High performance and durable nanostructured TiN supported Pt50-Ru50 anode catalyst for direct methanol fuel cell (DMFC)

被引：94
作者：
Patel, Prasad Prakash [1 ]
Datta, Moni Kanchan [2 ,3 ]
Jampani, Prashanth H. [2 ]
Hong, Daeho [2 ]
Poston, James A. [4 ]
Manivannan, Ayyakkannu [4 ]
Kumta, Prashant N. [1 ,2 ,3 ,5 ,6 ]
机构：
[1] Univ Pittsburgh, Swanson Sch Engn, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA
[2] Univ Pittsburgh, Swanson Sch Engn, Dept Bioengn, Pittsburgh, PA 15261 USA
[3] Univ Pittsburgh, Ctr Complex Engn Multifunct Mat, Pittsburgh, PA 15261 USA
[4] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA
[5] Univ Pittsburgh, Mech Engn & Mat Sci, Swanson Sch Engn, Pittsburgh, PA 15261 USA
[6] Univ Pittsburgh, Sch Dent Med, Pittsburgh, PA 15217 USA
来源：
JOURNAL OF POWER SOURCES | 2015年 / 293卷
基金：
美国国家科学基金会;
关键词：
Direct methanol fuel cell; Methanol oxidation; Platinum; Ruthenium; Nanostructured support; Titanium nitride; ELECTRO-CATALYSTS; TITANIUM NITRIDE; CARBON NANOTUBES; ENERGY-STORAGE; PLATINUM NANOPARTICLES; WATER ELECTROLYSIS; HALIDE APPROACH; OXIDATION; ELECTROOXIDATION; SURFACE;
D O I：
10.1016/j.jpowsour.2015.05.051
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The design of high performance and durable electro-catalyst has been of particular interest for DMFC anodes. Pt(Ru) has been considered the most active DMFC anode catalyst. In this work, the reaction kinetics of Pt(Ru) electro-catalyst has been improved by synthesizing high active surface area Pt-50(Ru-50) catalyst supported on highly conductive nanostructured titanium nitride, TiN. The Pt(Ru)/TiN has been synthesized by a complexed sal-gel (CSG) process using non-halide precursors of Pt and Ru. High surface area Pt(Ru)/TiN shows promising electrochemical performance for methanol oxidation, showing similar to 52% improved catalytic activity at similar to 0.65 V (vs NHE) and stability/durability in comparison with commercial JM-Pt(Ru). Single cell DMFC performance shows 56% improved maximum power density and superior electrochemical stability for CSG-Pt(Ru)/TiN compared to that of commercial JM-Pt(Ru). This is attributed to the uniform dispersion of Pt(Ru) achieved on the nanostructured TiN (support) yielding higher electrochemical active surface area and lower charge transfer resistance than commercial JM-Pt(Ru). Thus, the present study demonstrates the potential of nanostructured TiN as a support for Pt(Ru) based anode electro-catalyst for DMFC applications. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：437 / 446
页数：10
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