Sony Energy Devices Quality

Laminate-type Lithium-ion Polymer Battery

In general, lithium-ion rechargeable batteries are divided into either laminate or metal can types based on the composition of their external packaging.
Laminate types are further divided into 2 categories according to the electrolytes found inside.
A feature of Sony’s lithium-ion batteries is the use of gel polymers*1 with its electrolytes.

Laminate-type Lithium-ion Batteries

Laminate-type Lithium-ion Batteries

*1: Electrolytes are locked within the polymer and kept in a semisolid state

Achieve greater flexibility in battery size with laminate film external packaging

For metal can types, it is necessary to mold a casing for the external packaging. When the packaging is laminate,
on the other hand, this step is unnecessary, thereby eliminating lead times resulting from the molding process or related adjustments.
The concept behind laminate packaging is to deliver the customer’s desired size as quickly as possible.

Thinner, higher capacity batteries made possible by gel electrolytes

By eliminating the metal can package, restrictions related to battery thickness are also removed.
Moreover as gel electrolytes are resistant to swelling, it is possible to maximize the device’s internal battery space with the resulting increases in capacity.
This is the essence of Sony’s polymer batteries.

The Superior Quality of Gel Polymers: Increased Capacity/Longer Life

High Capacity・Thinner Body/Size Diversity・Exceptional Safety・Long Life Cycle

The Long-lasting Lithium-ion Battery ‘fORTELION

With a cathode composed of olivine-type iron phosphate, Sony’s ‘fortelion※1is a lithium-ion rechargeable battery with a running life of over 20 years*2 and an exceptionally high level of safety.

The Superior Qualities of Olivine Cells

Lifespan/A lifespan of 20 years when used indoors Safety/No release of oxygen→No thermal runaway

*1‘fORTELION’ is a trademark of Sony Corporation

*2 When kept at room temperature (23℃) and charged/discharged once daily

The Solid Crystalline Structure of Olivine-type Lithium Iron Phosphate

In olivine-type lithium iron phosphate all the oxygen forms a covalent bond with the phosphate to create a solid (P04)3- polyaniline.
As a result, it is an incredibly stable substance with a highly resilient crystalline structure. Even at high temperatures, it does not release oxygen, making it safe in extreme conditions, and its stable structure allows it to maintain its battery functions over an extended period of time. Renowned for its long life and safety, this is Sony’s
fORTELION*1 olivine battery.

*1 ‘fORTELION’ is a trademark of Sony Corporation

The Solid Crystalline Structure of Olivine-type Lithium Iron Phosphate

The Solid Crystalline Structure of Olivine-type Lithium Iron Phosphate


The First in the World to Achieve Silver Oxide/Alkaline Button Batteries with 0% Mercury

In conventional silver oxide and alkaline button batteries, mercury has been added to the anode in order to control battery swelling resulting from the emission of gas.

Conventional Mercury-containing Batteries

Conventional Mercury-containing Batteries Mercury suppresses gas emissions⇒Mercury Removal without Modification/In the absence of mercury gas is released

The Realization of 0% Mercury through New Sony Technology0% MERCURY

‘Gas Suppression Effect (Block System 1)’

In place of conventional gas emission suppression mechanisms employing mercury, Sony has developed its own original gas-suppressing technology using corrosion-inhibiting, high performance zinc alloy powder and an anode current collector with a special corrosion-proof finish to achieve a silver oxide battery with 0% mercury.

‘Gas Absorption Effect (Block System 2)’

In addition to its silver oxide battery technology, Sony has adopted original technology that mixes gas-absorbing material with the cathode to realize 0% mercury in its alkaline button batteries as well. Sony has eliminated the use of mercury in its entire lineup of button/coin type batteries while still achieving performance equal to or greater than that of conventional batteries.

New Sony Technology: Gas Suppression Effect (Block System 1), Gas Absorption Effect (Block System 2)

New Sony Technology:Gas Suppression Effect (Block System 1), Gas Absorption Effect (Block System 2) the world's first.*

*A Sony study

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