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author:

Zheng, Jianqi (Zheng, Jianqi.) [1] | Sun, Dexin (Sun, Dexin.) [2] | Huang, Baobing (Huang, Baobing.) [3] (Scholars:黄宝冰) | Liu, Yuchuan (Liu, Yuchuan.) [4] | Xie, Zailai (Xie, Zailai.) [5] (Scholars:谢在来)

Indexed by:

Scopus SCIE

Abstract:

Developing of novel carbon-based materials for electrocatalytic oxygen reduction reaction is highly important for sustainable energy conversion. In this work, iron-containing ionogels were prepared from functional ionic liquid 1-propionic acid-2-methyl imidazole bromide as the linker and an organically-modified silica framework as the host, which were polymerized in the presence of iron(III) nitrate nonahydrate. The ionogels are mechanically stable, yellowish and transparent. After pyrolysis and washing by acid, unique mesoporous carbon materials were innovatively synthesized. Moreover, the as-obtained carbon materials possess very high surface areas (1127 m(2) g(-1)), significant mesoporosity and abundant catalytic sites (e. g., effective N configurations). The optimal catalyst exhibits remarkable ORR activity with an onset potential (E-onset) of 0.98 V vs. RHE, a half-wave potential (E-1/2) of 0.823 V vs. RHE and a diffusion-limited current density (j(L)) of 5.75 mAcm(-2) in 0.1 M KOH, comparable to the commercial Pt/C catalyst in the same condition. This work provided a new strategy to fabricate promising electrocatalyts for application in fuel cells.

Keyword:

Ionogels Mesoporous carbons N configurations Oxygen reduction reaction

Community:

  • [ 1 ] [Zheng, Jianqi]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Ma, Coll Chem, 2 Xueyuan Rd, Fuzhou 350116, Peoples R China
  • [ 2 ] [Huang, Baobing]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Ma, Coll Chem, 2 Xueyuan Rd, Fuzhou 350116, Peoples R China
  • [ 3 ] [Liu, Yuchuan]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Ma, Coll Chem, 2 Xueyuan Rd, Fuzhou 350116, Peoples R China
  • [ 4 ] [Xie, Zailai]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Ma, Coll Chem, 2 Xueyuan Rd, Fuzhou 350116, Peoples R China
  • [ 5 ] [Sun, Dexin]PowerChina Railway Construct Co Ltd, Beijing 100037, Peoples R China

Reprint 's Address:

  • 谢在来

    [Xie, Zailai]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Ma, Coll Chem, 2 Xueyuan Rd, Fuzhou 350116, Peoples R China

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Source :

CHEMISTRYSELECT

ISSN: 2365-6549

Year: 2019

Issue: 47

Volume: 4

Page: 13828-13834

1 . 8 1 1

JCR@2019

1 . 9 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:184

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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