{"id":21443,"date":"2025-10-08T23:58:49","date_gmt":"2025-10-08T23:58:49","guid":{"rendered":"https:\/\/businesstriumphs.com\/index.php\/2025\/10\/08\/altech-batteries-ltdspherical-coated-silicon-achieves-88-5-retention\/"},"modified":"2025-10-08T23:58:49","modified_gmt":"2025-10-08T23:58:49","slug":"altech-batteries-ltdspherical-coated-silicon-achieves-88-5-retention","status":"publish","type":"post","link":"https:\/\/businesstriumphs.com\/index.php\/2025\/10\/08\/altech-batteries-ltdspherical-coated-silicon-achieves-88-5-retention\/","title":{"rendered":"Altech Batteries LtdSpherical Coated Silicon Achieves 88.5% Retention"},"content":{"rendered":"<\/p>\n
Perth, Australia (ABN Newswire) \u2013 Altech Batteries Limited (ASX:ATC,OTC:ALTHF) (FRA:A3Y) (OTCMKTS:ALTHF) is pleased to announce a major advancement in its Silumina Anodes(TM) Project, achieving the strongest battery cycling performance recorded to date for its proprietary alumina-coated spherical silicon anode material. The latest results demonstrate 88.5% capacity retention after 500 charge-discharge cycles for a 5% addition of Silumina Anodes(TM) to a graphite anode, with a repeated test confirming greater than 88.0% retention at the same interval-validating both the consistency and reproducibility of the Company\u2019s process. <\/p>\n

Highlights <\/p>\n

\u2013 5% Silumina Anodes(TM)addition achieved 88.5% capacity retention after 500 cycles <\/p>\n

\u2013 Repeated testing confirmed >88.0% retention, proving reproducibility and process stability <\/p>\n

\u2013 Silicon stores ten times more lithium than graphite, boosting anode energy density <\/p>\n

\u2013 Spherical alumina-coated silicon reduces swelling induced electrode degradation <\/p>\n

\u2013 Silumina anodes deliver 500 mAh\/g initial capacity, >40% higher than that of commercial graphite anode <\/p>\n

\u2013 After 500 cycles, capacity remains 420 mAh\/g \u2013 greater than 60% of graphite-only cells <\/p>\n

\u2013 Higher anode capacity enables longer EV range, lighter packs, and improved efficiency <\/p>\n

\u2013 Saxony pilot plant producing consistent high-quality material, confirming readiness for commercial scale-up <\/p>\n

Silicon is being increasingly adopted in the battery industry because it can store nearly ten times more lithium ions per gram than graphite, offering a pathway to dramatically higher energy densities. However, this benefit has historically come at a cost: when silicon absorbs lithium during charging, it can expand by up to 300%, causing mechanical stress, particle fracture, and rapid capacity loss. <\/p>\n

Altech\u2019s achievement breaks this paradigm. The Company\u2019s alumina-coated spherical silicon particles not only deliver the inherent energy-density advantage of silicon but also sustain exceptional stability over extended cycling. Altech\u2019s technology has effectively neutralised the problem of volumetric expansion and preserved electrical integrity throughout repeated charge-discharge cycles. The result is a material that combines higher capacity and longer life-a key milestone in the global race to commercialise nextgeneration lithium-ion anodes. <\/p>\n

BENEFITS EXPLAINED <\/p>\n

In conventional lithium-ion batteries, the anode is composed almost entirely of graphite. While graphite has been a proven and reliable material for decades, its specific capacity is inherently limited to about 350 mAh\/g during initial formation cycles. Over time, as the battery is cycled repeatedly, minor structural fatigue and SEI (solid electrolyte interphase) thickening gradually reduce the number of active lithium sites. <\/p>\n

According to Altech\u2019s test results, the practical capacity of a graphite-only anode at the same test condition declines to 230-250 mAh\/g after 500 cycles. This decline constrains the total energy that can be stored in a cell, meaning that improvements in battery range and energy density must come from other components such as the cathode, packaging, or cell design \u2013 each of which offers diminishing returns. <\/p>\n

By contrast, Altech\u2019s proprietary Silumina Anodes(TM) technology introduces a carefully optimised 5 per cent silicon addition to the graphite structure. Because silicon can host nearly ten times more lithium ions per gram than graphite, even a modest percentage dramatically increases the anode\u2019s overall capacity. In testing, cells containing this 5 per cent spherical alumina-coated silicon blend recorded an initial capacity of 500 mAh\/g, representing >40 per cent improvement over standard graphite. More importantly, this enhanced performance was largely retained over long-term cycling: after 500 charge-discharge cycles, capacity remained between 420 mAh\/g \u2013 a level equivalent to the starting capacity of many currentgeneration EV batteries. <\/p>\n

The implications of this step-change are profound for the design of next-generation lithium-ion cells. With higher capacity available in the anode, cell designers can either increase total energy density or reduce battery mass and volume while maintaining range. For electric-vehicle applications, without change in battery size, this translates directly into longer driving range per charge, or smaller and lighter battery packs, and improved overall vehicle efficiency. At a system level, higher anode capacity also improves volumetric energy density \u2013 a critical parameter for portable electronics, drones, and aerospace systems where every cubic centimetre matters. <\/p>\n

A 40-50 per cent improvement at the anode typically equates to a 20-25 per cent gain in total cell energy, depending on cathode pairing. This allows battery manufacturers to deliver more watt-hours per cell, reduce the number of cells per module, and simplify battery-management systems. In stationary or grid-storage markets, the benefit is lower footprint and reduced balance-of-plant costs, enhancing competitiveness against alternative chemistries. <\/p>\n

