过电位
塔菲尔方程
电催化剂
分解水
材料科学
兴奋剂
纳米技术
化学工程
化学
催化作用
光电子学
电化学
电极
物理化学
生物化学
光催化
工程类
作者
Dasu Ram Paudel,Uday Narayan Pan,Thangjam Ibomcha Singh,Chandan Chandru Gudal,Nam Hoon Kim,Joong Hee Lee
标识
DOI:10.1016/j.apcatb.2021.119897
摘要
1T-WS2 is known for its higher hydrogen evolution reaction (HER) performance than 2H-WS2. However, the lack of thermodynamic stability and absence of large-scale synthesis procedures kept 1T-WS2 significantly ignored to date. In this report, for the first time, we have fabricated 1T-WS2 in 3D-dendritic nanostructures over flexible carbon cloth (CC) following doping and intercalation of Fe and P (1T-Fe/P-WS2@CC). The HER and OER activities of 1T-Fe/P-WS2@CC outperform state-of-the-art electrocatalysts, demonstrating a low overpotential (ηHER =116 mV, ηOER =267 mV @ 10 mA cm−2), small Tafel slope (HER =65 mV dec-1, OER =70.1 mV dec-1), and significant durability. The 1T-Fe/P-WS2@CC (+,−) alkaline elctrolyzer also shows exceptional high performance, required only 1.53 V cell voltage at the current density of 10 mA cm−2. Overall, this work opens up a new dimension for simple and scalable fabrication of highly efficient and low-cost electrocatalyst based on WS2.
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