DataVXACS Applied Materials & InterfacesPaper
journal article·2020-08-19

In Situ Observation of Interface Evolution on a Graphite Anode by Scanning Electrochemical Microscopy

Xiaojie Zeng, Dongqing Liu, Shuwei Wang, Shuai Liu, Xingke Cai, Lihan Zhang, Rui Zhao, Baohua Li, Feiyu Kang

ACS Applied Materials & Interfaces· Volume 12· Issue 33
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Source abstract

Abstract

A well-formed solid electrolyte interface (SEI) is critical for achieving long-term cycling stability in lithium-ion batteries (LIBs). However, the SEI remains the poorly understood component in LIBs especially under dynamic conditions. Here, scanning electrochemical microscopy (SECM) was applied to study the spontaneous reaction on a graphite electrode, SEI formation in the first cycle, SEI evolution during 10 cycles, and the stability of the as-formed SEI in the electrolyte. The conversion, dissolution, stabilization, and growth behaviors of the SEI were determined. Moreover, the SECM results were analyzed in combination with ex situ material characterization to understand the SEI on the graphite electrode comprehensively.
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Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Technologies Research · Advanced battery technologies research

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

Affiliations

Shenzhen Key Laboratory of Power Battery Safety and Shenzhen Geim Graphene Center, Tsinghua Shenzhen International Graduate School, Shenzhen 518055, China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China

Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China

Funding

National Natural Science Foundation of China · Special Fund Project for Strategic Emerging Industry Development of Shenzhen · Guangdong Province · Shenzhen Technical Plan Project · Shenzhen Key Laboratory on Power Battery Safety Research, Tsinghua University · Dongguan Core Technology Key Funding Project

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