DataVXACS Applied Energy MaterialsPaper
journal article·2018-12-24

Corrosion Suppression of Aluminum Metal by Optimizing Lithium Salt Concentration in Solid-State Imide Salt-Based Polymer Plastic Crystal Electrolyte Membrane

Yumei Zhou, Jianchen Hu, Peixin He, Yuhong Zhang, Jingjing Xu, Xiaodong Wu

ACS Applied Energy Materials· Volume 1· Issue 12
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Source abstract

Abstract

Imide salt–polymer plastic crystal electrolytes (PPCEs) have been demonstrated to be very promising solid-state electrolytes for ambient lithium ion batteries (LIBs). However, anodic Al dissolution at high voltage, due to these salts, cannot form an AlF3/LiF passivation film (like LiPF6) on an Al surface, which limits their application in high-voltage solid-state LIBs. In this work two ambient workable PPCEs with different lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) concentrations are designed to investigate anodic Al dissolution suppression in solid-state imide salt-based electrolytes. The anodic Al dissolution is examined by a scanning electron microscope (SEM) and an energy dispersive spectrometer (EDS). The electrochemical performance is evaluated by solid-state LiCoO2/PPCE/Li4Ti5O12 cells. The results demonstrate that anodic Al dissolution is efficiently suppressed and the cell electrochemical performance is greatly elevated by optimizing LiTFSI concentration in PPCEs. The suppression mechanism of Al corrosion in concentrated PPCE is analyzed and suggested.
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Research context

Energy storageMetals & alloysPolymers

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

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, P. R. China

i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, 398 Ruo-shui Road, Suzhou Industrial Park, Suzhou 215123, P. R. China

National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Research Center of Cooperative Innovation for Functional Organic/Polymer Material Micro/Nanofabrication, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou 215123, P. R. China

Funding

National Natural Science Foundation of China · Hubei Provincial Department of Education

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