Obtaining efficient and stable catalysts remains a major challenge for hydrogen production via water electrolysis.Currently,researchers have developed many highly active noble metal catalysts;however,their scarcity and high cost severely hinder their large-scale application.Transition metal cobalt,with its abundant reserves and low cost while possessing considerable catalytic activity,has gradually emerged as a research focus for replacing noble metal catalysts.In this work,cobalt phosphide (CoP) catalysts with different concentration ratios were synthesized via constant-current electrodeposition to investigate the structure-activity relationship between their structure and hydrogen evolution performance.In alkaline media,the CoP (2∶1) catalyst achieved an overpotential of 129 mV at a current density of 10 mA·cm-2 and a Tafel slope of 112 mV·dec-1.After a 24 h chronoamperometry test,the catalytic performance showed almost no decay,demonstrating excellent stability.
ChuS, MajumdarA. Opportunities and challenges for a sustainable energy future[J]. Nature, 2012, 488(7411):294-303.
[2]
WangK, DuH, HeS, et al. Kinetically controlled,scalable synthesis of γ-FeOOH nanosheet arrays on nickel foam toward efficient oxygen evolution:The key role of in-situ-generated γ-NiOOH[J]. Advanced Materials, 2021, 33(11):2005587.
[3]
GuoF, ZhangM, YiS, et al. Metal-coordinated porous polydopamine nanospheres derived Fe3N-FeCo encapsulated N-doped carbon as a highly efficient electrocatalyst for oxygen reduction reaction[J]. Nano Research Energy, 2022, 1:9120027.
[4]
ZhongW, XiaoB, LinZ, et al. RhSe2:A superior 3D electrocatalyst with multiple active facets for hydrogen evolution reaction in both acid and alkaline solutions[J]. Advanced Materials, 2021, 33(9):2007894.
[5]
KreuterW, HofmannH. Electrolysis:The important energy transformer in a world of sustainable energy[J]. International Journal of Hydrogen Energy, 1998, 23(8):661-666.
[6]
ChatenetM, PolletB G, DekelD R, et al. Water electrolysis:From textbook knowledge to the latest scientific strategies and industrial developments[J]. Chemical Society Reviews, 2022, 51(11):4583-4762.
[7]
GasteigerH A, KochaS S, SompalliB, et al. Activity benchmarks and requirements for Pt,Pt-alloy,and non-Pt oxygen reduction catalysts for PEMFCs[J]. Applied Catalysis B:Environmental, 2005, 56(1):9-35.
[8]
ZhangY, GaoF, WangD, et al. Amorphous/Crystalline heterostructure transition-metal-based catalysts for high-Performance water splitting[J]. Coordination Chemistry Reviews, 2023, 475:214916.
[9]
ZhangB, ShanJ, WangW, et al. Oxygen vacancy and core-shell heterojunction engineering of anemone-like CoP@CoOOH bifunctional electrocatalyst for efficient overall water splitting[J]. Small, 2022, 18(12):2106012.
[10]
FaberM S, JinS. Earth-abundant inorganic electrocatalysts and their nanostructures for energy conversion applications[J]. Energy & Environmental Science, 2014, 7(11):3519-3542.
[11]
IraheemS, YasinG, KumarA, et al. Iron-cation-coordinated cobalt-bridged-selenides nanorods for highly efficient photo/electrochemical water splitting[J]. Applied Catalysis B:Environmental, 2022, 304:120987.
[12]
ShenS, WangZ, LinZ, et al. Crystalline-amorphous interfaces coupling of CoSe2/CoP with optimized d-band center and boosted electrocatalytic hydrogen evolution[J]. Advanced Materials, 2022, 34(13):2110631.
[13]
WangY, KongB, ZhaoD, et al. Strategies for developing transition metal phosphides as heterogeneous electrocatalysts for water splitting[J]. Nano Today, 2017, 15:26-55.
[14]
HuF, YuD, YeM, et al. Lattice-matching formed mesoporous transition metal oxide heterostructures advance water splitting by active Fe-O-Cu bridges[J]. Advanced Energy Materials, 2022, 12(19):2200067.
[15]
ZhouJ, ZhuC, ZhouY, et al. Composition and phase engineering of metal chalcogenides and phosphorous chalcogenides[J]. Nature Materials, 2023, 22(4):450-458.
PopczunE J, ReadC G, RoskeC W, et al. Highly active electrocatalysis of the hydrogen evolution reaction by cobalt phosphide nanoparticles[J]. Angewandte Chemie International Edition, 2014, 53(21):5427-5430.
[18]
KibsgaardJ, TsaiC, ChenK, et al. Designing an improved transition metal phosphide catalyst for hydrogen evolution using experimental and theoretical trends[J]. Energy & Environmental Science, 2015, 8(10):3022-3029.
[19]
MenY, TanY, LiP, et al. Tailoring the 3d-orbital electron filling degree of metal center to boost alkaline hydrogen evolution electrocatalysis[J]. Applied Catalysis B:Environmental, 2021, 284:119718.
AmberH, BalciunaiteA, SukackieneZ, et al. Electrolessly deposited cobalt-phosphorus coatings for efficient hydrogen and oxygen evolution reactions[J]. Catalysts, 2025, 15(1):8.
[22]
ZhangL, ShiX, XuA, et al. Novel CoP/CoMoP2 heterojunction with nanoporous structure as an efficient electrocatalyst for hydrogen evolution[J]. Nano Research, 2024, 17(5):3693-3699.
[23]
ObodoR M, NsudeH E, DuruM O, et al. Probing the performance of Co-precipitated Co3(PO4)2@W3(PO4)4/GO electrodes for supercapacitor application[J]. Materials Chemistry and Physics, 2024, 328:129906.
[24]
HongnaZ, YueZ, HuheB, et al. Versatile catalytic performance of magnetic and reusable mesoporous Co3(PO4)2 in benzyl alcohol oxidation and esterification with acetic acid[J]. Journal of Porous Materials, 2024, 31(3):989-1004.
[25]
HuangG, HuangY, AliA, et al. Phase-controllable cobalt phosphide heterostructure for efficient electrocatalytic hydrogen evolution in water and seawater[J]. Electron, 2024, 2(3):e58.
[26]
RenK, XuW J, LiK, et al. Br-induced d-band regulation on superhydrophilic isostructural cobalt phosphide for efficient overall water splitting[J]. Advanced Functional Materials, 2025, 35(8):2415585.
[27]
NingS, WuQ, ZhuY, et al. N-doped carbon nanowire array confined cobalt phosphides as efficient bifunctional electrocatalysts for water splitting[J]. Inorganic Chemistry Frontiers, 2023, 10(7):2145-2153.
[28]
QinN, GanQ, ZhuangZ, et al. Hierarchical doping engineering with active/inert dual elements stabilizes LiCoO2 to 4.6 V[J]. Advanced Energy Materials, 2022, 12(31):2201549.
[29]
ZhaD, WangR, TianS, et al. Defect engineering and carbon supporting to achieve Ni-doped CoP3 with high catalytic activities for overall water splitting[J]. Nano-Micro Letters, 2024, 16(1):250.