NDLI: Designing Micro Fuel Cells for Portable Products

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Flipsen, Bas
Copyright Year	2009
Abstract	The main driving force in developments of consumer electronics, such as cell phones and laptop computers, is longer run times and more functionality. In this quest for higher energy densities battery characteristics improve at a constant pace. Fuel cells seem to be the next big technology breakthrough improving energy density with a factor 3 to 10 compared to current lithium ion batteries. In particular the Direct Methanol Fuel Cell (DMFC) is an interesting opportunity because of the high energy capacity of methanol and the handling of the fuel making ‘charging’ easy, safe and fast. To get information on the different aspects that determine the boundaries of the DMFC power source, a power source for a MP3 player, the Samsung YP-Z5F, is designed. This design is based on a DMFC plus battery (DMFC hybrid) and utilizes standard available components [1]. Design of a DMFC hybrid power source in a conventional way (standard practice engineering) will not result in a smaller power source for this particular application. The design has a power and energy density lower than the currently available lithium polymer battery, mainly because of the low fuel efficiency of the cell at low temperatures, the use of commercially available but still too bulky components, and a large amount of dead space (≈34%). There are three ways to increase power and energy density of the system. First by increasing the fuel-efficiency of the cells membrane. Second by scaling down the system components to the right proportions and third by improving the systems architecture diminishing empty space. This paper presents the design of a DMFC hybrid with scaled-down components. A literature study is done on the efficiency improvements of DMFC cells. The results are presented in a CAD model and evaluated, comparing the ‘optimized design’ with ‘standard practice’ design and the current lithium-polymer battery. The energy density of the redesigned fuel-cell system is still low compared to the used lithium-polymer battery, but an improvement to the preliminary design.
Sponsorship	Advanced Energy Systems Division
Starting Page	73
Ending Page	83
Page Count	11
File Format	PDF
ISBN	9780791848814
DOI	10.1115/FuelCell2009-85110
e-ISBN	9780791838471
Conference Proceedings	ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology
Language	English
Publisher Date	2009-06-08
Publisher Place	Newport Beach, California, USA
Access Restriction	Subscribed
Subject Keyword	System architecture Membranes Electronics Lithium Batteries Computer-aided design Fuels Density Design Lithium-ion batteries Direct methanol fuel cells Fuel efficiency Laptop computers Fuel cells Hybrid power systems Micro fuel cells Polymers Low temperature Methanol
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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