Mn-doped nickel–iron phosphide heterointerface nanoflowers for efficient alkaline freshwater/seawater splitting at high current densities

LaCoO3−δ–CoO–Partially Exfoliated Carbon Nanotube Composites as Efficient Oxygen Reduction Catalysts for Zn–Air Batteries

“…The binding energy differences between Co 2p 3/2 and Co 2p 1/2 of Co 3+ (780.6 and 796.3 eV) and Co 2+ (782.3 and 798.0 eV) are at the range of 15−16 eV, which is consistent with the results of previous reports. 13,29,30 The satellite peaks located at 786.7 and 803.6 eV, which are an important characteristic for the CoO phase, are also recorded in Figure 3c. 31 Moreover, the proportion of Co 2+ is at a high level (47.6%; Table S2) for the existence of CoO and oxygen vacancies.…”

Constructing Amorphous–Crystalline Interfaces of Nickel–Iron Phosphides/Oxides for Oxygen Evolution Reaction

“…Interface engineering with different appropriate components is able to modulate the electronic structure, accelerate charge transfer, and optimize the adsorption/desorption energies of OER intermediates . Therefore, many oxides, chalcogenides, nitrides, and metals have been successfully introduced on TMOs to construct heterointerfaces with improved OER performance. − Transition-metal phosphides (TMPs) with metallic properties not only present outstanding catalytic activity in HER but also can be in situ converted into corresponding hydroxides/oxyhydroxides in an alkaline electrolyte and show impressive OER performances. , Recently, Ge et al constructed TMP/TMO heterointerfaces through the phosphorization of layered double hydroxide (LDH)/TMO heterostructures for enhanced OER . To facilitate the in situ conversion of TMPs, introducing amorphous TMPs to TMOs may be a better choice.…”

“…16−19 Transition-metal phosphides (TMPs) with metallic properties not only present outstanding catalytic activity in HER but also can be in situ converted into corresponding hydroxides/ oxyhydroxides in an alkaline electrolyte and show impressive OER performances. 20,21 Recently, Ge et al constructed TMP/ TMO heterointerfaces through the phosphorization of layered double hydroxide (LDH)/TMO heterostructures for enhanced OER. 22 To facilitate the in situ conversion of TMPs, introducing amorphous TMPs to TMOs may be a better choice.…”

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.…”