Direct Methanol Fuel Cell Study on anode and cathode catalysts 曹殿学.

Slides:

Advertisements

Similar presentations

Fuel Cells and a Nanoscale Approach to Materials Design Chris Lucas Department of Physics Outline PEM fuel cells (issues) A nanoscale approach to materials.

Advertisements

Department of Chemical Engineering Nara National College of Technology Takanori KOBAYASHI, Atsuhiro KAWAMURA, Katsumi KATAKURA, Hirohisa YAMADA Electrochemical.

Introduction to Fuel Cells

Status of the development of DAFC : A focus on higher alcohols N.R.Bandyopadhya A, J.Datta B* A. Dr. M.N.Dastur School of Materials Science & Engineering.

Unit 6 Fuel Cells

Polttokennot Jorma Selkäinaho Aalto yliopisto. Fuel cells Fuel cell makes electricity directly from fuel Typical fuels H 2, CH 4, CH 3 OH Exhaust H 2.

ACS NORM Kinetic Study of Formic Acid Oxidation using PtRu-CNT and PtBi-CNT Kenichi Shimizu; I. Frank Cheng; Clive Yen; Byounghoon Yoon; Chien M.

Durability of Carbon Nanofiber & Carbon Nanotube as Catalyst Support for Proton Exchange Membrane Fuel Cells Shuang Ma Andersen 1, Peter Lund 2, Yli-Rantala.

Hydrogen electrolysis Hydrogen electrolysis is the process of running an electrical current through water (H 2 O) and separating the hydrogen from the.

Nanotechnology in Hydrogen Fuel Cells By Morten Bakker "Energy & Nano" - Top Master in Nanoscience Symposium 17 June 2009.

Hydrogen Fuel Cells - How they make electricity. Sources- Works Cited  Wright, Steve. "A Basic Overview of Fuel Cell Technology." Collecting the History.

Application: A novel, non-destructive method which provides characterization of the three-phase interface in both catalyst and diffusion layers, between.

Physics E19 Interfaces and Energy Conversion ZAE BAYERN Bavarian Centre of Applied Energy Research Division 1: Technology for Energy Systems and Renewable.

Taina Rauhala Fuel Cell Catalysts Based on Metal Nanoparticles.

1 DIRECT METHANOL FUEL CELL WITH EXTENDED REACTION ZONE ANODE Alex Bauer, Elöd L. Gyenge and Colin W. Oloman Department of Chemical and Biological Engineering.

PRiME 2008: Joint International Meeting Honolulu – October 16, 2008 High Performance Anode Catalysts for Direct Borohydride Fuel Cells PRiME 2008: Joint.

Fuel Cells with no Precious Metals and no Liquid Electrolyte Shimshon Gottesfeld Cellera Technologies, Ltd Caesaria Industrial Park, Israel TAU, Feb 5,

Fuel Cell Car Atoms and Subatomic Particles Atoms are composed of Protons, Neutrons, and Electrons Protons are positive, neutrons are neutral, and electrons.

Oxygen Reduction and Methanol Oxidation Reaction in Alkaline Methanol Fuel Cell Tam Duong, Toby Liu, Yan Yushan Ph.D Department of Chemical and Environmental.

Electrochemistry for Engineers

Hydrogen Fuel Cells Maddie Droher. What is a fuel cell? An energy conversion device set to replace combustion engines and additional batteries in a number.

Center for Materials Chemistry

ELECTROCHEMICAL SYSTEMS FOR ELECTRIC POWER GENERATION

150W Portable Direct Methanol Fuel Cell Power Supply/Battery Charger Lawrence J. Gestaut Cecelia Cropley Giner Electrochemical Systems, LLC Newton, MA.

Core – Shell anodic catalysts for Direct Methanol and Direct Ethylene Glycol Fuel Cells Dima Kaplan

Roles of Carbon Nanostructures for Advanced Energy Solutions Prashant V. Kamat University of Notre Dame Radiation Research Laboratory South Bend, IN Presented.

1 T.Maiyalagan and Prof. B. Viswanathan Department of Chemistry, Indian Institute of Technology, Madras Chennai , India Nitrogen containing carbon.

November 14, 2008 Application of Galvanic Exchange Reaction for Preparation of Pt coated Fe Nanoparticles supported by Single-Walled Carbon Nanotubes:

Intro to PEM Fuel Cells. What is a Fuel Cell? A fuel cell is an energy conversion device that reacts a fuel and oxygen to produce electricity. The most.

University of South Carolina FCR Laboratory Dept. of Chemical Engineering EXPERIMENT STUDIES.

Dept. of Power Mechanical Engineering, National Tsing Hua University Kai Fei, Chao-Jen Tsai (Research students), Che-Wun Hong (Professor) Thermal Lattice.

