Amorphous nickel/cobalt tungsten sulfide electrocatalysts for high-efficiency hydrogen evolution reaction
Amorphous nickel/cobalt tungsten sulfide electrocatalysts for high-efficiency hydrogen evolution reaction
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用于高效析氢反应的非晶态镍/钴硫化钨电催化剂
DOI:
10.1016/j.apsusc.2015.03.018
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发表时间:
2015-06
影响因子:
6.7
通讯作者:
Paul K. Chu
中科院分区:
文献类型:
--
作者:
Lun Yang;Xinglong Wu;Xiaoshu Zhu;Chengyu He;Ming Meng;Zhixing Gan;Paul K. Chu
The hydrogen evolution reaction (HER), an appealing solution for future energy supply, requires efficient and inexpensive electrocatalysts with abundant active surface sites. Although crystalline MoS2and WS2are promising candidates, their activity is dominated by edge sites. Amorphous tungsten sulfide prepared so far lacks the required active sites and its application has thus been hampered. In this work, nickel and cobalt incorporated amorphous tungsten sulfide synthesized by a thermolytic process is demonstrated to enhance the HER efficiency dramatically. The amorphous nickel tungsten sulfide (amorphous NiWS) annealed at 210 °C delivers the best HER performance in this system boasting a Tafel slope of 55 mV per decade and current density of 8.6 mA cm−2at 250 mV overpotential in a sustained test for 24 h. The introduction of Ni or Co into the catalyst and subsequent thermal treatment alters the porous structure and chemical bonding states thereby increasing the density of active sites on the surface.
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影响因子:
--
作者:
Yong Zhao;K. Kamiya;K. Hashimoto;Shuji Nakanishi
通讯作者:
Yong Zhao;K. Kamiya;K. Hashimoto;Shuji Nakanishi
影响因子:
4.9
作者:
Xiaojia Zheng;Jiahao Guo;Yantao Shi;F. Xiong;Wen-Hau Zhang;T. Ma;Can Li
通讯作者:
Xiaojia Zheng;Jiahao Guo;Yantao Shi;F. Xiong;Wen-Hau Zhang;T. Ma;Can Li
影响因子:
7.2
作者:
Chen, Tzu-Yin;Chang, Yung-Huang;Li, Lain-Jong
通讯作者:
Li, Lain-Jong
影响因子:
15
作者:
Popczun, Eric J.;McKone, James R.;Schaak, Raymond E.
通讯作者:
Schaak, Raymond E.
影响因子:
2.6
作者:
W. Eltzner;M. Breysse;M. Lacroix;M. Vrinat
通讯作者:
W. Eltzner;M. Breysse;M. Lacroix;M. Vrinat