氢氧化钴
钴
无定形固体
材料科学
电化学
化学工程
拉曼光谱
氢氧化物
催化作用
无机化学
纳米技术
化学
电极
冶金
有机化学
物理
光学
物理化学
工程类
作者
Min‐Jeong Lee,Gwang Ho Yoon,Min Kyeong Kim,John Hong,Seunghwa Lee,Gyeong Hee Ryu
标识
DOI:10.1016/j.jallcom.2023.173282
摘要
Ultrathin two-dimensional nanosheets have attracted attention as nanostructures that maximize the electrochemical performance in energy storage and conversion because of their unique advantages of large specific surface areas and large exposure to active sites. Herein, we synthesized cobalt hydroxide nanosheets with an amorphous phase and a thickness of <1.5 nm. Amorphous cobalt hydroxide nanosheets grown according to the surfactant concentration were converted into crystalline cobalt oxides through a simple heat treatment. The change in the electrochemical oxygen evolution reaction performance according to this process was investigated in detail by ex- and in-situ Raman spectroscopy, and the supercapacitor performance was confirmed. This study provides promising guidelines for developing phase-dependent catalysts from cobalt hydroxide and cobalt oxides and highlights the critical role of the crystal structure in facilitating electrocatalytic processes.
科研通智能强力驱动
Strongly Powered by AbleSci AI