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Park, Jongnam
Materials and Chemistry Lab (MCL)
Research Interests
  • Inorganic synthesis, microfluidics, nanomaterials, surface engineering, bioimaging

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Tailor-Made Charged Catechol-Based Polymeric Ligands to Build Robust Fuel Cells Containing Antioxidative Nanoparticles

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dc.contributor.author Kim, Hyunhong ko
dc.contributor.author Yook, Seung Ho ko
dc.contributor.author Kim, Ho Young ko
dc.contributor.author Choi, Yonghoon ko
dc.contributor.author Lim, Yeongsu ko
dc.contributor.author Hwang, Yujin ko
dc.contributor.author Kim, Jeongho ko
dc.contributor.author Lee, Kwan Young ko
dc.contributor.author Jang, Seung Soon ko
dc.contributor.author Park, Jongnam ko
dc.contributor.author Kim, Jin Young ko
dc.date.available 2022-05-11T01:47:11Z -
dc.date.created 2022-05-03 ko
dc.date.issued 2022-09 ko
dc.identifier.citation ADVANCED ELECTRONIC MATERIALS, v.8, no.9, pp.2200171 ko
dc.identifier.issn 2199-160X ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/58406 -
dc.description.abstract Cerium oxide nanoparticles (CNPs) are investigated as radical scavengers to increase the durability of polymer electrolyte membrane fuel cells (PEMFCs). However, the practical application of CNPs in PEMFCs is hindered by the low stability of the CNPs during cell operation and the low compatibility of the CNPs with PEM. In this study, as effective antioxidants for PEMs, surface-engineered CNPs, passivated with dopamine-based copolymer ligands containing multidentate catechol pendant groups (CNP@DPLs), are reported. The DPLs provide enhanced colloidal and chemical stability in acidic and radical environments, thanks to the robust catechol binding groups and polymer backbone shielding. It is highlighted that they also improved the redox cycling ability of the CNPs, with catechol's additional radical scavenging. Using the CNP@DPLs as a model system, the effect of surface charge is also examined. Negatively charged sulfonic acid-functionalized CNPs (CNP@DSAs) exhibit the highest compatibility with PEMs. Coherently, the CNP@DSA-based reinforced composite membrane (CNP@DSA-RCM) shows the lowest disintegration rate in Fenton's test. The PEMFC based on the CNP@DSA-RCM outperforms previously reported antioxidant-based PEMFCs. Importantly, while the pristine PEMFC and Ce salt-based one undergoes degradation after 40 h, the CNP@DSA based PEMFC retains its performance even after 100 h. ko
dc.language 영어 ko
dc.publisher Wiley-VCH Verlag ko
dc.title Tailor-Made Charged Catechol-Based Polymeric Ligands to Build Robust Fuel Cells Containing Antioxidative Nanoparticles ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85127665781 ko
dc.identifier.wosid 000781145400001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/aelm.202200171 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/10.1002/aelm.202200171 ko
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