Hierarchical superhydrophilic/superaerophobic CoMnP/Ni₂P nanosheet-based microplate arrays for enhanced overall water splitting

Abstract

The development of efficient and stable non-noble metal bifunctional electrocatalysts for overall water splitting in acidic and alkaline media is highly desirable for industrial water electrolysis, but remains a profound...

Nonmetallic Active Sites on Nickel Phosphide in Oxygen Evolution Reaction

“…Transition metals with partially filled d orbitals are generally the active catalytic sites in OER [ 16 , 17 , 21 , 64 ]. Recently, it has been reported that nonmetal atoms may become the active sites for catalytic reactions in theoretical studies [ 63 , 64 , 65 ].…”

“…Therefore, the development of high-performance and low-cost catalysts is highly desirable. Recently, cheap transition metal oxides [ 14 , 15 ], phosphides [ 16 , 17 , 18 , 19 ], nitrides [ 20 ], sulfides [ 21 , 22 , 23 , 24 ], carbides [ 25 ], etc., have been studied as emerging electrocatalysts, and many show excellent OER catalytic activity.…”

AlP-regulated phosphorus vacancies over Ni–P compounds promoting efficient and durable hydrogen generation in acidic media

“…4f), which is larger than that of P–Ni (23 mF cm −2 , Fig. S7†), np-Ni(Al)-40 (18 mF cm −2 ), Al 85 Ni 15 (6.7 mF cm −2 ) and other reported self-supported electrodes such as CoMnP/Ni 2 P/NF (37.9 mF cm −2 ), 50 P–CoTe 2 /C (28.4 mF cm −2 ) 51 and FeP 2 –NiP 2 @PC (6.3 mF cm −2 ). 52 Afterwards, the electrochemical active surface area (ECSA) can be approximatively reckoned from the value of C dl according to the following formula:ECSA = C dl / C s where C s is the specific capacitance of a flat surface that could be in the range of 20–60 μF cm −2 , and 40 μF cm −2 was selected as a moderate value in this study as in previous studies reported in the literature.…”

Multi-interfacial engineering of a coil-like NiS–Ni2P/Ni hybrid to efficiently boost electrocatalytic hydrogen generation in alkaline and neutral electrolyte

“…Tremendous attention and endeavours have been devoted to earth-abundant electrocatalysts including transition metal carbides/borides/nitrides/oxides/selenides/phosphides/dichalcogenides, [11][12][13][14][15][16][17] and perovskites, 18 and carbon materials 19 have been intensely investigated. Among these electrocatalysts, transition metal phosphides (TMPs) are considered as promising electrocatalysts due to their high activity in all-pH electrolytes, as well as because of the fact that the metal and phosphorus atoms on the surface of metal phosphides serve as proton and hydride acceptor centres, which improves the electronic structures of these electrocatalysts.…”