Raw and pyrolyzed (with and without melamine) graphene nanoplatelets with different surface areas as PEM fuel cell catalyst supports
(주)코리아스칼라
- 최초 등록일
- 2023.05.08
- 최종 저작일
- 2021.12
- 24페이지/ 어도비 PDF
- 가격 6,100원
* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 31권 / 6호
ㆍ저자명 : Ayşenur Öztürk, Ayşe Bayrakçeken Yurtcan
목차
Abstract
Graphic abstract
1 Introduction
2 Materials and methods
2.1 Materials
2.2 Pyrolysis of the GNPs
2.3 Pt loading on GNPs catalyst supports
2.4 MEA preparation
2.5 Physical characterization
2.6 Three-electrode cell system
2.7 PEM fuel cell performance test
3 Results and discussion
4 Conclusion
Acknowledgements
References
영어 초록
Platinum (Pt) catalysts dispersed on carbon-based support materials are generally used in the polymer electrolyte membrane (PEM) fuel cells. In this study, commercial graphene nanoplatelets (GNPs), with different surface areas (320, 530, 800 m2 g− 1), were used as catalyst supports in PEM fuel cells. These GNPs were also pyrolyzed under the inert atmosphere, with and without melamine, as the nitrogen (N) source. Various characterizations (Elemental analysis, FTIR, Raman spectroscopy, BET, TEM, HRTEM, SAED, XRD, TGA, ICP-MS, contact angle measurement, CV, ORR, chronoamperometry, EIS, PEM fuel cell performance test) were performed for the detailed analysis of Pt/GNPs. Based on the three-electrode cell system, the lowest electrochemical surface area (ECSA) loss (29.9%), Pt mass activity loss (20.3%) and overall (charge and mass) resistance (42.2 Ω) were obtained with the Pt/M-530 catalyst. According to the in-situ PEM fuel cell performance results, the specific peak power density was recorded as (450 mW mg Pt− 1) for the Pt/R-530 catalyst, which has also the second most hydrophobic catalyst layer surface with the 146.5° ± 1.28° contact angle value. On the heels of Pt/R-530, the two best performances also belong to the Pt/M-530 (391 mW mg Pt− 1) and Pt/P-530 (378 mW mg Pt− 1) catalysts of the same group.
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