Tungsten phosphide nanorod arrays directly grown on carbon cloth: a highly efficient and stable hydrogen evolution cathode at all pH values.
Tungsten phosphide nanorod arrays directly grown on carbon cloth: a highly efficient and stable hydrogen evolution cathode at all pH values.
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DOI：
10.1021/am5060178
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发表时间：
2014-12
影响因子：
9.5
通讯作者：
Zonghua Pu;Qian Liu;Abdullah M. Asiri;Xuping Sun
中科院分区：
文献类型：
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作者：
Zonghua Pu;Qian Liu;Abdullah M. Asiri;Xuping Sun
我们报道了通过两步策略在碳布上制备磷化钨纳米棒阵列（WP NAs/CC）：首先在CC上水热生长WO 3纳米棒阵列（WO 3 NAs/CC），然后通过磷化将WO 3 NAs/CC前体化学转化为WP NAs/CC。WP NAs/CC电极作为一种新型的酸性介质中三维一体化析氢阴极，具有优异的催化活性和耐久性。该催化剂的过电位分别为130和230 mV，电流密度分别为10和100 mA·cm（-2），催化活性可保持至少70 h。值得注意的是，这种电极在中性和碱性溶液中也有效地工作。
We report the development of tungsten phosphide nanorod arrays on carbon cloth (WP NAs/CC) through a two-step strategy: hydrothermally growing WO3 nanorod arrays on CC (WO3 NAs/CC) first, followed by phosphidation to chemically convert the WO3 NAs/CC precursor into WP NAs/CC. As a novel integrated 3D hydrogen evolution cathode in acidic media, the WP NAs/CC electrode exhibits excellent catalytic activity and durability. It needs overpotentials of 130 and 230 mV to afford current densities of 10 and 100 mA cm(-2), respectively, and its catalytic activity is maintained for at least 70 h. Remarkably, this electrode also works efficiently in both neutral and alkaline solutions.