Pulse Electrodeposition of a Superhydrophilic and Binder-Free Ni- Fe-P Nanostructure as Highly Active and Durable Electrocatalyst for Both Hydrogen and Oxygen Evolution Reactions

被引:100
作者
Darband, Ghasem Barati [2 ,3 ]
Aliofkhazraei, Mahmood [2 ]
Hyun, Suyeon [1 ]
Shanmugam, Sangaraju [1 ]
机构
[1] Daegu Gyeongbuk Inst Sci & Technol DGIST, Dept Energy Sci & Engn, Daegu 42988, South Korea
[2] Tarbiat Modares Univ, Dept Mat Engn, Tehran 14115143, Iran
[3] Ferdowsi Univ Mashhad, Fac Engn, Mat & Met Engn Dept, Mashhad 917751111, Razavi Khorasan, Iran
关键词
pulse electrodeposition; hydrogen evolution reaction; oxygen evolution reaction; Ni-Fe-P nanostructure; BIFUNCTIONAL ELECTROCATALYST; EFFICIENT; CATALYSTS; NANOSHEETS; CO; COATINGS; FOAM;
D O I
10.1021/acsami.0c13648
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Development and fabrication of electrodes with favorable electrocatalytic activity, low-cost, and excellent electrocatalytic durability are one of the most important issues in the hydrogen production area using the electrochemical water splitting process. We use the pulse electrodeposition method as a versatile and cost-effective approach to synthesize three-dimensional Ni-Fe-P electrocatalysts on nickel nanostructures under various applied frequencies and duration times, in which nanostructures exhibit excellent intrinsic electrocatalytic activity. Benefiting from the three-dimensional structure, as well as the simultaneous presence of the three elements nickel, iron, and phosphorus, the electrode fabricated at the optimal conditions has indicated outstanding electrocatalytic activity with a eta(10) of 66 and 198 mV for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, in a 1.0 M KOH solution. Also, the water electrolysis cell constructed with this electrode and tested as a bifunctional electrode exhibited 1.508 V for 10 mA cm(-2) in overall water splitting. In addition, the lowest amount of potential change in 100 mA cm(-2 )was observed for HER and OER, indicating excellent electrocatalytic stability. This study proposes a binder-free and economical technique for the synthesis of three-dimensional electrocatalysts.
引用
收藏
页码:53719 / 53730
页数:12
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