DataVXACS Applied Materials & InterfacesPaper
journal article·2017-06-28

Stabilization of Garnet/Liquid Electrolyte Interface Using Superbase Additives for Hybrid Li Batteries

Biyi Xu, Huanan Duan, Hezhou Liu, Chang−An Wang, Shengwen Zhong

ACS Applied Materials & Interfaces· Volume 9· Issue 25
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Source abstract

Abstract

To improve the solid-electrolyte/electrode interface compatibility, we have proposed the concept of hybrid electrolyte by including a small amount of liquid electrolyte in between. In this work, n -BuLi, a superbase, has been found to significantly improve the cycling performance of LiFePO 4 /Li hybrid cells containing Li 7 La 3 Zr 1.5 Ta 0.5 O 12 (LLZT) and conventional carbonate-based liquid electrolyte. The modified cells have been cycled for 400 cycles at 100 and 200 μA cm –2 at room temperature, indicating excellent solid/liquid electrolyte interface stability. The role of n -BuLi may be 3-fold: to retard the decomposition reaction of LE, to suppress the Li + /H + exchange, and to lithiate the garnet/LE interface, inhibiting side reactions and enhancing interfacial lithium-ion transport.
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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 Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China

State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R. China

School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P.R. China

Funding

Shanghai Jiao Tong University · Shanghai Academy of Spaceflight Technology · National Natural Science Foundation of China

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