FeCo/FeCoP encapsulated in N, Mn-codoped three-dimensional fluffy porous carbon nanostructures as highly efficient bifunctional electrocatalyst with multi-components synergistic catalysis for ultra-stable rechargeable Zn-air batteries

被引：135

作者：

Chen, Yu-Ping ^{[1
]}

Lin, Shi-Yi ^{[1
]}

Sun, Rui-Min ^{[1
]}

Wang, Ai-Jun ^{[1
]}

Zhang, Lu ^{[1
]}

Ma, Xiaohong ^{[2
]}

Feng, Jiu-Ju ^{[1
]}

机构：

[1] Zhejiang Normal Univ, Coll Geog & Environm Sci, Coll Chem & Life Sci, Key Lab,Minist Educ Adv Catalysis Mat, Jinhua 321004, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2022年 / 605卷

关键词：

Doped porous carbon; Polyinosinic acid; Multi-components; Bifunctional oxygen electrocatalyst; Rechargeable Zn-air batteries; OXYGEN-REDUCTION; ALLOY NANOPARTICLES; QUANTUM DOTS; NANOTUBES; NITROGEN; NANOCAGES; ELECTRODE; REMOVAL;

D O I：

10.1016/j.jcis.2021.07.082

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：

Currently, it is critical but a tricky point to develop economical, high-efficiency, and durable non-precious metal electrocatalysts towards oxygen reduction and oxygen evolution reaction (ORR/OER) in rechargeable Zn-air batteries. Herein, N, Mn-codoped three-dimensional (3D) fluffy porous carbon nanostructures encapsulating FeCo/FeCoP alloyed nanoparticles (FeCo/FeCoP@NMn-CNS) are prepared by one-step pyrolysis of the metal precursors and polyinosinic acid. The optimized hybrid nanocomposite (obtained at 800 degrees C, named as FeCo/FeCoP@NMn-CNS-800) exhibits outstanding catalytic performance in the alkaline electrolyte with a half-wave potential (E-1/2) of 0.84 V for the ORR and an overpotential of 325 mV towards the OER at 10 mA cm(-2). Impressively, the FeCo/FeCoP@NMn-CNS-800-assem bled rechargeable Zn-air battery presents an open-circuit voltage of 1.522 V (vs. RHE), a peak power density of 135.0 mW cm(-2), and long-term durability by charge-discharge cycling for 200 h, surpassing commercial Pt/C + RuO2 based counterpart. This work affords valuable guidelines for exploring advanced bifunctional ORR and OER catalysts in rational construction of high-quality Zn-air batteries. (C) 2021 Elsevier Inc. All rights reserved.

引用

页码：451 / 462

页数：12

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