CoP Nanosheet Arrays Supported on a Ti Plate: An Efficient Cathode for Electrochemical Hydrogen Evolution

Abstract

KH 2 PO 4 and K 2 HPO 4 •3H 2 O were purchased from Beijing Chemical Corp. (China). Co(NO 3 ) 2 •6H 2 O, H 2 SO 4 and KOH were purchased from Tianjin Fuyu Chemical Reagent Co. Ltd. (China). NaH 2 PO 2 was purchased from Alladin Ltd.

Tunable and Specific Formation of C@NiCoP Peapods with Enhanced HER Activity and Lithium Storage Performance

“…The measured Ta fel slope for Pt/ C, C@Ni 2 P, C@Ni 1.5 Co 0.5 P, C@NiCoP,a nd Co 2 Pb ulk is 30, 74, 50, 43, and 120 mV dec ,r espectively;t hesed ata are in the range reported by previous studies on non-precious-metal HER catalysts. [37][38][39] To furthera ssess the intrinsic activityo ft he as-prepared catalyst, the exchange current density was calculated by extrapolating the Tafel plot. It was noted that the peapodlike C@NiCoP shows an exchange current density of as high as 0.21 mA cm…”

Highly branched cobalt phosphide nanostructures for hydrogen-evolution electrocatalysis

“…Indeed, comparable HER activity has been observed by several groups for CoP materials that span a range of morphologies, synthetic protocols, accessible surface areas, and support materials. [4][5][6][7][8][9][10][11] A key nding of this work is that the activities are largely the same, regardless of morphology or preparation method, underscoring the high intrinsic activity of CoP. The intrinsic HER activity of CoP makes it a highly viable candidate for practical applications, regardless , along with Ti foil and Pt mesh electrodes for comparison.…”

CoP nanosheet assembly grown on carbon cloth: A highly efficient electrocatalyst for hydrogen generation

“…Similar to Ni 2 P and MoS 2 catalysts, CoP is also known to be active for both hydrodesulphurization and hydrogen evolution reactions [46][47][48][49]. Various types of CoP catalysts have been reported including single-crystalline hollow CoP nanoparticles on Ti foil [46], electrochemically deposited CoP films [50], CoP nanocrystals on carbon nanotube or glassy carbon electrodes [47], porous CoP nanowires on carbon cloth [48], CoP nanosheets on a Ti plate [51], and porous template-grown CoP nanowires [52]. Although the CoP catalysts have been extensively studied in water-splitting, the Tafel slope for HER reported so far ranges from 43 mV/dec to 105 mV/dec (See supporting Table S1 for details).…”