Leclanché achieves a significant breakthrough in the safety of its lithium-ion battery technology without compromising cell performance


Leclanché SA / Keyword(s): Miscellaneous
Leclanché SA: Leclanché achieves a significant breakthrough in the safety of its lithium-ion battery technology without compromising cell performance
28.06.2022 / 06:55

Leclanché achieves a significant breakthrough in the safety of its lithium-ion battery technology without compromising cell performance

  • Company achieves almost 80% reduction in fire risk with no impact on cell performance

  • Independent nail penetration testing confirms significantly reduced risk of thermal events with fire

  • Non-flammable electrolyte additive provides enhanced cell safety option for rail, truck and bus markets

YVERDON-LES-BAINS, Switzerland and ANDERSON, Indiana, 28e June 2022 – Leclanché (SIX:LECN) has achieved a significant breakthrough in the safety of its lithium-ion batteries without compromising cell performance.

By adding a special flame retardant additive to the composition of its electrolyte formula, Leclanché has reduced the risk of a thermal event by almost 80%. The feat was validated by Intertek Germany, a renowned third-party testing lab that conducted a series of industry-standard nail penetration tests on Leclanché’s 60Ah cell. Although the test cells were punctured with the resulting internal short circuit, the cells had a much lower fire hazard than the same cells without the flame retardant additives.

Non-flammable lithium-ion cells have major implications for users in the rail, truck and bus markets, who are accelerating their investments in hybrid and all-electric fleets and who are concerned about the risk of fire with passengers on board. Lithium-ion battery recalls are a costly problem, not to mention the disruption they cause to operations. Leclanché is one of the world leaders in energy storage solutions.

“As the battery industry as a whole continues to invest significant R&D resources in the development of solid-state batteries, there is a critical need to improve the safety of current lithium-ion cell technology. at high energy density. Most efforts, so far, negatively impact cell performance or longevity. Leclanché was able to develop a high performance, high energy density lithium-ion cell with high safety features without any negative impact on performance or longevity. As technological advances continue to be developed, this is a crucial improvement in cutting-edge cellular technology, which does not require breakthrough technology that could still take several years to come to market. » said Pierre Blanc, Chief Technology Officer, Leclanché.

Non-flammable electrolytes: the outgrowth of Leclanché’s water-based manufacturing process

Leclanché battery cells are manufactured by Leclanché at its production facility located in Willstätt, Germany. The cells are manufactured using the company’s proprietary production process. Electrodes are manufactured using a water-based process that has been validated in commercial production for the past 10 years – rather than using organic solvents such as NMP – resulting in a significantly reduced environmental impact and a lower carbon footprint. The Leclanché electrodes produced with the water-based manufacturing steps exhibit high stability against the flame retardant additives contained in the new electrolyte, helping to maintain cell performance.

According to Anil Srivastava, CEO of Leclanché, Our breakthrough should encourage manufacturers who are waiting on the sidelines for next-generation solid-state batteries to move forward with their advanced fleet vehicle designs today – safe lithium-ion batteries have arrived and Leclanché has delivered them. .

The company’s new non-flammable cells will be available for production starting in the first quarter of 2023. For more information, contact [email protected] or visit www.leclanché.com.

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About Leclanché

Based in Switzerland, Leclanché SA is a leading global provider of high-quality energy storage solutions designed to accelerate our progress towards a clean energy future. Leclanché’s history and heritage is rooted in over 100 years of battery and energy storage innovation. This, coupled with the culture of German engineering and Swiss precision and quality, continues to make Leclanché the partner of choice for disruptors, established companies and governments who are at the forefront of positive change. in how energy is produced, distributed and consumed around the world. The energy transition first and foremost involves changing the management of our electricity networks and the electrification of transport, these two end markets constituting the backbone of our strategy and our economic model. Leclanché is at the heart of the convergence of transport electrification and changes in the distribution network. Leclanché is organized into three business units: energy storage solutions, e-Mobility solutions and specialized battery systems. Leclanché is listed on the Swiss Stock Exchange (SIX: LECN).

SIX Swiss Exchange: stock symbol LECN | ISIN CH 011 030 311 9


This press release contains certain forward-looking statements relating to Leclanché’s business, which may be identified by terms such as “strategic”, “proposed”, “to introduce”, “will”, “planned”, “expected”, ” commitment”, “anticipates”, “fixes”, “prepares”, “plans”, “estimates”, “aims”, “could”, “potential”, “pending”, “estimated”, “proposal”, or similar expressions, or by express or implied discussions regarding the ramp-up of Leclanché’s production capacity, potential applications for existing products, or regarding potential future revenues from such products, or potential future sales or profits of Leclanché or one of its business units. You should not place undue reliance on these statements. These forward-looking statements reflect Leclanché’s current beliefs regarding future events and involve known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from any future results, performance or achievements expressed or implied by these statements. There can be no guarantee that Leclanché’s products will achieve any particular revenue levels. Nor can there be any guarantee that Leclanché, or any of the business units, will achieve any particular financial results.

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