High-performance anion exchange membrane fuel cells and zinc-air batteries enabled by a hierarchically porous hollow Fe/N/C aerogel catalyst

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932170" target="_blank" >RIV/60461373:22310/25:43932170 - isvavai.cz</a>

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2025/ta/d4ta08895f" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/ta/d4ta08895f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4ta08895f" target="_blank" >10.1039/d4ta08895f</a>

Result language

angličtina

Original language name

High-performance anion exchange membrane fuel cells and zinc-air batteries enabled by a hierarchically porous hollow Fe/N/C aerogel catalyst

Original language description

Currently, the development of Fe/N/C catalysts is attracting more and more attention, due to their exciting potential applications in advanced anion-exchange membrane fuel cells (AEMFCs) and zinc-air batteries (ZABs). Among these, the main hurdle lies in the high mass transport resistance associated with the micropore-dominated Fe/N/C catalysts. In this work, we report the exploration of a carboxymethyl cellulose (CMC)-induced hierarchically porous hollow Fe/N/C aerogel (FeN-CA) catalyst, which remarkably enhances mass transport and improves the AEMFC/ZAB performance. It is witnessed that the resulting aerogel catalyst increases the mesoporous and macroporous structures, thus effectively reducing the oxygen transport resistance within the electrodes at high current densities. Consequently, the resulting FeN-CA catalyst in AEMFCs exhibits a reduced mass transfer overpotential (235 mV) at 1500 mA cm-2 and a peak power density of 774 mW cm-2 at 1724 mA cm-2, respectively. Moreover, in ZABs, it delivers an exceptional peak power density of up to 500 mW gcatalyst-1 (25 degrees C) and 766 mW gcatalyst-1 (80 degrees C), which is the highest among non-precious metal catalysts (NPMCs) ever reported, indicating their future potential in commercial applications.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Volume of the periodical

13

Issue of the periodical within the volume

11

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

8035-8043

UT code for WoS article

001426277300001

EID of the result in the Scopus database

2-s2.0-86000783992