NiCo-loaded carbon nanofibers obtained by electrospinning: Bifunctional behavior as air electrodes

被引：39

作者：

Alegre, C. ^{[1
,2
]}

Modica, E. ^{[1
]}

Di Blasi, A. ^{[1
]}

Di Blasi, O. ^{[1
]}

Busacca, C. ^{[1
]}

Ferraro, M. ^{[1
]}

Arico, A. S. ^{[1
]}

Antonucci, V. ^{[1
]}

Baglio, V. ^{[1
]}

机构：

[1] CNR, ITAE, Salita Santa Lucia Contesse 5, I-98126 Messina, Italy

[2] Univ Zaragoza, CSIC, Lab Invest Fluidodinam & Tecnol Combust, LIFTEC, Maria de Luna 10, Zaragoza 50018, Spain

来源：

RENEWABLE ENERGY | 2018年 / 125卷

关键词：

Bifunctional catalysts; Metal-air batteries; Air electrodes; Carbon nanofibers; Transition metal oxides; OXYGEN REDUCTION REACTION; LITHIUM ION BATTERIES; NONPRECIOUS METAL CATALYST; EVOLUTION REACTIONS; RECENT PROGRESS; ENERGY-STORAGE; ELECTROCATALYSTS; PERFORMANCE; EFFICIENT; OXIDES;

D O I：

10.1016/j.renene.2018.02.089

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, carbon nanofibers (CNF) synthesized by electrospinning are loaded with a combination of nickel and cobalt, both in the metallic and oxide forms (NiCo-loaded CNF), and studied as bifunctional air electrodes for metal-air batteries. The performance of the NiCo-loaded CNF sample is compared with a similarly prepared CoOCo/CNF catalyst both for oxygen reduction and evolution reactions. The combination of nickel and cobalt, both in metallic and oxide form, leads to a bifunctional catalyst with a half wave potential for the ORR of 874 mV vs. RHE and a reversibility (Delta EOER-ORR) of 764 mV. The stability of the catalyst is assessed by means of a 24 h chronopotentiometric test at -80 mA cm(-2) and charge discharge cycles (30 min each) at +/- 20 mA cm(-2). NiCo-loaded CNF shows a remarkable stability, maintaining a constant potential during both tests. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：250 / 259

页数：10

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