Hexagon MXene based heterojunction interface with high ion adsorption and electron transfer efficiency for soft-package potassium-ions aqueous supercapacitors.

Autor: Chao S; School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China., Xue Y; School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China., Yu J; School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China., Liu J; School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China., Wu Q; School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China. Electronic address: wuqiong9918@126.com., Wu F; School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China., Yu C; School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China., Javed MS; School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China., Zhang W; Key Laboratory of Automobile Materials MOE, School of Materials Science & Engineering, Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Electron Microscopy Center, and International Center of Future Science, Jilin University, Changchun 130012, China. Electronic address: weizhang@jlu.edu.cn.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2024 Nov; Vol. 673, pp. 922-933. Date of Electronic Publication: 2024 Jun 15.
DOI: 10.1016/j.jcis.2024.06.115
Abstrakt: Potassium-ion hybrid capacitors (PIHC) are considered as ideal large-scale rechargeable energy storage devices due to their low-cost, high-power density and environmental protection. However, a low energy density is the main factor restricting the practical application of PIHC. The interface is formed on the surface of electrode material of PIHC through strong correlation to construct heterojunction, which can significantly improve the performance of ion energy storage. However, how to reveal the influence of the interfacial state of the heterojunction on the adsorption and electron transmission of energy storage ions at the atomic level is still one of the key scientific problems in this field. In this work, metal ion intercalation and microwave-assisted in-situ etching are used to construct the Hexagon MXene Ti 3 C 2 heterojunction with TiOHO strong correlation. At the interface of heterojunction, TiOHO highway for electron transmission is developed to improve the rate performance of PIHC. Through experimental and theoretical calculation, the optimum adsorption position and maximum adsorption amount of potassium-ion at the single interface of heterojunction are obtained, and the specific energy density of PIHC is increased. This lays a foundation for the practical application of high-performance soft-package PIHC.
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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