Silicon anode lithium-ion batteries in 2026: overview
Silicon-anode lithium-ion batteries use silicon, often blended with carbon or graphite, in place of some or all of the conventional graphite negative electrode. Silicon can store more lithium, offering a route to higher energy density, but its expansion during charging stresses particles, binders and interfaces. Repeated damage can destabilize the solid-electrolyte interphase and shorten cell life. The field is therefore focused on making silicon’s capacity usable in practical electrodes, not simply maximizing silicon content. Composite design and interface control are central to that effort.
Recent work combines material design with manufacturing routes: in September 2026, Nanjing Normal University reported converting retired photovoltaic silicon and lignin waste into silicon/carbon anodes using flash Joule heating. In August 2026, Chinese Academy of Sciences researchers reported core-shell Si@C anodes made by in-situ liquid-phase precipitation. Commercial scale-up is advancing alongside these studies: Group14 began EV-scale production of silicon anode material in South Korea in March 2026, while Nexeon received National Wealth Fund backing for UK research, development and manufacturing in September 2026. Scale-up now depends on repeatable performance, alongside capacity gains.
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- 1Stabilize the interface: Recent work on binders, electrolyte additives and engineered interphases reflects the need to limit repeated interface damage as silicon expands and contracts.
- 2Scale composite production: Group14’s EV-scale production launch in South Korea in March 2026 signals a shift from material development toward manufacturing readiness.
- 3Binders gain attention: Binder and electrode engineering activity rose 31.6%, highlighting the importance of keeping silicon particles connected through cycling.
Top organizations working on silicon anode lithium-ion batteries
Ranked by Linknovate activity score · last 24 monthsThe activity score adds up the relevance of every patent, publication, grant and news item linking an organization to silicon anode lithium-ion batteries. Showing 7 of 872 organizations.
| # | Organization | Approach | Signals (24 mo) | Momentum | Why it matters |
|---|---|---|---|---|---|
| 1 | 
Chinese Academy of Sciences CAS
Research · China |
Silicon–carbon composites | PUB 71 | +15% | Recently, its researchers reported core-shell Si@C anodes made by in-situ liquid-phase precipitation and localized graphitization of porous carbon hosts for vapor-deposited Si/C anodes. The work targets conductivity, silicon distribution, and cycling stability. |
| 2 | 
Contemporary Amperex Technology Co. Ltd
Corporate · China |
General | PAT 102 · PUB 5 NEWS 80 |
-13% | Its silicon-anode-related research includes analysis of thermal-safety concerns in high-energy-density lithium-ion batteries and the reactivity of silicon-carbon anodes. This work addresses safety considerations for batteries incorporating higher-capacity anodes. |
| 3 | 
University of Chinese Academy of Sciences
Research · China |
Silicon–carbon composites | PUB 57 | +19% | Recently, its researchers reported core-shell Si@C anodes and silicon-nitride reinforcement approaches for improving the stability of silicon-based anodes. Other work examines acrylate-network binders for silicon/graphite electrodes. |
| 4 | 
Central South University
Research · China |
Binder and electrode engineering | PUB 50 | +27% | Recently, its researchers reported a microdomain-bonded binder for mechanically robust micron-silicon anodes. Its work also explores talc-derived silicon-carbon materials and nanostructured silicon electrodes. |
| 5 | 
LG Corp
Corporate · South Korea |
General | PAT 44 · PUB 3 NEWS 97 |
-31% | Research associated with the LG group examines electrolyte solvation structures for fast charging micron-silicon anodes. The focus is on improving charging behavior in energy-dense lithium-ion cells. |
| 6 | 
Zhejiang University
Research · China |
Silicon–carbon composites | PUB 42 | +21% | Recently, its researchers reviewed porous carbon hosts for silicon-carbon anodes and reported localized graphitization of hosts for vapor-deposited Si/C material. The work addresses silicon placement and interfacial stability. |
| 7 | NB
NEO Battery Materials Ltd.