For the broader battery industry, these results demonstrate a practical pathway to incorporate silicon \u2013 long viewed as the \u2018holy grail\u2019 of anode materials \u2013 without compromising durability or safety. Until now, most silicon-enhanced anodes have suffered from rapid capacity fade or expansion-induced electrode failure, confining their use to small-format cells or niche applications. Altech\u2019s success in maintaining graphite-like retention while doubling the specific capacity per gram opens the door for mainstream automotive adoption. <\/p>\n

HOW SILUMINA IS MADE <\/p>\n

Altech\u2019s spherisation process transforms irregular silicon particles into perfectly rounded, alumina-coated spheres that integrate seamlessly within graphite anodes. The process begins with submicron silicon powders that are uniformly coated with a nanolayer of high-purity alumina, buffering against volume expansion during lithiation. These coated particles are then spherified through a precision-controlled thermal and mechanical process that rounds their geometry (See Figure 1*). When blended into the graphite matrix, the spherical Silumina particles naturally occupy microscopic voids, where they can expand and contract freely during cycling without damaging the surrounding structure (See Figure 2*). This optimised configuration mitigates mechanical stress, maintains electrode integrity, and enhances electrical connectivity. With only a 5% addition, the design achieves >40% capacity boost while preserving exceptional cycle stability over extended use. <\/p>\n

SAXONY PILOT PLANT IN OPERATION <\/p>\n

Altech is in a race to bring its patented Silumina Anodes(TM) technology to market. To accelerate development, the Company established a fully equipped pilot plant adjacent to the proposed commercial site at Dock 3 in Saxony, Germany, to support product qualification and process optimisation. The facility is now operating smoothly, producing multiple batches of high-quality alumina-coated silicon particles that demonstrate excellent consistency with results from Altech\u2019s Perth laboratory. Several silicon sources are being trialled to assess performance, purity, and cost efficiency, ensuring robust supply-chain flexibility. <\/p>\n

SUMMARY <\/p>\n

In summary, moving from a 230-250 mAh\/g graphite-only anode after 500 cycles to a 420 mAh\/g Silumina Anodes(TM)-enhanced anode represents not just an incremental improvement but a fundamental leap in energy storage capability. It allows manufacturers to extract more power, range, and lifespan from each unit of cell volume \u2013 enabling longer-range vehicles, smaller and lighter packs, lower system costs, and reduced environmental impact. For an industry seeking to balance energy density with sustainability and safety, Altech\u2019s breakthrough provides a compelling and scalable solution poised to redefine the performance standards of lithium-ion technology. <\/p>\n

Altech Managing Director Iggy Tan said: <\/p>\n

\u2018These latest results mark a genuine breakthrough for the battery industry. Achieving 88.5% retention at 500 cycles with a 5% silicon addition confirms the stability of our Silumina Anodes(TM) process. Our team in Saxony continues to deliver highly consistent results, validating the technology and scaling methods. <\/p>\n

Altech\u2019s breakthrough positions us at the forefront of next-generation anode materials, unlocking longerlasting, higher-capacity lithium-ion batteries.\u2019 <\/p>\n

*To view tables and figures, please visit:
https:\/\/abnnewswire.net\/lnk\/1S9132NJ <\/p>\n

About Altech Batteries Ltd: <\/p>\n

Altech Batteries Limited (ASX:ATC,OTC:ALTHF) (FRA:A3Y) is a specialty battery technology company that has a joint venture agreement with world leading German battery institute Fraunhofer IKTS (\u2018Fraunhofer\u2019) to commercialise the revolutionary CERENERGY(R) Sodium Alumina Solid State (SAS) Battery. CERENERGY(R) batteries are the game-changing alternative to lithium-ion batteries. CERENERGY(R) batteries are fire and explosion-proof; have a life span of more than 15 years and operate in extreme cold and desert climates. The battery technology uses table salt and is lithium-free; cobalt-free; graphite-free; and copper-free, eliminating exposure to critical metal price rises and supply chain concerns. <\/p>\n

The joint venture is commercialising its CERENERGY(R) battery, with plans to construct a 100MWh production facility on Altech\u2019s land in Saxony, Germany. The facility intends to produce CERENERGY(R) battery modules to provide grid storage solutions to the market. <\/p>\n

Source:
Altech Batteries Ltd <\/p>\n

Contact:
Corporate
Iggy Tan
Managing Director
Altech Batteries Limited
Tel: +61-8-6168-1555
Email: info@altechgroup.com <\/p>\n

Martin Stein
Chief Financial Officer
Altech Batteries Limited
Tel: +61-8-6168-1555
Email: info@altechgroup.com <\/p>\n<\/p>\n<\/div>\n

News Provided by ABN Newswire via QuoteMedia<\/p>\n<\/p>\n

This post appeared first on investingnews.com<\/div>\n","protected":false},"excerpt":{"rendered":"

Perth, Australia (ABN Newswire) \u2013 Altech Batteries Limited (ASX:ATC,OTC:ALTHF) (FRA:A3Y) (OTCMKTS:ALTHF) is pleased to announce a major advancement in its Silumina Anodes(TM) Project, achieving the strongest battery cycling performance recorded to date for its proprietary alumina-coated spherical silicon anode material. The latest results demonstrate 88.5% capacity retention after 500 charge-discharge cycles for a 5% addition […]<\/p>\n","protected":false},"author":0,"featured_media":21444,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-21443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-investing"],"_links":{"self":[{"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/posts\/21443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/comments?post=21443"}],"version-history":[{"count":0,"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/posts\/21443\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/media\/21444"}],"wp:attachment":[{"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/media?parent=21443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/categories?post=21443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/businesstriumphs.com\/index.php\/wp-json\/wp\/v2\/tags?post=21443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}