High Working Voltage Research Articles

Cost-effective, long-term aqueous rechargeable hybrid sodium/zinc batteries based on Zn anode and Na3MnTi(PO4)3 cathode

Aqueous rechargeable batteries have promising application in large-scale energy storage owing to their cost-effective, eco-friendly, high safety and good electrochemical performance. An aqueous rechargeable hybrid sodium/zinc battery with Zn anode, Na3MnTi(PO4)3 cathode and 0.5 mol L-1 CH3COONa and Zn(CH3COO)2 mixed electrolyte has been designed for the first time. The battery delivered a reversible and stable capacity of 95.0 mAh g−1 at 1.5 C for 50 cycles with a high and flat working voltage of 1.75 V vs. Zn2+/Zn. Impressively, the battery showed the excellent cycling performance and superior rate capability, which can be cycled at 10.0 C for 2000 cycles with a capacity retention of 93.6% and a reversible capacity of 55.6 mAh g−1 at 30.0 C. Meanwhile, the co-intercalation mechanism of hybrid Na+ and Zn2+ in the cathode is elucidated by cyclic voltammogram, ex-situ XRD, ex-situ XPS and Rietveld refinement analysis. This work gets insight into the charge/discharge processes of hybrid ions for NASICON-structured Na3MnTi(PO4)3, providing a feasible way to design cost-effective, high safety and long-term aqueous rechargeable batteries.

Grounding Method and Working Voltage Influence on Deep Dielectric Charging of Polyimide in GEO Environment

In order to guide the design of effective shielding layer to reduce the risk of dielectric electrostatic discharge in high-power and high-voltage spacecraft under GEO environment, it is necessary to explore the influence of grounding method and the joint action of high working voltage and deposited charge on the deep dielectric charging characteristics. In this article, based on the FLUMIC3 model, the electron flux of GEO environment is calculated, and an assessment method for the dielectric electrostatic discharge risk is established by combining Geant4 and a finite element method. Then, this method is used to calculate and analyze the influence of the grounding method and operating voltage on the electric field distribution of the polyimide under different shielding thicknesses. The results show that increasing the shielding thickness and grounding area can effectively reduce the polyimide internal electric field, and the aluminum shielding safety threshold required under the worst conditions is 2.920 mm; the influence of the working voltage mainly depends on the application method and the voltage value. During the working voltage increase from 100 to 5000 V, assume the working voltage ( V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> ) is applied to one side of the polyimide sample, when the other side is suspended, namely, not grounded (B, V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> -S; C, S- V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> ), the maximum electric field depends on the deposited charge and it does not change with the working voltage; when the other side of the sample is grounded (A, V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> -G; D, G- V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">s</sub> ), the maximum electric field and its distribution are determined by the working voltage and the deposited charge. Within this voltage range, the safety threshold of the aluminum shielding layer needs to reach 4-5 mm. In summary, under high working voltage, the grounding area of the sample can be increased, and the appropriate working conditions can be selected to determine the optimal shielding thickness that can suppress dielectric electrostatic discharge.

Rational Design of Interlayer Binding Towards Highly Reversible Anion Intercalation Cathode for Dual Ion Batteries

Dual-ion batteries (DIBs) with high working voltages and energy densities have gained more and more attention these years. However, general graphitic intercalation compounds (GICs) still require substantial improvements in both cathode practical capacity and structural stability. In this work, rational edge carboxylic anhydride functionality is introduced between carbon layers. One of the advantages is to expand the interlayer stacking, significantly improving active site accessibility and enhancing anion intercalation kinetics. Moreover, it can also serve as strong binding forces within interlayers, which can effectively prevent interlayer exfoliation during repeated anion intercalation/deintercalation. Benefited from this rational design, the carboxylic anhydride functionalized graphitic cathode is able to improve discharge capacity by over 37% with no obvious voltage deduction. Meanwhile the capacity retention of over 80% after 1000 cycles is achieved. Overall, this work reveals an effective way to improve both energy density and longevity of the graphite cathodes for dual ion batteries.

