Classification
ESB - Hydrogen energy
250
CXX - Hydrogen production - chemistry and technology
37
ETF - Fuel cells - general
26
EWA - Energy economy
12
TKJ - Traffic
12
UHK - Traffic and environment - incl. automobile exhaust gas
10
CXXE - Thermal and photochemical hydrogen production
9
FMXG - Metal hydrogen systems - specific aspects, specific systems
9
CXXL - Electrochemical hydrogen production
8
ETC - Energy conversion
7
ETA - Energy storage
6
CLE - Combustion, flames, explosions
4
CNW - Electrochemical energy production and conversion
4
EHA - Renewable energy sources
3
EVB - Energy supply of Germany
3
CXRU - Synthetic fuels
2
EXA - Energy policy
2
TIG - Reliability, safety, quality control
2
CAU - Laboratory and safety engineering in chemistry
1
CLJ - Catalyst materials
1
CLM - Catalytic processes
1
CLPS - Organic colloids, membranes
1
CNE - Electrochemistry
1
CNWK - Electric batteries
1
CWSW - Membrane separation process
1
EBA - Energy production, energy technology
1
ENA - Energy from biomass and waste
1
ETFG - Polymer electrolyte membrane fuel cells ( PEMFC )
1
FGN - Nanotechnology
1
FLB - Quantum liquids, quantum crystals
1
LTO - Biotechnology - application, industry
1
LTT - Enzyme technology, protein engineering
1
LTX - Bioeconomy
1
PCA - Thermodynamics
1
PGN - Fusion technology, plasma devices
1
TBW - Sensors, actuators
1
TKF - Power plants
1
TNB - Nuclear power plants
1
UCQ - Environmental technology
1
UCS - Environmental chemistry
1
YFF - Industrial safety regulations
1