التفاصيل البيبلوغرافية
| العنوان: |
Controllable synthesis of an atomic Sn-anchoring carbon host for excellent long-cycle-life zinc metal batteries. |
| المؤلفون: |
Lantao Liu, Yiming Li, Hu Zhang, Fang Dong, Shuaize Wang, Ziyu Sun, Gaixia Zhang, Xiaohong Chen, Omanovic, Sasha, Shuhui Sun, Huaihe Song |
| المصدر: |
Journal of Materials Chemistry A; 5/7/2024, Vol. 12 Issue 17, p10422-10428, 6p |
| مستخلص: |
Aqueous zinc (Zn) metal batteries are considered to be promising next-generation safe energy storage devices, but the severe hydrogen evolution reaction (HER) and uncontrollable dendrite growth hinder their commercial deployment. In this work, atomic Sn-anchoring carbon spheres with multiple cavities (Sn@HMCS) are developed as an electrode material, to guide/control Zn metal deposition and inhibit the HER and dendrite formation. XANES analysis, DFT simulations and in situ/ex situ characterization of the material reveal that single-atom Sn can enhance the zincophilicity of host materials, lower the nucleation barrier for Zn2+ adsorption, redistribute the charge density of the interface between Zn and the carbon matrix, and accelerate the deposition kinetics of Zn2+, thereby suppressing the formation of dendrites and hydrogen gas during the plating/stripping process. As a result, in Zn-Zn symmetric cells, Sn@HMCS can cycle stably for more than 2300 h at 1 mA cm-2 for 1 mA h cm-2 with an ultralow voltage hysteresis of z134 mV. In aqueous full cells, Sn@HMCS endows the devices with high energy density (up to 190 W h kg-1) and stable cycling performance over 900 cycles with a capacity retention of 89% at 1 A g-1. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
