journal article·2019-12

A Nacre‐Inspired Separator Coating for Impact‐Tolerant Lithium Batteries

Yong‐Hui Song, Kai‐Jin Wu, Tian‐Wen Zhang, Lei‐Lei Lu, Yong Guan, Fei Zhou, Xiu‐Xia Wang, Yi‐Chen Yin, Yi‐Hong Tan, Feng Li, Te Tian, Yong Ni, Hong‐Bin Yao, Shu‐Hong Yu

Advanced Materials· Volume 31· Issue 51
Publisher page

Abstract

Abstract The commercial ceramic nanoparticle coated microporous polyolefin separators used in lithium batteries are still vulnerable under external impact, which may cause short circuits and consequently severe safety threats, because the protective ceramic nanoparticle coating layers on the separators are intrinsically brittle. Here, a nacre‐inspired coating on the separator to improve the impact tolerance of lithium batteries is reported. Instead of a random structured ceramic nanoparticle layer, ion‐conductive porous multilayers consisting of highly oriented aragonite platelets are coated on the separator. The nacre‐inspired coating can sustain external impact by turning the violent localized stress into lower and more uniform stress due to the platelet sliding. A lithium‐metal pouch cell using the aragonite platelet coated separator exhibits good cycling stability under external shock, which is in sharp contrast to the fast short circuit of a lithium‐metal pouch cell using a commercial ceramic nanoparticle coated separator.
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Research context

OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Extraction and Separation Processes

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

Affiliations

Division of Nanomaterials and Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China

Department of Chemistry Department of Applied Chemistry University of Science and Technology of China Hefei Anhui 230026 China

CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics, CAS Center for Excellence in Complex System Mechanics University of Science and Technology of China Hefei Anhui 230027 China

National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230026 China

Center for Micro‐ and Nanoscale Research and Fabrication University of Science and Technology of China Hefei Anhui 230026 China

Collaborative Innovation Center of Suzhou Nano Science and Technology University of Science and Technology of China Hefei Anhui 230026 China

Funding

Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Foundation for Innovative Research Groups of the National Natural Science Foundation of China · National Synchrotron Radiation Laboratory · Chinese Academy of Sciences · Fundamental Research Funds for the Central Universities

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