Construction of Bi/Bi 2 O 3 particles embedded in carbon sheets for boosting the storage capacity of potassium-ion batteries.

Autor: Tang Y; Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, PR China., Cheng L; Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, PR China., Zheng J; Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, PR China., Sun Y; School of Advanced Manufacturing, Guangdong University of Technology, Jieyang 515200, PR China; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, PR China. Electronic address: yjsun@gdut.edu.cn., Li H; Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, PR China. Electronic address: lihongyan@jnu.edu.cn.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2024 Nov 15; Vol. 674, pp. 634-642. Date of Electronic Publication: 2024 Jun 27.
DOI: 10.1016/j.jcis.2024.06.207
Abstrakt: Bismuth-based materials have attracted interest in potassium-ion batteries (PIBs). However, the large volume expansion prevents further use of bismuth-based materials for potassium storage. This work employs a two-step synthesis method to innovatively synthesize of Bi/Bi 2 O 3 nanoparticles assembled on N-doped porous carbon sheets (Bi/Bi 2 O 3 @CN). The layered structures with uniformly shaped and N-doped porous carbon skeleton buffer the expansion of Bi and the Bi/Bi 2 O 3 particles increase the capacity of potassium storage. In brief, the Bi/Bi 2 O 3 @CN served as anode in half-cell of PIBs have a good rate capacity of more than 234.7 mAh/g at 20 A/g. The specific capacity retention was 73 % compared with 322.16 mAh/g at 1 A/g, demonstrating good holding capacity for diverse current densities. The cycle also displays 163 mAh/g after 1500 cycles at 2 A/g in the KPF 6 metal salt solution, showing its potential as one of the anode materials in PIBs.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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