| Tuning alpha-Fe2O3 nanotube arrays for the oxygen reduction reaction in alkaline media | |
| Xue, Yudong1,2; Jin, Wei1; Du, Hao1; Wang, Shaona1; Zheng, Shili1; Zhang, Yi1 | |
| 2016 | |
| Source Publication | RSC ADVANCES
 |
| ISSN | 2046-2069 |
| Volume | 6Issue:48Pages:41878-41884 |
| Abstract | The oxygen reduction reaction plays a crucial role in alkaline fuel cells. Herein, an alpha-Fe2O3 nanotube array material was fabricated via a facile two-step electrochemical anodization method and employed as an efficient ORR catalyst in alkaline media. Due to its highly ordered open top architecture, the alpha-Fe2O3 nanotube array electrode exhibits excellent ORR catalytic activity with an onset potential of -0.39 V (vs. Hg/HgO) and high current density of 6.95 mA cm(-2). Results show that the ORR exhibits quasi-reversible diffusion-controlled reaction characteristics and a well-defined four electron pathway. Moreover, as the crystalline structure transforms from alpha-Fe2O3 to Fe3O4 or as the alkaline concentration increases, the ORR activity is disturbed and the electron transfer number decreases. The as-prepared electrodes possess favorable alkaline tolerance as indicated from their chronoamperometric curves and Raman spectra. Accordingly, this novel alpha-Fe2O3 nanotube array material can be employed as efficient and low cost non-noble metal electrodes for electrochemical energy applications. |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1039/c6ra06422a |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | METHANOL FUEL-CELLS ; HIGH-PERFORMANCE ; EFFICIENT ELECTROCATALYSTS ; HEMATITE ALPHA-FE2O3 ; CR(III) OXIDATION ; STAINLESS-STEEL ; KOH SOLUTIONS ; IRON ; CATALYSTS ; GRAPHENE |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| Funding Organization | National Basic Research Program of China (973 Program)(2013CB632601) ; Hundred Talent Program |
| WOS ID | WOS:000375445500027 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/21036 |
| Collection | 湿法冶金清洁生产技术国家工程实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Xue, Yudong,Jin, Wei,Du, Hao,et al. Tuning alpha-Fe2O3 nanotube arrays for the oxygen reduction reaction in alkaline media[J]. RSC ADVANCES,2016,6(48):41878-41884. |
| APA | Xue, Yudong,Jin, Wei,Du, Hao,Wang, Shaona,Zheng, Shili,&Zhang, Yi.(2016).Tuning alpha-Fe2O3 nanotube arrays for the oxygen reduction reaction in alkaline media.RSC ADVANCES,6(48),41878-41884. |
| MLA | Xue, Yudong,et al."Tuning alpha-Fe2O3 nanotube arrays for the oxygen reduction reaction in alkaline media".RSC ADVANCES 6.48(2016):41878-41884. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Tuning alpha-Fe2O3 n（1100KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
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