Investigation and Suppression of Oxygen Release by LiNi0.8Co0.1Mn0.1O2 Cathode under Overcharge Conditions DOI
Chen‐Guang Shi, Xinxing Peng, Peng Dai

и другие.

Advanced Energy Materials, Год журнала: 2022, Номер 12(20)

Опубликована: Апрель 10, 2022

Abstract The safety issue of lithium‐ion batteries is a crucial factor limiting their large‐scale application. Therefore, it practical significance to evaluate the impact overcharge behavior because severe levels oxygen release cathode materials during this process. Herein, by combining variety in situ techniques spectroscopy and electron microscopy, work studies structural degradation LiNi 0.8 Co 0.1 Mn O 2 (NCM811) accompanying It observed that small amount evolves from initial surface at ≈4.7 V. When charging higher voltage (≈5.5 V), large on newly formed due occurrence microcracks. Based experimental results theoretical calculations, determined mainly occurs near‐surface regions, where remaining vacancies accumulate create voids. To suppress release, single‐crystalline NCM811 with integrated structure introduced serves as cathode, which can effectively inhibit morphology destruction reduce activation lattice region. These findings provide basis effective strategy for improving performance Ni‐rich applications.

Язык: Английский

A Review of Degradation Mechanisms and Recent Achievements for Ni‐Rich Cathode‐Based Li‐Ion Batteries DOI Creative Commons
Ming Jiang, Dmitri L. Danilov, Rüdiger‐A. Eichel

и другие.

Advanced Energy Materials, Год журнала: 2021, Номер 11(48)

Опубликована: Ноя. 12, 2021

Abstract The growing demand for sustainable energy storage devices requires rechargeable lithium‐ion batteries (LIBs) with higher specific capacity and stricter safety standards. Ni‐rich layered transition metal oxides outperform other cathode materials have attracted much attention in both academia industry. Lithium‐ion composed of cathodes graphite anodes (or Li‐metal anodes) are suitable to meet the requirements next generation batteries. However, instability poses serious challenges large‐scale commercialization. This paper reviews various degradation processes occurring at cathode, anode, electrolyte cathode‐based LIBs. It highlights recent achievements developing new stabilization strategies battery components future

Язык: Английский

Процитировано

405
In situ inorganic conductive network formation in high-voltage single-crystal Ni-rich cathodes DOI Creative Commons
Xinming Fan, Xing Ou, Wengao Zhao

и другие.

Nature Communications, Год журнала: 2021, Номер 12(1)

Опубликована: Сен. 7, 2021

Abstract High nickel content in LiNi x Co y Mn z O 2 (NCM, ≥ 0.8, + = 1) layered cathode material allows high specific energy density lithium-ion batteries (LIBs). However, Ni-rich NCM cathodes suffer from performance degradation, mechanical and structural instability upon prolonged cell cycling. Although the use of single-crystal can mitigate these drawbacks, ion-diffusion large particles hamper its rate capability. Herein, we report a strategy to construct an situ Li 1.4 Y 0.4 Ti 1.6 (PO 4 ) 3 (LYTP) ion/electron conductive network which interconnects 0.88 0.09 0.03 (SC-NCM88) particles. The LYTP facilitates transport between SC-NCM88 particles, mitigates prevents detrimental crystalline phase transformation. When used combination with metal anode, LYTP-containing SC-NCM88-based enables coin capacity 130 mAh g −1 after 500 cycles at 5 C 2.75-4.4 V range 25 °C. Tests Li-ion pouch configuration (i.e., graphite as negative electrode active material) demonstrate retention 85% 1000 0.5 °C for positive electrode.

Язык: Английский

Процитировано

336
Strain-retardant coherent perovskite phase stabilized Ni-rich cathode DOI
Liguang Wang,

Tongchao Liu,

Tianpin Wu

и другие.

Nature, Год журнала: 2022, Номер 611(7934), С. 61 - 67

Опубликована: Ноя. 2, 2022

Язык: Английский

Процитировано

266
Building Practical High‐Voltage Cathode Materials for Lithium‐Ion Batteries DOI

Jingwei Xiang,

Ying Wei, Yun Zhong

и другие.

Advanced Materials, Год журнала: 2022, Номер 34(52)

Опубликована: Март 25, 2022

Abstract It has long been a global imperative to develop high‐energy‐density lithium‐ion batteries (LIBs) meet the ever‐growing electric vehicle market. One of most effective strategies for boosting energy density LIBs is increase output voltage, which largely depends upon cathode materials. As most‐promising cathodes high‐voltage (>4 V vs Li/Li + ), four major categories including lithium‐rich layered oxides, nickel‐rich spinel and polyanionic compounds still encounter severe challenges realize improvement voltage while maintaining high capacity, fast rate capability, service life. This review focuses on key links in development materials from lab industrialization. First, failure mechanisms kinds are clarified, optimization strategies, particularly solutions that easy large‐scale production, considered. Then, bridge gap between industry, cost management, safety assessment, practical battery‐performance evaluation, sustainability battery technologies, discussed. Finally, tough promising commercialization summarized promote application with densities.

