中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
学科主题: 物理化学
题名: Effect of Surface Manganese Valence of Manganese Oxides on the Activity of the Oxygen Reduction Reaction in Alkaline Media
作者: Tang, Qiwen1, 2;  Jiang, Luhua1;  Liu, Jing1, 2;  Wang, Suli1;  Sun, Gongquan1
通讯作者: 姜鲁华 ;  孙公权
关键词: oxygen reduction reaction ;  manganese oxide ;  surface manganese valence ;  electrode potential ;  alkaline medium
刊名: ACS CATALYSIS
发表日期: 2014-02-01
DOI: 10.1021/cs400938s
卷: 4, 期:2, 页:457-463
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
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.
关键词[WOS]: REACTION ORR ;  CATALYSTS ;  ELECTROCATALYSTS ;  CARBON ;  OXIDATION ;  XPS ;  NANOPARTICLES ;  MECHANISM ;  ELECTRODE ;  CATHODE
语种: 英语
WOS记录号: WOS:000331164000011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144121
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
2014XGRJrxRlfk.PDF(2324KB)期刊论文作者接受稿开放获取View Download

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

Recommended Citation:
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.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Tang, Qiwen]'s Articles
 [Jiang, Luhua]'s Articles
 [Liu, Jing]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Tang, Qiwen]‘s Articles
 [Jiang, Luhua]‘s Articles
 [Liu, Jing]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: 2014XGRJrxRlfk.PDF
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace