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Enhanced electrocatalytic activity of carbon cloth by synergetic effect of plasma and acid treatment
Plasma Science and Technology ( IF 1.7 ) Pub Date : 2021-01-23 , DOI: 10.1088/2058-6272/abd8b4
Tingting MEI 1, 2 , Ming GAO 1, 2 , Danni LIU 1 , Yu WANG 1 , Yifan HUANG 1, 2
Affiliation  

Commercial carbon cloth (CC) is an ideal electrocatalysis material to produce oxygen evolution reaction (OER) due to its high conductive and 3D flexible structure, but the lacked active sites limit its application. For improving its OER performance, the present study proposed an effective method combining plasma and acid treatment to introduce oxygen-containing functional groups and produce more active sites on its surface. Compared to the pristine CC, the plasma and acid treated carbon cloth (PN-CC) delivers a reduced overpotential by 34.6% to achieve current density of 10 mA cm−2. The Tafel slope declines from 97.5 mV dec–1 (pristine CC) to 55.9 mV dec–1 (PN-CC), showing an increased OER kinetic. Additionally, PN-CC electrocatalyst shows outstanding stability after 5000 cycles or 25 000 s. The combination of plasma and acid treatment shows a significant potential in surface modification for electrocatalysts.



中文翻译:

通过等离子体和酸处理的协同作用增强碳布的电催化活性

商用碳布(CC)由于其高导电性和 3D 柔性结构是产生析氧反应(OER)的理想电催化材料,但缺乏活性位点限制了其应用。为了提高其OER性能,本研究提出了一种结合等离子体和酸处理的有效方法,以引入含氧官能团并在其表面产生更多的活性位点。与原始 CC 相比,经过等离子体和酸处理的碳布 (PN-CC) 的过电位降低了 34.6%,以实现 10 mA cm -2 的电流密度。Tafel 斜率从 97.5 mV dec –1(原始 CC)下降到 55.9 mV dec –1(PN-CC),显示增加的 OER 动力学。此外,PN-CC 电催化剂在 5000 次循环或 25000 秒后表现出出色的稳定性。等离子体和酸处理的结合在电催化剂的表面改性方面显示出巨大的潜力。

更新日期:2021-01-23
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