SOPHIA ANTIPOLIS, France – May 21, 2026 │ KnowMade is pleased to announce the new version of its Silicon Anode Li-ion Batteries patent monitoring service, delivering a comprehensive analysis of the latest patenting activities, key players, and emerging innovations in this rapidly evolving field through an interactive dashboard.
This quarterly update provides strategic insights into silicon-anode battery IP trends, supporting decision-makers in navigating the technology and competitive landscape.
China Continues to Lead the Global Silicon Anode Patent Landscape
During Q1 2026, more than 1,490 new patent applications related to silicon anode technologies were published worldwide, confirming the sustained acceleration of innovation for this next-generation lithium-ion battery material.
The quarter highlights strong activity from established battery leaders including COSMX / Coslight, Samsung, CATL, Sunwoda, Gotion, FAW, LG Energy Solution, and Highpower Technology, all reinforcing their strategic IP positions in high-capacity silicon-anode technologies. The competitive landscape remains highly dynamic, with both major battery manufacturers and specialized material suppliers continuing their patenting activities. Asian companies, particularly Chinese and Korean players, continue to dominate the ranking of top patent applicants, reflecting the strategic importance of silicon-anode technologies for next-generation EV batteries and high-energy-density storage systems.
Figure 1: Ranking of patent assignees according to the number of newly published patent families related to silicon anode technologies in Q1 2026.
Patent activity remains heavily concentrated in China, which continues to dominate new patent filings and industrial-scale initiatives, highlighting the country’s accelerating investments in battery material innovation and manufacturing capabilities. Patent activity in Korea and the U.S. also remains significant.
Figure 2: Geographical distribution of newly published patent filings related to silicon anode technologies in Q1 2026.
Q1 2026 confirms the growing strategic importance of silicon-rich anodes as battery manufacturers pursue higher energy density, faster charging capabilities, and improved cycle stability for electric vehicles and energy storage systems.
Most active start-ups and pure players in Q1 2026
Ecube Materials: Sustainable Silicon Anodes from Recycled Silicon Waste
Korean material manufacturer Ecube Materials, founded in 2017, emerged as one of the most active pure players in Q1 2026 with 7 new patent families.
The company developed innovative silicon anode materials derived from recycled silicon kerf waste, addressing both sustainability and manufacturing cost reduction challenges. Its patented technologies focus on plate-like and flake-shaped silicon particles incorporating multilayer structures combining Silicon, Silicon oxide, Silicon carbide and Conductive carbon coatings. These materials are often organized into granular porous silicon composites with controlled porosity to optimize lithium charging capacity and battery lifespan. By utilizing industrial waste, its inventions provide a highly cost-effective and sustainable solution for high-capacity energy storage. When combined with graphite, the resulting composites exhibit superior packing density and enhanced initial coulombic efficiency for next-generation secondary batteries.
Figure 3: a) Exemplary view illustrating a plate-shaped silicon composite of a silicon anode material for a lithium-ion secondary battery according to an embodiment of the present invention
b) TEM photograph of plate-shaped silicon on which the silicon carbide layer is formed
c) SEM photograph of particles aggregating plate-shaped silicon used for a lithium ion secondary battery according to an embodiment of the present invention
d) SEM photograph of plate-shaped silicon used in the preparation of a silicon negative electrode material for a lithium ion secondary battery according to an exemplary embodiment of the present invention.
The inventions disclosed by Ecube Materials illustrate the growing industry focus on sustainable silicon sourcing and advanced composite engineering. The company’s multilayer silicon/carbon structures are specifically designed to improve conductivity, reduce mechanical degradation during cycling, and maximize volumetric energy density.
Tanyan Technology Service Advances CVD-based Silicon-Carbon Architectures
Chinese material manufacturer Tanyan Technology Service, founded in 2022, also recorded 7 new patent families during Q1 2026.
Its patent applications focuses on advanced silicon-carbon composite materials leveraging Chemical Vapor Deposition (CVD) based architectures, Multi-layer core-shell structures, Porous carbon frameworks and Hard and soft carbon hybrid coatings.
These inventions prioritize overcoming silicon’s intrinsic limitations by achieving low volume expansion rates below 18% and high initial coulombic efficiencies reaching up to 93.5% without the need for pre-lithiation treatment.
Tanyan Technology additionally integrates cost-efficient manufacturing approaches using biomass-derived carbon sources and silicon-aluminum alloy etching technologies suitable for industrial scaling. Applications span electric vehicles, flexible electronics, and large-scale energy storage systems.
Amprius / Berzelius Strengthens High-Performance Si-C Composite Technologies
American battery and material player Amprius / Berzelius, founded in 2009, published 6 new patent families in Q1 2026.
Amprius /Berzelius continues to focus on high-performance silicon-carbon composite materials capable of surpassing the limitations of conventional graphite anodes. Key inventions in Q1 2026 include the implementation of nitrogen-gradient doped porous carbon and graphene-doped biomass carbon matrices as well as the use of sophisticated structural designs, such as alumina thin-layer coatings and boron-nitrogen co-doping. These inventions significantly enhance electronic conductivity, ionic transport, cycle stability and mitigation of silicon’s volume expansion.
Furthermore, the new patent applications introduce a specialized detection method to verify the activation uniformity of carbon particles, ensuring the consistent quality of raw materials.
Collectively, these advancements aim to enable next-generation lithium-ion batteries with superior energy density, faster charging capabilities, and enhanced structural durability
Green Energy Origin Targets Electrolytes Adapted to Silicon Anodes
Chinese material manufacturer Green Energy Origin (GEO), established in 2023, published 6 new patent families during the first quarter of 2026.
The company’s disclosed inventions combine silicon anode technologies with next-generation electrolyte chemistries and all-solid-state battery developments.
