1. N‐doped Nanocarbon Inserted NiCo‐LDH Nanoplates on NF with High OER/ORR Performances for Zinc‐Air Battery.
- Author
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Jia, Zhe, Shang, Jiayin, Xue, Kaijing, Yang, Xi, Wang, Sumin, Xu, Changhua, and Wang, Qiguan
- Subjects
DOPING agents (Chemistry) ,HYDROGEN evolution reactions ,ENERGY density ,OXYGEN evolution reactions ,DICYANDIAMIDE ,FOAM - Abstract
Herein, a high performance bifunctional catalyst was prepared by inserting N‐doped nanomaterials into Ni−Co layered dihydroxides (NiCo‐LDH) nanoplates for high performance zinc‐air battery. By using self‐assembly of perylenetetracarboxylic dianhydride and dicyandiamide in the hydrothermal condition, a nitrogen‐containing super thin carbonaceous nanosheet is achieved after calcination. Then NCM inserted NiCo‐LDH nanoplates attached to nickel foam (NiCo‐LDH/NCM@NF) are synthesized by in‐situ production of NiCo‐LDH species on NCM wrapped NF. The specific NCM improves the conductivity, electroactive surface area and the ORR/OER bifunctional activity of NiCo‐LDH nanoplates. In addition, benefited from the formed rich oxygen vacancies, NiCo‐LDH/NCM@NF delivers the low OER overpotential (352 mV at 50 mA cm−2) and boosted ORR performance with a half‐wave potential of 0.765 V vs RHE. As the air cathode, the fabricated ZAB devices show a satisfactory capacity of 685 mAh g−1 and the energy density of 158 mW cm−2. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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