current density of 0.4 A cm−3 and exhibiting an encouraging 92.3 mWh cm−3 maximum energy density. This work provides an effective strategy for the design of novel binder-free electrodes for next-generation wearable FARLIBs.

Synthesis and electrochemical investigation of lithium and cobalt dual-doped spinel LNMO nanomaterial as cathode for aqueous rechargeable lithium-ion battery

Synthesis and electrochemical investigation of lithium and cobalt dual-doped spinel LNMO nanomaterial as cathode for aqueous rechargeable lithium-ion battery

Synthesis and Electrochemical Performance of KVO/GO Composites as Anodes for Aqueous Rechargeable Lithium-Ion Batteries.

K0.25V2O5 (KVO) and K0.25V2O5/graphene oxide (KVO/GO) have been successfully synthesized by a chemical coprecipitation method and a subsequent calcination process. The structure and morphology of KVO and KVO/GO were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The as-obtained vanadate and vanadate modified by GO materials were used as anodes with LiMn2O4 as a cathode and saturated LiNO3 as an electrolyte to assemble an aqueous rechargeable lithium-ion battery (ARLB). The cyclic voltammogram curves of both KVO and KVO/GO electrodes exhibited three pairs of redox peaks corresponding to charge/discharge platforms. We found that a small amount of graphene oxide added improved the electrochemical performance more significantly than excess graphene oxide. The as-prepared KVO/GO//LiMn2O4 could not only improve the initial discharge capacity but could also reduce the attenuation at a high current density. Furthermore, the ARLB with a KVO/GO anode exhibited an excellent rate performance and super long cycle life. These good electrochemical properties of this new ARLB system actually provided feasibility for application in large-scale power sources and energy storage devices.

Bi2Se3 Nanostructured Thin Films as Perspective Anodes for Aqueous Rechargeable Lithium-Ion Batteries

In recent years, aqueous rechargeable lithium-ion batteries (ARLIBs) have attracted attention as an alternative technology for electrical storage. One of the perspective battery anode materials for application in ARLIBs is Bi2Se3, which has already shown good perspectives in the application of conventional lithium-ion batteries (LIBs) that use organic electrolytes. In this study, the electrochemical properties of Bi2Se3 thin films with two different layers on the electrode surface—the solid electrolyte interphase (SEI) and the Bi2O3 layer—were investigated. The results of this work show that the formation of the SEI layer on the surface of Bi2Se3 thin films ensures high diffusivity of Li+, high electrochemical stability, and high capacity up to 100 cycles, demonstrating the perspectives of Bi2Se3 as anode material for ARLIBs.

Reducing atmosphere improves the conductivity of NaTi2(PO4)3/C material for hybrid aqueous rechargeable lithium-ion battery anode

Hybrid aqueous rechargeable lithium-ion batteries (HARLIBs) have lower cost and better safety performance than conventional lithium-ion batteries (organic electrolytes). The challenge faced by HARLIBs are the narrow selection of anode and cathode materials, and overcoming the problems of capacity decay of anode and cathode materials in aqueous electrolytes. NaTi2(PO4)3, which has a stable three-dimensional open framework structure, shows certain applicability in HARLIBs, but its inherent low electronic conductivity leads to poor utilization of active materials and inferior rate performance. In this article, we propose an experimental method that can improve the conductivity of NaTi2(PO4)3/C, and study the electrochemical performance of NaTi2(PO4)3/C aqueous half-cell and NaTi2(PO4)3/C||LiMn2O4 hybrid aqueous full cell. The results show that Ti3+/oxygen vacancies can endow NaTi2(PO4)3/C with higher conductivity and improve the specific capacity and rate capability (69 mAh·g−1, 7C). At 1C, the second discharge specific capacity is 98.46 mAh·g−1. After 100 cycles, the Rct was 2.92 × 10−2 Ω. The NaTi2(PO4)3/C//LiMn2O4 full cell can provide a discharge specific capacity of up to 101.07 mAh·g−1. The synthesized NaTi2(PO4)3/C material can be applied to the anode electrode of hybrid aqueous lithium-ion full cell.

Key materials and future perspective for aqueous rechargeable lithium-ion batteries

Aqueous rechargeable lithium-ion battery (ARLiB) is of specific importance due to the low-cost, environmental-friendly properties. Recently, its energy denisty and cyclic life have been significantly enhanced, demonstarting the potential for real applications. The improvement on key materials of ARLiB, ranging from cathode, anode and electrolyte, can finally ameliorate coresponding performance of full cell. Hereon, the cathode materials of ARLiBs are summerized as spinel oxides, layered oxides, olivine polyanion compounds olivine and Prussian blue analogues, while anode materials are classified into vanadium-based, polyanion, titanium-based and organic ones. Meanwhile, the strategies for better aqueous electrolytes are discussed from the aspects of salt concentration, solvent and interface. In the last part, issues challenging the commercialization of ARLiBs are provided as well as the suggestions for future research and development. • Key materials for aqueous rechargeable lithium-ion batteries have been reviewed • Electrolytes with wide ESW have been developed for ARLiBs • Among the reported anode materials, NbO 2 is the best for high voltage ARLiBs • Among the reported cathode materials, LiMn 2 O 4 is the best for high voltage ARLiBs

