Atomically dispersed Lewis acid sites boost 2-electron oxygen reduction activity of carbon-based catalysts
文献类型：期刊论文
| 作者 | Yang, QH; Xu, WW; Gong, S; Zheng, GK; Tian, ZQ; Wen, YJ; Peng, LM; Zhang, LJ; Lu, ZY; Chen, L |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2020 |
| 卷号 | 11期号:1页码:- |
| ISSN号 | 2041-1723 |
| 关键词 | NITROGEN-DOPED CARBON HYDROGEN-PEROXIDE METAL CATALYSTS H2O2 ALUMINUM ELECTROCATALYSTS ELECTROSYNTHESIS |
| DOI | 10.1038/s41467-020-19309-4 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Elucidating the structure-property relationship is crucial for the design of advanced electrocatalysts towards the production of hydrogen peroxide (H2O2). In this work, we theoretically and experimentally discovered that atomically dispersed Lewis acid sites (octahedral M-O species, M=aluminum (Al), gallium (Ga)) regulate the electronic structure of adjacent carbon catalyst sites. Density functional theory calculation predicts that the octahedral M-O with strong Lewis acidity regulates the electronic distribution of the adjacent carbon site and thus optimizes the adsorption and desorption strength of reaction intermediate (*OOH). Experimentally, the optimal catalyst (oxygen-rich carbon with atomically dispersed Al, denoted as O-C(Al)) with the strongest Lewis acidity exhibited excellent onset potential (0.822 and 0.526V versus reversible hydrogen electrode at 0.1mAcm(-2) H2O2 current in alkaline and neutral media, respectively) and high H2O2 selectivity over a wide voltage range. This study provides a highly efficient and low-cost electrocatalyst for electrochemical H2O2 production. H2O2 production via oxygen reduction offers a renewable approach to obtain an often-used oxidant. Here, authors show the incorporation of Lewis acid sites into carbon-based materials to improve H2O2 electrosynthesis. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32716]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Zhejiang Univ, Coll Chem & Biol Engn, Minist Educ, Key Lab Biomass Chem Engn, Hangzhou 310027, Zhejiang, Peoples R China 2.Chinese Acad Sci, Fujian Inst Innovat, Fuzhou 350002, Fujian, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China 4.Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China 5.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, QH,Xu, WW,Gong, S,et al. Atomically dispersed Lewis acid sites boost 2-electron oxygen reduction activity of carbon-based catalysts[J]. NATURE COMMUNICATIONS,2020,11(1):-. |
| APA | Yang, QH.,Xu, WW.,Gong, S.,Zheng, GK.,Tian, ZQ.,...&Chen, L.(2020).Atomically dispersed Lewis acid sites boost 2-electron oxygen reduction activity of carbon-based catalysts.NATURE COMMUNICATIONS,11(1),-. |
| MLA | Yang, QH,et al."Atomically dispersed Lewis acid sites boost 2-electron oxygen reduction activity of carbon-based catalysts".NATURE COMMUNICATIONS 11.1(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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