Bimetallic Nickel-Substituted Cobalt-Borate Nanowire Array: An Earth-Abundant Water Oxidation Electrocatalyst with Superior Activity and Durability at Near Neutral pH
文献类型：期刊论文
| 作者 | Ma, Min; Qu, Fengli; Ji, Xuqiang; Liu, Danni; Hao, Shuai; Du, Gu; Asiri, Abdullah M.; Yao, Yadong; Chen, Liang; Sun, Xuping |
| 刊名 | SMALL
 |
| 出版日期 | 2017 |
| 卷号 | 13期号:25页码:UNSP 1700394 |
| ISSN号 | 1613-6810 |
| 英文摘要 | There is an urgent demand to develop earth-abundant electrocatalysts for efficient and durable water oxidation under mild conditions. A nickel-substituted cobalt-borate nanowire array is developed on carbon cloth (Ni-Co-Bi/CC) via oxidative polarization of NiCo2S4 nanoarray in potassium borate (K-Bi). As a bimetallic electrocatalyst for water oxidation, such Ni-Co-Bi/CC is superior in catalytic activity and durability in 0.1 M K-Bi (pH: 9.2), with a turnover frequency of 0.33 mol O-2 s(-1) at the overpotential of 500 mV and nearly 100% Faradaic efficiency. To drive a geometrical catalytic current density of 10 mA cm(-2), it only needs overpotential of 388 mV, 34 mV less than that for Co-Bi/CC, outperforming reported non-noble-metal catalysts operating under benign conditions. Notably, its activity is maintained over 80 000 s. Density functional theory calculations suggest that the O* to OOH* conversion is the rate-determining step and Ni substitution decreases the free energy on Co-Bi from 2.092 to 1.986 eV. |
| 公开日期 | 2017-12-25 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/13738]  |
| 专题 | 2017专题 |
| 推荐引用方式 GB/T 7714 | Ma, Min,Qu, Fengli,Ji, Xuqiang,et al. Bimetallic Nickel-Substituted Cobalt-Borate Nanowire Array: An Earth-Abundant Water Oxidation Electrocatalyst with Superior Activity and Durability at Near Neutral pH[J]. SMALL,2017,13(25):UNSP 1700394. |
| APA | Ma, Min.,Qu, Fengli.,Ji, Xuqiang.,Liu, Danni.,Hao, Shuai.,...&Sun, Xuping.(2017).Bimetallic Nickel-Substituted Cobalt-Borate Nanowire Array: An Earth-Abundant Water Oxidation Electrocatalyst with Superior Activity and Durability at Near Neutral pH.SMALL,13(25),UNSP 1700394. |
| MLA | Ma, Min,et al."Bimetallic Nickel-Substituted Cobalt-Borate Nanowire Array: An Earth-Abundant Water Oxidation Electrocatalyst with Superior Activity and Durability at Near Neutral pH".SMALL 13.25(2017):UNSP 1700394. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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