Bifunctional Hybrid Ni/Ni2P Nanoparticles Encapsulated by Graphitic Carbon Supported with N, S Modified 3D Carbon Framework for Highly Efficient Overall Water Splitting

被引：48

作者：

Sun, Yiqiang ^{[1
,2
]}

Zhang, Tao ^{[1
,2
]}

Li, Xinyang ^{[1
]}

Bai, Yu ^{[1
]}

Lyu, Xianjun ^{[3
]}

Liu, Guangqiang ^{[1
]}

Cai, Weiping ^{[1
]}

Li, Yue ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Peoples R China

[2] Univ Sci & Technol China, Sci Isl Branch, Hefei 230026, Peoples R China

[3] Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266590, Shandong, Peoples R China

来源：

ADVANCED MATERIALS INTERFACES | 2018年 / 5卷 / 15期

关键词：

bifunctional electrocatalyst; hybrid structures; hydrogen evolution; water oxidation; water splitting; NANOSTRUCTURED NICKEL PHOSPHIDE; HYDROGEN EVOLUTION; OXYGEN EVOLUTION; ACTIVE ELECTROCATALYST; MELAMINE FOAM; DOPED CARBON; SULFIDE; ARRAYS; NANOCRYSTALS; NANOSHEETS;

D O I：

10.1002/admi.201800473

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The novel hybrid Ni/Ni2P nanoparticles with graphitic carbon coating supported by 3D N, S dual modified binder-free macroporous carbon framework (Ni/Ni2P@3DNSC) are reported as an efficient bifunctional electrocatalysts for the production of hydrogen and oxygen. The obtained Ni/Ni2P@3DNSC electrode exhibits an excellent catalytic activity with a low overpotential of 231 mV for oxygen evolution reaction (OER) and 92 mV for hydrogen evolution reaction (HER) due to the strong coupled interface of Ni and Ni2P, synergistic effects between the hybrid Ni/Ni2P core and the graphitic carbon shell, the unique porous structure, and the heteroatoms doped effect. When both are used as cathode and anode, only a low cell voltage of 1.55 V is needed to achieve the current density of 10 mA cm(-2). This work demonstrates a new avenue for the development of bifunctional nonprecious electrocatalysts for the sustainable energy utilization.

引用

页数：9

共 53 条

[1] Cobalt Iron Hydroxide as a Precious Metal-Free Bifunctional Electrocatalyst for Efficient Overall Water Splitting [J].