SOLiTHOR tops 1000 cycles for solid state battery
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SOLiTHOR in Belgium has achieved over 1000 cycles for a 3Ah lithium metal solid-state battery for aviation and maritime applications.
Recent testing of SOLiTHOR’s pouch cells, conducted at a moderate temperature (25°C) and with external pressure below 72 psi/4.9 atm has shown 1000 full charge discharge cycles down to a capacity of 80% with a coulombic efficiency above 99.2 percent.
This marks the successful demonstration of the use of its thin proprietary first generation Solid Electrolyte when paired with thin lithium metal and high-loading NMC cathodes. This combination shows energy densities of 384 Wh/kg and 1,026 Wh/l at stack level obtained on a different set of cells. This exceeds its initial 850Wh/l target.
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As a stepping stone to real-scale technology demonstrators, SOLiTHOR has successfully manufactured 3Ah pouch cell prototypes which are currently running through its internal performance and safety testing protocols. Its short-term plan is to send those prototypes for external validation and testing with aviation and maritime partners.
The test was done to measure endurance which is a key performance criteria for long-lasting aviation and maritime applications. The result was well above the accepted commercial target with gravimetric energy values that are crucial to enable the electric transition of the aviation and maritime sectors which require lighter, safer and more powerful batteries particularly for take-off and landing.
The solid state battery technology is fully compatible with commercial cathode components manufactured today in the well-established Li-ion battery industry. This will enable the rapid industrialisation of its products in the coming years in existing Li-ion battery production lines.
“This exceptional cyclability result underpins the durability and compatibility of our innovative thin Solid Electrolyte with both thin Lithium metal and conventional cathode components. Research over many decades has sought to reach such cyclability for thin Lithium metal battery technologies and we are among the few companies to have demonstrated it in a solid-state configuration,” said Dr Fanny Bardé, CTO of SOLiTHOR.
“SOLiTHOR is in partnership with both aviation and maritime manufacturers. Aviation and Maritime vessels require high power and high energy to provide the necessary electrification to safely transport aircraft and ships over longer distances. The achievements above demonstrate our capability. One of SOLiTHOR’s long term objectives is to partner with battery manufacturers to mass produce the cells, for both our aviation and maritime clients,” said Huw Hampson-Jones, CEO of SOLiTHOR.