Enabling High-Voltage Lithium-Metal Batteries under Practical Conditions

被引：830

作者：

Ren, Xiaodi ^{[1
]}

Zou, Lianfeng ^{[2
]}

Cao, Xia ^{[1
]}

Engelhard, Mark H. ^{[2
]}

Liu, Wen ^{[2
]}

Burton, Sarah D. ^{[2
]}

Lee, Hongkyung ^{[1
]}

Niu, Chaojiang ^{[1
]}

Matthews, Bethany E. ^{[1
]}

Zhu, Zihua ^{[2
]}

Wang, Chongmin ^{[2
]}

Arey, Bruce W. ^{[1
]}

Xiao, Jie ^{[1
]}

Liu, Jun ^{[1
]}

Zhang, Ji-Guang ^{[1
]}

Xu, Wu ^{[1
]}

机构：

[1] Pacific Northwest Natl Lab, Energy & Environm, Richland, WA 99354 USA

[2] Pacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA

来源：

JOULE | 2019年 / 3卷 / 07期

关键词：

HIGH-ENERGY; ETHER ELECTROLYTES; CATHODE MATERIALS; CARBONATE; SURFACE; EFFICIENCY; SOLVATION; STABILITY; BEHAVIOR; ANODES;

D O I：

10.1016/j.joule.2019.05.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Rechargeable lithium (Li)-metal batteries (LMBs) offer a great opportunity for applications needing high-energy-density battery systems. However, rare progress has been demonstrated so far under practical conditions, including high voltage, high-loading cathode, thin Li anode, and lean electrolyte. Here, in opposition to common wisdom, we report an ether-based localized high-concentration electrolyte that can greatly enhance the stability of a Ni-rich LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode under 4.4 and 4.5 V with an effective protection interphase enriched in LiF. This effect, in combination with the superior Li stability in this electrolyte, enables dramatically improved cycling performances of Li parallel to NMC811 batteries under highly challenging conditions. The LMBs can retain over 80% capacity in 150 stable cycles with extremely limited amounts of the Li anode and electrolyte. The findings in this work point out a very promising strategy to develop practical high-energy LMBs.

引用

页码：1662 / 1676

页数：15

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