Graphene-Carbon Nanotube Hybrids as Robust Catalyst Supports in Proton Exchange Membrane Fuel Cells

W2284625279 · 수집 2026-10-04 18:12:23

T10030 Electrocatalysts for Energy Conversion

CoT 라벨링

라벨링 전

PDF 파일

저장된 PDF 없음

기본 정보

DOI 제목 발행년도 저널 URL 페이지 열기 PDF URL PDF 열기 발행기관 피인용수 라이선스

추가 정보 초록

Catalyst degradation is one major challenge preventing the worldwide commercialization of the Proton Exchange Membrane Fuel Cells. In this study, we investigate the development of a novel hierarchical carbonaceous support for the platinum catalysts, called graphene-carbon nanotube hybrids (GCNT), and its degradation behavior during an accelerated degradation test. The carbon support is fabricated by growing graphene directly onto carbon nanotubes to form a unique all-carbon nanostructure possessing both an ultra-high density of exposed graphitic edges of graphene and a porous structure of carbon nanotubes. The GCNT-supported platinum catalyst exhibits a higher intrinsic catalytic activity than a carbon black-supported platinum catalyst, and much higher than a CNT-supported platinum catalyst. The enhanced catalytic activity of the GCNT-supported platinum catalyst is explained by the high graphitic edge density which promotes the catalytic reactions on platinum catalyst. The GCNT-supported platinum catalyst also exhibits a superior electrochemical stability over that of the carbon black-supported platinum catalyst, explained by the high crystallinity of the GCNT support. The superior stability is expressed by a lower loss in polarization performance, a smaller increase in charge transfer resistance, a lower loss in the platinum electrochemical surface area, a lower rate of carbon corrosion, and a more stable catalyst microstructure.

본문

PDF 본문 자동 추출 실패: [download] not a PDF (Content-Type: text/html, final URL: https://validate.perfdrive.com/fb803c746e9148689b3984a31fccd902/?ssa=b11fcc30-f9ba-4162-8132-dae71ab2f2da&ssb=26476261538&ssc=https%3A%2F%2Fiopscience.iop.org%2Fjournal%2F1945-7111&ssi=78e5a0e5-cnvj-4802-a490-84cd4dde2ab0&ssk=botmanager_support@radware.com&ssm=753840827511406968689527326949368&ssn=142d29a649ae396adaf1239f5517852a81c90365ea35-1dfa-4a77-9d9bcf&sso=94686f5b-51d081f0c9295f75b2b8a6881ea8bb1135149c6363ba5e0b&ssp=66169767661791138941179113652831097&ssq=60057062917049669276110984182219842929920&ssr=MjExLjE4OC41NS4xMTY=&sst=Mozilla/5.0%20(X11;%20Linux%20x86_64)%20AppleWebKit/537.36%20(KHTML,%20like%20Gecko)%20Chrome/126.0%20Safari/537.36%20ai4s-collector/1.0&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJfX3V6bWYiOiI3ZjkwMDAwMzY1ZWEzNS0xZGZhLTRhNzctOWY1Yi01MWQwODFmMGM5MjkxLTE3OTExMTA5ODQ3MjAxODE4NjIwMC0wMDVjYjk5ZTdmZWUxODgyNjVkODY4IiwidXpteCI6IjdmYzAwMDg5NGY1NThkLWU0OWQtNDBmOC1iMjViLTE3ZGQ3OTcyMmY3MDEtMTc5MTExMDk4NDcyMDE4MTg2 (2026-10-05 00:52:51)

활용가능성

이력 0건

아직 편집 이력이 없습니다. 저장할 때마다 이전 내용이 여기에 백업됩니다.