A primary emphasis is placed on specialized electrolyte additives, such as acyloxysilane and borazine derivatives, designed to stabilize electrode interfaces and inhibit harmful gas generation in high-voltage and high-temperature environments. Other inventions introduce unsaturated sulfonate additives that enhance SEI film flexibility, effectively accommodating the material’s inherent volume expansion in silicon-carbon anodes. Additionally, GEO’s new patent applications covers all-solid-state sulfide battery components featuring lithium-philic coatings and pre-lithiated silicon alloys to prevent dendrite growth and ensure high initial coulombic efficiency.
These technologies are designed to improve fast charging, suppress dendrite formation, stabilize electrode interfaces, and extend cycle life under high-voltage and high-temperature conditions.
Tianmu Energy Anode Material Focuses on Robust Core-Shell Silicon Architectures
Chinese company Tianmu Energy Anode Material, founded in 2017, also emerged among the most active players with 6 new patent families.
Its patent filings center on advanced silicon-carbon composite anodes featuring sophisticated multi-layer core-shell structures. Key inventions include porous carbon matrices derived from high-temperature polymers like polybenzimidazole to house nano-silicon particles, effectively mitigating volume expansion during cycling. Specific designs incorporate a graphite core with an amorphous carbon induction layer to ensure uniform silicon deposition, significantly enhancing initial coulombic efficiency and rate capability. The inventions also feature high-pressure-resistant porous carbon (over 40MPa) consisting of soft-carbon cores and hard-carbon shells to maintain structural integrity under stress.
The company additionally developed advanced electron microscopy and image-analysis methods to monitor silicon deposition uniformity during manufacturing processes.
Figure 4: right: schematic structural diagram of a silicon-carbon anode material according to an embodiment of the present invention. Left: schematic structural diagram of a negative electrode material according to an embodiment of the present invention.
The new patent filings from Tianmu Energy Anode Material demonstrate the increasing sophistication of silicon/carbon composite engineering in China, particularly regarding porous architectures, stress-resistant materials, and controlled silicon deposition strategies for industrial-scale lithium-ion battery production.
Strengthen Your Strategy with KnowMade’s Monitoring Service
KnowMade’s Silicon Anode Li-ion Battery patent monitoring service provides a comprehensive, continuously updated view of the global patent landscape, enabling organizations to make informed strategic decisions in a highly competitive environment. At the core of this service lies a powerful interactive dashboard, designed to deliver immediate, actionable insights into silicon-anode battery IP trends.
A Powerful Interactive Dashboard for Silicon Anode IP Analysis
The Interactive Dashboard offers advanced capabilities to dynamically explore the silicon-anode battery patent landscape:
- Interactive data visualization for instant understanding of key trends and competitive dynamics
- Multi-criteria filtering by assignees, technologies, countries, dates, and legal status
- Real-time exploration of patent activity, including filings, grants, and expirations
- Seamless navigation from high-level market insights to detailed patent-level analysis
- Customizable views tailored to R&D, IP, strategy, and business development teams
This interactive dashboard enables users to quickly identify emerging trends, key innovators, and disruptive technologies, significantly accelerating decision-making processes.
Comprehensive and Continuously Updated Data
The Silicon Anode for Li-ion Batteries patent monitoring service includes:
- A quarterly updated patent database, covering all published patents up to the previous quarter
- Detailed patent information (assignees, dates, abstracts, legal status, etc.)
- Technology segmentation across the value chain (anode material, anode electrode, binders, current collectors, electrolytes, battery cells, battery packs, recycling)
- Direct access to original patent documents and legal status updates
Users can also benefit from dedicated reports and analyst insights, highlighting key developments in the silicon anode IP ecosystem with our custom services.
A Strategic Tool for Competitive Intelligence
By leveraging KnowMade’s silicon-anode Li-ion battery patent monitoring service, companies can:
- Track competitors’ innovation strategies and IP positioning
- Detect emerging players and early signals of disruption
- Anticipate technology trends and market shifts
- Focus on the most relevant insights to guide R&D and investment decisions
Ultimately, this monitoring service transforms complex patent data into clear, strategic intelligence, empowering organizations to strengthen their position in the fast-evolving IP landscape of silicon anode for Li-ion batteries.
For more information, visit the dedicated page: Silicon Anode for Li-ion Batteries Patent Monitor.
Press contact
contact@knowmade.fr
Le Drakkar, 2405 route des Dolines, 06560 Valbonne Sophia Antipolis, France
www.knowmade.com
About the author
Fleur Thissandier, PhD, works as Senior patent and technology analyst at KnowMade in the field of Materials Chemistry and Energy storage. She holds a PhD in Materials Chemistry and Electrochemistry from CEA/INAC, (Grenoble, France). She also holds a Chemistry Engineering Degree from the Superior National School of Chemistry (ENSCM Montpellier, France). Fleur previously worked in battery industry as R&D Engineer.
About KnowMade
KnowMade is a technology intelligence and IP strategy firm specializing in the analysis of patents and scientific publications. We assist innovative companies, investors, and research organizations in understanding the competitive landscape, anticipating technological trends, identifying opportunities and risks, improving their R&D, and shaping effective IP strategies.
KnowMade’s analysts combine their strong technology expertise and in-depth knowledge of patents with powerful analytics tools and methodologies to transform patent and scientific data into actionable insights to support decision-making in R&D, innovation, investment, and intellectual property.
KnowMade has solid expertise in Semiconductors and Packaging, Power Electronics, Batteries and Energy Management, RF and Wireless Communications, Photonics, MEMS, Sensing and Imaging, Medical Devices, Biotechnology, Pharmaceuticals, and Agri-Food.