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Silicon Anode for Li-ion Batteries Patent Landscape 2022

  • ID: 5578943
  • Report
  • April 2022
  • Region: Global
  • 180 Pages +
  • Knowmade


  • Amprius
  • Chery Automobile
  • Global Graphene
  • MGL New Materials
  • New Keli Chemical
  • SK Innovation

Report’s Key Features

  • PDF with > 180 slides
  • Excel file + Online database > 12,300 patent families
  • IP trends, including time evolution of published patents and countries of patent filings.
  • Ranking of main patent assignees.
  • Newcomers in the IP landscape.
  • Patent categorization by supply chain segments (anode materials, anode, binder, electrolyte, battery cell, etc.).
  • IP position of key players, and relative strength of their patent portfolios.
  • Current main technological approaches.
  • IP profiles of 17 key players, including IP dynamics, legal status and geographical coverage of patents, IP strategies, key patents and recent IP developments.
  • Excel database with all patents analyzed in the report, including patent segmentation and hyperlinks to an updated online database.

The Silicon anode-related patent landscape is very dynamic

Automotive represents a huge new potential market for the battery industry. Electric vehicle (EV) performances mainly rely on batteries, and companies operating in this field are investing a lot to meet their requirements in terms of autonomy, energy density, charge duration, lifetime and safety. R&D developments in the battery field are constantly increasing and multiplying at all supply chain levels. One solution envisioned to improve battery performances is to develop new silicon-based anode to replace graphite. Indeed, silicon anode-based Li-ion batteries show higher electro-chemical performances, and silicon is environmentally friendly and low-cost material. The cumulative funding for silicon anode start-ups reached $1.9B in 2021 (source: IdTechEx), and the global silicon battery market size is estimated to grow from $38M in 2020 to $177M by 2025 at a CAGR of 36.2% (source: MarketsandMarkets)
In this context, the publisher is releasing a new patent landscape report covering the whole supply chain of silicon anode-based Li-ion batteries, from anode materials, electrodes and binders, to battery cells, electrolytes and equipment. Silicon anodes for Li-ion batteries is a booming industry, and the level of intellectual property (IP) activity is growing fast with numerous newcomers entering the game. Patent landscape analysis is the perfect complement to market research, to fully comprehend the competitive landscape and technology roadmap, keep up with new technology developments, anticipate future technology adoption, and understand the different competitors’ strategies. This kind of patent landscape report reveals the companies, technical solutions and strategies not identified through standard market analysis.

The publisher's analysts have selected and analyzed more than 24,700 patents and patent applications grouped in more than 12,300 patent families (inventions) related to the whole supply chain of silicon anode-based Li-ion batteries (electrode materials, electrodes, electrolytes, battery cells). The publisher has identified more than 1,800 different patent assignees involved in the Silicon anode patent landscape. The significant proportion of patents granted worldwide reflects a certain maturity of silicon anode technology for Li-ion batteries which is now being adopted by the industry. Nevertheless, numerous patent applications are still pending, meaning that R&D developments are still ongoing to solve technical issues related to silicon anode batteries

Leading IP players and IP newcomers across the supply chain

The report provides a clear overview of the most active patent applicants as well as a presentation of newcomers to the patent landscape. Furthermore, patent segmentation reveals the IP position of patent assignees by supply chain segments (anode material, electrode, battery cell) and highlights their key patent and recent IP developments for silicon anode materials (morphologies, compositions, manufacturing processes). Special attention has been paid to start-ups and Chinese ecosystem.

The silicon anode patent landscape was dominated by Japanese entities (Hitachi Chemical, Showa Denko, Mitsui, Panasonic/Sanyo, Sony, NEC, Toyota, etc.) and the two major South Korean battery companies (LG Chem, Samsung) until the early 2010s, but the IP activity from Chinese entities has exploded since 2015, representing today 45% of the patents.
The Chinese IP leaders are ATL, Guoxuan High-Tech, CATL, Shanshan Energy, COSMX, SVOLT, New Keli Chemical, EVE Energy and Yinlong Energy. Only a few Europeans (Bosch/Seeo, Nexeon and CEA) and Americans (Global Graphene, General Motors, Enevate and Amprius) have patents on silicon anodes for Li-ion batteries. The three main car manufacturers Toyota, General Motors and Nissan are present in the IP landscape.

