Energy Storage Solutions

PPM Power supplies Lithium-ion capacitors as energy storage solutions which have a hybrid structure that uses the same activated carbon as electric double layer capacitors for the positive electrode and the same carbon as Lithium-ion batteries for the negative electrode.

Due to the structure and advanced pre-doping technology, it has resulted in performance that combines the advantages of both at a high energy density, high output density and rapid charging and discharging and a variety of application uses whilst ensuring high safety.

Our Lithium-ion Prismatic products offer an opportunity to drive down costs by diminishing the number of manufacturing steps, reduce weight and costs whilst optimising packaging efficiency and applications.

Configuration and characteristics of various electric storage devices

Comparison of characteristics of various electric storage devices

	Lithium-ion Capacitor	Electrical Double Layer Capacitor	Lithium-ion Battery	Lead Acid Battery
Energy density	Medium (Higher at higher current)	Low	Very high	High
Power density	High	High	Low (No good for rapid charge)	Very low
Rapid charge / discharge	In seconds	In seconds	In hours (Needs a charge control)	In hours (Needs a refreshing charge)
Internal resistance	Low	Low	High	Very high
Low temperature performance	Good	Good	Very bad	Bad
High temperature performance	Very good (Up to 70℃)	Good (Up to 60℃)	Very bad (Up to 40℃)	Very bad
Self-discharge	Small	Big	Small	Big
Maintenance	Maintenance free	Maintenance free	Frequent replacement required	Frequent replacement required
Lifetime (float / cycling)	Long	Long	Relatively short	Short (Sudden death occurs)
Safety & flammability	High, flammable	High, flammable	Low, flammable (Self-heat up / igniting)	High, not flammable
Application	Very high power (Medium energy)	Very high power (Low energy)	Medium power (High energy)	Low power (High energy)