DataVXAdvanced MaterialsPaper
journal article·2022-09

Enabling High‐Voltage “Superconcentrated Ionogel‐in‐Ceramic” Hybrid Electrolyte with Ultrahigh Ionic Conductivity and Single Li+‐Ion Transference Number

Yanfang Zhai, Wangshu Hou, Mingming Tao, Zhongting Wang, Zongyuan Chen, Zhong Zeng, Xiao Liang, Peerasak Paoprasert, Yong Yang, Ning Hu, Shufeng Song

Advanced Materials· Volume 34· Issue 39
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Source abstract

Abstract

Abstract High room‐temperature ionic conductivities, large Li+‐ion transference numbers, and good compatibility with both Li‐metal anodes and high‐voltage cathodes of the solid electrolytes are the essential requirements for practical solid‐state lithium‐metal batteries. Herein, a unique “superconcentrated ionogel‐in‐ceramic” (SIC) electrolyte prepared by an in situ thermally initiated radical polymerization is reported. Solid‐state static 7Li NMR and molecular dynamics simulation reveal the roles of ceramic in Li+ local environments and transport in the SIC electrolyte. The SIC electrolyte not only exhibits an ultrahigh ionic conductivity of 1.33 × 10−3 S cm−1 at 25 °C, but also a Li+‐ion transference number as high as 0.89, together with a low electronic conductivity of 3.14 × 10−10 S cm−1 and a wide electrochemical stability window of 5.5 V versus Li/Li+. Applications of the SIC electrolyte in Li||LiNi0.5Co0.2Mn0.3O2 and Li||LiFePO4 batteries further demonstrate the high rate and long cycle life. This study, therefore, provides a promising hybrid electrolyte for safe and high‐energy lithium‐metal batteries.
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Research context

Energy storagePolymersCeramics & glasses

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Thermal Expansion and Ionic Conductivity

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

Affiliations

College of Aerospace Engineering Chongqing University Chongqing 400044 P. R. China

State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 P. R. China

College of Materials Science and Engineering Chongqing University Chongqing 400044 P. R. China

College of Chemistry and Chemical Engineering Hunan University Changsha Hunan 410082 P. R. China

Department of Chemistry Faculty of Science and Technology Thammasat University Pathumthani 12120 Thailand

State Key Laboratory of Reliability and Intelligence Electrical Equipment National Engineering Research Center for Technological Innovation Method and Tool School of Mechanical Engineering Hebei University of Technology Tianjin 300401 P. R. China

Funding

Fundamental Research Funds for the Central Universities

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