Hollow Nanocages of Ni_xCo_1-xSe for Efficient Zinc-Air Batteries and Overall Water Splitting.

ABSTRACT: Developing Earth-abundant, highly efficient, and anti-corrosion electrocatalysts to boost the oxygen evolution reaction (OER), oxygen reduction reaction (ORR), and hydrogen evolution reaction (HER) for the Zn-air battery (ZAB) and for overall water splitting is imperative. In this study, a novel process starting with Cu₂O cubes was developed to fabricate hollow Ni_xCo_1-xSe nanocages as trifunctional electrocatalysts for the OER, ORR, and HER and a reasonable formation mechanism was proposed. The Ni_0.2Co_0.8Se nanocages exhibited higher OER activity than its counterparts with the low overpotential of 280 mV at 10 mA cm^-2. It also outperformed the other samples in the HER test with a low overpotential of 73 mV at 10 mA cm^-2

SUBMITTER: Qian Z 

PROVIDER: S-EPMC7770759 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature