Reduced water dissociation barrier on constructing Pt-Co/CoOx interface for alkaline hydrogen evolution

Advanced Pt-based electrocatalysts for the hydrogen evolution reaction in alkaline medium

“…52–54 Among these metal oxide carriers, amorphous CoO x with abundant defects and active sites have received extensive research and attention. Wang et al 55 successfully designed a Pt–Co/CoO x catalyst by an in situ constructing interface between the Pt–Co alloy and the amorphous CoO x carrier. The Pt–Co/CoO x catalyst exhibited excellent HER activity in alkaline electrolytes.…”

“…[52][53][54] Among these metal oxide carriers, amorphous CoO x with abundant defects and active sites have received extensive research and attention. Wang et al 55 Additionally, among the hybridized metal catalysts, carbon materials are usually used for loading noble metals. Many studies have shown that doping nitrogen atoms enhance the oxygen affinity of carbon materials.…”

Recent Advances in Ultralow‐Pt‐Loading Electrocatalysts for the Efficient Hydrogen Evolution

“…[49][50] In addition, directly optimizing the intrinsic activity of every single active site is another feasible method to reduce the Pt usage. [51][52][53] In this aspect, alloys and polymetallic compounds consisting of Pt and non-noble metals (such as Co, [54][55] Ni, [56][57][58] Fe, [59][60] Cu [61][62] ) have been broadly explored. Apart from the size effect of Pt, non-noble metals can reconstruct the surface electronic structure through interactions.…”

Dual roles of sub-nanometer NiO in alkaline hydrogen evolution reaction: breaking the Volmer limitation and optimizing d-orbital electronic configuration

“…Numerous studies of transition metal-based materials including oxides, [23][24][25][26] sulfides [27][28][29] and phosphides [30][31][32][33][34] have been proven to show outstanding ability for dissociating H-OH bonds in alkaline media. 35,36 Typically, by coupling the metal Pt with transition metal oxides (TMOs), 37 the alkaline HER (A-HER) activity of the catalyst can be significantly boosted due to the synergetic catalytic effect of oxide sites with highly efficient water adsorbing and dissociating ability. [38][39][40] Besides, the strong interaction at the interface between the TMOs and Pt can rearrange the electronic properties of the Pt sites, further accelerating the reaction kinetics in the A-HER.…”