TY - JOUR
T1 - Formation of Super-Assembled TiOx/Zn/N-Doped Carbon Inverse Opal Towards Dendrite-Free Zn Anodes
AU - Sun, Peng Xiao
AU - Cao, Zhenjiang
AU - Zeng, Yin Xiang
AU - Xie, Wen Wen
AU - Li, Nian Wu
AU - Luan, Deyan
AU - Yang, Shubin
AU - Yu, Le
AU - Lou, Xiong Wen (David)
PY - 2022/2/7
Y1 - 2022/2/7
N2 - 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||V2O5 full cell shows long lifespan over 2000 cycles at 5.0 A g−1. © 2021 Wiley-VCH GmbH
AB - 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||V2O5 full cell shows long lifespan over 2000 cycles at 5.0 A g−1. © 2021 Wiley-VCH GmbH
KW - Inverseopal
KW - Spaceregulation
KW - Zincophilic nucleation sites
KW - Zn metalanode
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U2 - 10.1002/anie.202115649
DO - 10.1002/anie.202115649
M3 - RGC 21 - Publication in refereed journal
C2 - 34913229
SN - 1433-7851
VL - 61
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 7
M1 - e202115649
ER -