Язык: Английский

Процитировано

234
In‐Depth Analysis of the Degradation Mechanisms of High‐Nickel, Low/No‐Cobalt Layered Oxide Cathodes for Lithium‐Ion Batteries DOI Creative Commons
Steven Lee, Wangda Li, Andrei Dolocan

и другие.

Advanced Energy Materials, Год журнала: 2021, Номер 11(31)

Опубликована: Июнь 24, 2021

Abstract A rational compositional design of high‐nickel, cobalt‐free layered oxide materials for high‐energy and low‐cost lithium‐ion batteries would be expected to further propel the widespread adoption electric vehicles (EVs), yet a composition with satisfactory electrochemical properties has emerge. The previous work demonstrated promising LiNi 0.883 Mn 0.056 Al 0.061 O 2 (NMA‐89) that outperformed cobalt‐containing analogs in cycling stability maintained comparable rate performance thermal stability. Herein, capacity fading mechanism NMA‐89 pouch full cell 4.2 V cutoff is compared its analogs. results reveal particle cracking 0.89 0.055 Co (NMC‐89) 0.053 0.064 (NCA‐89) leads loss active material an increase surface area, thereby exacerbating structural instabilities, accelerating impedance polarization growth, ultimately reducing their retentions. 0.044 0.042 0.013 Mg 0.011 (NMCAM‐89) experience subdued reactions maintain spherical structures, both which are conducive retentions during long‐term cycling. This investigation offers insights into how specific transition‐metal ions dictate high‐Ni cathode materials, highlights benefit Mn‐Al combination NMA‐89, presents potential strategies enhance this novel class materials.

Язык: Английский

Процитировано

130
Origin and regulation of oxygen redox instability in high-voltage battery cathodes DOI
Xiang Liu, Gui‐Liang Xu, Venkata Surya Chaitanya Kolluru

и другие.

Nature Energy, Год журнала: 2022, Номер 7(9), С. 808 - 817

Опубликована: Июнь 2, 2022

Язык: Английский

Процитировано

125
A comprehensive review of foreign-ion doping and recent achievements for nickel-rich cathode materials DOI

Zhuangzhuang Cui,

Xiao Li, Xiaoyu Bai

и другие.

Energy storage materials, Год журнала: 2023, Номер 57, С. 14 - 43

Опубликована: Фев. 4, 2023

Язык: Английский

Процитировано

95
Resolving complex intralayer transition motifs in high-Ni-content layered cathode materials for lithium-ion batteries DOI
Chunyang Wang, Xuelong Wang, Rui Zhang

и другие.

Nature Materials, Год журнала: 2023, Номер 22(2), С. 235 - 241

Опубликована: Янв. 26, 2023

Язык: Английский

Процитировано

92
Rapid determination of solid-state diffusion coefficients in Li-based batteries via intermittent current interruption method DOI Creative Commons
Yu‐Chuan Chien, Haidong Liu, Ashok S. Menon

и другие.

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Апрель 21, 2023

The galvanostatic intermittent titration technique (GITT) is considered the go-to method for determining Li+ diffusion coefficients in insertion electrode materials. However, GITT-based methods are either time-consuming, prone to analysis pitfalls or require sophisticated interpretation models. Here, we propose current interruption (ICI) as a reliable, accurate and faster alternative methods. Using Fick's laws, prove that ICI renders same information GITT within certain duration of time since interruption. Via experimental measurements, also demonstrate results from match where assumption semi-infinite applies. Moreover, benefit non-disruptive operando materials characterization exhibited by correlating continuously monitored coefficient LiNi0.8Mn0.1Co0.1O2-based its structural changes captured X-ray diffraction measurements.

Язык: Английский

Процитировано

84
Long‐Range Cationic Disordering Induces two Distinct Degradation Pathways in Co‐Free Ni‐Rich Layered Cathodes DOI Creative Commons
Weibo Hua, Jilu Zhang, Suning Wang

и другие.

Angewandte Chemie International Edition, Год журнала: 2022, Номер 62(12)

Опубликована: Дек. 22, 2022

Ni-rich layered oxides are one of the most attractive cathode materials in high-energy-density lithium-ion batteries, their degradation mechanisms still not completely elucidated. Herein, we report a strong dependence pathways on long-range cationic disordering Co-free Li1-m (Ni0.94 Al0.06 )1+m O2 (NA). Interestingly, disordered phase with lattice mismatch can be easily formed near-surface region NA particles very low cation disorder (NA-LCD, m≤0.06) over electrochemical cycling, while structure is basically maintained core forming "core-shell" structure. Such surface reconstruction triggers rapid capacity decay during first 100 cycles between 2.7 and 4.3 V at 1 C or 3 C. On contrary, local distortions gradually accumulated throughout whole higher degrees (NA-HCD, 0.06≤m≤0.15) that lead to slow upon cycling.

Язык: Английский

Процитировано

79