One-step synthesis of mesoporous Cobalt sulfides (CoSx) on the metal substrate as an efficient bifunctional electrode for overall water splitting

Boosting the oxygen evolution reaction performance through defect and lattice distortion engineering

“…The small Tafel slope and low R ct indicate the improved OER reaction kinetics and the desirable electron transport process, leading to a better water oxidation electrocatalytic performance, due to the enhanced charge-transfer with the formation of the defects and lattice distortions and the unique nanowire structure in Co 9 S 8 /Ni 3 S 2 HNA//NF. 32 Moreover, the presence of defects can benefit charge-transfer across the interfaces between Co 9 S 8 and Ni 3 S 2 .…”

Self-Supported FeNiP Nanosheet Arrays as a Robust Bifunctional Electrocatalyst for Water Splitting

“…In recent years, transition-metal-based electrocatalysts, such as selenides, , borides, , sulfides, , carbides, , nitrides, , and phosphides, , have emerged as alternatives of noble metal electrocatalysts (Pt, IrO 2 , and RuO 2 ) , due to shortage of reserves and high prices. Among these non-noble electrocatalysts, transition metal phosphides (TMPs) are identified to be effective for both the HER and OER and have received substantial attention owing to their excellent catalytic activity and chemical stability. , In addition, bimetallic phosphides with a special interaction between metal atoms are more advantageous than monometallic phosphides in terms of their electrocatalytic performance.…”

UCoO4/Co3O4 Heterojunction as a Low-Cost and Efficient Electrocatalyst for Oxygen Evolution

“…16−18 To overcome this issue, great efforts have been made to increase the conductivity and electrochemical activities using noble metal-doped Co 3 O 4 , 19,20 Co 3 O 4 @MoS 2 , 21 and carbon-supported Co 3 O 4 . 22−24 Cobaltbased sulfides, 25,26 phosphides, 27,28 and selenides 29,30 were also synthesized for water splitting. It has also been reported that the OER catalytic performance of cobalt-based oxides/ hydroxides can be greatly enhanced by heterogeneous metal doping.…”

“…At present, noble metals, such as RuO 2 and IrO 2 , have been considered the best OER catalysts, yet their high price, low abundance, and poor stability have badly affected their large-scale commercial application in electrolysis water hydrogen technology. − Currently, transition metal oxides/hydroxides have been identified as promising candidates for OER. , Particulate Co 3 O 4 has been widely explored due to its earth abundance, low cost, and good electrochemical performance. − For instance, Chen et al reported the synthesis of Co 3 O 4 for enhanced OER performance by shape control strategies . In general, the electrochemical activities of metal oxides are limited by their inherent weak conductivity. − To overcome this issue, great efforts have been made to increase the conductivity and electrochemical activities using noble metal-doped Co 3 O 4 , , Co 3 O 4 @MoS 2 , and carbon-supported Co 3 O 4 . − Cobalt-based sulfides, , phosphides, , and selenides , were also synthesized for water splitting. It has also been reported that the OER catalytic performance of cobalt-based oxides/hydroxides can be greatly enhanced by heterogeneous metal doping. , Recently, Se-doped cobalt oxide nanoparticles exhibited good OER catalytic performance by doping ratio control .…”