Porous nanosheets of Cu3P@N,P co-doped carbon hosted on copper foam as an efficient and ultrastable pH-universal hydrogen evolution electrocatalyst
Porous nanosheets of Cu3P@N,P co-doped carbon hosted on copper foam as an efficient and ultrastable pH-universal hydrogen evolution electrocatalyst
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DOI：
10.1039/d1se00161b
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发表时间：
2021-03-19
影响因子：
5.6
通讯作者：
Shen, Pei Kang
中科院分区：
文献类型：
--
作者：
Jiang, Enjun;Jiang, Jianhong;Shen, Pei Kang
析氢反应（HER）催化剂通常表现出较差的物理稳定性，这限制了其性能和商业用途。在此，我们设计并制造了一种高鲁棒性和高成本效益的催化剂，它在各种条件下都表现出优异的活性和超高的稳定性。这是通过在集流铜泡沫（Cu3P@NPC-CF）上用Cu3P包裹的N，P共掺杂碳壳（类似于4nm）的多孔纳米片来实现的。自制的Cu3P@NPC-CF催化剂在0.5 M H2SO4、1 M PBS和1 M KOH条件下，在10 mA cm（-2）下具有良好的过电位，分别为81.94、192.52和135.45 mV，具有ph通用的HER电催化活性。此外，Cu3P@NPC-CF具有超高的稳定性，在酸性、中性和碱性溶液中，经过90 h的CA测试，电流保留率分别为81.32%、96.06%和95.61%。该自支撑Cu3P@NPC-CF电催化剂在所有pH溶液中均表现出优异的HER活性和超高的稳定性，并且通过简单的方法合成。该Cu3P@NPC-CF催化剂为HER电催化剂的开发提供了新的参考。
Hydrogen Evolution Reaction (HER) catalysts typically display poor physical stability which limits their performance and commercial use. Herein we have designed and fabricated a highly robust and cost-efficient catalyst which displays excellent activity and ultrahigh stability under a variety of conditions. This is accomplished by growing porous nanosheets of a N,P co-doped carbon shell (similar to 4 nm) wrapped in Cu3P on current-collector copper foam (Cu3P@NPC-CF). The prepared self-supported Cu3P@NPC-CF catalyst delivers pH-universal HER electrocatalytic activity with excellent overpotentials of 81.94, 192.52 and 135.45 mV at 10 mA cm(-2) in 0.5 M H2SO4, 1 M PBS and 1 M KOH, respectively. Moreover, Cu3P@NPC-CF possesses ultrahigh stability with current retentions of 81.32%, 96.06% and 95.61% after 90 h of chronoamperometry (CA) tests in acidic, neutral and alkaline solutions, respectively. The self-supported Cu3P@NPC-CF electrocatalyst exhibits excellent HER activity and ultrahigh stability in all pH solutions yet was synthesized via a facile approach. This Cu3P@NPC-CF catalyst provides a new reference for the development of HER electrocatalysts.