Dual Tuning of Ultrathin α‑Co(OH)<sub>2</sub> Nanosheets by Solvent Engineering and Coordination Competition
for Efficient Oxygen Evolution
Zuozhong Liang
Chaochao Zhang
Yang Xu
Wei Zhang
Haoquan Zheng
Rui Cao
10.1021/acssuschemeng.8b05770.s001
https://acs.figshare.com/articles/journal_contribution/Dual_Tuning_of_Ultrathin_Co_OH_sub_2_sub_Nanosheets_by_Solvent_Engineering_and_Coordination_Competition_for_Efficient_Oxygen_Evolution/7599773
Large-scale preparation
of ultrathin 2D Co-based nanosheets is
of great importance in the fields of catalysis, energy conversion,
etc. Herein, we have developed a simple preparation method of 2D ultrathin
α-Co(OH)<sub>2</sub> nanosheets by mixing an aqueous solution
of Co salt and a methanolic solution of 2-methylimidazole at room
temperature. The resulting α-Co(OH)<sub>2</sub> materials are
nanosheets with an average thickness of ∼2.5 nm and the size
in micrometers. Benefiting from the ultrathin thickness, this α-Co(OH)<sub>2</sub> nanosheet exhibits excellent oxygen evolution reaction performance
with an overpotential of 267 mV at <i>j</i> = 10 mA cm<sup>–2</sup>. This strategy can be applied to prepare other 2D
Co-based layered double or triple hydroxides. Therefore, this work
provides new strategies to prepare a series of 2D hydroxide nanosheets
with solvent engineering and coordination competition.
2018-12-26 00:00:00
Co salt
2- methylimidazole
methanolic solution
energy conversion
Efficient Oxygen Evolution Large-scale preparation
Solvent Engineering
Coordination Competition
α-
ultrathin thickness
strategy
2 D Co-based
ultrathin 2 D Co-based nanosheets
267 mV
oxygen evolution reaction performance
2 D hydroxide nanosheets
Dual Tuning
preparation method
coordination competition
room temperature