Ultrafine hydrogen storage powders
- Ames, IA
- Doylestown, PA
- La Mesa, CA
- Pasadena, CA
- Arcadia, CA
A method of making hydrogen storage powder resistant to fracture in service involves forming a melt having the appropriate composition for the hydrogen storage material, such, for example, LaNi.sub.5 and other AB.sub.5 type materials and AB.sub.5+x materials, where x is from about -2.5 to about +2.5, including x=0, and the melt is gas atomized under conditions of melt temperature and atomizing gas pressure to form generally spherical powder particles. The hydrogen storage powder exhibits improved chemcial homogeneity as a result of rapid solidfication from the melt and small particle size that is more resistant to microcracking during hydrogen absorption/desorption cycling. A hydrogen storage component, such as an electrode for a battery or electrochemical fuel cell, made from the gas atomized hydrogen storage material is resistant to hydrogen degradation upon hydrogen absorption/desorption that occurs for example, during charging/discharging of a battery. Such hydrogen storage components can be made by consolidating and optionally sintering the gas atomized hydrogen storage powder or alternately by shaping the gas atomized powder and a suitable binder to a desired configuration in a mold or die.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- DOE Contract Number:
- W-7405-ENG-82
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA); California Institute of Technology (Pasadena, CA)
- Patent Number(s):
- US 6074453
- Application Number:
- 08/959,167
- OSTI ID:
- 873032
- Country of Publication:
- United States
- Language:
- English
Similar Records
Benefits of rapid solidification processing of modified LaNi{sub 5} alloys by high pressure gas atomization for battery applications
Benefits of rapid solidification processing of modified LaNi{sub 5} alloys by high pressure gas atomization for battery applications
Related Subjects
hydrogen
storage
powders
method
powder
resistant
fracture
service
involves
forming
melt
appropriate
composition
material
example
lani
type
materials
-2
including
gas
atomized
conditions
temperature
atomizing
pressure
form
spherical
particles
exhibits
improved
chemcial
homogeneity
result
rapid
solidfication
particle
size
microcracking
absorption
desorption
cycling
component
electrode
battery
electrochemical
fuel
cell
degradation
occurs
charging
discharging
components
consolidating
optionally
sintering
alternately
shaping
suitable
binder
desired
configuration
mold
die
electrochemical fuel
melt temperature
fuel cell
atomized powder
gas atomized
particle size
gas pressure
hydrogen storage
powder particles
involves forming
atomizing gas
desired configuration
storage material
storage powder
suitable binder
exhibits improved
hydrogen absorption
spherical powder
type materials
chemical fuel
type material
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