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SILATRONIX ORGANOSILICON TECHNOLOGY

OS3 - Enabling High Performance Through Silicon Chemistry.

OS3 is the latest generation in performance enhancing materials available from Silatronix. OS3 enables extreme performance of Li-ion batteries when added to LiPF6 based battery cells in concentrations of just 2-5%.

OS3 Benefits
· Greater capacity
· Longer life
· Extended temperature ranges
· Higher charge voltage
· Safety & stability

APPLICATIONS

OS3 can be applied to numerous Li-ion applications, changing design considerations for end products. For example: Consumer electronics that utilize Li-ion pouch cells can be designed thinner with OS3 enabled batteries as cell swelling can be significantly reduced.

PRODUCTS

Products can be designed to operate reliably in higher temperature environments. Wearable devices that utilize small pouch cells can be further optimized for rugged environmental use, devices can adopt higher energy density cells providing longer battery life on a single charge in addition to longer, more reliable device performance over the life of the product.

TECHNOLOGY

Li Solvent

Eliminates fundamental salt decomposition

Replaces detrimental primary solvent interactions

Lowers charge transfer resistance

Nitrile
Functionality

Proton trapping lowers HF generation

Nitrile interaction lowers cathode metal dissolution

Improves safety through interfacial protection

Voltage
Stability

Cathodic stability allows higher voltage operationn

Anodic stability being explored for high capacity anode development

Overall voltage stability is unique in the nitrile family

Thermal
Stability

Molecule stable to highly extended temperature ranges

Lower solvent decomposition leads to improved safety

Benefits can be realized at higher operating temperatures

DOCUMENTED PERFORMANCE IMPROVEMENTS

Cell Swelling Improvement – reduction in swelling

High voltage Li-ion pouch swelling dramatically reduced during 90ºC, 4 hour test

Improvement in retained capacity

High voltage Li-ion pouch cells achieve significant improvements in retained and recovered capacity, 60ºC, 2 weeks

Improvements in cycle life

High voltage Li-ion pouch cells achieve significant increases in cycle life both at room temperature (25ºC) and high temperature (45ºC) test conditions

Li-ion Battery Electrolytes

SILANE - TECH

Liquid electrolytes in Li-ion batteries consist of a lithium salt, usually LiPF6, in an organic solvent blend of ethylene carbonate (EC) and one or more co-solvents such asdimethyl carbonate (DMC), diethyl carbonate (DEC), or ethylmethyl carbonate (EMC). Unfortunately, LiPF6 is unstable in these carbonate solvents above 60 degrees C, and at charge voltages above 4.3 volts. Operation of a Li-ion battery above these temperatures or voltages results in rapid degradation of electrode materials and battery performance. In addition, current Li-ion electrolyte solvents exhibit flashpoints around 35 degrees C, and are the major source of the energy released during an extreme Li-ion cell failure. Given these significant limitations, current electrolytes are impeding the development of advanced Li-ion batteries for all applications, including portable products, electric drive vehicles (EDVs), and utility scale use. A dramatic reduction in battery failure rate is also required for large scale Li-ion batteries to effectively serve applications in EDVs and grid storage.

Among industry leaders, there is nearly universal recognition of the need for improved electrolytes in energy storage devices such as Li-ion batteries. To respond to this opportunity, Silatronix is using the versatility of silicon chemistry to develop unique silicon-based materials for use as electrolytes.

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