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Primary Lithium Batteries
Battery Structure
High-power cylindrical type lithium batteries are capable of
producing a very high discharge current due to their spiral electrode
structure. High-capacity cylindrical type lithium batteries have a
bobbin structure which contains active material and can provide a
high capacity.
In addition, the laser sealing technology ensures long-term
reliability and a battery life of up to 10 years at room temperature.
Applying an original manufacturing process, Sanyo uses a manganese dioxide compound as the active material for the positive electrode
(cathode). Lithium is used for the negative electrode (anode) to produce a cell with high voltage and high energy density. In addition, an
organic electrolyte is employed to which lithium salts are added.
The discharge reaction of lithium batteries is as follows:
Anode reaction: Li Li e
Cathode reaction: Mn O2 Li e Mn O2 (Li )
Overall battery reaction: Mn O
2
Li Mn O
2 (Li
)
The cell voltage is approximately 3V.
Sanyo manganese dioxide primary lithium batteries, developed in 1976, feature high energy density.
Because they offer many unique features not found in either convetional dry cells or silver oxide
batteries, Sanyo lithium batteries are currently used in a wide range of equipment such as electronic
calculators, watches and cameras. In addition, they are used as a memory backup power source in
microcomputer-controlled devices. By offering a wide range of lithium batteries, from coin cells to
high-power cylindrical type cells (spiral structure) and high-capacity cylindrical type cells (bobbin
structure), Sanyo has been able to meet the demands of a large and diversified market.
Sanyo is acquiring International Regulation ISO9001 approval which is a quality guarantee. Sanyo
continues to implement thorough quality control.
Manganese Dioxide Primary Lithium Batteries (CR series)
Principles and Structure of Primary Lithium Batteries
Coin Type Primary Lithium Batteries (crimp-sealing)
High-capacity (bobbin structure)
Laser-sealing
High-power (spiral structure)
Crimp-sealing Laser-sealing
Cylindrical Type Primary Lithium Batteries