TY - JOUR
T1 - Significantly Stabilizing Hydrogen Evolution Reaction Induced by Nb-Doping Pt/Co(OH)2 Nanosheets
AU - Tian, Yakun
AU - Wen, Ming
AU - Huang, Aijian
AU - Wu, Qingsheng
AU - Wang, Zhiguo
AU - Zhu, Quanjing
AU - Zhou, Tao
AU - Fu, Yongqing (Richard)
N1 - Funding information: This work was financially supported by the National Natural Science Foundation (NSFC No: 22171212), the Science and Technology Committee of Shanghai Municipality (21160710300, 19DZ2271500, 2022-4-YB-1, and 2022-4-YB-12) by China, the International Exchange Grant (IEC/NSFC/201078) through Royal Society UK and NSFC.
PY - 2023/5/17
Y1 - 2023/5/17
N2 - High stability and efficiency of electrocatalysts are crucial for hydrogen evolution reaction (HER) toward water splitting in an alkaline media. Herein, a novel nano-Pt/Nb-doped Co(OH)2 (Pt/NbCo(OH)2) nanosheet is designed and synthesized using water-bath treatment and solvothermal reduction approaches. With nano-Pt uniformly anchored onto NbCo(OH)2 nanosheet, the synthesized Pt/NbCo(OH)2 shows outstanding electrocatalytic performances for alkaline HER, achieving a high stability for at least 33 h, a high mass activity of 0.65 mA µg−1 Pt, and a good catalytic activity with a low overpotential of 112 mV at 10 mA cm−2. Both experimental and theoretical results prove that Nb-doping significantly optimizes the hydrogen adsorption free energy to accelerate the Heyrovsky step for HER, and boosts the adsorption of H2O, which further enhances the water activation. This study provides a new design methodology for the Nb-doped electrocatalysts in an alkaline HER field by facile and green way.
AB - High stability and efficiency of electrocatalysts are crucial for hydrogen evolution reaction (HER) toward water splitting in an alkaline media. Herein, a novel nano-Pt/Nb-doped Co(OH)2 (Pt/NbCo(OH)2) nanosheet is designed and synthesized using water-bath treatment and solvothermal reduction approaches. With nano-Pt uniformly anchored onto NbCo(OH)2 nanosheet, the synthesized Pt/NbCo(OH)2 shows outstanding electrocatalytic performances for alkaline HER, achieving a high stability for at least 33 h, a high mass activity of 0.65 mA µg−1 Pt, and a good catalytic activity with a low overpotential of 112 mV at 10 mA cm−2. Both experimental and theoretical results prove that Nb-doping significantly optimizes the hydrogen adsorption free energy to accelerate the Heyrovsky step for HER, and boosts the adsorption of H2O, which further enhances the water activation. This study provides a new design methodology for the Nb-doped electrocatalysts in an alkaline HER field by facile and green way.
KW - Nb-doping Co(OH)2 nanosheets
KW - Significantly stabilizing effect
KW - Hydrogen evolution reaction
KW - Electrocatalysis
KW - Alkaline medium
KW - Nb-doping Co(OH) nanosheets
KW - alkaline medium
KW - hydrogen evolution reaction
KW - electrocatalysis
KW - significantly stabilizing effect
UR - https://www.scopus.com/pages/publications/85148720483
U2 - 10.1002/smll.202207569
DO - 10.1002/smll.202207569
M3 - Article
SN - 1613-6810
VL - 19
JO - Small
JF - Small
IS - 20
M1 - 2207569
ER -
