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Preparation of Pt Catalysts Supported on ACF with CNF via Catalytic Growth
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  • Journal title : Carbon letters
  • Volume 11, Issue 1,  2010, pp.38-40
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2010.11.1.038
 Title & Authors
Preparation of Pt Catalysts Supported on ACF with CNF via Catalytic Growth
Park, Sang-Sun; Rhee, Jun-Ki; Jeon, Yu-Kwon; Choi, Sung-Won; Shul, Yong-Gun;
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Carbon supported electrocatalysts are commonly used as electrode materials for polymer electrolyte membrane fuel cells(PEMFCs). These kinds of electrocatalysts provide large surface area and sufficient electrical conductivity. The support of typical PEM fuel cell catalysts has been a traditional conductive type of carbon black. However, even though the carbon particles conduct electrons, there is still significant portion of Pt that is isolated from the external circuit and the PEM, resulting in a low Pt utilization. Herein, new types of carbon materials to effectively utilize the Pt catalyst are being evaluated. Carbon nanofiber/activated carbon fiber (CNF/ACF) composite with multifunctional surfaces were prepared through catalytic growth of CNFs on ACFs. Nickel nitrate was used as a precursor of the catalyst to synthesize carbon nanofibers(CNFs). CNFs were synthesized by pyrolysising using catalysts dispersed in acetone and ACF(activated carbon fiber). The as-prepared samples were characterized with transmission electron microscopy(TEM), scanning electron microscopy(SEM). In TEM image, carbon nanofibers were synthesized on the ACF to form a three-dimensional network. Pt/CNF/ACF was employed as a catalyst for PEMFC. As the ratio of prepared catalyst to commercial catalyst was changed from 0 to 50%, the performance of the mixture of 30 wt% of Pt/CNF/ACF and 70wt% of Pt/C commercial catalyst showed better perfromance than that of 100% commercial catalyst. The unique structure of CNF can supply the significant site for the stabilization of Pt particles. CNF/ACF is expected to be promising support to improve the performance in PEMFC.
ACF;CNF;PEMFC;Carbon support;
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활성탄소에 담지된 백금나노입자의 전기화학적 거동에 대한 그라파이트 나노섬유 첨가효과,조원빈;오미순;김주현;김석;

Korean Chemical Engineering Research, 2010. vol.48. 6, pp.673-678
마이크로웨이브를 이용한 고분자 전해질 연료전지용 복합 탄소 촉매 지지체 (ACF/Graphene)의 합성과 전기화학적 거동,조용일;전유권;박대환;전소미;김태언;오경석;설용건;

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