Aqueous electrolyte with moderate concentration enables high-energy aqueous rechargeable lithium ion battery for large scale energy storage

The intrinsic safe and environmentally friendly aqueous rechargeable lithium ion battery (ARLIB) is a promising candidate for large scale energy storage system application. However, the low energy density and limited cycle life hamper its practical application. Here, a deep eutectic electrolyte composed of LiClO4·3H2O and urea with a moderate concentration of 5 M is explored, in which the population of free water molecules is depleted leading to the expanded electrochemical stability window to ∼3.2 V. In addition, the diminished population of free water suppresses the anodic Al dissolution. Combining with graphene coating, the Al current collector exhibits strong corrosion resistant. A Li4Ti5O12/LiMn2O4 battery of 2.2 V using such electrolyte and current collector delivers cycle life up to 1000 times and a high energy density of 135 Wh kg−1. The results open a new avenue to advance high-energy ARLIB, contributing to the low cost and grid-scale energy storage applications.

Ultrafast rate capability of V2O5 yolk-shell microspheres with hierarchical nanostructure as an aqueous lithium-ion battery anode

Aqueous rechargeable lithium-ion batteries (ARLBs) are promising candidates in grid-scale energy storage systems due to their high safety and low cost. However, it remains a major challenge to develop advanced anode materials with favorable specific capacity and long cycle life. Herein, we fabricate V2O5 yolk-shell microspheres with hierarchical nanostructure as anode material of ARLBs. Annealing temperature-dependent experiments are carried out to investigate the evolution of crystallinity, morphology and structure of the samples. As the annealing temperature varies from 300 °C to 350 °C to 400 °C, the building blocks of microspheres gradually change from nanoplates to nanoclusters to larger nanoparticles. The electrochemical performances of different samples are compared and analyzed. In half-cell tests, the sample annealed at 350 °C (VO-350) achieves a high capacity of 258.6 mA h g − 1 at 0.5 A g − 1 and ultrafast rate capabilities such as 149.7 mA h g − 1 at 15 A g − 1. In full-cell tests, the VO-350//LiMn2O4 coin cells exhibit favorable cycle life with a capacity retention of 71.5% after 500 cycles at 1 A g − 1 and ultrafast rate capabilities such as 87.4 mA h g − 1 at 15 A g − 1. In addition, the electrochemical kinetics and energy storage mechanism of V2O5 in ARLBs are investigated.

A hybrid composite of H2V3O8 and graphene for aqueous lithium-ion batteries with enhanced electrochemical performance.

Aqueous rechargeable lithium-ion batteries (ARLBs) are regarded as a competitive challenger for large-scale energy storage systems because of their high safety, modest cost, and green nature. A kind of modified composite material composed of H2V3O8 nanorods and graphene sheets (HVO/G) has been effectively made by a one-step hydrothermal method and following calcination at 523 K. XRD, SEM, TEM, and TG are used to determine the phase structures and morphologies of the composite materials. Owing to the advantage of the layered structure of H2V3O8 nanorods, the excellent conductivity of the graphene sheets, and the 3D network structure of the modified composite, the ARLBs with HVO/G can deliver an adequate specific capacity of 271 mA h g−1 at 200 mA g−1 and have a retention rate of 73.4% after 50 cycles. The average discharge capacity of ARLB with HVO/G as anode has a considerable improvement over that of HVO/CNTs and HVO, whatever the current rate used. Moreover, we find that the diffusion coefficient of lithium-ion increases by an order of magnitude through the theoretical calculation for HVO/G ARLB. The new ARLB with HVO/G electrode is a potential energy storage system with great advantages, such as simple preparation, easy assembly process, excellent safety and low-cost environmental protection.

Synergetic effect of aqueous electrolyte and ultra‐thick millimeter‐scale LiFePO 4 cathode in aqueous lithium‐ion batteries

Aqueous rechargeable lithium-ion batteries (ARLBs) have garnered substantial attention for their desirable properties of safety, environmental compatibility, and rapid ion-transport in the electrolyte compared with organic lithium-ion batteries. However, the low energy density of ARLBs and poor electrochemical stability of the aqueous electrolyte are critical limitations. A proposed means of improving the energy density of ARLBs is the fabrication of thick electrodes, wherein the fraction of active material is increased and that of inactive material decreased without modifying the structure of the electrode. This study describes the construction of ultra-thick millimeter-scale LiFePO4 (LFP) electrodes containing Li2SO4 at various concentrations to control the conductivity of the aqueous electrolyte. The enhanced electrolyte conductivity mitigates sluggish electrochemical behavior by providing high lithium-ion flux even in 2.0 mm-thick LFP electrodes having a capacity of 52 mAh cm−2. A straightforward method of electrode preparation is described. The operation of mm-thick LFP electrodes evaluated with a homemade three-electrode cell shows improved cycle performance and rate capability that are not attainable with organic electrolytes.

