Fig. 10
From: Noble metal-free two dimensional carbon-based electrocatalysts for water splitting
a Illustration of the synthesis process of CoP@NPMG. Reproduced with permission from Ref. [149]. Copyright 2018, Royal Society of Chemistry. b Graphical representation of CoOx@CN hybrid. c, d Corresponding polarization curve and generation of gas bubbles during over all water splitting. b–d Reproduced with permission from Ref. [151]. Copyright 2015, American Chemical Society. e Schematic representation of synthesis of NiFe LDH-NS@defective graphene. Electrochemical measurements of exfoliated graphene. f Polarization curve of NiFe LDH-NS@defective graphene as OER and HER catalysts in 1.0 M KOH for overall water splitting. g Comparison of NiFe LDH-NS@defective graphene catalyst with other benchmark noble metal-free bifunctional catalysts. h Demonstration of a solar power assisted water-splitting device with a voltage of 1.5 V. e–h Reproduced with permission from Ref. [156]. Copyright 2017, Wiley-VCH