氟
碳纳米管
氯
对偶(语法数字)
兴奋剂
碳纤维
化学
材料科学
纳米技术
化学工程
无机化学
有机化学
光电子学
艺术
文学类
复合数
工程类
复合材料
作者
Xiaodong Shao,Ashakiran Maibam,Fengliang Cao,Haiyan Jin,Shiqing Huang,Mengfang Liang,Min Gyu Kim,Kim My Tran,Amol R. Jadhav,Heon Jung,Ravichandar Babarao,Hyoyoung Lee
标识
DOI:10.1002/ange.202406273
摘要
The chlorine evolution reaction (CER) is a crucial anode reaction in the chlor‐alkali industrial process. Precious metal‐based dimensionally stable anodes (DSAs) are commonly used as catalysts for CER but are constrained by their high cost and low selectivity. Herein, a Pt dual singe‐atom catalyst (DSAC) dispersed on fluorine‐doped carbon nanotubes (F‐CNTs) is designed for an efficient and robust CER process. The prepared Pt DSAC demonstrates excellent CER activity with a low overpotential of 21 mV to achieve a current density of 10 mA cm−2 and a remarkable mass activity of 3802.6 A gpt−1 at an overpotential around 30 mV, outperforming those of commercial DSA and Pt single‐atom catalysts. The excellent CER performance of Pt DSAC is attributed to the high atomic utilization and improved intrinsic activity. Notably, introducing fluorine atoms on CNTs increases the oxidation and chlorination resistance of Pt DSAC, and reduces the demetalization ratio of Pt atoms, resulting in excellent long‐term CER stability. Theoretical calculations reveal that several Pt DSAC configurations with optimized first‐shell ligands and interatomic distance display lower energy barriers for Cl intermediates generation and weaker ionic Pt‐Cl bond interaction, which are favorable for the CER process.
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