journal article·2019-03

A Desolvated Solid–Solid Interface for a High‐Capacitance Electric Double Layer

Yu‐Zuo Wang, Xu‐Yi Shan, Li‐Po Ma, Jia‐Wei Wang, Da‐Wei Wang, Zhang‐Quan Peng, Hui‐Ming Cheng, Feng Li

Advanced Energy Materials· Volume 9· Issue 12
Publisher page

Abstract

Abstract Understanding the electric double layer is essential for achieving efficient electrochemical energy storage technologies. A conventional solid–liquid electrode interface suffers from serious self‐discharge and a narrow voltage window, which makes the development of a solid–solid interface imperative. However, an in‐depth understanding of the electric double layer with a solid–solid interface is lacking. Here, a solid–solid interfacial electric double layer is proposed with excellent electrochemical performance. The solid layer is constructed by the electrochemical decomposition of lithium difluoro(oxalate)borate, which provides a desolvated environment for the establishment of a electric double layer. This makes a stronger interaction between the electrode surface and the ions. Based on this unique property, it is found that the solid–solid interfacial electric double layer has an increased capacitance, which suggests a way to develop high‐energy electrochemical capacitors.
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Research context

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

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

Affiliations

Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

Key Laboratory for Anisotropy and Texture of Materials Northeastern University Shenyang 110819 China

State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

School of Chemical Engineering The University of New South Wales Sydney NSW 2052 Australia

Tsinghua‐Berkeley Shenzhen Institute Tsinghua University Shenzhen 518055 China

Center of Excellence in Environmental Studies King Abdulaziz University Jeddah 21589 Saudi Arabia

School of Materials Science and Engineering University of Science and Technology of China Hefei 230026 China

Funding

National Natural Science Foundation of China · Ministry of Science and Technology of the People's Republic of China · Chinese Academy of Sciences

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