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This content will become publicly available on February 20, 2019

Title: Fully printed and integrated electrolyzer cells with additive manufacturing for high-efficiency water splitting

Using additive manufacturing (AM) technology, a fundamental material and structure innovation was proposed to significantly increase the energy efficiency, and to reduce the weight, volume and component quantity of proton exchange membrane electrolyzer cells (PEMECs). Four conventional parts (liquid/gas diffusion layer, bipolar plate, gasket, and current distributor) in a PEMEC were integrated into one multifunctional AM plate without committing to tools or molds for the first time. In addition, since the interfacial contact resistances between those parts were eliminated, the comprehensive in-situ characterizations of AM cells showed that an excellent energy efficiency of up to 86.48% was achieved at 2 A/cm2 and 80 degrees C, and the hydrogen generation rate was increased by 61.81% compared to the conventional cell. More importantly, the highly complex inner structures of the AM integrated multifunctional plates also exhibit the potential to break limitations of conventional manufacture methods for hydrogen generation and to open a door for the development of other energy conversion devices, including fuel cells, solar cells and batteries.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [2] ;  [1]
  1. Univ. of Tennessee Space Inst. (UTSI), Tullahoma, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States). National Center for Photovoltaics
Publication Date:
Report Number(s):
NREL/JA-4A00-71060
Journal ID: ISSN 0306-2619
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
Applied Energy
Additional Journal Information:
Journal Volume: 215; Journal Issue: C; Journal ID: ISSN 0306-2619
Publisher:
Elsevier
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office (EE-5A)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; multifunctional materials; 3D printing; additive manufacturing; integrated electrolyzer cell; proton exchange membrane; electrolyzer cells; water splitting; hydrogen energy
OSTI Identifier:
1424892