§7.11 Polarization of electrode

“minimal” galvanic cells

Alkaline Methanol Fuel Cell Tam Duong Dr. Yushan Yan.

Development of Nanocomposite Membranes for High Pressure PEM Fuel Cell/Electrolyzer Applications Michael Pien, Marvin Warshay, Steven Lis, Radha Jalan.

MATERIALS FOR CLEAN ENERGY TECHNOLOGIES ARUMUGAM MANTHIRAM Electrochemical Energy Laboratory

(in the U.S. in 1997, cents per kWh) coalnucleargasoilwindsolar 2.1 ¢2.3 ¢ 3.6 ¢ 3.9 ¢ 5.5 ¢ 22 ¢ Nuclear Energy Institute, American Wind Energy Association,

Selective Laser Sintering of Graphite Composite Bipolar Plates for PEM Fuel Cells Nannan Guo, Ming C. Leu Center for Aerospace Manufacturing Technologies,

Physics E19 Interfaces and Energy Conversion ZAE BAYERN Bavarian Centre for Applied Energy Research Division 1: Technology for Energy Systems and Renewable.

The Possibilities of Biological Fuel Cells. Microbial Electricity Generation Microbial fuel cells are based on the recently identified ability of microorganisms.

Microbial Fuel Cells for Renewable Energy - Characterization Study

A Discussion of Fuel Cells with particular reference to Direct Methanol Fuel Cells (DMFC’s) Outline Fuel Cell Definition Principle of operation Components:

Chapter 7 Electrochemistry 7.1 Thermodynamic Properties of Electrolyte Solutions Electrolyte Strong electrolyte Weak el ectrolyte Real electrolyte.

Chapter 18 Notes1 Chapter 18 Electrochemistry 1. review of terms; balancing redox equations 2. galvanic cell notation, relationships 3. standard reduction.

Introduction Electrocatalysts for fuel cell applications are based on Pt or Pt-alloys particles dispersed on a porous carbon support [1]. Ordered mesoporous.

Proton Exchange Membrane Fuel Cells – Fundamentals and Applications 質子交換膜燃料電池 --- 原理與應用 C. W. Lin Department of Chemical Engineering National Yunlin University.

指導教授 : 王聖璋博士演講者 : 林恩賢日期 :2011/06/08 1. Outline Introduction Experimental section Results and discussion Conclusions Future work 2.

Reporter ： Chun-Yang Hsieh Advisor ： Wen-Chang Wu Date ： 2014/3/26 1.

Section 13 Analytical Voltammetry.

Oxidation-Reduction Dr. Ron Rusay Fall 2001 © Copyright 2001 R.J. Rusay.

What is What will be UNDER THE HOOD and IN THE TANK ? DAY 3 Hydrogen By John Zavalney.

Research Advances Towards Low Cost, High Efficiency PEM Electrolysis Dr. Katherine Ayers Presented by: Larry Moulthrop NHA 2010, Long Beach, CA.

Electrochemistry Oxidation-Reduction Dr. Ron Rusay Spring 2004 © Copyright 2004 R.J. Rusay.

Fuel Cells. What is a Fuel Cell? Quite simply, a fuel cell is a device that converts chemical energy into electrical energy, water, and heat through electrochemical.

건국대학교 융합신소재공학 교수 김 화 중 1. What is Zeolite ? 3-D intracrystalline microporous alumino-silicate materials 2.

Characterization Studies on Metallic Bipolar Plates and Membrane Electrode Assembly (MEA) for (PEM) Fuel Cells by Hazem Tawfik, Ph.D., P.E. C.Mfg.E Director.

Date of download: 6/1/2016 Copyright © ASME. All rights reserved. From: High Temperature Direct Methanol Fuel Cell Based on Phosphoric Acid PBI Membrane.

Noble Metals as Catalysts Oxidation of Methanol at the anode of a DMFC Zach Cater-Cyker 4/20/2006 MS&E 410.

Screening and Analysis of Carbon additives used to improve DCA of Lead Acid Batteries Presenter: Robert Hansen, Undergraduate, Department of Materials.

Viktória B. Kovács| Fuel cells| © 2015 BMEGEENAG51 | D218 | | 1 FUEL CELLS Viktória Barbara KOVÁCS.

Zeolite을 이용한 연료전지(Fuel Cell)

Date of download: 7/3/2016 Copyright © ASME. All rights reserved. From: The Impregnating Reduction Method for Synthesis of Pt–Ru Nanoparticles and Its.

Chapter 13. Direct Methanol Fuel Cells

Fuel Cell Technology Summer School in Energy and Environmental Catalysis University of Limerick, July 2005.

Fuel Cell Fuel Cell Potassium Hydroxide Solution H2H2 O2O2 anodecathode OVERALL EQUATION ? Click on labels and ?s for further.

Dr Shangfeng Du Fuel Cells Group, School of Chemical Engineering, University of Birmingham Department of Chemistry, University of Warwick

How does a modern fuel cell work?

Catalyst coated membrane for zero-gap alkaline water electrolyzer

Presentation transcript:

Direct Methanol Fuel Cell Study on anode and cathode catalysts 曹殿学

Direct methanol fuel cells Major problems facing DMFCs Introduction Study on the anode electrocatalyst(Pt-Ru ad ) Study on the cathode electrocatalyst(Ru/Se) Acknowledgements

Direct Methanol Fuel Cell e-e- H+H+ e-e- e-e- CH 3 OH + H 2 O O 2 (air) O2O2 H2OH2O Anode PEM Cathode Load +- CO 2 H 2 O +CH 3 OH Membrane Electrode Assembly (MEA) E= -0.02V E= 1.23V E= 1.21V

Power vehicles More efficient than ICE (97% vs. 40%). Lower emission(no NO x ). Quite. Power portable electronic devices Last longer than batteries. Easy to refill.

Key Issues Hindering the Development of Practical DMFCs: Sluggish anode kinetics  a Methanol crossover  c  -- 过电势 E cel l = E  cell - (  a  +  c  ) E cell / E  cell << 100% Develop active methanol electrooxidation catalysts. Overcome methanol crossover issue.

What I have done on the study of anode (University of Alberta, Canada)

 What is the optimum surface composition? Best Pt:Ru ratio?  Hard to measure surf. comp. of nanoparticle PtRu.  10~50% Ru was reported. Best catalyst for CH 3 OH electrooxidation: PtRu nanoparticles Pt Ru

Pt HHH Ru 3+ Pt H+H+ K 2 S 2 O 8 in 4.0 M KOH Inductively Coupled Plasma- Atomic Emission Spectrometry (ICP-AES) # of Ru atom # of surf. Pt atom was measured by cyclic voltammetry(CV) Pt/Ru comp. = # of Ru atom # of surf. Pt atom

# of Deposition (n)12357 Surf. Equiv. Ru ad (Surf. Equiv. Ru ad )/n Ru Surf. Coverage ) Ru ad form a submonolayer on the substrate at each deposition. 2) Ru ad were deposited onto Pt surf and Ru ad at similar probabilities. Cao, D. X.; Bergens, S. H. Electrochimica Acta, 2003, 48,

 Ru Pt  Ru Pt REWECE Ar inAr out Pt:Ru ~ 67:33 1 M CH 3 OH 1 M H 2 SO 4

Membrane Electrode Assembly (MEA) Anode: Pt-Ru ad Cathode: Pt black Nafion  -117 Nanoparticle catalysts Nafion  ionomer

CH 3 OH H+H+ H2OH2O SO 3 - H+H+ H+H+ H2OH2O H2OH2OH2OH2OH2OH2O [CF 2 ] 2 H+H+ H+H+ H2OH2O H2OH2O SO 3 - CH 3 OH H2OH2O H+H+ Nafion  -117 Membrane

Catalyst / Water / Nafion Steel plate Nafion-117 membrane Teflon decal Painting Paint brush Teflon tape Catalyst layer Hot-Pressing (125 o C, 1500psig) Ink Preparation (sonication) Fuel Cell Hardware Membrane Electrode Assembly

T = 60 o C, Pt:Ru ~ 65:35 T = 90 o C, Pt:Ru ~ 50:50

CVs for fresh Pt-Ru ad REWECE Ar inAr out

CVs measured in fuel cells H 2 O (Ar) H 2 (H 2 O) Anode Pt-Ru ad Cathode Pt WE CE RE

Fuel Cell Stability Test Is Pt-Ru ad stable? (Ru ad might come off)

What I have done on the study of cathode (University of Illinois, USA)

Problems: Methanol crossover causes a mixed potential at cathode, increases the cathode overpotential, decreases fuel cell voltage, thereby efficiency. Solutions: 1. Methanol impermeable membrane. 2. Methanol tolerant ORR electrocatalysts. Nafion membrane CH 3 OH AnodeCathode O 2 + e - H2OH2O CH 3 OH CO 2 + e -

Activity Comparison Methanol Tolerance 旋转电极 Oxygen Reduction Reaction Ru/Se

Acknowledgements Dr. Steve Bergens Dr. Andrzej Wieckowski People: Funding: Natural Sciences and Engineering Research Council of Canada. US Army Research Office (MURI grant DAAD ).