Graphitic carbon nitride-carbon nanofiber as oxygen catalyst in anion-exchange membrane water electrolyzer and rechargeable metal–air cells

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Title
Graphitic carbon nitride-carbon nanofiber as oxygen catalyst in anion-exchange membrane water electrolyzer and rechargeable metal–air cells
Author(s)
Ji Eun Park; Mi-Ju Kim; Myung Su Lim; Sun Young Kang; Jong Kwan Kim; Seung-Hyeon Oh; Min Her; Young-Hun Cho; Yung-Eun Sung
Publication Date
2018-12
Journal
APPLIED CATALYSIS B-ENVIRONMENTAL, v.237, no., pp.140 - 148
Publisher
ELSEVIER SCIENCE BV
Abstract
Graphitic carbon nitride-carbon nanofiber (g-CN-CNF) was synthesized as a bifunctional catalyst in an anion-exchange membrane water electrolyzer (AEMWE), and primary and rechargeable Zn–air cells. The g-CN-CNF catalyst shows high catalytic activity for oxygen reduction reaction and oxygen evolution reaction in half-cell, with low overpotentials and low Tafel slopes. The high activity is attributed to the synergistic effect of abundant active sites and the electrical conductivity following the pyrolysis of g-CN and CNF. As a result, AEMWE with the g-CN-CNF anode, the first application of a carbon-based catalyst, exhibits outstanding performance that is the highest record in the literature for AEMWE using a non-noble metal catalyst. In addition, the performance and durability of Zn-air cells with g-CN-CNF cathode outperform those fabricated with commercial platinum. © 2018 Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/5037
ISSN
0926-3373
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
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