journal article·2020-06-22Open access

Interfacial Engineering with Liquid Metal for Si-Based Hybrid Electrodes in Lithium-Ion Batteries

Sashini N. S. Hapuarachchi, Kimal C. Wasalathilake, Dumindu P. Siriwardena, Jawahar Y. Nerkar, Hao Chen, Shanqing Zhang, Yang Liu, Jun-chao Zheng, Dmitri V. Golberg, Anthony P. O’Mullane, Cheng Yan

ACS Applied Energy Materials· Volume 3· Issue 6

Abstract

Silicon (Si) anodes suffer from severe structural instability caused by volume expansion during lithium insertion and extraction. The extensive stress generated causes delamination at the anode/current collector interface and early capacity decay. We developed a novel anode structure by introducing a liquid metal layer in between Si and the Cu current collector. Both experiments and the density functional theory (DFT) simulation indicate an increased flexibility in the hybrid structure. No visible cracking or interface delamination was observed, attributed to the self-healing effect from the liquid metal. This work introduces a novel design for hybrid anodes with balanced mechanical strength and electrochemical performance.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advancements in Battery Materials · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies

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

Affiliations

School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), Brisbane, Queensland 4001, Australia

School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, Queensland 4001, Australia

Institute for Future Environments, Queensland University of Technology (QUT), Brisbane, Queensland 4001, Australia

Centre for Clean Environment and Energy, Environmental Futures Research Institute and Griffith School of Environment, Gold Coast Campus, Griffith University, Southport, Queensland 4222, Australia

School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China

Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland 4001, Australia

Funding

Australian Research Council · Queensland University of Technology

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