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2020 Vol.30, Issue 1 Preview Page
Synthesis of TiO2 Composited Nitrogen-doped Carbon Supports for High-Performance Methanol Oxidation Activity

고성능 메탄올 산화 반응을 위한 이산화 티타늄 복합화된 질소 도핑 탄소 지지체의 합성

Hyun-Gi Jo
,
Hyo-Jin Ahn†
조 현기
,
안 효진†
Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
서울과학기술대학교 신소재공학과
†Corresponding author E-Mail : hjahn@seoultech.ac.kr (H.-J. Ahn, Seoul Nat’l Univ. of Sci. and Tech.)
January 2020. pp. 14-21
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Abstract

Carbon supports for dispersed platinum (Pt) electrocatalysts in direct methanol fuel cells (DMFCs) are being continuously developed to improve electrochemical performance and catalyst stability. However, carbon supports still require solutions to reduce costs and improve catalyst efficiency. In this study, we prepare well-dispersed Pt electrocatalysts by introducing titanium dioxide (TiO2) into biomass based nitrogen-doped carbon supports. In order to obtain optimized electrochemical performance, different amounts of TiO2 component are controlled by three types (Pt/TNC-2 wt%, Pt/TNC-4 wt%, and Pt/TNC-6 wt%). Especially, the anodic current density of Pt/TNC-4 wt% is 707.0 mA g−1pt, which is about 1.65 times higher than that of commercial Pt/C (429.1 mA g−1pt); Pt/TNC-4wt% also exhibits excellent catalytic stability, with a retention rate of 91 %. This novel support provides electrochemical performance improvement including several advantages of improved anodic current density and catalyst stability due to the well-dispersed Pt nanoparticles on the support by the introduction of TiO2 component and nitrogen doping in carbon. Therefore, Pt/TNC-4 wt% may be electrocatalyst a promising catalyst as an anode for high-performance DMFCs.

Keywords
methanol oxidation reaction
titanium dioxide
carbon supports
platinum
electrocatalysts stability
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 30
  • No :1
  • Pages :14-21
  • Received Date : 2019-10-29
  • Revised Date : 2019-11-19
  • Accepted Date : 2019-12-03
  • DOI :https://doi.org/10.3740/MRSK.2020.30.1.14
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