Abstract:

The fuel cell stacks from domestic suppliers and international suppliers were compared to develop
a durable and reliable fuel cell system for domestic fuel cell car. The main disadvantages of the fuel cell system
from domestic suppliers were summarized as following: 1) fuel cell system having lower output power with
lower efficiency; 2) Fuel cell stack having lower power density; and 3) Air compressor development lag behind.
Therefore, research and development work for domestic fuel cell system should be focused on the following
aspects: 1) to enhance the fuel cell stack power output and the performance of the air compressor to greatly
improve vehicle performances by operating the fuel cell system in the high efficiency area; 2) to optimize the
system operation condition and the material properties of key components to greatly improve the stack power
density; 3) to realize operating air compressor under low pressure for low power output, and high pressure for
high power output; 4) to elevate the air compressor surge line to operate the air compressor with high efficiency
and high rotation speed.

Key words: fuel cell power system, domestic manufacturing, fuel cell stack, power density, air compressor