https://scholars.lib.ntu.edu.tw/handle/123456789/630802
標題: | Metal-Organic Framework-Derived 2D NiCoP Nanoflakes from Layered Double Hydroxide Nanosheets for Efficient Electrocatalytic Water Splitting at High Current Densities | 作者: | Xu, Zichen Yeh, Chia Lin Chen, Jeng Lung Lin, Jiann T. KUO-CHUAN HO Lin, Ryan Yeh Yung |
關鍵字: | high current densities | layered double hydroxides | metal-organic frameworks | nanoflakes | overall water splitting | 公開日期: | 5-九月-2022 | 出版社: | AMER CHEMICAL SOC | 卷: | 10 | 期: | 35 | 起(迄)頁: | 11577 | 來源出版物: | ACS Sustainable Chemistry and Engineering | 摘要: | Two-dimensional (2D) metal-organic framework (MOF)-derived NiCoP nanoflakes, denoted as NiCo(nf)-P, are prepared via in situ growth of MOF using NiCo layered double hydroxide (LDH) as a sacrificial template, followed by phosphorization. The nanoparticle-decorated 2D nanoflake morphology and the intrinsic porosity inherited from the MOF precursor render NiCo(nf)-P a highly efficient bifunctional electrocatalyst toward hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water splitting. In 1.0 M KOH electrolyte solution, NiCo(nf)-P shows low overpotentials of 199/283/317 and 315/378/416 mV at 100/500/1000 mA cm-2 for HER and OER, respectively. For overall water splitting, it only needs low cell voltages of 1.74/1.86/1.94 V to reach 100/500/1000 mA cm-2, with outstanding long-term stability over 30 h. The excellent catalytic performance of NiCo(nf)-P outperforms most of the NiCoP-based electrocatalysts reported so far, indicating its great potential for the overall water splitting application. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/630802 | ISSN: | 2168-0485 | DOI: | 10.1021/acssuschemeng.2c03250 |
顯示於: | 化學工程學系 |
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