skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Microwatt Fuel Cell for Long-Term and Wide Ambient Temperature Range Operation

Abstract

A small microwatt fuel cell stack and system was designed, fabricated, and tested for passive operation with pure H 2 and O 2 to provide continuous power for multiple decades with uncontrolled fluctuating ambient conditions. The stack was designed to operate with dead ended gas flows with water removal via passive membrane diffusion to notches in the bipolar plates. Additional requirements for decades long operation is minimizing H 2 and O 2 consumption, specifically membrane cross-over; to minimize cross-over, stacks were built with layered membranes of 100 µm and 400 µm. Here, the stack spatial water concentration level was monitored during operation by in situ neutron imaging to evaluate the passive water management design. Operation was verified by testing at temperatures ranging from -55 °C to 80 °C, including periodic pulses in power.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [2];  [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
OSTI Identifier:
1542828
Report Number(s):
LA-UR-18-26434
Journal ID: ISSN 1938-6737
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
ECS Transactions (Online)
Additional Journal Information:
Journal Name: ECS Transactions (Online); Journal Volume: 86; Journal Issue: 13; Journal ID: ISSN 1938-6737
Publisher:
Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 30 DIRECT ENERGY CONVERSION; Fuel Cell; microwatt

Citation Formats

Chintam, Kavitha, Wilson, Mahlon Scott, Rockward, Tommy, Stariha, Sarah, Baker, Andrew M., Brosha, Eric Lanich, Hussey, Daniel S., LaManna, Jacob M., Jacobson, David L., Rau, Jon A., and Borup, Rod L. Microwatt Fuel Cell for Long-Term and Wide Ambient Temperature Range Operation. United States: N. p., 2018. Web. doi:10.1149/08613.0233ecst.
Chintam, Kavitha, Wilson, Mahlon Scott, Rockward, Tommy, Stariha, Sarah, Baker, Andrew M., Brosha, Eric Lanich, Hussey, Daniel S., LaManna, Jacob M., Jacobson, David L., Rau, Jon A., & Borup, Rod L. Microwatt Fuel Cell for Long-Term and Wide Ambient Temperature Range Operation. United States. doi:10.1149/08613.0233ecst.
Chintam, Kavitha, Wilson, Mahlon Scott, Rockward, Tommy, Stariha, Sarah, Baker, Andrew M., Brosha, Eric Lanich, Hussey, Daniel S., LaManna, Jacob M., Jacobson, David L., Rau, Jon A., and Borup, Rod L. Mon . "Microwatt Fuel Cell for Long-Term and Wide Ambient Temperature Range Operation". United States. doi:10.1149/08613.0233ecst. https://www.osti.gov/servlets/purl/1542828.
@article{osti_1542828,
title = {Microwatt Fuel Cell for Long-Term and Wide Ambient Temperature Range Operation},
author = {Chintam, Kavitha and Wilson, Mahlon Scott and Rockward, Tommy and Stariha, Sarah and Baker, Andrew M. and Brosha, Eric Lanich and Hussey, Daniel S. and LaManna, Jacob M. and Jacobson, David L. and Rau, Jon A. and Borup, Rod L.},
abstractNote = {A small microwatt fuel cell stack and system was designed, fabricated, and tested for passive operation with pure H2 and O2 to provide continuous power for multiple decades with uncontrolled fluctuating ambient conditions. The stack was designed to operate with dead ended gas flows with water removal via passive membrane diffusion to notches in the bipolar plates. Additional requirements for decades long operation is minimizing H2 and O2 consumption, specifically membrane cross-over; to minimize cross-over, stacks were built with layered membranes of 100 µm and 400 µm. Here, the stack spatial water concentration level was monitored during operation by in situ neutron imaging to evaluate the passive water management design. Operation was verified by testing at temperatures ranging from -55 °C to 80 °C, including periodic pulses in power.},
doi = {10.1149/08613.0233ecst},
journal = {ECS Transactions (Online)},
number = 13,
volume = 86,
place = {United States},
year = {2018},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share: