Single Crystal (Mn,Co)(3)O-4 Octahedra for Highly Efficient Oxygen Reduction Reactions
文献类型：期刊论文
| 作者 | Liu, Huanying1; Zhu, Xuefeng1; Li, Mingrun1; Tang, Qiwen2; Sun, Gongquan2; Yang, Weishen1 |
| 刊名 | electrochimica acta
 |
| 出版日期 | 2014-10-20 |
| 卷号 | 144页码:31-41 |
| 关键词 | ORR selectivity facet-determined catalysis single-crystal octahedron (Mn spinel oxides Co)(3)O-4 |
| 英文摘要 | single-crystal (mn,co)(3)o-4 octahedra were synthesized through a novel precipitation-aging method. well-defined single-crystal octahedra can be formed by carefully controlling the precipitation-dissolution equilibrium, oxygen concentration, and solution temperature during synthesis to match the rates of spinel nucleation and octahedra growth. the single-crystal (mn,co)(3)o-4 octahedra expose {111} and {011} facets of cubic and tetragonal phases, respectively, depending on the mn/co ratio. however, only single-crystal octahedra of mn2coo4 and mn2.5co0.5o4 with exposed {011} facets show the highest selectivity towards 4e(-) and 2e(-) oxygen reduction reactions (orr) in alkaline solution, respectively. furthermore, the single-crystal mn2coo4 octahedra with exposed {011} facets shows similar to 30 times higher area specific activity for orr than that of nanoparticles with random/mixed facets. the high electrocatalytic activity and selectivity towards orr are correlated with the octahedral shape, the exposed facet, and the ratio of cations on the exposed facets (especially the octahedrally coordinated mn-4 cations). this facet dependent catalytic performance provides a new route for obtaining highly selective and active orr electrocatalysts. (c) 2014 elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | electrochemistry |
| 研究领域[WOS] | electrochemistry |
| 关键词[WOS] | nitrogen-doped carbon ; 0-less-than-or-equal-to-x-less-than-or-equal-to-1 spinel films ; ray photoelectron-spectroscopy ; co-o nanocrystals ; manganese oxides ; spray-pyrolysis ; alkaline media ; fuel-cells ; electrocatalytic activity ; hydrogen-peroxide |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000343951100005 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145613]  |
| 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, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Huanying,Zhu, Xuefeng,Li, Mingrun,et al. Single Crystal (Mn,Co)(3)O-4 Octahedra for Highly Efficient Oxygen Reduction Reactions[J]. electrochimica acta,2014,144:31-41. |
| APA | Liu, Huanying,Zhu, Xuefeng,Li, Mingrun,Tang, Qiwen,Sun, Gongquan,&Yang, Weishen.(2014).Single Crystal (Mn,Co)(3)O-4 Octahedra for Highly Efficient Oxygen Reduction Reactions.electrochimica acta,144,31-41. |
| MLA | Liu, Huanying,et al."Single Crystal (Mn,Co)(3)O-4 Octahedra for Highly Efficient Oxygen Reduction Reactions".electrochimica acta 144(2014):31-41. |
入库方式： OAI收割
来源：大连化学物理研究所
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