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Title: Formation of super-assembled TiOx/Zn/N-doped carbon inverse opal towards dendrite-free Zn anodes
Authors: Sun, Peng Xiao
Cao, Zhenjiang
Zeng, Yin Xiang
Xie, Wen Wen
Li, Nian Wu
Luan, Deyan
Yang, Shubin
Yu, Le
Lou, David Xiong Wen
Keywords: Engineering::Chemical engineering
Issue Date: 2022
Source: Sun, P. X., Cao, Z., Zeng, Y. X., Xie, W. W., Li, N. W., Luan, D., Yang, S., Yu, L. & Lou, D. X. W. (2022). Formation of super-assembled TiOx/Zn/N-doped carbon inverse opal towards dendrite-free Zn anodes. Angewandte Chemie International Edition, 61(7), e202115649-.
Journal: Angewandte Chemie International Edition
Abstract: Uncontrolled growth of Zn dendrites and side reactions are the major restrictions for the commercialization of Zn metal anodes. Herein, we develop a TiOx /Zn/N-doped carbon inverse opal (denoted as TZNC IO) host to regulate the Zn deposition. Amorphous TiOx and Zn/N-doped carbon can serve as the zincophilic nucleation sites to prevent the parasitic reactions. More importantly, the highly ordered IO host homogenizes the local current density and electric field to stabilize Zn deposition. Furthermore, the three-dimensional open networks could regulate Zn ion flux to enable stable cycling performance at large current densities. Owing to the abundant zincophilic sites and the open structure, granular Zn deposits could be realized. As expected, the TZNC IO host guarantees the steady Zn plating/stripping with a long-term stability over 450 h at the current density of 1 mA cm-2 . As a proof-of-concept demonstration, a TZNC@Zn||V2 O5 full cell shows long lifespan over 2000 cycles at 5.0 A g-1 .
ISSN: 1433-7851
DOI: 10.1002/anie.202115649
Rights: © 2021 Wiley-VCHGmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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