High Oxidation Potential ≈6.0 V of Concentrated Electrolyte toward High‐Performance Dual‐Ion Battery

AbstractDual‐ion batteries (DIBs) show the advantages of high working voltage, cost‐effectiveness, and environmental friendliness, but conventional electrolytes commonly cannot satisfy simultaneously the requirements of wide voltage range and high‐concentration, leading to poor cycling durability and limited energy density. In this work, an electrolyte system with 4.0 m lithium bis(fluorosulfonyl)imide (LiFSI) dissolved in tetramethylene sulfone, which shows merits of i) high oxidation potential ≈6.0 V to enable the insertion/deinsertion of FSI− reversibly at the graphite cathode, ii) dramatically suppressed gas formation under high working voltage, and iii) significantly elevated full‐cell DIB energy density, is developed. The DIB constructed with such an electrolyte is able to exhibit 113.3 mAh g−1 capacity and ≈4.6 V medium discharge voltage at 200 mA g−1, along with 94.7% capacity retention after 1000 cycles. Moreover, this DIB delivers an energy density of ≈180 Wh kg−1 (including electrolyte which contributes to the capacity and electrode materials), one of the best performances amongst the related work on DIBs.

Highly reversible lithiation/delithiation in indium antimonide with hybrid buffering matrix

Sb-based intermetallic materials have been extensively studied as electrodes for lithium-ion batteries (LIBs) owing to the high discharge capacity and acceptable working voltage range. In this study, InSb nanocrystallites were homogeneously distributed and embedded into a combined matrix of amorphous carbon and rutile TiO2 by a facile two-time ball-milling process. The nanostructure of the composite exhibited a favorable synergistic effect of the three components (InSb: high-capacity active material, TiO2: inorganic crystalline robust matrix, and C: carbonaceous amorphous conductive matrix), which not only supplied a buffering network to suppress the volume expansion of InSb during the Li+ ion intercalation/deintercalation process, but also enhanced the ionic/electronic conductivity of the anode material. Consequently, the InSb-TiO2-C anode delivered a long lifespan and remarkable rate performance. In addition, the anode showed a high reversible discharge capacity of 540 mAh g−1 even after 400 cycles at a high current rate of 500 mA g−1. Furthermore, the anode exhibited good capacity retention (87% at 2 A g−1 relative to the capacity at 0.1 A g−1). These results indicate the potential of InSb-TiO2-C nanocomposites for LIBs anode materials.

Strategies for High Energy Density Dual‐Ion Batteries Using Carbon‐Based Cathodes

The rapid‐growing demands for lithium‐ion batteries (LIBs) have raised concerns over lithium's scarcity as well as the scarcity of other materials and components used in LIBs. Tremendous efforts have been dedicated to investigating alternative technologies. Dual‐ion batteries (DIBs) represent an emerging battery technology with an attractive future such as high working voltage and a high‐power density enabled by a “nonrocking chair” operation. Research in DIBs is still at an early stage. The energy density of DIBs remains a challenge to solve, especially in comparison with LIBs. This review highlights current challenges in the research on DIBs from different aspects, including undesirable graphite exfoliation during ions intercalation, limited choices of cathode materials, unstable electrolytes, battery safety, and discusses potential strategies for addressing these challenges. Perspectives for exploring the next‐generation DIBs with high energy density are also provided.

A novel relaxor (Bi,Na,Ba)(Ti,Zr)O3 lead‐free ceramic with high energy storage performance

AbstractEnergy storage ceramic capacitors advance in high power density and working voltage, but challenge in simultaneously large recoverable energy density (Wrec), high energy efficiency (η), and good thermal stability. To achieve this, a novel lead‐free ceramic system (1‐x)(Bi0.5Na0.5)TiO3‐x(BaZr0.3Ti0.7O3) [(1‐x)BNT‐xBZT] was explored by tailoring the ferroelectric relaxor states. The introduction of BZT gradually promotes the transformation of ferroelectric states into relaxor states at around the room temperature for x = 0.3‐0.5 that presents a pinched P‐E loop. The optimized composition of x = 0.45 possesses a large Wrec of up to 2.6 J/cm3 and ultrahigh ƞ of 94%, with only a small variation (±8%) in Wrec and the high ƞ (90%) over a broad temperature range (−30°C to 180°C), demonstrating the superior performances compared to many existing lead‐free ceramics. The remarkable advantages of the novel BNT‐BZT lead‐free ceramics explored in this study are thus promising for the high‐efficiency and temperature‐stable energy storage capacitor applications.

Flexible Antifreeze Zn-Ion Hybrid Supercapacitor Based on Gel Electrolyte with Graphene Electrodes.

Zn-ion energy storage devices employing hydrogel electrolytes are considered as promising candidates for flexible and wearable electronics applications. This is because of their safe nature, low cost, and good mechanical characteristics. However, conventional hydrogel electrolytes face limitation at subzero temperatures. Herein, we report an antifreezing, safe, and nontoxic gel electrolyte based on the poly(vinyl alcohol) (PVA)/Zn/ethylene glycol system. The optimal gel electrolyte membrane exhibits a high ionic conductivity (15.03 mS cm-1 at room temperature) and promising antifreezing performance (9.05 mS cm-1 at -20 °C and 3.53 mS cm-1 at -40 °C). Moreover, the antifreezing gel electrolyte can suppress the growth of Zn dendrites to display a uniform Zn plating/stripping behavior. Also, a flexible antifreezing Zn-ion hybrid supercapacitor fabricated with the optimum antifreezing gel electrolyte membrane exhibits excellent electrochemical properties. The supercapacitor possesses a high specific capacity of 247.7 F g-1 at room temperature under a high working voltage of 2 V. It also displays an outstanding cyclic stability at room temperature. Moreover, the supercapacitor shows an extraordinary electrochemical behavior and cyclic stability over up to 30 000 cycles at -20 °C under a current load of 5 A g-1, demonstrating its outstanding low-temperature electrochemical performance. Besides, the antifreezing supercapacitor device also offers high flexibility under different deformation conditions. Therefore, it is believed that this work provides a simplistic method of realizing the application of flexible antifreezing Zn-ion energy storage devices in a subzero-temperature environment.

High‐ionicity fluorophosphate lattice via aliovalent substitution as advanced cathode materials in sodium‐ion batteries

AbstractAs a cathode for sodium‐ion batteries (SIBs), Na3V2(PO4)2F3 (NVPF) with 3D open framework is a promising candidate due to its high working voltage and large theoretical capacity. However, the severe capacity degradation and poor rate capability hinder its practical applications. The present study demonstrated the optimization of Na‐storage performance of NVPF via delicate lattice modulation. Aliovalent substitution of V3+ at Na+ in NVPF induces the generation of electronic defects and expansion of Na+‐migration channels, resulting in the enhancement in electronic conductivity and acceleration of Na+‐migration kinetics. It is disclosed that the formed stronger NaO bonds with high ionicity than VO bonds lead to the significant increase in structural stability and ionicity in the Na+‐substituted NVPF (NVPF‐Nax). The aforementioned effects of Na+ substitution achieve the unprecedented electrochemical performance in the optimized Na3.14V1.93Na0.07(PO4)2F3 (NVPF‐Na0.07). As a result, NVPF‐Na0.07 delivers a high‐rate capability (77.5 mAh g−1 at 20 C) and ultralong cycle life (only 0.027% capacity decay per cycle over 1000 cycles at 10 C). Sodium‐ion full cells are designed using NVPF‐Na0.07 as cathode and Se@reduced graphene oxide as anode. The full cells exhibit excellent wide‐temperature electrochemical performance from −25 to 25°C with an outstanding rate capability (96.3 mAh g−1 at 20 C). Furthermore, it delivered an excellent cycling performance over 300 cycles with a capacity retention exceeding 90% at 0.5 C under different temperatures. This study demonstrates a feasible strategy for the development of advanced cathode materials with excellent electrochemical properties to achieve high‐efficiency energy storage.image

Controllable synthesis of LiNi1/3Co1/3Mn1/3O2 electrode material via a high shear mixer-assisted precipitation process

Layered LiNixCoyMnzO2 materials are the promising cathodes for high-energy–density batteries owing to their high capacities and high working voltages. However, the controllable synthesis of LiNixCoyMnzO2 through a green and scalable method is still a great challenge. From the viewpoint of chemical process intensification, this work proposed a high shear mixer (HSM) assisted-coprecipitation method, aiming to controllably synthesize LiNi1/3Co1/3Mn1/3O2 via intensified micromixing in pure water. The effects of micromixing on the structure, morphology and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 were investigated experimentally. A computational fluid dynamics (CFD) technology was also carried out to understand the relative mechanism between micromixing and the properties of LiNi1/3Co1/3Mn1/3O2. Both experimental and numerical results indicated that the HSM could generate an intensified and homogeneous micromixing during the crystal nucleation and growth process, which is beneficial for the preparation of LiNi1/3Co1/3Mn1/3O2 with uniform morphology, small size and narrow distribution. Spherical LiNi1/3Co1/3Mn1/3O2 particles with an average size of 236 nm were successfully synthesized by this HSM-assisted precipitation strategy, which delivers superior discharge capacity of 98 mAh g−1 and excellent cycling stability of 78.5% after 200 cycles at 3200 mA g−1. We believe this green synthetic approach not only exhibits prospects for large-scale production but also could be extended to prepare other materials beyond the present work.

In Situ Induced Surface Reconstruction of Single-Crystal Lithium-Ion Cathode Toward Effective Interface Compatibility.

LiNixCoyMn1-x-yO2 (x ≥ 0.5) layered oxide materials are generally considered as one of the most prospective candidates for lithium-ion battery (LIBs) cathodes due to their high specific capacity and working voltage. However, surface impurity species substantially degrade the electrochemical performance of LIBs. Herein, surface reconstruction from layered structure to disordered layer and rock-salt coherent region together with a uniform Li2CO3-dominant coating layer is first in situ constructed on the single-crystal LiNi0.5Co0.2Mn0.3O2 (NCM) material by a simple water treatment procedure. The unique surface structure is elucidated by Ar-sputtering-assisted X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (spherical aberration-corrected-scanning transmission electron microscopy (STEM), high-resolution transmission electron microscopy (HRTEM), and TEM). Meanwhile, neutron powder diffraction (NPD) indicates that the antisite defect concentration is mitigated in the treated materials. The modified samples display superior cycle stability with a capacity retention of up to 87.5% at 1C after 300 cycles, a high rate capacity of 151 mAh g-1 at 5C, an elevated temperature (45 °C) cycling property with 80% capacity retention (4.5 V), and improved full-cell performance with 91% after 250 cycles at 1C. Importantly, postmortem examination on the cycled cathodes by time-of-flight secondary-ion mass spectroscopy (TOF-SIMS), XPS, TEM, and X-ray diffractometer (XRD) pattern further demonstrate that these results are mainly attributed to the thin cathode electrolyte interface (CEI) film and low solubility of transition-metal ions. Therefore, this expedition provides an opportunity to construct an effective armor for the interface compatibility and stability of LIBs.

High-Performance and High-Voltage Supercapacitors Based on N-Doped Mesoporous Activated Carbon Derived from Dragon Fruit Peels.

Designing the mesopore-dominated activated carbon electrodes has witnessed a significant breakthrough in enhancing the electrolyte breakdown voltage and energy density of supercapacitors. Herein, we designed N-doped mesoporous-dominated hierarchical activated carbon (N-dfAC) from the dragon fruit peel, an abundant biomass precursor, under the synergetic effect of KOH as the activating agent and melamine as the dopant. The electrode with the optimum N-doping content (3.4 at. %) exhibits the highest specific capacitance of 427 F g–1 at 5 mA cm–2 and cyclic stability of 123% capacitance retention until 50000 charge–discharge cycles at 500 mA cm–2 in aqueous 6 M KOH electrolytes. We designed a 4 V symmetric coin cell supercapacitor cell, which exhibits a remarkable specific energy and specific power of 112 W h kg–1 and 3214 W kg–1, respectively, in organic electrolytes. The cell also exhibits a significantly higher cycle life (109% capacitance retention) after 5000 GCD cycles at the working voltage of ≥3.5 V than commercial YP-50 AC (∼60% capacitance retention). The larger Debye length of the diffuse ion layer permitted by the mesopores can explain the higher voltage window, and the polar N-doped species in the dfAC enhance capacitance and ion transport. The results endow a new path to design high-capacity and high-working voltage EDLCs from eco-friendly and sustainable biomass materials by properly tuning their pore structures.

