N-P covalent bond regulation of mesoporous carbon-based catalyst for lowered oxygen reduction overpotential and enhanced zinc-air battery performance

Ao，Kelong1; Yue，Xian2; Zhang，Xiangyang3; Zhao，Hu1; Liu，Jiapeng4; Shi，Jihong3; Daoud，Walid A.3; Li，Hong1,5,6

2024-10-15

10.1016/j.jcis.2024.05.221

Journal of Colloid and Interface Science   影响因子和分区

0021-9797

1095-7103

Developing sustainable metal-free carbon-based electrocatalysts is essential for the deployment of metal-air batteries such as zinc-air batteries (ZABs), among which doping of heteroatoms has attracted tremendous interest over the past decade. However, the effect of the heteroatom covalent bonds in carbon matrix on catalysis was neglected in most studies. Here, an efficient metal-free oxygen reduction reaction (ORR) catalyst is demonstrated by the N-P bonds anchored carbon (termed N,P-C-1000). The N,P-C-1000 catalyst exhibits superior specific surface area of 1362 m g and ORR activity with a half-wave potential of 0.83 V, close to that of 20 wt% Pt/C. Theoretical computations reveal that the p-band center for C-2p orbit in N,P-C-1000 has higher interaction strength with the intermediates, thus reducing the overall reaction energy barrier. The N,P-C-1000 assembled primary ZAB can attain a large peak power density of 121.9 mW cm and a steady discharge platform of ∼1.20 V throughout 120 h. Besides, when served as the cathodic catalyst in a solid-state ZAB, the battery shows flexibility, conspicuous open circuit potential (1.423 V), and high peak power density (85.8 mW cm). Our findings offer a strategy to tune the intrinsic structure of carbon-based catalysts for improved electrocatalytic performance and shed light on future catalysts design for energy storage technologies beyond batteries.

Graphitic N-P pair Mesoporous carbon material Metal-free catalysts Oxygen reduction reaction Zinc-air battery

SCI ; EI

英语

其他

20242316196363

Carbon ; Covalent bonds ; Electrocatalysts ; Electrolytic reduction ; Oxygen ; Oxygen reduction reaction ; Reaction intermediates ; Zinc

Ore Treatment:533.1 ; Zinc and Alloys:546.3 ; Secondary Batteries:702.1.2 ; Physical Chemistry:801.4 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804

CHEMISTRY

2-s2.0-85194775363

Scopus

1.School of Mechanical and Aerospace Engineering,Nanyang Technological University,639798,Singapore
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Mechanical Engineering,City University of Hong Kong,Tat Chee Avenue,Hong Kong
4.School of Advanced Energy,Sun Yat-Sen University,Shenzhen,518107,China
5.CINTRA CNRS/NTU/THALES,UMI 3288,Nanyang Technological University,Singapore
6.Energy Research Institute,Nanyang Technological University,Singapore

Ao，Kelong,Yue，Xian,Zhang，Xiangyang,et al. N-P covalent bond regulation of mesoporous carbon-based catalyst for lowered oxygen reduction overpotential and enhanced zinc-air battery performance[J]. Journal of Colloid and Interface Science,2024,672:107-116.

Ao，Kelong.,Yue，Xian.,Zhang，Xiangyang.,Zhao，Hu.,Liu，Jiapeng.,...&Li，Hong.(2024).N-P covalent bond regulation of mesoporous carbon-based catalyst for lowered oxygen reduction overpotential and enhanced zinc-air battery performance.Journal of Colloid and Interface Science,672,107-116.

Ao，Kelong,et al."N-P covalent bond regulation of mesoporous carbon-based catalyst for lowered oxygen reduction overpotential and enhanced zinc-air battery performance".Journal of Colloid and Interface Science 672(2024):107-116.