Cobalt Phthalocyanine-Doped Polymer-Based Electrocatalyst for Rechargeable Zinc-Air Batteries

被引：7

作者：

Kumar, Yogesh ^{[1
]}

Akula, Srinu ^{[1
]}

Kibena-Poldsepp, Elo ^{[1
]}

Kaarik, Maike ^{[1
]}

Kozlova, Jekaterina ^{[2
]}

Kikas, Arvo ^{[2
]}

Aruvali, Jaan ^{[3
]}

Kisand, Vambola ^{[2
]}

Leis, Jaan ^{[1
]}

Tamm, Aile ^{[2
]}

Tammeveski, Kaido ^{[1
]}

机构：

[1] Univ Tartu, Inst Chem, EE-50411 Tartu, Estonia

[2] Univ Tartu, Inst Phys, EE-50411 Tartu, Estonia

[3] Univ Tartu, Inst Ecol & Earth Sci, EE-50409 Tartu, Estonia

来源：

MATERIALS | 2023年 / 16卷 / 14期

关键词：

phloroglucinol-formaldehyde network; nitrogen doping; electrocatalysis; non-precious metal catalyst; oxygen reduction reaction; oxygen evolution reaction; rechargeable zinc-air battery; OXYGEN REDUCTION REACTION; METAL-ORGANIC FRAMEWORK; CARBON NANOTUBES; CATALYSTS; SITES; OER; ORR;

D O I：

10.3390/ma16145105

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：

Rechargeable zinc-air batteries (RZAB) have gained significant attention as potential energy storage devices due to their high energy density, cost-effectiveness, and to the fact that they are environmentally safe. However, the practical implementation of RZABs has been impeded by challenges such as sluggish oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), including poor cyclability. Herein, we report the preparation of cobalt- and nitrogen-doped porous carbon derived from phloroglucinol-formaldehyde polymer networks with 2-methyl imidazole and cobalt phthalocyanine as precursors for nitrogen and cobalt. The CoN-PC-2 catalyst prepared in this study exhibits commendable electrocatalytic activity for both ORR and OER, evidenced by a half-wave potential of 0.81 V and E-j=10 of 1.70 V. Moreover, the catalyst demonstrates outstanding performance in zinc-air batteries, achieving a peak power density of 158 mW cm(-2) and displaying excellent stability during charge-discharge cycles. The findings from this study aim to provide valuable insights and guidelines for further research and the development of hierarchical micro-mesoporous carbon materials from polymer networks, facilitating their potential commercialisation and widespread deployment in energy storage applications.

引用

页数：14

共 63 条

[1] Transition metal (Fe, Co, Mn, Cu) containing nitrogen-doped porous carbon as efficient oxygen reduction electrocatalysts for anion exchange membrane fuel cells [J].