G3 launches G3-Fireshield Technology, a graphene-based line of components for the reduction of battery fires

Global Graphene Group (G3) logo imageGlobal Graphene Group (G3), the holding company of Angstron Materials and Nanotek Instruments, has announced G3-Fireshield Technology a suite of next generation battery components to dramatically reduce the risk of fire occurrences in EVs, portable electronics, and a range of other devices.

G3 states that this breakthrough is the first of its kind to overcome the intrinsic flammability problems associated with multiple battery material components. G3 explains that a conventional Li-ion battery is made up of three primary components: a negative electrode, a separator soaked in electrolyte solution, and a positive electrode. At elevated temperatures, brought on by mechanical, electrical or thermal abuse, each of these components undergoes chemical and/or structural changes that release energy from the cell in harmful ways.

G3 has developed what it defines as a total solution to eliminate Li-ion battery fires. Acknowledging the three most susceptible components of a Li-ion battery, G3-Fireshield Technology offers a graphene-protected cathode, non-flammable electrolyte, and modified separator to achieve an unrivaled level of battery safety.

G3-Fireshield Technology features a graphene coating that is compatible with multiple cathode materials, allowing widespread adoption to improve cathode thermal stability. This is made possible by graphene’s ability to act as a barrier to unwanted oxygen release from the cathode, as well as its high thermal conductivity which promotes efficient heat dissipation from the cathode material.

Also featured is G3’s Non-Flammable Electrolyte (NFE-LP), a drop-in solution to offer current Li-ion batteries an alternative to the most energetic component of the entire system. NFE-LP is liquid-phase, and thus offers similar performance properties to what are already known in today’s electronic devices. A key advantage of this material is its compatibility with various off-the-shelf anode and cathode materials, enabling facile adoption into the cell manufacturing process.

G3’s modified separator offers protection in the event of a short-circuit and temperature increase. This material layer does not melt or shrink at elevated temperature, which is a necessary feature not offered by current polymer-based separators. Maintaining the structural stability of the separator layer is essential in preventing a complete and sudden release of energy from a Li-ion battery.

The materials comprising G3-Fireshield Technology are all commercial-ready, having reportedly undergone stringent performance evaluation tests relative to traditional Li-ion batteries. Internal results suggest that when the latter is subjected to a nail puncture test, the corresponding energy release increases the battery surface temperature upwards of 500 °C. In contrast, a prototype battery using G3-Fireshield Technology experiences negligible temperature increase (

Posted: Jun 18,2018 by Roni Peleg