DataVXAdvanced Functional MaterialsPaper
journal article·2025-01

High Ion‐Conductive Interphase Enabled by Nitrate‐Ionic Liquid Additive for Low‐Temperature Lithium Metal Batteries

Zhigang He, Haifeng Tu, Guochao Sun, Ao Sun, Yuchen Wang, Jiapeng Sun, Guosong Wu, Wanfei Li, Jingjing Xu, Meinan Liu

Advanced Functional Materials· Volume 35· Issue 5
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Source abstract

Abstract

Abstract The development of high‐performance low‐temperature lithium metal batteries (LMBs) is hindered by severe lithium dendrite growth and sluggish charge transfer, both of which can be effectively addressed by constructing a robust solid electrolyte interphase (SEI) with improved Li+ transport kinetics. Compared to the soft organic SEI layers, LiF‐rich SEI shows sufficient mechanical strength to impede lithium dendrite growth, however, its extremely low ionic conductivity (≈10−13 S cm−1) hinders Li+ transport kinetics at low temperatures. Herein, a quasi‐ionic liquid (QIL, [Li(15‐crown‐5)]NO3) additive with rich NO3− is developed by introducing 15‐crown‐5 into LiNO3, which induces the in situ formation of SEI with abundant Li3N. Impressively, this Li3N SEI exhibits superior lithium affinity and lower ionic diffusion barriers as learned from empirical and computational studies, suggesting that it may be powerful to conquer the sluggish Li+ kinetics at low temperature. With the assistance of QIL additive, Li/LiCoO2 cells with a high mass loading of 11.5 mg cm−2 demonstrate stable cycling for 250 cycles without any capacity decay at ‐20 °C. This work opens an emerging avenue to construct high‐performance low‐temperature LMBs by manipulating SEI composition.
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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

State Key Laboratory of Featured Metal Materials and Life‐cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Non‐Ferrous Metals and Featured Materials School of Resources Environment and Materials Guangxi University Nanning 530004 China

Suzhou Institute of Nano‐Tech and Nano‐Bionics Chinese Academy of Sciences Suzhou Jiangsu 215123 China

State Key College of Materials Science and Engineering Hohai University Changzhou 213000 China

Suzhou Key Laboratory for Nanophotonic and Nanoelectronic Materials and Its Devices School of Materials and Engineering Suzhou University of Science and Technology Suzhou Jiangsu 215009 China

Guangdong Institute of Semiconductor Micro‐nano manufacturing technology Foshan 528225 China

Division of Nanomaterials and Jiangxi Key Lab of Carbonene Materials Jiangxi Institute of Nanotechnology Nanchang 330200 China

Funding

National Natural Science Foundation of China · Basic and Applied Basic Research Foundation of Guangdong Province · Double Thousand Plan of Jiangxi Province

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