Engineering Electrode/Electrolyte Interphase Chemistry toward High-Rate and Long-Life Potassium Ion Full-Cell

Ying Mo; Wang Zhou; Kexuan Wang; Kuikui Xiao; Yuqing Chen; Zixing Wang; Pei Tang; Peitao Xiao; Yuxuan Gong; Shi Chen; Peng Gao; Jilei Liu

doi:10.1021/acsenergylett.2c02659

journal article·2023-02-10

Engineering Electrode/Electrolyte Interphase Chemistry toward High-Rate and Long-Life Potassium Ion Full-Cell

Ying Mo, Wang Zhou, Kexuan Wang, Kuikui Xiao, Yuqing Chen, Zixing Wang, Pei Tang, Peitao Xiao, Yuxuan Gong, Shi Chen, Peng Gao, Jilei Liu

ACS Energy Letters· Volume 8· Issue 2

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Source abstract

Abstract

Controlling the interfacial chemistries of the cathode and anode in potassium ion full-cells is critically important for better K + storage; however, the correlation between cathode electrolyte interphase (CEI) and solid electrolyte interphase (SEI) and its effect on electrochemical performance is poorly understood, not mention their rational matchup. In this study, an electrochemical modification strategy has been employed for the tailored design of both the CEI on a K 2 Fe[Fe(CN) 6 ] (KFeHCF) surface and the SEI on a graphite (Gr) surface. The optimized matchup between CEI and SEI realized a good rate and cycling performance in KFeHCF/Gr full-cells, which is attributed to the presence of a robust, homogeneous, and conductive SEI that contains chemically stable PEO (−(CH 2 CH 2 O) n −) and K 2 CO 3 . Our results not only promoted fundamental understanding of interfacial chemistry on K + storage, but also provided rational design strategy to realize enhanced efficiency and durability of potassium ion full-cells, which can also be extended to other energy storage systems.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

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

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

Affiliations

College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, Changsha410082, China

Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Macau999078, China

Key Laboratory of Carbon Materials of Zhejiang Province, Wenzhou University, Wenzhou325035, P. R. China

Department of Materials Science and Engineering, National University of Defense Technology, Changsha, Hunan410073, China

Jeld Wen Inc, 3737 Lakeport Blvd, Klamath Falls, Oregon97601, United States

Funding

Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of?Hunan Province · National Natural Science Foundation of China · Outstanding Youth Scientist Foundation of Hunan Province · Macau Science and Technology Development Fund · Major Science and Technology Program of Hunan Province

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