(NH4 )2 V7 O16 Microbricks as a Novel Anode for Aqueous Lithium-Ion Battery with Good Cyclability.

Searching for novel anode materials to address the issues of poor cycle stability in the aqueous lithium-ion battery system is highly desirable. In this work, ammonium vanadium bronze (NH4 )2 V7 O16 with brick-like morphology has been investigated as an anode material for aqueous lithium-ion batteries and Li+ /Na+ hybrid ion batteries. The two novel full cell systems (NH4 )2 V7 O16 ||Li2 SO4 ||LiMn2 O4 and (NH4 )2 V7 O16 ||Na2 SO4 ||LiMn2 O4 both demonstrate good rate capability and excellent cycling performance. A capacity retention of 78.61 % after 500 cycles at 300 mA g-1 was demonstrated in the (NH4 )2 V7 O16 ||Li2 SO4 ||LiMn2 O4 system, whereas no capacity attenuation is observed in the (NH4 )2 V7 O16 ||Na2 SO4 ||LiMn2 O4 system. The reaction mechanisms of the (NH4 )2 V7 O16 electrode and impedance variation of the two full cells were also researched. The excellent cycling stability suggests that layered (NH4 )2 V7 O16 can be a promising anode material for aqueous rechargeable lithium-ion batteries.

Chalcone as Anode Material for Aqueous Rechargeable Lithium-Ion Batteries

Chalcone as Anode Material for Aqueous Rechargeable Lithium-Ion Batteries

Enhanced Rate Capability and Cycling Stability of Novel Ammonium Vanadate Materials Used in Aqueous Li-Ion Batteries

Aqueous rechargeable lithium-ion batteries (ARLBs) are considered to be promising alternatives to traditional Li+-ion batteries. Since the advent of the development of ARLB technology, vanadium oxi...

Self-discharge in Li-ion aqueous batteries: A case study on LiMn2O4

Aqueous rechargeable lithium-ion batteries have attracted great attention as an alternative to traditional battery technologies, being able to overcome the issues caused by flammable and expensive organic electrolytes. In particular, LiMn2O4 has reached very fast second-level charge capability by the synthesis of unconventional morphology and particle sizes, allowing charging rates up to 600 C and 93% retention of the capacity after 10,000 cycles. However, the self-discharge process and aging mechanisms for aqueous batteries have been rarely studied, which contrasts with the extensive bibliography of the same phenomena in LMO cells based on organic electrolytes. In this article, the mechanisms involved in the loss of reversible specific charges were studied by diverse techniques like OCV, EIS, and In-situ Raman. The results revealed a more favorable self-discharge process compared with using organic electrolytes owing to the lower stability of water. The self-discharge process can be divided into three different regions with a sequential lower decay rate of voltage and capacity as well as two different evolutions of the electric parameters. This study opens new questions about the nature, composition, and mechanisms of the self-discharge in aqueous media which will play a critical role in the electrochemical performance of novel aqueous Li-ion batteries.

An aqueous rechargeable lithium ion battery with long cycle life and overcharge self-protection

Zn2+ added into electrolyte can effectively suppress H2 evolution. Therefore, a LiMn2O4/NaTi2(PO4)3 full cell exhibits enhanced overcharging performance and excellent cycling stability up to 10 000 cycles.

High-Performance and Ultraflexible Aqueous Rechargeable Lithium-Ion Batteries Developed by Constructing All Binder-free Electrode Materials.

Aqueous rechargeable lithium-ion batteries (ARLIBs) as alternative energy storage devices have attracted tremendous attention because of their low cost and high safety. However, it is still a significant challenge to develop flexible high-performance ARLIBs for powering wearable devices because of the lack of all binder-free electrode materials. In this study, we develop one-step hydro-/solvothermal methods to design binder-free electrodes of LiCoO2 polygonal-sheeted arrays and rugby ball-shaped NaTi2(PO4)3 on carbon nanotube fibers as the cathode (LCO@CNTF) and the anode (NTP@CNTF). Both the electrodes are prepared at low temperatures without an extra calcination process, which is a great improvement for the growth process. The electrodes deliver remarkable capacity and extraordinary rate performance in a saturated Li2SO4 solution. Meanwhile, because of the synergy of LCO@CNTF and NTP@CNTF, an impressive capacity of 45.24 mA h cm-3 and an admirable energy density of 67.86 mW h cm-3 are achieved for the assembled quasi-solid-state fiber-shaped flexible ARLIB (FARLIB), which outperform most reported fiber-shaped aqueous rechargeable batteries. More encouragingly, our FARLIB possesses good flexibility, with a 94.74% capacity retention after bending 3000 times. Thus, this work represents a significant step toward developing FARLIBs and provides a new prospect in the design of wearable energy storage devices.