Cobalt phosphide nanoparticles film growth on carbon cloth: A high-performance cathode for electrochemical hydrogen evolution
Cobalt phosphide nanoparticles film growth on carbon cloth: A high-performance cathode for electrochemical hydrogen evolution
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DOI：
10.1016/j.ijhydene.2014.08.099
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发表时间：
2014-10
影响因子：
7.2
通讯作者：
Qun Li;Zhicai Xing;Abdullah M. Asiri;P. Jiang;Xuping Sun
中科院分区：
文献类型：
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作者：
Qun Li;Zhicai Xing;Abdullah M. Asiri;P. Jiang;Xuping Sun
通过对相应的CoNPs/CC前驱体进行低温磷化处理，在碳布(CoNPS/CC)上制备了磷化钴纳米颗粒薄膜。当直接用作强酸性溶液中电化学析氢的阴极时，CoP NPs/CC电极表现出高性能，起始过电位为33 mV，塔菲尔斜率为70 mV/dec−1，法拉第效率接近100%。该催化剂的催化活性至少保持30h，仅需48和190mV的过电位即可分别获得10和100mA/cm−2的电流密度。
In this communication, cobalt phosphide nanoparticles film was developed on carbon cloth (CoP NPs/CC) through low-temperature phosphidation of its corresponding Co NPs/CC precursor. When directly used as a cathode for electrochemical hydrogen evolution in strongly acidic solutions, the CoP NPs/CC electrode exhibits high performance with a low onset overpotential of 33 mV, a Tafel slope of 70 mV dec−1and a Faradaic efficiency of nearly 100%. This catalyst maintain its catalytic activity for at least 30 h and only needs overpotentials of 48 and 190 mV to attain current densities of 10 and 100 mA cm−2, respectively.