Electrolyte Boosting Microdumbbell-Structured Alloy/Metal Oxide Anode for Fast-Charging Sodium-Ion Batteries
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Type
ArticleAuthors
Li, QianCao, Zhen
Cheng, Haoran
Zhang, Junli

Ma, Zheng
Wahyudi, Wandi

Cavallo, Luigi

Sun, Qujiang
Ming, Jun

KAUST Department
KAUST Catalysis Center (KCC)Physical Science and Engineering (PSE) Division
Material Science and Engineering Program
Chemical Science Program
Date
2022-11-07Embargo End Date
2023-11-07Permanent link to this record
http://hdl.handle.net/10754/685647
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Development of sodium-ion batteries (SIBs) with greater energy density is of particular interest, but the anode choice is very limited, because of the failure of graphite in storing sodium. Although the alloying-type anodes demonstrate much higher capacity than the carbon anodes, the severe capacity fading hinders their applications. Herein, we present a novel alloying/conversion-based anode, where a conversion-type metal oxide (e.g., MnO) microdumbbell framework modified by a carbon layer was designed to stabilize the high-capacity alloying (e.g., Sn) nanoparticles. Combined with an electrolyte engineering approach, the as-designed Sn-MnO@C anode demonstrates a superior performance to store sodium, including a high capacity of 370 mAh g–1, extraordinary rate capacities over 10 A g–1, and a long lifespan of over 500 cycles. The high performance of the Sn-MnO@C anode in the SIB was further confirmed when the sodium vanadium phosphate-based cathode was paired. We demonstrate the importance of the synergistic effect of electrode structural design and electrolyte engineering (i.e., tuning Na+-solvent-anion complex) for attaining greater performance. This study opens a new avenue to preparing novel framework-supported functional materials and also offers a new opportunity to examine the electrolyte performance, facilitating the design of SIBs with greater power energy densities.Citation
Li, Q., Cao, Z., Cheng, H., Zhang, J., Ma, Z., Wahyudi, W., Cavallo, L., Sun, Q., & Ming, J. (2022). Electrolyte Boosting Microdumbbell-Structured Alloy/Metal Oxide Anode for Fast-Charging Sodium-Ion Batteries. ACS Materials Letters, 2469–2479. https://doi.org/10.1021/acsmaterialslett.2c00841Sponsors
The authors greatly thank the National Natural Science Foundation of China (No. 22122904) for funding support. This work is also supported by the National Natural Science Foundation of China (Nos. 21978281, 22109155, 11974150, U21A20330) and the Fundamental Research Funds for the Central Universities (No. lzujbky-2021-pd10). The authors also thank the Bureau of International Cooperation, Chinese Academy of Sciences (CAS-NST Joint Research Project No. 121522KYSB20200047), and the Scientific and Technological Developing Project of Jilin Province (No. YDZJ202101ZYTS022). The computational work was done on the KAUST supercomputer.Publisher
American Chemical Society (ACS)Journal
ACS Materials LettersAdditional Links
https://pubs.acs.org/doi/10.1021/acsmaterialslett.2c00841ae974a485f413a2113503eed53cd6c53
10.1021/acsmaterialslett.2c00841