Startup |
General | NEWS 58 | -88% | It develops silicon-based anode materials and has reported scaling production to 20 tons per year for manufacturability testing. Its NBMSiDE product line is being developed for battery applications. |
| 8 | ··Hidden organizationCompany | Approach | PAT 00 · PUB 00 GRANTS 0 · NEWS 00 | +00% | Available to registered users. |
| 9 | ··Hidden organizationCompany | Approach | PAT 00 · PUB 00 GRANTS 0 · NEWS 00 | +00% | Available to registered users. |
| 10 | ··Hidden organizationCompany | Approach | PAT 00 · PUB 00 GRANTS 0 · NEWS 00 | +00% | Available to registered users. |
Startups to watch and leading research centers
Startups to watch 18 total
Leydenjar Technologies BvNetherlandsIt develops pure-silicon anodes, and a patent describes an electrode with a conductive substrate and a layer containing at least 90% silicon by weight. Its focus is high-silicon-content anode construction.- Jiangxi JCC Silicon Win New Energy Technology Co., Ltd.ChinaRecently, it reported work on precursor-controlled silicon deposition, porous carbon@nanosilicon@carbon composites, and multilayer silicon-carbon-coated graphite. Its commercial focus is in-situ composite silicon-carbon anode materials.
OneD Material LLCUnited StatesIt manufactures silicon-graphite anode material and partnered with Shanghai Putailai on development and scale-up of next-generation silicon-graphite anodes. Its focus is incorporating silicon into graphite-based electrodes.- ··Hidden startupCountryAvailable to registered users, with funding and founding year.
- ··Hidden startupCountryAvailable to registered users, with funding and founding year.
Leading research institutions 626 total
- Chinese Academy of Sciences CASChinaRecently, its researchers reported core-shell Si@C anodes made by in-situ liquid-phase precipitation and localized graphitization of porous carbon hosts for vapor-deposited Si/C anodes. The work targets conductivity, silicon distribution, and cycling stability.
- University of Chinese Academy of SciencesChinaRecently, its researchers reported core-shell Si@C anodes and silicon-nitride reinforcement approaches for improving the stability of silicon-based anodes. Other work examines acrylate-network binders for silicon/graphite electrodes.
- Central South UniversityChinaRecently, its researchers reported a microdomain-bonded binder for mechanically robust micron-silicon anodes. Its work also explores talc-derived silicon-carbon materials and nanostructured silicon electrodes.
- ··Hidden research institutionCountryAvailable to registered users, with their key researchers.
- ··Hidden research institutionCountryAvailable to registered users, with their key researchers.
Where silicon anode lithium-ion batteries innovation happens
Share of documents with at least one organization from each country.
Open the interactive map with all 872 organizationsMain technical approaches
Last 24 months| Approach | What it is | Documents | Leading organizations |
|---|---|---|---|
| Silicon–carbon composites | These combine silicon with conductive, porous carbon to buffer expansion, trading added material and processing complexity for improved contact and structural support. | 1,365 |
Zhejiang University, Chinese Academy of Sciences CAS, Contemporary Amperex Technology Co. Ltd |
| Silicon–graphite blends | These incorporate silicon into graphite electrodes, easing integration with established designs but limiting the silicon content and capacity gains. | 392 |
Nbm Co., NEO Battery Materials Ltd., E-NEO |
| Silicon oxide compounds | SiOx offers a silicon-containing alternative that can improve stability, but its composition and first-cycle lithium loss require careful control. | 536 |
Chinese Academy of Sciences CAS, Unilever, Ben & Jerry'S |
| Elemental silicon architectures | Porous, nanoscale or wire-like silicon structures make room for expansion, but can add manufacturing complexity and increase reactive surface area. | 480 |
Chinese Academy of Sciences CAS, Central South University, Zhejiang University |
| Binder and electrode engineering | These methods strengthen particle and electrode connections under mechanical stress, while binder choice can affect conductivity and processing. | 220 |
Chinese Academy of Sciences CAS, University of Chinese Academy of Sciences, Zhejiang University |
| Prelithiation | Prelithiation replaces lithium lost during initial cycling, improving lithium balance but adding process steps and handling requirements. | 120 |
China University of Mining and Technology, Tianjin University, University of Macau |
Emerging trends
Last 12 months vs previous 36 monthsTerms whose frequency in the last 12 months grew the most compared with the previous 36 months.
Funding and investment
Recent funding rounds
Recorded grant support totals $85.9 million across 36 grants since 2020. These figures are topic-linked and should not be read as funding dedicated solely to silicon-anode development.
