H, H2 hydrogen
H2 A Hydrogen Technology (model)
HC hydrocarbon
HCCI homogeneous charge compression ignition
HEV hybrid electric vehicle
HFCTP Hydrogen and Fuel Cell Technologies Program
HFCV hydrogen fuel cell vehicle
HHV higher heating value
HTML high-temperature materials laboratory

ICE internal combustion engine
IEEE Institute of Electrical and Electronics Engineers
IP intellectual property
ISO International Organization for Standardization

JCAP Joint Center for Artificial Photosynthesis

kg kilogram
kHz kilohertz
kW kilowatt
kWe kilowatt (electric)
kWh kilowatt-hour

LANL Los Alamos National Laboratory
LBNL Lawrence Berkeley National Laboratory
LDV light-duty vehicle
Li-ion lithium-ion
LLNL Lawrence Livermore National Laboratory
LNG liquefied natural gas
LTC low-temperature combustion

MEA membrane electrode assembly
Mg magnesium
MOF metal organic framework
MPa megapascal
mpg miles per gallon
MTT materials technical team
MY model year

NAE National Academy of Engineering
NAS National Academy of Sciences
NASA National Aeronautics and Space Administration
NE Nuclear Energy (Office of; DOE)


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