High Voltage Operation of Ni-Rich NMC Cathodes Enabled by Stable Electrode/Electrolyte Interphases

Zhao Wengao; Zheng Jianming; Zou Lianfeng; Jia Haiping; Liu Bin; Wang Hui; Engelhard Mark H.; Wang Chongmin; Xu Wu; Yang Yong; Zhang Ji-Guang

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High Voltage Operation of Ni-Rich NMC Cathodes Enabled by Stable Electrode/Electrolyte Interphases

机译：稳定的电极/电解质相实现富镍NMC阴极的高压操作

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摘要

The lithium (Li) metal battery (LMB) is one of the most promising candidates for next-generation energy storage systems. However, it is still a significant challenge to operate LMBs with high voltage cathodes under high rate conditions. In this work, an LMB using a nickel-rich layered cathode of LiNi0.76Mn0.14Co0.10O2 (NMC76) and an optimized electrolyte [0.6 m lithium bis(trifluoromethanesulfonyl)imide + 0.4 m lithium bis(oxalato)borate + 0.05 m LiPF6 dissolved in ethylene carbonate and ethyl methyl carbonate (4:6 by weight)] demonstrates excellent stability at a high charge cutoff voltage of 4.5 V. Remarkably, these Li||NMC76 cells can deliver a high discharge capacity of 220 mA h g(-1) (846 W h kg(-1)) and retain more than 80% capacity after 1000 cycles at high charge/discharge current rates of 2C/2C (1C = 200 mA g(-1)). This excellent electrochemical performance can be attributed to the greatly enhanced structural/interfacial stability of both the Ni-rich NMC76 cathode material and the Li metal anode using the optimized electrolyte.

机译：锂（Li）金属电池（LMB）是下一代储能系统最有希望的候选者之一。然而，在高速率条件下使用高压阴极运行LMB仍然是一个重大挑战。在这项工作中，一个使用LiNi0.76Mn0.14Co0.10O2（NMC76）的富镍层状阴极和优化电解质的LMB [0.6 m双（三氟甲磺酰基）酰亚胺锂+ 0.4 m双（草酸硼酸）锂+ 0.05 m LiPF6溶于碳酸亚乙酯和碳酸甲乙酯（按重量计4：6）]在4.5 V的高充电截止电压下表现出出色的稳定性。值得注意的是，这些Li || NMC76电池可提供> 220 mA hg（- 1）（846 W h kg（-1）），并在2C / 2C（1C = 200 mA g（-1））的高充电/放电电流速率下，经过1000次循环后仍保持80％以上的容量。这种优异的电化学性能可以归因于使用优化电解质的富镍NMC76阴极材料和锂金属阳极的结构/界面稳定性大大提高。

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来源
《Advanced energy materials》 |2018年第19期|1800297.1-1800297.9|共9页
作者
Zhao Wengao; Zheng Jianming; Zou Lianfeng; Jia Haiping; Liu Bin; Wang Hui; Engelhard Mark H.; Wang Chongmin; Xu Wu; Yang Yong; Zhang Ji-Guang;
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作者单位

Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Environm Mol Sci Lab, 3335 Innovat Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Environm Mol Sci Lab, 3335 Innovat Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Environm Mol Sci Lab, 3335 Innovat Blvd, Richland, WA 99354 USA;

Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA;

Xiamen Univ, Sch Energy Res, Xiamen 361005, Fujian, Peoples R China;

Pacific Northwest Natl Lab, Energy & Environm Directorate, 902 Battelle Blvd, Richland, WA 99354 USA;

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正文语种 eng
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关键词
cathodes; dual electrolyte; high voltage; interphases; Ni-rich NMC;

机译：阴极;双电解液;高压;相间;富镍NMC;

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1. Enabling stable and high-rate cycling of a Ni-rich layered oxide cathode for lithium-ion batteries by modification with an artificial Li+-conducting cathode-electrolyte interphase [J] . Wang Shixuan, Dai Alvin, Cao Yuliang, Journal of Materials Chemistry, A. Materials for energy and sustainability . 2021,第19期

机译：通过用人工Li + - 导电阴极 - 电解质间相互作用，通过改性实现用于锂离子电池的Ni的层状氧化物阴极的稳定和高速循环。
2. Stabilized Electrode/Electrolyte Interphase by a Saturated Ionic Liquid Electrolyte for High-Voltage NMC532/Si-Graphite Cells [J] . Liu Qian, Jiang Wei, Munoz Maria Jose Piernas, ACS applied materials & interfaces . 2020,第20期

机译：稳定电极/电解质通过饱和离子液体电解质与高压NMC532 / Si-石墨细胞相互作用
3. Low Resistance and High Stable Solid-Liquid Electrolyte Interphases Enable High-Voltage Solid-State Lithium Metal Batteries [J] . Li Xin, Cong Lina, Ma Shunchao, Advanced Functional Materials . 2021,第20期

机译：低电阻和高稳定的固液电解质互连使高压固态锂金属电池
4. Enhanced Electrode/Electrolyte Interphases in Fluorinated Orthoformate Electrolytes for Stable High-Voltage Lithium Metal Batteries [C] . Xia Cao, Wu Xu, Ji-Guang Zhang Pacific Rim Meeting on Electrochemical and Solid-State Science . 2020

机译：增强电极/电解质在氟化正交电解质中的差异用于稳定的高压锂金属电池
5. The structural and electrochemical dynamics of the electrode-electrolyte interphase of metal fluoride nanocomposite positive electrodes for lithium batteries. [D] . Gmitter, Andrew John. 2012

机译：锂电池用金属氟化物纳米复合正电极的电极-电解质中间相的结构和电化学动力学。
6. Modification of Ni-Rich FCG NMC and NCA Cathodes by Atomic Layer Deposition: Preventing Surface Phase Transitions for High-Voltage Lithium-Ion Batteries [O] . Debasish Mohanty, Kevin Dahlberg, David M. King, -1

机译：通过原子层沉积修饰富镍FCG NMC和NCA阴极：防止高压锂离子电池的表面相变
7. High Voltage Operation of Ni‐Rich NMC Cathodes Enabled by Stable Electrode/Electrolyte Interphases [O] . Wengao Zhao, Jianming Zheng, Lianfeng Zou, 2018

机译：通过稳定电极/电解质界面实现的Ni-Rich NMC阴极的高压操作

High Voltage Operation of Ni-Rich NMC Cathodes Enabled by Stable Electrode/Electrolyte Interphases

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