Efficient anodic chemical conversion to boost hydrogen evolution with low energy consumption over cobalt-doped nickel sulfide electrocatalyst
文献类型：期刊论文
| 作者 | Li, Yufei; Duan, Yuanxiao; Zhang, Kai ; Yu, Wenzheng
|
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 433期号:0页码:134472 |
| 关键词 | ADSORPTION NI |
| ISSN号 | 1385-8947 |
| 英文摘要 | Electrocatalytic oxidation of small molecules to replace sluggish water oxidation presents a promising strategy for clean hydrogen production with low energy consumption. Herein, we reported a reliable and universal method to fabricate the leaf-like Co-doped Ni3S2 architecture anchored on Ni mesh. The optimized Co-doped Ni3S2 electrocatalyst exhibits superior electrocatalytic activity toward the alkaline hydrogen evolution reaction (HER) and chemical oxidation as well as excellent durability. Specifically, a significantly reduced cell voltage of 0.80 V is attained at 50 mA cm-2 in sulfion-containing electrolytes, which is about 0.94 and 1.20 V lower than that of urea electrolysis and water splitting, respectively. In situ Raman spectroscopy and electrochemical characterization results imply that the desired oxidation state of the NiIII formed on the surface with shortened oxidation pathway accounts for the increased urea oxidation, whereas a direct electron transfer to surface active sites is responsible for superior sulfion oxidation. In situ spectroscopic evidences further unravel that the sulfion (S2-) were stepwisely oxidized to short-chain polysulfides including S(2)(2-)and S(4)(2-)and then to elemental sulfur (S-8). This work highlights that the integrated overall reaction holds the great promise for saving energy H-2 generation and environmentally friendly recovery of sulfur with enhanced electron utilization efficiency. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47691]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Yu, Wenzheng |
| 作者单位 | 1.Northeast Forestry Univ, Colleges Forestry, 26 Hexing Rd, Harbin 150040, Peoples R China 2.Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yufei,Duan, Yuanxiao,Zhang, Kai,et al. Efficient anodic chemical conversion to boost hydrogen evolution with low energy consumption over cobalt-doped nickel sulfide electrocatalyst[J]. CHEMICAL ENGINEERING JOURNAL,2022,433(0):134472. |
| APA | Li, Yufei,Duan, Yuanxiao,Zhang, Kai,&Yu, Wenzheng.(2022).Efficient anodic chemical conversion to boost hydrogen evolution with low energy consumption over cobalt-doped nickel sulfide electrocatalyst.CHEMICAL ENGINEERING JOURNAL,433(0),134472. |
| MLA | Li, Yufei,et al."Efficient anodic chemical conversion to boost hydrogen evolution with low energy consumption over cobalt-doped nickel sulfide electrocatalyst".CHEMICAL ENGINEERING JOURNAL 433.0(2022):134472. |
入库方式： OAI收割
来源：生态环境研究中心
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