Engineering & Materials Science
Plug-in hybrid vehicles
100%
Conservation
74%
Renewable energy resources
62%
Hydrogen
61%
Solar energy
54%
Electric vehicles
31%
Lithium-ion batteries
27%
Sun
26%
X rays
23%
Battery electric vehicles
21%
Byproducts
17%
Fossil fuels
16%
Atmospheric humidity
15%
Fuel cells
15%
Photoelectron spectroscopy
14%
Durability
13%
Photosynthesis
13%
Students
12%
Electricity
12%
Cyclic voltammetry
12%
Regenerative braking
11%
Oil spills
11%
Energy security
10%
Electrochemical impedance spectroscopy
10%
Battery storage
10%
Battery Pack
10%
Global warming
9%
Spectroscopy
9%
Proton exchange membrane fuel cells (PEMFC)
9%
Air
9%
Electric motors
9%
Water
9%
Diffraction
9%
Microgrids
8%
Electrolytes
8%
Energy storage
7%
Failure modes
7%
Life cycle
7%
Electric power systems
7%
Temperature
6%
Electrodes
6%
Health
6%
Specifications
5%
Oils
5%
Engines
5%