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Title: Low-Cost alpha Alane for Hydrogen Storage

Abstract

This project was directed towards the further development of the Savannah River National Laboratory (SRNL) lab-scale electrochemical synthesis of the hydrogen storage material alpha-alane and Ardica Technologies-SRI International (SRI) chemical downstream processes that are necessary to meet DoE cost metrics and transition alpha-alane synthesis to an industrial scale. Ardica has demonstrated the use of alpha-alane in a fuel-cell system for the U.S. Army WFC20 20W soldier power system that has successfully passed initial field trials with individual soldiers. While alpha-alane has been clearly identified as a desirable hydrogen storage material, cost-effective means for its production and regeneration on a scale of use applicable to the industry have yet to be established. We focused on three, principal development areas: 1. The construction of a comprehensive engineering techno-economic model to establish the production costs of alpha-alane by both electrochemical and chemical routes at scale. 2. The identification of critical, cost-saving design elements of the electrochemical cell and the quantification of the product yields of the primary electrochemical process. A moving particle-bed reactor design was constructed and operated. 3. The experimental quantification of the product yields of candidate downstream chemical processes necessary to produce alpha-alane to complete the most cost-effective overall manufacturing process.more » Our techno-economic model shows that under key assumptions most 2015 and 2020 DOE hydrogen storage system cost targets for low and medium power can be achieved using the electrochemical alane synthesis process. To meet the most aggressive 2020 storage system cost target, $1/g, our model indicates that 420 metric tons per year (MT/y) production of alpha-alane is required. Laboratory-scale experimental work demonstrated that the yields of two of the three critical component steps within the overall “electrochemical process” were sufficiently high to meet this production target. In the case of the yield of the third step, the crystallization of alpha-alane from the primary alane-related product of the electrochemical reaction, further development is required.« less

Authors:
 [1];  [2];  [2];  [2]
  1. Ardica Technologies, San Francisco, CA (United States)
  2. SRI International, Menlo Park, CA (United States)
Publication Date:
Research Org.:
Ardica Technologies, San Francisco, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Savannah River National Laboratory (SRNL)
OSTI Identifier:
1398788
Report Number(s):
DOE-ARDICA-0006629
DOE Contract Number:
EE0006629
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN

Citation Formats

Fabian, Tibor, Petrie, Mark, Crouch-Baker, Steven, and Fong, Henry. Low-Cost alpha Alane for Hydrogen Storage. United States: N. p., 2017. Web. doi:10.2172/1398788.
Fabian, Tibor, Petrie, Mark, Crouch-Baker, Steven, & Fong, Henry. Low-Cost alpha Alane for Hydrogen Storage. United States. doi:10.2172/1398788.
Fabian, Tibor, Petrie, Mark, Crouch-Baker, Steven, and Fong, Henry. Tue . "Low-Cost alpha Alane for Hydrogen Storage". United States. doi:10.2172/1398788. https://www.osti.gov/servlets/purl/1398788.
@article{osti_1398788,
title = {Low-Cost alpha Alane for Hydrogen Storage},
author = {Fabian, Tibor and Petrie, Mark and Crouch-Baker, Steven and Fong, Henry},
abstractNote = {This project was directed towards the further development of the Savannah River National Laboratory (SRNL) lab-scale electrochemical synthesis of the hydrogen storage material alpha-alane and Ardica Technologies-SRI International (SRI) chemical downstream processes that are necessary to meet DoE cost metrics and transition alpha-alane synthesis to an industrial scale. Ardica has demonstrated the use of alpha-alane in a fuel-cell system for the U.S. Army WFC20 20W soldier power system that has successfully passed initial field trials with individual soldiers. While alpha-alane has been clearly identified as a desirable hydrogen storage material, cost-effective means for its production and regeneration on a scale of use applicable to the industry have yet to be established. We focused on three, principal development areas: 1. The construction of a comprehensive engineering techno-economic model to establish the production costs of alpha-alane by both electrochemical and chemical routes at scale. 2. The identification of critical, cost-saving design elements of the electrochemical cell and the quantification of the product yields of the primary electrochemical process. A moving particle-bed reactor design was constructed and operated. 3. The experimental quantification of the product yields of candidate downstream chemical processes necessary to produce alpha-alane to complete the most cost-effective overall manufacturing process. Our techno-economic model shows that under key assumptions most 2015 and 2020 DOE hydrogen storage system cost targets for low and medium power can be achieved using the electrochemical alane synthesis process. To meet the most aggressive 2020 storage system cost target, $1/g, our model indicates that 420 metric tons per year (MT/y) production of alpha-alane is required. Laboratory-scale experimental work demonstrated that the yields of two of the three critical component steps within the overall “electrochemical process” were sufficiently high to meet this production target. In the case of the yield of the third step, the crystallization of alpha-alane from the primary alane-related product of the electrochemical reaction, further development is required.},
doi = {10.2172/1398788},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 10 00:00:00 EDT 2017},
month = {Tue Oct 10 00:00:00 EDT 2017}
}

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