Fabrication of complex, 3D, branched hollow carbonaceous structures and their applications for supercapacitors.

Autor: Ji L; School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China., Zhu Y; School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China., Teng X; School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China., Wang T; School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China., Wang S; School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China. Electronic address: wangsheng@zstu.edu.cn., Meyer TJ; Department of Chemistry, University of North Carolina at Chapel Hill, Chapel, NC 27599, USA., Chen Z; School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China. Electronic address: zfchen@tongji.edu.cn.
Jazyk: angličtina
Zdroj: Science bulletin [Sci Bull (Beijing)] 2022 Feb 26; Vol. 67 (4), pp. 398-407. Date of Electronic Publication: 2021 Oct 19.
DOI: 10.1016/j.scib.2021.10.008
Abstrakt: A unique "integrated hard-templating strategy" is described for facile synthesis of a carbonaceous material with a novel three-dimensional (3D) branched hollow architecture. A set of steps, including template formation, surface coating and template removal, all occur in a spontaneous and orderly manner in the one-pot hydrothermal process. Investigations on structural evolution during the process reveal that pre-synthesized zeolitic imidazolate framework-8 (ZIF-8) nanoparticles are first dissociated and then self-assembled into 3D branched superstructures of ZnO as templates. Initial self-assembly is followed by coating of the glucose-derived carbonaceous materials and etching of interior ZnO by organic acids released in situ by hydrolysis of glucose. The 3D-branched hollow architecture is shown to greatly enhance supercapacitor performance. The research described here provides guidance into the development of strategies for complex hollow carbonaceous architectures for a variety of potential applications.
Competing Interests: Conflict of interest The authors declare that they have no conflict of interest.
(Copyright © 2021 Science China Press. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: