Electric double layer capacitor
AssigneesMasaki Yoshio, Tpr Co., Ltd., Toc Capacitor Co., Ltd.
InventorsNaoya KOBAYASHI, Masaki YOSHIO
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Abstract
This electric double layer capacitor is an electric double layer capacitor capable of maintaining a discharge capacity retention rate of 80% or more in a constant current and constant voltage continuous charge test at 60° C. and 3.5 V for 1,000 hours or more, wherein a positive electrode includes graphite as a positive-electrode active material, a current collector on the positive electrode side is an aluminum material, the aluminum material is coated with an amorphous carbon film, and the amorphous carbon film has a thickness in the range from 60 nm or more to 300 nm or less.
Claims8
An electric double layer capacitor capable of maintaining a discharge capacity retention rate of 80% or more in a constant current and constant voltage continuous charge test at 60° C. and 3.5 V for 1,000 hours or more, wherein
- a positive electrode comprises graphite as a positive electrode active material,
- a current collector on the positive electrode side is an aluminum material,
- the aluminum material is coated with an amorphous carbon film, and
- the amorphous carbon film has a thickness in a range from 60 nm or more to 300 nm or less.
Dependencies are inferred from the claim text.