DataVXACS Applied Energy MaterialsPaper
journal article·2020-07-27

In Situ and Operando Morphology Study of Germanium–Selenium Alloy Anode for Lithium-Ion Batteries

Xinwei Zhou, Tianyi Li, Yi Cui, Melissa L. Meyerson, Jason A. Weeks, C. Buddie Mullins, Yang Jin, Yuzi Liu, Likun Zhu

ACS Applied Energy Materials· Volume 3· Issue 7
Publisher page
Source abstract

Abstract

Selenium-doped germanium (GeSe) micrometer-sized particles have been reported with good cycling performance and rate capability due to a Li–Se–Ge network formed during the first lithiation that provides a Li-ion fast pathway. To understand the effect of the Li–Se–Ge network at a high cycling rate, we monitored the morphology change of both pure Ge and GeSe particles during cycling with an in situ/operando focused-ion beam-scanning electron microscope method. Our results showed that the proposed inactive Li–Se–Ge network can provide fast Li-ion transport and also buffer volume variation, resulting in homogeneous volume change and uniform microstructural evolution.
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Research context

Energy storageMetals & alloys

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

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

Affiliations

Department of Mechanical and Energy Engineering, Indiana University Purdue University Indianapolis, Indianapolis, Indiana 46202, United States

Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States

Departments of Chemical Engineering and Chemistry, University of Texas at Austin, Austin, Texas 78712, United States

Department of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China

Funding

Welch Foundation · Basic Energy Sciences · National Science Foundation

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