Nickel sulfide and nickel phosphide have been widely applied as catalysts for electrochemical water splitting owing to their high catalytic property for hydrogen evolution (HER) and oxygen evolution reaction (OER).In order to improve their catalytic activity,NiS2 and Ni2P nanosheets with porous structure were synthesized via a two-step method,and investigated the corresponding electrocatalytic properties towards OER.Meanwhile,the catalytic properties of the two catalysts were also compared.The results revealed that the two catalysts described above exhibit good activity and stability.Compared to the catalyst of NiS2,the Ni2P catalyst exhibited relatively smaller Tafel slope (84mV/dec),higher catalytic performance and better stability.
[1] Zou X,Zhang Y.Noble metal-free hydrogen evolution catalysts for water splitting[J].Chemical Society Reviews,2015,44:5148-5180.
[2] Xiao X,Huang D,Fu Y,et al.Engineering NiS/Ni2P heterostructures for efficient electrocatalytic water splitting[J].ACS Applied Materials & Interfaces,2018,10:4689-4696.
[3] Liu Y,Jiang S,Li S,et al.Interface engineering of (Ni,Fe) S2@MoS2 heterostructures for synergetic electrochemical water splitting[J].Applied Catalysis B:Environmental,2019,247:107-114.
[4] Dong B,Zhao X,Han G,et al.Two-step synthesis of binary Ni-Fe sulfides supported on nickel foam as highly efficient electrocatalysts for the oxygen evolution reaction[J].Journal of Materials Chemistry A,2016,4:13499-13508.
[5] Gong M,Dai H.A mini review of NiFe-based materials as highly active oxygen evolution reaction electrocatalysts[J].Nano Research,2015,8:23-39.
[6] Liu H,He Q,Jiang H,et al.Electronic structure reconfiguration toward pyrite NiS2 via engineered heteroatom defect boosting overall water splitting[J].ACS Nano,2017,11:11574-11583.
[7] Liang X,Zheng B,Chen L,et al.MOF-derived formation of Ni2P-CoP bimetallic phosphides with strong interfacial effect toward electrocatalytic water splitting[J].ACS Applied Materials & Interfaces,2017,9:23222-23229.
[8] Zeng L,Sun K,Wang X,et al.Three-dimensional-networked Ni2P/Ni3S2 heteronanoflake arrays for highly enhanced electrochemical overall-water-splitting activity[J].Nano Energy,2018,51:26-36.
[9] Li Q,Wang D,Han C,et al.Construction of amorphous interface in an interwoven NiS/NiS2 structure for enhanced overall water splitting[J].Journal of Materials Chemistry A,2018,6:8233-8237.
[10] Guo Y,Guo D,Ye F,et al.Synthesis of lawn-like NiS2 nanowires on carbon fiber paper as bifunctional electrode for water splitting[J].International Journal of Hydrogen Energy,2017,42:17038-17048.
[11] Thangasamy P,Maruthapandian V,Saraswathy V,et al.Supercritical fluid processing for the synthesis of NiS2 nanostructures as efficient electrocatalysts for electrochemical oxygen evolution reactions[J].Catalysis Science & Technology,2017,7:3591-3597.
[12] Stern L,Feng L,Song F,et al.Ni2P as a Janus catalyst for water splitting:the oxygen evolution activity of Ni2P nanoparticles[J].Energy & Environmental Science,2015,8:2347-2351.
[13] Sun H,Xu X,Yan Z,et al.Porous multishelled Ni2P hollow mMicrospheres as an active electrocatalyst for hydrogen and oxygen evolution[J].Chemistry of Materials,2017,29:8539-8547.
[14] Sun Y,Hang L,Shen Q,et al.Mo doped Ni2P nanowire arrays:an efficient electrocatalyst for the hydrogen evolution reaction with enhanced activity at all pH values[J].Nanoscale,2017,9:16674-16679.
[15] Tang C,Pu Z,Liu Q,et al.NiS2 nanosheets array grown on carbon cloth as an efficient 3D hydrogen evolution cathode[J].Electrochimica Acta,2015,153:508-514.
[16] Tian T,Huang L,Ai L,et al.Surface anion-rich NiS2 hollow microspheres derived from metal-organic frameworks as a robust electrocatalyst for the hydrogen evolution reaction[J].Journal of Materials Chemistry A,2017,5:20985-20992.
[17] You B,Jiang N,Sheng M,et al.Hierarchically porous urchin-like Ni2P superstructures supported on nickel foam as efficient bifunctional electrocatalysts for overall water splitting[J].ACS Catalysis,2016,6:714-721.
[18] 李斯文.钴基纳米材料的合成及电化学性能研究[D].上海:复旦大学,2017.
[19] 孟会杰.三维多孔过渡金属基磷/硫纳米电极的制备及其电催化性能研究[D].太原:太原理工大学,2018.
[20] Zhang X,Wang S,Wang G,et al.Facile synthesis of NiS2@MoS2 core-shell nanospheres for effective enhancement in microwave absorption[J].RSC Advances,2017,7:22454-22460.
[21] Wang L,Zhu Y,Li H,et al.Hydrothermal synthesis of NiS nanobelts and NiS2 microspheres constructed of cuboids architectures[J].Journal of Solid State Chemistry,2010,183:223-227.
[22] Lu Y,Tu J,Xiong Q,et al.Synthesis of dinickel phosphide (Ni2P) for fast lithium-ion transportation:a new class of nanowires with exceptionally improved electrochemical performance as a negative electrode[J].RSC Advances,2012,2:3430-3436.
[23] MaiY,Xia X,Jie X.Cross-linked hierarchical arrays of Ni2P nanoflakes prepared via directional phosphorization and their applications for advanced alkaline batteries[J].Journal of Power Sources,2017,367:116-121.
[24] An T,Wang Y,Tang J,et al.Interlaced NiS2-MoS2 nanoflake-nanowires as efficient hydrogen evolution electrocatalysts in basic solutions[J].Journal of Materials Chemistry A,2016,4:13439-13443.
基金资助
国家重点研发计划(2018YFE0196000);国家能源集团重点科技项目(GJNY-19-102、2017E1WP00200和2017B1BE00100);北京市科技重大专项(Z171100002017021)
PDF
(4015KB)
