As a result of a joint
research project with Powerzinc, the world-renowned
Japanese automotive company has recently shown to Powerzinc
its test result of various battery technologies &
zinc air fuel cell for the electric vehicles applications.
The test compared the key performance attributes of
Lithium-ion battery, Lithium-polymer battery, and Powerzinc¡¯s
DQFC zinc-air fuel cell at various conditions. Here
are some highlights from the report:
¡¤ Powerzinc¡¯s zinc air fuel cell has substantially
higher specific energy at 220Wh/kg
At the room temperature of 25oC degree, the specific
energy of Lithium Ion battery was 97.3Wh/kg, Lithium
Polymer battery was 77.8Wh/kg, and Powerzinc¡¯s DQFC
was the highest at 220Wh/kg (which was even higher than
Powerzinc¡¯s published 200Wh/kg data).
¡¤ Powerzinc¡¯s zinc air fuel cell has much
superior low temperature performance
The test also measured the variations of internal resistance
over a wide temperature range from -30oC to 45oC. Under
the temperature of -30oC, the internal resistance of
DQFC increased only two times, while that of Lithium-ion
battery increased 7-times and Lithium-polymer battery
increased 8-times. Low temperature performance is a
very important criterion for electric vehicles. According
to electric vehicle design standard, an increase of
7 ¨C 8 times of internal resistance at low temperature
is definitely outside the acceptable range, while an
increase of 2-times can satisfy the design requirements.
¡¤ Powerzinc¡¯s zinc air fuel cell has achieved
lower cost per KWh
The current cost of Li-ion battery is US$1140/KWh and
is projected to come down to US$360/Kwh in long-term.
However, the current cost of Powerzinc¡¯s DQFC is only
US$100/KWh and is projected to come down to US$50/KWh
in the future.
The conclusion of this phase of study is that Powerzinc¡¯s
DQFC has successfully demonstrated its superior performance
over Li-ion and Li-polymer in many areas and has the
potential to be the candidate of choice for pure electric
(For more information about the test result, please