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Talga reports positive test results on its graphene silicon Li-ion battery anode project.
Talga Resources has revealed new test results on the ongoing optimization of its graphene silicon Li-ion battery anode product, Talnode™- Si. According to Talga, the battery anode product returns further performance gains, now delivering ~70% more energy density than commercial graphite-only anodes.

The product reportedly provides a “drop in” solution for improving current Li-ion battery performance. Commercial samples under confidentiality and material transfer agreements are scheduled to commence delivery around the end of February 2019 - recipients are said to include some of the world’s largest electronic corporations.

Talga shared information on the test results of the optimization of Talnode-Si, with up to 15% silicon loading, which have been underway at Talga’s battery material facility in the Maxwell Centre of Cambridge University, UK. Highlights of new half cell cycling test results include:

  • ~70% higher reversible capacity (~600mAh/g) than commercial graphite (~350mAh/g)
  • Coulombic efficiency of 99.5% - 99.9% with first cycle efficiency ~ 91%
  • Up to 94% reversible capacity (after >130 cycles in a range of silicon loadings)

 

Talga Managing Director, Mr Mark Thompson: “The rapid development of our natural graphite anode products for Li-ion batteries have been extraordinary and the continued positive market response to products under development, Talnode-Si and Talnode-X, as well as our flagship product, Talnode-C, support plans for scaling up of Talnode products as part of our vertically integrated business strategy.”

Talnode-Si consists of a mixture of silicon and graphene particles engineered by Talga to be suitable for existing Li-ion battery manufacturing equipment as a high performance, cost effective and scalable replacement for standard graphite anode materials.

Development continues under the Safevolt project, a part of the £246 million UK-funded Faraday program, with Talga partners Johnson Matthey, Cambridge University and TWI. Based on the encouraging test results to date the Company has opted to progress to full cell testing and optimization of Talnode-Si.

 

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