A Review of Emerging Dual‐Ion Batteries: Fundamentals and Recent Advances

AbstractDual‐ion batteries (DIBs), based on the working mechanism involving the storage of cations and anions separately in the anode and cathode during the charging/discharging process, are of great interest beyond lithium‐ion batteries (LIBs) in high‐efficiency energy storage due to the merits of high working voltage, material availability, as well as low cost and excellent safety. Despite the progress achieved, the practical applications of DIBs are still hindered by negative issues, such as limited capacity and cyclic stability, which triggers the development of suitable electrode materials with highly reversible capacities, and corresponding electrolytes with high oxidative stability as well as sufficient reaction kinetics of active ions. Herein, in this article, a systematic and comprehensive review of fundamentals and recent advances in current DIBs with subcategories of cathode materials, anode materials, and electrolytes are presented. In particular, their energy storage mechanisms, as well as their respective features, are dissected. Furthermore, some strategies and perspectives are proposed for facilitating the further development of DIBs in the future.

Amorphous Carbon Nano-Interface-Modified Aluminum Anodes for High-Performance Dual-Ion Batteries

Dual-ion batteries (DIBs) are one of the promising candidates to meet the low-cost requirements of commercial applications because of their high working voltage, excellent safety, and environmental...

Investigation on the electrochemical performance of hybrid zinc batteries through numerical analysis

With the rapid expansion of the electric vehicle market, the demand for advanced energy storage technologies is increasing strongly. An alkaline hybrid zinc battery with cobalt oxide as the positive electrode material combines the advantages of the high working voltage of Zn–Co batteries and the excellent discharge capacity of Zn–air batteries simultaneously. However, the development of hybrid zinc batteries is limited by their low energy efficiency and poor cycling stability. To investigate the charge–discharge behaviors of hybrid zinc batteries, a mathematical model is established, coupling the mass transport inside the porous electrode with energy conversion. Then, the effects of discharge depth, reaction interfaces, and active material degradation on energy efficiency are investigated through numerical analysis. It is found that within a proper region, the higher ratio of two-phase and three-phase interfaces can lead to higher energy efficiency, and the increase of the two-phase interfaces is beneficial for improving energy efficiency. While the effects of active material degradation on energy efficiency are significant, resulting in poor cycling stability. This work is favorable for the design of interfaces and the selection of operating conditions, and guides the performance improvement of hybrid zinc batteries.

Multi‐Ions Electrolyte Enabled High Performance Voltage Tailorable Room‐Temperature Ca‐Metal Batteries

AbstractCalcium metal batteries, as one of the promising alternatives beyond Li‐metal technology, is held back by the lack of suitable cathodes of considerable energy storage capability, and Ca anodes of long‐term stability and lower polarization potentials for Ca‐plating/stripping. Here, by recycling cellulose waste paper, feasible cathodes for Ca‐metal batteries of good high‐voltage and wide‐window‐voltage adaptability (0.005–4.9 V versus Ca/Ca2+), and impressive energy density (≈517.5 Wh kg−1 at 0.1 A g−1) are developed. Meanwhile, through tailorable Ca‐plating/stripping potentials (∆V ≈ 0.65 V) realized by a modified electrolyte of Li+, Ca2+, , and multi‐ions system, the proof‐of‐concept Ca‐metal batteries not only delivered enhanced storage capability (101 mAh g−1 versus 51 mAh g−1 at 0.1 A g−1 in the window voltage of 2.0–4.7 V) and cycling stability (≈77% capacity retention for 100 cycles), but also simultaneously show a high output average working voltage of ≈3.2 V. The work provides a hint that mixed metal deposition under multi‐ions electrolyte system may address the challenging issues faced by single alkali or alkaline‐earth metal batteries.

Improved Cycling Performance of P2-Na0.67Ni0.33Mn0.67O2 Based on Sn Substitution Combined with Polypyrrole Coating.

