Unraveling the efficiency of heteroatom-doped graphene quantum dots incorporated MOF-derived bimetallic layered double hydroxide towards oxygen evolution reaction

被引：26

作者：

Rinawati, Mia ^{[1
]}

Wang, Yu-Xuan ^{[1
]}

Huang, Wei-Hsiang ^{[2
]}

Wu, Yu-Ting ^{[1
]}

Cheng, Yao-Sheng ^{[1
]}

Kurniawan, Darwin ^{[1
]}

Haw, Shu-Chih ^{[3
]}

Chiang, Wei-Hung ^{[1
]}

Su, Wei-Nien ^{[2
]}

Yeh, Min-Hsin ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 10607, Taiwan

[2] Natl Taiwan Univ Sci & Technol, Grad Inst Appl Sci & Technol, Taipei 10607, Taiwan

[3] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

来源：

CARBON | 2022年 / 200卷

关键词：

Graphene quantum dots; Oxygen evolution reaction; Metal -organic framework; Layered double hydroxide; Heteroatom doping; METAL-FREE ELECTROCATALYSTS; WATER; OXIDE; REDUCTION; CATALYST; NANOTUBES; ELECTRODE; BORON;

D O I：

10.1016/j.carbon.2022.08.067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Addressing energy and environmental issues, developing highly efficient, durable, and earth-abundant, electrocatalysts are crucial in oxygen evolution reaction (OER) for energy conversion and storage. Extensive research about the metal-organic framework (MOF) derived layered double hydroxides (LDH) and carbon-based electrocatalysts have been devoted, despite the exceptional performance in OER, yet the limited exposed active sites remain a challenge. Therefore, we reported a novel heteroatom-doped graphene quantum dots (GQDs) incorporated into MOF-derived NiFe-LDH. Taking advantage of abundant active and edge sites of GQDs and modifying the surface chemistry by chemical doping with foreign atoms, the designed heteroatom-doped GQDs/MOFderived LDH exhibited superior catalytic performance low overpotential of 251 mV at a current density of 100 mA cm-2 in alkaline media. Our result confirmed the synergistic effect between the doped heteroatom and the uttermost exposure of heteroatom-doped GQDs/MOF-derived LDH's active sites on its surface, providing swift reactant's transportation and adequate contact for improving the OER performance.

引用

页码：437 / 447

页数：11

共 63 条

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