Details

Autor(en) / Beteiligte

• Li, Hongpeng
• Guo, Can
• Zhang, Tengsheng
• Xue, Pan
• Zhao, Ruizheng
• Zhou, Wanhai
• Li, Wei
• Elzatahry, Ahmed
• Zhao, Dongyuan
• Chao, Dongliang

Titel

Hierarchical Confinement Effect with Zincophilic and Spatial Traps Stabilized Zn-Based Aqueous Battery

Ist Teil von

• Nano letters, 2022-05, Vol.22 (10), p.4223-4231

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Zn-based aqueous batteries (ZABs) have been regarded as promising candidates for safe and large-scale energy storage in the “post-Li” era. However, kinetics and stability problems of Zn capture cannot be concomitantly regulated, especially at high rates and loadings. Herein, a hierarchical confinement strategy is proposed to design zincophilic and spatial traps through a host of porous Co-embedded carbon cages (denoted as CoCC). The zincophilic Co sites act as preferred nucleation sites with low nucleation barriers (within 0.5 mA h cm–2), and the carbon cage can further spatially confine Zn deposition (within 5.0 mA h cm–2). Theoretical simulations and in situ/ex situ structural observations reveal the hierarchical spatial confinement by the elaborated all-in-one network (within 12 mA h cm–2). Consequently, the elaborate strategy enables a dendrite-free behavior with excellent kinetics (low overpotential of ca. 65 mV at a high rate of 20 mA cm–2) and stable cycle life (over 800 cycles), pushing forward the next-generation high-performance ZABs.