Enabling fast-charging selenium-based aqueous batteries via conversion reaction with copper ions

Chunlong Dai, Linyu Hu, Hao Chen, Xuting Jin, Yuyang Han, Ying Wang, Xiangyang Li, Xinqun Zhang, Li Song, Maowen Xu, Huhu Cheng, Yang Zhao, Zhipan Zhang (), Feng Liu () and Liangti Qu ()
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Chunlong Dai: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Linyu Hu: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Hao Chen: Key Laboratory of Luminescent and Real Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University
Xuting Jin: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Yuyang Han: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Ying Wang: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Xiangyang Li: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Xinqun Zhang: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Li Song: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Maowen Xu: Key Laboratory of Luminescent and Real Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University
Huhu Cheng: Tsinghua University
Yang Zhao: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Zhipan Zhang: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology
Feng Liu: State Key Laboratory of Nonlinear Mechanics Institute of Mechanics, Chinese Academy of Sciences
Liangti Qu: Key Laboratory of Cluster Science, Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Selenium (Se) is an appealing alternative cathode material for secondary battery systems that recently attracted research interests in the electrochemical energy storage field due to its high theoretical specific capacity and good electronic conductivity. However, despite the relevant capacity contents reported in the literature, Se-based cathodes generally show poor rate capability behavior. To circumvent this issue, we propose a series of selenium@carbon (Se@C) composite positive electrode active materials capable of delivering a four-electron redox reaction when placed in contact with an aqueous copper-ion electrolyte solution (i.e., 0.5 M CuSO4) and copper or zinc foils as negative electrodes. The lab-scale Zn | |Se@C cell delivers a discharge voltage of about 1.2 V at 0.5 A g−1 and an initial discharge capacity of 1263 mAh gSe−1. Interestingly, when a specific charging current of 6 A g−1 is applied, the Zn | |Se@C cell delivers a stable discharge capacity of around 900 mAh gSe−1 independently from the discharge rate. Via physicochemical characterizations and first-principle calculations, we demonstrate that battery performance is strongly associated with the reversible structural changes occurring at the Se-based cathode.

Date: 2022
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DOI: 10.1038/s41467-022-29537-5

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