Boosting electrocatalytic oxygen evolution using ultrathin carbon protected iron-cobalt carbonate hydroxide nanoneedle arrays
文献类型：期刊论文
| 作者 | Dai, MM; Fan, HY; Xu, GG; Wang, M; Zhang, S; Lu, LH; Zhang, YG |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2020-02-29 |
| ISSN号 | 0378-7753 |
| DOI | 10.1016/j.jpowsour.2019.227639 |
| 文献子类 | Article |
| 英文摘要 | Nonprecious metal hydroxides are promising candidates for oxygen evolution reaction (OER) catalysts, Enhancing charge transfer efficiency and optimizing their surface states are crucial to further improve their OER activity for practical applications. Herein, using a facile hydrothermal reaction and low-temperature calcination process, we synthesize ultrathin carbon coated, nitrogen and iron modified cobalt carbonate hydroxide needle arrays on carbon cloth (C@NFeCoCH/CC). The synergistic effect of Fe and N modification induces high OER activity of C@NFeCoCH/CC and a conversion of rate determining step for OER, which mainly benefits from highly active Co/Fe-N-C species in situ formed on the interface of carbon layer and needles. Thin carbon layer, N and Fe modification, along with continuous conductive carbon cloth guarantee fast and stable charge transfer from bulk of free-standing porous catalyst film to its interface. It is found that the optimized C@NFe1Co1CH/CC exhibits a low overpotential of 235 mV at 10 mA cm(-2), a mass activity of 681.4 A g(-1) and a superior stability over 30 hat 10 mA cm(-2). Moreover, experiments demonstrate that the Co/Fe sites possess higher OER activity than the N-C sites, while the Co/Fe-N (-C) sites can obviously outperform the Co/Fe-O sites. |
| WOS关键词 | EFFICIENT WATER OXIDATION ; NITROGEN-DOPED GRAPHENE ; HIGHLY EFFICIENT ; BIFUNCTIONAL ELECTROCATALYSTS ; REDUCTION ; STABILITY ; LAYER ; (OXY)HYDROXIDE ; ALKALINE ; CATALYST |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28279]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Dai, MM,Fan, HY,Xu, GG,et al. Boosting electrocatalytic oxygen evolution using ultrathin carbon protected iron-cobalt carbonate hydroxide nanoneedle arrays[J]. JOURNAL OF POWER SOURCES,2020. |
| APA | Dai, MM.,Fan, HY.,Xu, GG.,Wang, M.,Zhang, S.,...&Zhang, YG.(2020).Boosting electrocatalytic oxygen evolution using ultrathin carbon protected iron-cobalt carbonate hydroxide nanoneedle arrays.JOURNAL OF POWER SOURCES. |
| MLA | Dai, MM,et al."Boosting electrocatalytic oxygen evolution using ultrathin carbon protected iron-cobalt carbonate hydroxide nanoneedle arrays".JOURNAL OF POWER SOURCES (2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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