Patent landscape
Top patent holders · last 24 monthsRecent developments
Latest news, duplicates removed- Oct 2026• Leverage two complementary areas of expertise: Novacium’s high-capacity silicon-based anode materials and Tokai COBEX’s low-carbon synthetic graphite developed for batteries and produced in Europe. • Evaluate the…GlobeNewswire - News from Canada
- Sep 2026Dublin, Sept. 24, 2026 (GLOBE NEWSWIRE) -- "Smartphone Li-Ion Battery Market Outlook 2026-2031: Trends, Supply Chain, and Key Players Analysis" has been added to ResearchAndMarkets.com's offering. The global smartphone…GlobeNewswire: Research Analysis And Reports
- Jul 2026Sila says its silicon anodes could deliver 20% more range as it scales U.S. production for Mercedes, Panasonic and other automakers. - Sila says its silicon-carbon anodes could give EVs 20% more range without larger…InsideEVs - Articles
- Jul 2026- HPQ ENDURA+ Gen4 21700 lithium-ion cells have successfully achieved UL 1642 safety certification from an accredited independent testing laboratory. - UL 1642 certification validates compliance with one of the…GlobeNewswire: Industry News on Basic Materials
- Month 20XXHidden developmentAvailable to registered users with alerts enabled.
Frequently asked questions about silicon anode lithium-ion batteries
What companies are working on silicon anode lithium-ion batteries?
Contemporary Amperex Technology Co. Ltd, LG Corp and Btr New Material Group Company Ltd are among the active companies. Contemporary Amperex Technology Co. Ltd leads the listed patent holders with 102 patents, while LG Corp has 44 and Btr New Material Group Company Ltd has 38. Sila Nanotechnologies and Amprius Technologies are also active in silicon-based anode materials.
Which silicon anode lithium-ion battery startups are notable in 2026?
NEO Battery Materials Ltd., Leydenjar Technologies and OneD Material are notable startups working on silicon-based anodes. NEO Battery Materials reports scaling production for manufacturability testing, while Leydenjar focuses on pure-silicon anodes. OneD Material makes silicon-graphite anode material and partnered with Shanghai Putailai on development and scale-up.
Which universities and research centers lead silicon anode research?
Chinese Academy of Sciences, University of Chinese Academy of Sciences and Central South University are among the leading research organizations. They have 71, 57 and 50 topic-window documents, respectively. Their work includes core-shell Si@C designs, silicon-nitride reinforcement and mechanically robust binders for micron-silicon anodes.
How much funding has silicon anode lithium-ion batteries received?
The topic records $85.9 million in grant support across 36 grants since 2020. This is a broad topic-linked total, not a verified sum of funding dedicated only to silicon-anode projects. Listed funding rounds total $122.6 billion, but include broad corporate and infrastructure financing and should not be treated as silicon-anode investment.
Who holds the most silicon anode lithium-ion battery patents?
Contemporary Amperex Technology Co. Ltd holds the most listed patents, with 102. LG Corp follows with 44, and Btr New Material Group Company Ltd has 38. Other listed holders include Zhuhai CosMX Battery Co. with 33 and Shenzhen Capchem Technology Co. with 25.
Is silicon anode patent activity growing?
No: patent activity declined 35.4% in the latest 12 months compared with the previous 12 months. The topic records 1,029 patents in the 24-month window. Publication activity also declined, by 5.4% in the latest 12-month comparison, while silicon–carbon composites remain the largest approach by patent share.
What are the main approaches to silicon anodes, and how do they differ?
The main approaches include silicon–carbon composites, silicon–graphite blends, silicon oxide compounds, elemental silicon architectures, binder and electrode engineering, and prelithiation. Composites and blends incorporate silicon into host materials; elemental architectures reshape silicon to accommodate expansion. Binder engineering strengthens electrodes, while prelithiation addresses lithium lost during initial cycling.
Which countries lead silicon anode lithium-ion battery activity?
China and the United States lead the listed activity, with 6,884 and 6,217 documents, respectively. Japan follows with 2,478, then South Korea with 2,312. These country figures describe topic-linked documents and do not measure production capacity or commercial market share.
What are the applications of silicon anode lithium-ion batteries?
Electric vehicles are the largest listed application, with 1,387 documents. Consumer electronics account for 641, while aerospace and uncrewed aircraft account for 335. Power tools are also represented, with 55 documents. These applications reflect interest in higher-energy cells, but the figures do not establish commercial adoption.
What are the latest developments in silicon anode lithium-ion batteries?
Recent developments include waste-derived silicon/carbon anodes, core-shell Si@C structures, engineered binders and interphases, and production scale-up. Nanjing Normal University reported a flash Joule heating route using retired photovoltaic silicon and lignin waste in September 2026. Group14 began EV-scale production in South Korea in March 2026.