Accelerating water dissociation kinetics on Ni3S2 nanosheets by P-induced electronic modulation

Phosphorized CoNi2S4 Yolk‐Shell Spheres for Highly Efficient Hydrogen Production via Water and Urea Electrolysis

“…Besides, cation doping can also significantly increase the content of high‐valence Ni 3+ (NiOOH) species, which have been identified as the catalytic active sites for anodic OER and UOR [14, 19, 21, 22] . Recently, phosphorization has also been widely reported to improve the HER intrinsic activity and conductivity by tuning the electronic structure and distorting the lattices of the parent sulfides [23–26] . Morphological and structural engineering is another efficient approach for enhancing the catalytic performance through exposing more active sites.…”

“…[14,19,21,22] Recently,p hosphorization has also been widely reported to improve the HER intrinsic activity and conductivity by tuning the electronic structure and distorting the lattices of the parent sulfides. [23][24][25][26] Morphological and structural engineering is another efficient approach for enhancing the catalytic performance through exposing more active sites.I np articular,p orous yolk-shell structures are favored because of their high specific surface area, large void volume,and reduced ion-diffusion path. [27][28][29] Inspired by these advancements in multielement Ni-based sulfide electrocatalysts,w er ationally design and synthesize porous phosphorus substituted CoNi 2 S 4 yolk-shell spheres (P-CoNi 2 S 4 YSSs) via af acial hydrothermal sulfidation and subsequent gas-phase phosphorization strategy (Figure 1).…”

Boosting Hydrogen Evolution Reaction of Nickel Sulfides by Introducing Nonmetallic Dopants

“…However, except N, − there are much less researches on modifying catalytic activity of Ni 3 S 2 by doping other nonmetal atoms, such as C, O, P, and B, despite that a range of nonmetal atoms have been successfully used for designing other electrocatalysts, such as C-doped MoS 2 , O-doped MoS 2 and Co 2 P, P-doped Co 3 Mo 3 C and graphene , and CoS 2 , and B-doped NiPS 3 and Pd . Most recently, Qin et al confirmed that the introduction of P into Ni 3 S 2 can modify the electronic structure of Ni 3 S 2 , optimize H ad-desorption and accelerate water dissociation. In this regard, exploring the potential of various nonmetallic dopants decorated Ni 3 S 2 for improving HER catalytic activity can supply more strategies for designing and constructing high performance electrocatalysts.…”

“…However, except N, 26−29 there are much less researches on modifying catalytic activity of Ni 3 S 2 by doping other nonmetal atoms, such as C, O, P, and B, despite that a range of nonmetal atoms have been successfully used for designing other electrocatalysts, such as C-doped MoS 2 , 30 O-doped MoS 2 31 and Co 2 P, 32 P-doped Co 3 Mo 3 C 28 and graphene 26,27 and CoS 2 , 29 and B-doped NiPS 3 33 and Pd. 34 Most recently, Qin et al 35 In this work, a series of X-doped Ni 3 S 2 (X−Ni 3 S 2 , X = B, C, N, O, P) electrocatalysts are systematically explored to screen high performance X−Ni 3 S 2 for HER by combing both theoretical and experimental methods. The bulk and surface energies, surface charge states of X−Ni 3 S 2 are calculated first to investigate their surface stability and electronic structure.…”

Efficient Hydrogen Evolution Reaction on Ni3S2 Nanorods with a P/N Bipolar Electrode Prepared by Dealloying Sulfurization of NiW Amorphous Alloys

“…In recent years, although the nanostructures (nanosheets, nanorods, and nanoarrays), − composite (MoS 2 @CdS nanorods) and dopants (N doping of CoS 2 ) of TMS have been reported to show good HER catalytic performance, and further improvements in conductivity and electronic structure engineering are still needed in order for some TMS (e.g., nickel sulfide) to realize its full potential for electrocatalytic hydrogen evolution. To our knowledge, few reports have so far systematically investigated the effects of point defects (vacancies, substituted dopants, etc.)…”