Cobalt layered double hydroxide nanosheets synthesized in water-methanol solution as oxygen evolution electrocatalysts
文献类型：期刊论文
| 作者 | Xu, Xiao1; Zhong, Zhou1,2; Yan, Xiaomei1; Kang, Longtian1; Yao, Jiannian3 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018-04-14 |
| 卷号 | 6期号:14页码:5999-6006 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c7ta10351d |
| 英文摘要 | Cobalt-based layered double hydroxides (Co-based LDHs) are cost-efficient electrocatalysts toward the oxygen evolution reaction (OER) associated with the conversion of clean and renewable energy. Herein we report a facile method for the in situ synthesis of monometallic Co LDH ultrathin nanosheets (UTNSs) through a one-step reaction between cobalt(II) nitrate and 2-methylimidazole (2MI) in water-methanol solution without the pre-synthesis of zeolitic imidazolate framework-67 (ZIF-67). The as-prepared Co LDH UTNSs possess atomic thickness, abundant oxygen vacancies and three-dimensional (3D) porous features. The best sample exhibits an outstanding OER performance on a glassy carbon electrode (GCE) with an overpotential (eta) of 340 mV at 10 mA cm(-2), a Tafel slope of 56 mV dec(-1) and a turnover frequency (TOF) of 0.801 s (1) at eta = 350 mV in 1 M KOH. A two-electrode cell with the Co LDH UTNSs as the anode catalyst and commercial Pt/C as the cathode catalyst achieves a current density of 10 mA cm-2 at the applied voltage of 1.625 V during the long-term electrolysis test. This work demonstrates a novel strategy based on water-methanol solution which is promising for the design and synthesis of ultrathin LDHs as highly active and stable catalysts applied in clean energy production. |
| 语种 | 英语 |
| WOS记录号 | WOS:000431506600060 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43219]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Kang, Longtian; Yao, Jiannian |
| 作者单位 | 1.Chinese Acad Sci, Fujian Inst Res Struct Matter, Fujian Prov Key Lab Nanomat, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Fujian, Peoples R China 2.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Xiao,Zhong, Zhou,Yan, Xiaomei,et al. Cobalt layered double hydroxide nanosheets synthesized in water-methanol solution as oxygen evolution electrocatalysts[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(14):5999-6006. |
| APA | Xu, Xiao,Zhong, Zhou,Yan, Xiaomei,Kang, Longtian,&Yao, Jiannian.(2018).Cobalt layered double hydroxide nanosheets synthesized in water-methanol solution as oxygen evolution electrocatalysts.JOURNAL OF MATERIALS CHEMISTRY A,6(14),5999-6006. |
| MLA | Xu, Xiao,et al."Cobalt layered double hydroxide nanosheets synthesized in water-methanol solution as oxygen evolution electrocatalysts".JOURNAL OF MATERIALS CHEMISTRY A 6.14(2018):5999-6006. |
入库方式： OAI收割
来源：化学研究所
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