. 2017 Jan 30;8:14169. doi: 10.1038/ncomms14169

Table 1. Calculated OER energetics at the available basal plane sites and edge sites of the bilayer (Co–O) and trilayer (O–Co–O) nanostripes.

Specific site/OER energetics	ΔG_OH*(eV)	ΔG_O*(eV)	ΔG_OOH*(eV)	Calculated overpotential η_cal (V)
OER active range (min, max)	(−0.5, 2.2)	(1.7, 4.4)	(2.7, 5.4)	<1
Basal plane OER energetics
Bilayers: OH-site on basal plane	−0.57	0.05	NA	>1 (ads. too strong)
Bilayers: O-site on basal plane	−0.48	−0.02	NA	>1 (ads. too strong)
Trilayers: OH-site on basal plane	−1.09	0.06	NA	>1 (ads. too strong)
Trilayers: O-site on basal plane	−1.39	−0.77	NA	>1 (ads. too strong)

Edge-site OER energetics
Bilayers: top of the metal-edge	1.37	3.03	4.53	0.43
Trilayers: bottom of O-edge near Au	0.17	1.99	3.31	0.60
Trilayers: top of the metal-edge	1.51	3.03	4.60	0.33 (optimal)