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- Talnode-C natural graphite anode integrated into KRI’s ultra-long-life Li-ion cells
- Achieves over 8,000 cycles in testing, approximately five times the lifespan of conventional cells
- Longer cycle life can maximise value of battery power in high-utilisation applications
- Pilot samples are with KRI’s customer evaluation program now
Talga Group (ASX: TLG) has achieved a significant breakthrough with its Talnode-C natural graphite anode demonstrating “excellent” performance supporting a revolutionary ultra-long-life Li-ion battery developed by KRI Inc.
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KRI, a wholly-owned subsidiary of Osaka Gas, has achieved over 8,000 cycles to 75% capacity retention, approximately five times the cycle life of a conventional Li-ion cell, with an estimated potential for around one million km cumulative driving range in electric vehicles, while dramatically extending service life in battery energy storage systems.
The exceptional cycle-life performance is enabled by KRI’s advanced battery cell design, achieving more uniform electrode reactions over time. Talga Group MD, Mark Thompson, said Talnode-C has shown excellent performance in this cell design, with its low-resistance graphite providing the stability, homogeneity and rate capability required, with lower environmental impact.
“Talnode-C’s performance in KRI’s ultra-long-life battery is a strong validation of its potential in high-growth mobility and energy storage markets. A five-fold increase in battery lifespan improves economics, reduces battery replacements and lowers emissions, addressing major pain points for sector leaders.
“Natural graphite rarely, if ever, achieves this lifespan. KRI’s results show that Talga’s highly crystalline, homogenous small-flake graphite, used optimally, can outperform synthetic graphite and deliver less reactivity and greater stability over long lifecycles.”
KRI has identified non-uniform electrode reactions as a major cause of Li-ion battery degradation. Under fast charging, cold temperatures or as a cell ages, some parts of an electrode work harder than others. Once a cell’s “critical load point” is exceeded, secondary degradation such as lithium plating and gas generation follows, accelerating capacity fade.
KRI’s solution optimises cell components such as the electrodes, active materials, electrolyte and separator to promote Li-ion transport and reaction uniformity.
Talnode-C is a coated spherical purified natural graphite produced by Talga from its Swedish graphite resources using renewable energy and wholly owned process technology, giving a low emissions footprint, competitive cost and defense-grade supply chain resilience.
In KRI’s evaluation, the smaller, highly crystalline and homogeneous natural graphite particles of Talnode-C, when used in an optimised electrode, have shown low reactivity and high stability throughout the anode, contributing to very long cycle life.
TLG was steady at 21.0¢ with a Mkt cap of $104.7M prior to markets opening.
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