Electron and proton conductivity of Fe-N-C cathodes for PEM fuel cells: A model-based electrochemical impedance spectroscopy measurement

被引：19

作者：

Reshetenko, Tatyana ^{[1
]}

Serov, Alexey ^{[2
]}

Odgaard, Madeleine ^{[3
]}

Randolf, Gunter ^{[4
]}

Osmieri, Luigi ^{[5
]}

Kulikovsky, Andrei ^{[6
,7
]}

机构：

[1] Univ Hawaii, Hawaii Nat Energy Inst, Honolulu, HI 96822 USA

[2] Pajarito Powder LLC, 3600 Osuna Rd NE,Suite 309, Albuquerque, NM 87109 USA

[3] IRD Fuel Cells LLC, 8500 Washington St NE, Albuquerque, NM 87113 USA

[4] GRandalytics, 2343 Oahu Ave, Honolulu, HI 96822 USA

[5] Natl Renewable Energy Lab, Golden, CO 80401 USA

[6] Forschungszentrum Julich GmbH, Inst Energy & Climate Res, IEK Electrochem Proc Engn 14, D-52425 Julich, Germany

[7] Lomonosov Moscow State Univ, Res Comp Ctr, Moscow 119991, Russia

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2020年 / 118卷

关键词：

PEM fuel cell; PGM-free electrode; Proton conductivity; Electron conductivity; Impedance; Modeling; METAL-FREE CATALYSTS; LAYERS;

D O I：

10.1016/j.elecom.2020.106795

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Impedance spectra of a PEM fuel cell with three Fe-N-C cathodes have been measured under the H-2/N-2 testing regime. The spectra have been fitted using a recently developed physics-based impedance model, which takes into account finite proton (sigma(p)) and electron (sigma(e)) conductivity of the oxygen-free cathode catalyst layer. Fitting allowed to extract numerical data for sigma(p), sigma(e), the double layer capacitance, and the inductance of cables used for measuring impedance spectra. The values of sigma(p) and sigma(e) are close to what previously found for standard Pt/C electrodes, which is found for the first time using PGM-free catalysts. The method enables simultaneous measurement of reference proton and electron conductivity of PEMFC cathode.

引用

页数：5

共 21 条

[1] Electronic conductivity of catalyst layers of polymer electrolyte membrane fuel cells: Through-plane vs. in-plane
Ahadi, Mohammad
Tam, Mickey
Stumper, Jurgen
Bahrami, Majid
[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2019, 44 (07) : 3603 - 3614
[2] Role of Surface Chemistry on Catalyst/Ionomer Interactions for Transition Metal-Nitrogen-Carbon Electrocatalysts
Artyshkova, Kateryna
Workrnan, Michael J.
Matanovic, Ivana
Dzara, Michael J.
Ngo, Chilan
Pylypenko, Svitlana
Serov, Alexey
Atanassov, Plamen
[J]. ACS APPLIED ENERGY MATERIALS, 2018, 1 (01): : 68 - 77
[3] Effective protonic and electronic conductivity of the catalyst layers in proton exchange membrane fuel cells
Du, CY
Shi, PF
Cheng, XQ
Yin, GP
[J]. ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (05) : 435 - 440
[4] Atomically dispersed metal-nitrogen-carbon catalysts for fuel cells: advances in catalyst design, electrode performance, and durability improvement
He, Yanghua
Liu, Shengwen
Priest, Cameron
Shi, Qiurong
Wu, Gang
[J]. CHEMICAL SOCIETY REVIEWS, 2020, 49 (11) : 3484 - 3524
[5] Toward Platinum Group Metal-Free Catalysts for Hydrogen/AirProton-Exchange Membrane Fuel Cells
Jaouen, Frederic
Jones, Deborah
Coutard, Nathan
Artero, Vincent
Strasser, Peter
Kucernak, Anthony
[J]. JOHNSON MATTHEY TECHNOLOGY REVIEW, 2018, 62 (02): : 231 - 255
[6] Structure of Active Sites of Fe-N-C Nano-Catalysts for Alkaline Exchange Membrane Fuel Cells
Kishi, Hirofumi
Sakamoto, Tomokazu
Asazawa, Koichiro
Yamaguchi, Susumu
Kato, Takeshi
Zulevi, Barr
Serov, Alexey
Artyushkova, Kateryna
Atanassov, Plamen
Matsumura, Daiju
Tamura, Kazuhisa
Nishihata, Yasuo
Tanaka, Hirohisa
[J]. NANOMATERIALS, 2018, 8 (12):
[7] A model for impedance of a PEM fuel cell cathode with poor electron conductivity
Kulikovsky, Andrei
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2017, 801 : 122 - 128
[8] Ionic conductivity of PEMFC electrodes - Effect of Nafion loading
Li, GC
Pickup, PG
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (11) : C745 - C752
[9] Structure and activity of metal-centered coordination sites in pyrolyzed metal-nitrogen-carbon catalysts for the electrochemical reduction of O2
Li, Jingkun
Jaouen, Frederic
[J]. CURRENT OPINION IN ELECTROCHEMISTRY, 2018, 9 : 198 - 206
[10] Liu L., 2009, ON TIME DETERMINATIO, V19, P43, DOI DOI 10.1149/1.3248348

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