Hierarchical porous Nickel Cobaltate Nanotube as Electrocatalyst for Lithium-Oxygen Batteries
Year: 2018
Type: article
Abstract: Binary metal oxides are considered as effective catalysts owing to their excellent oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) activity. In this report, NiCo 2 O 4 nanotube with hierarchical porous structure is synthesized through a hydrothermal method and following annealing. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show its morphology of nanotube and subunit of nanoflake. BET N 2 adsorption-desorption test shows a high specific surface area of 129.03 m 2 g -1 and hierarchical pores ranging 2-5 nm. When used as lithium-oxygen batteries electrocatalyst, it evidently reduces overpotential (2.64/3.92 V) and improves the specific capacity (1979 mAh g -1 ) and cycle life (42 cycles) of the cell.
DOI: 10.20964/2018.04.32
Authors: Xiang Chen, Peng Kuang, Chunguang Chen, Xiuhui Zhang, Tao Huang, Lijuan Zhang, Aishui Yu
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,670
OpenAlex ID: W2793070754