Design of Hollow Porous P-NiCo 2 O 4 @Co 3 O 4 Nanoarray and Its Alkaline Aqueous Zinc-Ion Battery Performance.

Autor: Liang, Zhe, Lv, Chenmeng, Wang, Luyao, Li, Xiran, Cheng, Shiwen, Huo, Yuqiu
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Zdroj: International Journal of Molecular Sciences; Nov2023, Vol. 24 Issue 21, p15548, 12p
Abstrakt: Alkaline aqueous zinc-ion batteries possess a wider potential window than those in mildly acidic systems; they can achieve high energy density and are expected to become the next generation of energy storage devices. In this paper, a hollow porous P-NiCo2O4@Co3O4 nanoarray is obtained by ion etching and the calcination and phosphating of ZiF-67, which is directly grown on foam nickel substrate, as a precursor. It exhibits excellent performance as a cathode material for alkaline aqueous zinc-ion batteries. A high discharge specific capacity of 225.3 mAh g−1 is obtained at 1 A g−1 current density, and it remains 81.9% when the current density is increased to 10 A g−1. After one thousand cycles of charging and discharging at 3 A g−1 current density, the capacity retention rate is 88.8%. Even at an excellent power density of 25.5 kW kg−1, it maintains a high energy density of 304.5 Wh kg−1. It is a vital, promising high-power energy storage device for large-scale applications. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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