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Ultra‐Low Pt Loaded Porous Carbon Microparticles with Controlled Channel Structure for High‐Performance Fuel Cell Catalysts

Ultra‐Low Pt Loaded Porous Carbon Microparticles with Controlled Channel Structure for... Developing a highly efficient and durable proton exchange membrane fuel cell (PEMFC) using a low amount of platinum is essential for minimizing the total cost. Herein, the development of high‐performance PEMFC catalysts is demonstrated using ultra‐low Pt loaded (1 wt%) porous carbon with controlled channel diameters (Dch = 13–63 nm), produced from block copolymer particles. The single cell based on the catalyst with the largest Dch of 63 nm yields an initial maximum power density of 1230 mW cm−2 and high durability showing 1120 mW cm−2 after 30 000 cycles under H2/O2 flow, which outperforms those of commercial Pt/C catalysts despite 1/20 Pt usage. Furthermore, the catalyst shows outstanding performance with 51 kW per gram of Pt (kW gPt−1) after 30 000 cycles in H2/air flow, which is the highest performance reported to date. The channel structure and large Dch of the porous particles are the keys to enhancing the power density by improving the proton and mass transport. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Energy Materials Wiley

Ultra‐Low Pt Loaded Porous Carbon Microparticles with Controlled Channel Structure for High‐Performance Fuel Cell Catalysts

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References (68)

Publisher
Wiley
Copyright
© 2021 Wiley‐VCH GmbH
ISSN
1614-6832
eISSN
1614-6840
DOI
10.1002/aenm.202102970
Publisher site
See Article on Publisher Site

Abstract

Developing a highly efficient and durable proton exchange membrane fuel cell (PEMFC) using a low amount of platinum is essential for minimizing the total cost. Herein, the development of high‐performance PEMFC catalysts is demonstrated using ultra‐low Pt loaded (1 wt%) porous carbon with controlled channel diameters (Dch = 13–63 nm), produced from block copolymer particles. The single cell based on the catalyst with the largest Dch of 63 nm yields an initial maximum power density of 1230 mW cm−2 and high durability showing 1120 mW cm−2 after 30 000 cycles under H2/O2 flow, which outperforms those of commercial Pt/C catalysts despite 1/20 Pt usage. Furthermore, the catalyst shows outstanding performance with 51 kW per gram of Pt (kW gPt−1) after 30 000 cycles in H2/air flow, which is the highest performance reported to date. The channel structure and large Dch of the porous particles are the keys to enhancing the power density by improving the proton and mass transport.

Journal

Advanced Energy Materials – Wiley

Published: Dec 1, 2021

Keywords: durability; mesoporous carbon particles; oxygen reduction reaction; PEM fuel cells; ultra‐low Pt use

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