Wang, Qichang;
Yu, Ran;
Shen, Dekui;
Liu, Qian;
Hong Luo, Kai;
Wu, Chunfei;
Gu, Sai;
(2023)
Performance of intrinsic heteroatoms in cobalt phosphide loaded ginkgo leave-based carbon material on promoting the electrocatalytic activity during hydrogen evolution reaction and oxygen evolution reaction.
Fuel
, 333
, Article 126368. 10.1016/j.fuel.2022.126368.
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Abstract
Nitrogen (N) and sulfur (S) in ginkgo leaves are converted to carbon lattice heteroatoms, making them a matrix. Herein, cobalt phosphide (CoP) is loaded on the N/S/phosphorus (P) co-doped carbon matrix (CoP@NSPC) via the carbothermic reduction method using the ginkgo leave-based carbon as the precursor. The N/P co-doped carbon matrix loaded with CoP (CoP@NPC) are also prepared using glucose-based carbon as the support. Effects of intrinsic heteroatoms from ginkgo leaves are revealed through X-ray photoelectron spectroscopy (XPS) and ultraviolet photo-electron spectroscopy (UPS) compared with CoP@NPC. The N/S heteroatoms accelerate the electron transfer and adjust the d-band center of CoP@NSPC, thus causing a faster electrocatalytic process. The as-obtained CoP@NSPC exhibits excellent activity toward hydrogen evolution reaction (HER, 160 mV @ 10 mA cm−2) and oxygen evolution reaction (OER, 198 mV @ 10 mA cm−2). The assembly feasibility and catalytic performance are further verified in overall water splitting and exhibits high efficiency and long durability of CoP@NSPC.
| Type: | Article |
|---|---|
| Title: | Performance of intrinsic heteroatoms in cobalt phosphide loaded ginkgo leave-based carbon material on promoting the electrocatalytic activity during hydrogen evolution reaction and oxygen evolution reaction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.fuel.2022.126368 |
| Publisher version: | https://doi.org/10.1016/j.fuel.2022.126368 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Ginkgo leaves, Nitrogen/sulfur/phosphorus co-doped carbon, Cobalt phosphide, D-band, Water splitting |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10158913 |
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