Nanostructured Nickel Iron Sulfide Grown on Nickel Foam for Highly Active and Durable Water Splitting Electrocatalyst in Alkaline Electrolyte

2017 ◽  
Vol 114 (22) ◽  
pp. 5607-5611 ◽  
Author(s):  
Haiqing Zhou ◽  
Fang Yu ◽  
Jingying Sun ◽  
Ran He ◽  
Shuo Chen ◽  
...  

Commercial hydrogen production by electrocatalytic water splitting will benefit from the realization of more efficient and less expensive catalysts compared with noble metal catalysts, especially for the oxygen evolution reaction, which requires a current density of 500 mA/cm2 at an overpotential below 300 mV with long-term stability. Here we report a robust oxygen-evolving electrocatalyst consisting of ferrous metaphosphate on self-supported conductive nickel foam that is commercially available in large scale. We find that this catalyst, which may be associated with the in situ generated nickel–iron oxide/hydroxide and iron oxyhydroxide catalysts at the surface, yields current densities of 10 mA/cm2 at an overpotential of 177 mV, 500 mA/cm2 at only 265 mV, and 1,705 mA/cm2 at 300 mV, with high durability in alkaline electrolyte of 1 M KOH even after 10,000 cycles, representing activity enhancement by a factor of 49 in boosting water oxidation at 300 mV relative to the state-of-the-art IrO2 catalyst.


2020 ◽  
Vol 49 (6) ◽  
pp. 1776-1784 ◽  
Author(s):  
Zhengang Guo ◽  
Xiaofeng Wang ◽  
Yangqin Gao ◽  
Zhifeng Liu

The development and utilization of low-cost and efficient electrocatalysts for overall water splitting is of great significance for future energy supplies.


2017 ◽  
Vol 5 (30) ◽  
pp. 15838-15844 ◽  
Author(s):  
Jiahao Yu ◽  
Gongzhen Cheng ◽  
Wei Luo

3D ternary nickel iron sulfide microflowers with a hierarchically porous structure have been directly grown on Ni foam via a convenient two-step method for efficient bifunctional water splitting.


2019 ◽  
Vol 63 (3) ◽  
pp. 356-363 ◽  
Author(s):  
Pengsong Li ◽  
Xiuping Zhao ◽  
Xinxuan Duan ◽  
Yaping Li ◽  
Yun Kuang ◽  
...  

2019 ◽  
Vol 7 (36) ◽  
pp. 20658-20666 ◽  
Author(s):  
Ying Li ◽  
Fumin Li ◽  
Yue Zhao ◽  
Shu-Ni Li ◽  
Jing-Hui Zeng ◽  
...  

Iron doped cobalt phosphide ultrathin nanosheets on nickel foam are used as a bifunctional electrocatalyst for overall water splitting in alkaline electrolyte.


2019 ◽  
Vol 48 (32) ◽  
pp. 12186-12192 ◽  
Author(s):  
Jiang-Yan Xue ◽  
Fei-Long Li ◽  
Zhong-Yin Zhao ◽  
Cong Li ◽  
Chun-Yan Ni ◽  
...  

Hierarchically-assembled Fe–MoS2/Ni3S2/NF demonstrates excellent HER, OER and full water splitting catalytic performances in an alkaline electrolyte.


2018 ◽  
Vol 43 (15) ◽  
pp. 7299-7306 ◽  
Author(s):  
Chi Zhang ◽  
Yunchao Xie ◽  
Heng Deng ◽  
Cheng Zhang ◽  
Jheng-Wun Su ◽  
...  

Author(s):  
Yi Wei ◽  
Cheol-Hwan Shin ◽  
Gyan Barimah Caleb ◽  
Emmanuel Batsa Tetteh ◽  
Gisang Park ◽  
...  

Searching for low-cost and highly active bifunctional electrocatalysts toward hydrogen/oxygen evolution reactions is a grand challenge for water splitting hydrogen production. Herein, we prepare a trimetallic nickel, iron, and molybdenum...


2017 ◽  
Vol 5 (6) ◽  
pp. 2496-2503 ◽  
Author(s):  
Sung Hoon Ahn ◽  
Arumugam Manthiram

Porous ternary Ni–Fe phosphide nanorods directly grown onto commercial nickel foam exhibit high catalytic activities toward both HER and OER in 1 M KOH alkaline solution.


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