TY - JOUR
T1 - Ru Modulation Effects in the Synthesis of Unique Rod-like Ni@Ni2P-Ru Heterostructures and Their Remarkable Electrocatalytic Hydrogen Evolution Performance
AU - Liu, Ying
AU - Liu, Suli
AU - Wang, Yu
AU - Zhang, Qinghua
AU - Gu, Lin
AU - Zhao, Shuchen
AU - Xu, Dongdong
AU - Li, Yafei
AU - Bao, Jianchun
AU - Dai, Zhihui
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/2/28
Y1 - 2018/2/28
N2 - The construction of highly efficient and stable Pt-free catalysts for electrochemical hydrogen generation is highly desirable. Herein, we demonstrate the first metal-phosphides-metal system consisting of Ru, Ni2P, and Ni, which forms unique multiheterogeneous Ni@Ni2P-Ru nanorods. Interestingly, a Ru modulation effects that promotes the desorption of H2 to achieve a moderate hydrogen adsorption energy (Î"GH), and enables the formation of Ni@Ni2P nanorods via Ru-Ni coordination to enhance the conductivity was discovered. Due to its optimal Î"GH, improved conductivity and rod-like morphology, this catalyst shows superior electrocatalytic HER performances in both acidic and alkaline conditions, which are superior to those of some recently reported phosphides and close to that of commercial 20% Pt/C. Such a design strategy is not limited to Ni2P and Ru but also may be extended to other similar phosphides and noble metals, providing a new promising approach and an alternative to Pt catalysts for electrocatalytic applications.
AB - The construction of highly efficient and stable Pt-free catalysts for electrochemical hydrogen generation is highly desirable. Herein, we demonstrate the first metal-phosphides-metal system consisting of Ru, Ni2P, and Ni, which forms unique multiheterogeneous Ni@Ni2P-Ru nanorods. Interestingly, a Ru modulation effects that promotes the desorption of H2 to achieve a moderate hydrogen adsorption energy (Î"GH), and enables the formation of Ni@Ni2P nanorods via Ru-Ni coordination to enhance the conductivity was discovered. Due to its optimal Î"GH, improved conductivity and rod-like morphology, this catalyst shows superior electrocatalytic HER performances in both acidic and alkaline conditions, which are superior to those of some recently reported phosphides and close to that of commercial 20% Pt/C. Such a design strategy is not limited to Ni2P and Ru but also may be extended to other similar phosphides and noble metals, providing a new promising approach and an alternative to Pt catalysts for electrocatalytic applications.
UR - http://www.scopus.com/inward/record.url?scp=85042643196&partnerID=8YFLogxK
U2 - 10.1021/jacs.7b12615
DO - 10.1021/jacs.7b12615
M3 - 文章
C2 - 29415541
AN - SCOPUS:85042643196
SN - 0002-7863
VL - 140
SP - 2731
EP - 2734
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 8
ER -