Effect of Surface Manganese Valence of Manganese Oxides on the Activity of the Oxygen Reduction Reaction in Alkaline Media
文献类型：期刊论文
| 作者 | Tang, Qiwen1,2; Jiang, Luhua1; Liu, Jing1,2; Wang, Suli1; Sun, Gongquan1 |
| 刊名 | acs catalysis
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 4期号:2页码:457-463 |
| 关键词 | oxygen reduction reaction manganese oxide surface manganese valence electrode potential alkaline medium |
| 通讯作者 | 姜鲁华 ; 孙公权 |
| 英文摘要 | in this article, manganese oxide nanorods with different crystalline structures, i.e., beta-mno2, alpha-mn2o3, and a composite of mn3o4 and alpha-mn2o3, were successfully synthesized via controlling the heat-treatment procedure starting from a manganese oxide composite, containing gamma-mnooh and mn(oh)(4). the oxygen reduction reaction (orr) polarization curves measured by a rotating disk electrode (rde) setup show that those mnox catalysts with higher mn valent states, i.e., gamma-mnooh and mn(oh)(4) composite and beta-mno2, exhibit better catalytic activity toward the orr than those with lower mn valences. furthermore, we testify that the surface mn valence of mnox could be tuned by applying proper potential cycling to the mnox electrode and thus leads to different activities, i.e., the mnox surface is rich in mn(ii) after treatment at relatively negative potentials, resulting in degradation in orr activity, while it is rich in mn(iv) after treatment at positive potentials, resulting in improvement in activity. compared with the heat-treatment approach, the electrochemical approach is more facile and energy-saving to tune the surface metal valence and thus orr activity. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | reaction orr ; catalysts ; electrocatalysts ; carbon ; oxidation ; xps ; nanoparticles ; mechanism ; electrode ; cathode |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000331164000011 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/144121]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Qiwen,Jiang, Luhua,Liu, Jing,et al. Effect of Surface Manganese Valence of Manganese Oxides on the Activity of the Oxygen Reduction Reaction in Alkaline Media[J]. acs catalysis,2014,4(2):457-463. |
| APA | Tang, Qiwen,Jiang, Luhua,Liu, Jing,Wang, Suli,&Sun, Gongquan.(2014).Effect of Surface Manganese Valence of Manganese Oxides on the Activity of the Oxygen Reduction Reaction in Alkaline Media.acs catalysis,4(2),457-463. |
| MLA | Tang, Qiwen,et al."Effect of Surface Manganese Valence of Manganese Oxides on the Activity of the Oxygen Reduction Reaction in Alkaline Media".acs catalysis 4.2(2014):457-463. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。