Zinc-assisted synthesis of Fe-N-C catalysts based on polyaniline with high oxygen reduction reaction catalytic activities in direct methanol fuel cells

被引：4

作者：

Zhang, Xuelin ^{[1
,5
]}

Hou, Chenjun ^{[1
]}

Yuan, Weijian ^{[1
]}

Deng, Chengwei ^{[2
]}

Ji, Feng ^{[2
]}

Tian, Li ^{[1
]}

Lin, Guochang ^{[3
]}

Deng, Huichao ^{[4
,6
]}

Zhang, Yufeng ^{[1
]}

机构：

[1] Harbin Inst Technol, MEMS Ctr, Harbin, Peoples R China

[2] Shanghai Inst Space Power Sources, State Key Lab Space Power Sources Technol, Shanghai, Peoples R China

[3] Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin, Peoples R China

[4] Beihang Univ, Sch Mech Engn & Automat, Beijing, Peoples R China

[5] Harbin Inst Technol, MEMS Ctr, Harbin 150001, Peoples R China

[6] Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China

来源：

FUEL CELLS | 2023年 / 23卷 / 01期

关键词：

direct methanol fuel cells; Fe-N-C; polyaniline; oxygen reduction reaction; zinc-assisted synthesis; NITROGEN-CARBON CATALYSTS; HIGH-PERFORMANCE; ACTIVE-SITES; IRON; ELECTROCATALYST; G-C3N4;

D O I：

10.1002/fuce.202200118

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Fe-N-C catalysts show great potential to replace Pt/C in oxygen reduction reaction (ORR). Polyaniline (PANI) is an ideal precursor with an abundant and homogeneous distribution of nitrogen sources. However, Fe-N-C based on PANI suffers from an unsatisfied performance in acidic media. Herein, a facile zinc-assisted synthesis of Fe-N-C based on PANI was reported in this paper. ZnCl2 templates can be removed completely in the pyrolysis procedure, creating abundant porous structures to accelerate the mass transfer and boost ORR performance. Fe-N-C-2 with the adequate and optimizing amount of zinc shows an excellent ORR performance (E-1/2 = 0.91 V in alkaline and E-1/2 = 0.825 V in acidic media) compared with Pt/C (E-1/2 = 0.89 V in alkaline and E-1/2 = 0.84 V in acidic media). Furthermore, a high power density and a long-term operation within 6 h of direct methanol fuel cell based on brilliant Fe-N-C-2 verify a great promising application of potable power devices in the future.

引用

页码：42 / 50

页数：9

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