DataVXChemistry of MaterialsPaper
journal article·2020-04-28

Nonflammable Nitrile Deep Eutectic Electrolyte Enables High-Voltage Lithium Metal Batteries

Zhenglin Hu, Fang Xian, Ziyang Guo, Chenglong Lu, Xiaofan Du, Xiangyang Cheng, Shu Zhang, Shanmu Dong, Guanglei Cui, Liquan Chen

Chemistry of Materials· Volume 32· Issue 8
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Source abstract

Abstract

Nonflammable functional electrolytes with remarkably interfacial compatibility toward both lithium anodes and high-voltage cathodes are considered as the ultimate pursuit for rechargeable lithium metal battery. For this target, we report a dual-anion deep eutectic solution (D-DES) based on elaborately selected combination of nitrile and functional lithium salts. The interactions of succinonitrile with cation/anion are highlighted by in situ/ex situ measurements, which endow D-DES with excellent ionic conductivity and significantly enhanced interface stability. By using this D-DES, constant Li|Li cycling over 1 year (>10,000 h) under a Li capacity of 5 mA h cm–2 can be achieved. The capacity retention is still over 70% with a high charging voltage of 4.7 V for 500 cycles in LiCoO2|Li battery. Pouch cells with high areal capacity close to practical application also deliver superior safe performance. This study paves a new pathway for designing high-safety electrolyte and boosts the practical application of high-voltage lithium metal battery.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Qingdao Industrial Energy Storage Research Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China

Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Qingdao University, Qingdao 266071, P. R. China

College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · Shandong Province · Youth Innovation Promotion Association of the Chinese Academy of Sciences · National Natural Science Foundation of China · Key Scientific and Technological Innovation Project of Shandong

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