TY - JOUR
T1 - High-kinetic and stable antimony anode enabled by tuning coordination environment for ultrafast aqueous energy storage
AU - Liu, Qiyu
AU - Zhang, Haozhe
AU - Xie, Jinhao
AU - Yang, Fan
AU - Yang, Zujin
AU - Liu, Xiaoqing
AU - Wu, Haibo
AU - Liu, Qi
AU - Lu, Xihong
PY - 2023/8
Y1 - 2023/8
N2 - Antimony (Sb) with stripping/plating behavior is attractive as anode material for aqueous energy storage. However, it suffers from unfavorable ion diffusion and de-solvation issues due to special coordination environment of Sb(III), resulting in poor rate capability. Herein, we regulate the coordination environment by introducing high-affinity Cl− ligands to achieve high-kinetic and reversible Sb stripping/plating. It enables faster diffusion kinetics and lower de-solvation energy barrier to promote the manageable nucleation and deposition of Sb even at ultrahigh current densities on various of collectors (carbon felt, Ti foil and F-doped tin oxide, etc). Notably, the Sb anode on carbon felt substrate delivers coulombic efficiency of 97.0%, high-rate capability (98.4% capacity retention from 20 to 500 mA cm−2 or 250 C) and satisfactory stability. The as-assembled CoxNiy(OH)z//Sb battery also provides outstanding rate capability and durability. This work provides new inspiration for developing ultrafast Sb-based aqueous energy storage. © 2023 Elsevier Ltd
AB - Antimony (Sb) with stripping/plating behavior is attractive as anode material for aqueous energy storage. However, it suffers from unfavorable ion diffusion and de-solvation issues due to special coordination environment of Sb(III), resulting in poor rate capability. Herein, we regulate the coordination environment by introducing high-affinity Cl− ligands to achieve high-kinetic and reversible Sb stripping/plating. It enables faster diffusion kinetics and lower de-solvation energy barrier to promote the manageable nucleation and deposition of Sb even at ultrahigh current densities on various of collectors (carbon felt, Ti foil and F-doped tin oxide, etc). Notably, the Sb anode on carbon felt substrate delivers coulombic efficiency of 97.0%, high-rate capability (98.4% capacity retention from 20 to 500 mA cm−2 or 250 C) and satisfactory stability. The as-assembled CoxNiy(OH)z//Sb battery also provides outstanding rate capability and durability. This work provides new inspiration for developing ultrafast Sb-based aqueous energy storage. © 2023 Elsevier Ltd
KW - Anode
KW - Antimony
KW - Aqueous energy storage
KW - Coordination environment
KW - High rate capability
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U2 - 10.1016/j.nanoen.2023.108567
DO - 10.1016/j.nanoen.2023.108567
M3 - RGC 21 - Publication in refereed journal
SN - 2211-2855
VL - 113
JO - Nano Energy
JF - Nano Energy
M1 - 108567
ER -