P2-Na0.67Ni0.33Mn0.67O2 presents high working voltage with a theoretical capacity of 173 mAh g-1. However, the lattice oxygen on the particle surface participates in the redox reactions when the material is charged over 4.22 V. The resulting oxidized oxygen aggravates the electrolyte decomposition and transition metal dissolution, which cause severe capacity decay. The commonly reported cation substitution methods enhance the cycle stability by suppressing the high voltage plateau but lead to lower average working voltage and reduced capacity. Herein, we stabilized the lattice oxygen by a small amount of Sn substitution based on the strong Sn-O bond without sacrificing the high voltage performance and further protected the particle surface by polypyrrole (PPy) coating. The obtained Na0.67Ni0.33Mn0.63Sn0.04O2@PPy (3.3 wt %) composite showed excellent cycling stability with a reversible capacity of 137.6 (10) and 120.0 mAh g-1 (100 mA g-1) with a capacity retention of 95% (10 mA g-1, 50 cycles) and 82.5% (100 mA g-1, 100 cycles), respectively. The present work indicates that slight Sn substitution combined with PPy coating could be an effective approach to achieving superior cycling stability for high-voltage layered transition metal oxides.

Improving the performance of lithium ion capacitor by stabilizing anode working potential using CoSe2 nanoparticles embedded nitrogen-doped hard carbon microspheres

Lithium-ion capacitors (LIC) have problems such as the imbalance of electrochemical kinetics between the battery-type anode and the capacitive cathode, and the large change in the working potential of the hard carbon anode during charge and discharge, which limit the improvement of electrochemical performance for LIC. To solve these problems, CoSe2 nanoparticles embedded nitrogen-doped hard carbon microspheres (NCS-CoSe2) are synthesized and used as the anode material of LIC. Electrochemical tests show that NCS-CoSe2 has a reversible specific capacity of as high as 500 mAh g−1 at a current density of 1 A g−1, which can effectively stabilize the working potential of the anode. At a high working voltage window of 2.2–4.5 V, the potential change of the NCS-CoSe2 anode is as low as 0.35 V, significantly smaller than that of the pure hard carbon (0.87 V). Regarding the electrode kinetics, the NCS-CoSe2 anode is matched with the active carbon cathode well. When the power density rises sharply from 335 W kg−1 to 6700 W kg−1, the energy density of NCS-CoSe2//AC LIC can attain 82 Wh kg−1 (56.9% of initial energy density).

A 1D–3D interconnected δ-MnO2 nanowires network as high-performance and high energy efficiency cathode material for aqueous zinc-ion batteries

Aqueous zinc‐ion batteries (AZIBs) have received significant research attention and widely investigated because of their high intrinsic safety and cost effectiveness. Manganese dioxide has been regarded as a promising cathode material for AZIBs, attributed to its friendliness, abundant resources, high theoretical capacity, and high working voltage. Herein, a unique one-dimensional–three-dimensional (1D–3D) hybrid network with interconnected δ-MnO2 nanowires was reported as a cathode material for AZIBs. A distinctive 3D nano network structure resulted in enhancement of electrolyte osmosis and significant increase in contact between electrode and electrolyte, and also provided more active sites and convenient rapid ion transport routes. Moreover, the fine nanowire structure and the optimum layer spacing resulted in easier insertion/deinsertion of ion in the active material. Taking advantage of this feature, the δ-MnO2 cathode provides high reversible capacity, fast rate capability and good longevity for cycling. Further kinetic experiments revealed that Zn/δ‐MnO2 system constitutes an electrochemical reaction regulated by the combination of ionic diffusion and pseudo-capacitance; and shows high energy efficiency during the charge/discharge states. This research may provide an advanced cathode material for AZIB development.

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi0.5Mn1.5O4

AbstractLithium‐ion batteries (LIBs) are currently widely applied in many aspects of life, but with the development, the capacity of lithium‐ion batteries can no longer meet the needs. One of the dominant factors to restricting the capacity of LIBs is the cathode materials. Among the derivatives of spinel cathode LiMn2O4 (LMO), LiNi0.5Mn1.5O4 (LNMO) has become one of the research promising cathode materials in the current LIBs due to its high working voltage (4.7 V) and large theoretical specific capacity (147 mAh g−1). However, the short cycle life of LNMO during the electrochemical process limits its large‐scale commercial applications. Thus, it is necessary to summarize and discuss the recent development of LNMO. Through comparison with LiMn2O4, the structure, electrochemical properties of LNMO, influence of Mn on the performance of LNMO, and the capacity fading mechanism are analyzed and discussed in detail. We also summarize the modification methods of LNMO and the influence of preparation methods on the structure and performance of LNMO. Finally, some prospects of LNMO cathode are put forward. This Review article can provide helpful references for future design and construction of LNMO.