The publisher has identified more than 170 IP newcomers entering the patent landscape the last few years, including numerous start-ups: QingTao Energy Development, Sila Nanotechnologies, StoreDot, Wildcat Discovery Technology, Battflex, Coreshell Technologies, 3DBattery, QuantumScape, AnteoTech, Enwires, Blue Current, Graphenix Development, Cenate, SilLion (acquired by Tesla), OneD Materials, Enevate, Amprius, Nexeon, Nanospan, NanoGraf, Group14 Technologies, Qnovo, etc.

Focus on key players’ patent portfolios

The report provides a detailed analysis of 17 key IP players and most promising IP newcomers: Samsung, LG Chem/LG Energy Solution, Panasonic/Sanyo, Murata/Sony, CATL, SVOLT, Toyota, Hitachi Chemical/Showa Denko, Shin-Etsu Chemical, Mitsubishi Chemical, BTR New Energy Material, Shanshan Energy, Nexeon, Amprius, StoreDot, Global Graphene, Guoxuan High-Tech. For each player, the publisher summarizes their IP portfolio, unveil their IP strategies by analyzing their key patents and recent IP developments.

Understand the technological trends

The patents have been categorized by supply chain segment (anode material, anode, binder, electrolyte, battery cell. The report comprises specific parts dedicated to silicon anode materials, silicon anode and battery cell, in which the key IP players, IP newcomers, key patents and recent IP development related to are analyzed. In this report, the publisher highlights the main silicon-based materials which are envisioned in patents to improve the cyclability and electrochemical performances of silicon anode materials, increase the yields and reduce the cost and environmental impact of the material synthesis.

Useful Excel patent database

The report also includes an Excel database with the 12,300+ patent families (inventions) analyzed in this study. This useful patent database allows for multi-criteria searches and includes patent publication numbers, hyperlinks to an updated online database (original documents, legal status, etc.), priority dates, title, abstract, patent assignees, patent’s current legal status, and segments (anode material, anode, binder, battery cell, electrolyte, equipment, etc.).

Companies mentioned in the report (Non-exhaustive)

A123 Systems (Wanxiang group), Amprius, ATL (Amperex Technology), BAK Battery, BASF, Bosch/SEEO, BTR New Energy Material, BYD, Canrd New Energy Technology, CATL (Contemporary Amperex Technology Ltd), Chery Automobile, COSMX, Enevate, EVE Energy, Fujifilm, Furukawa, General Motors, Global Graphene, GS Yuasa, Guoxuan High Tech Power Energy, Hitachi , Hitachi Chemical / Showa Denko, Hitachi Maxell, Huawei, Hyundai/Kia, JSR, LG Chem/LG Energy Solution, MGL New Materials, Mitsubishi Chemicals, Mitsui Chemicals, Mitsui Mining & Smelting, MU Ionic Solutions, Murata Manufacturing/Sony, NEC, New Keli Chemical, Nexeon, Nissan, Panasonic/Sanyo, Samsung, Sekisui Chemical, Shanshan Energy technology, Shin Etsu Chemical, SK Innovation, Soundgroup, Sumitomo Electric Industries, Sunwoda, SVOLT (Fengchao Energy Technology), TDK, Tinci Materials Technology, Toshiba, Toyota, Ube Industries, Umicore, Wacker Chemie, Yinlong Energy, Zeon, etc.


  • Amprius
  • Chery Automobile
  • Global Graphene
  • MGL New Materials
  • New Keli Chemical
  • SK Innovation
  • Context
  • Challenges in battery field
  • Main advantages and drawbacks of silicon anode
  • Main challenges and improvement solutions for Silicon anode lithium-ion battery
  • Scope of the report
  • Key features of the report
  • Why study the patent landscape

  • Patent search, selection and analysis
  • Terminology for patent analysis
  • Key players & Key patents


  • Timeline of patent publications
  • Time evolution of patent publications - Main patent applicants
  • Timeline of Main IP players by typology
  • Time evolution of company headquarters
  • Main patent assignees
  • Most active patent applicants since 2020
  • Main patent assignees by company type
  • Main patent assignees: time evolution of patent publications
  • Main IP newcomers
  • Main Chinese patent assignees
  • Most active Chinese patent applicants since 2020
  • Main Chinese patent assignees by company type
  • Battery Manufacturers
  • Material Manufacturers
  • Car Manufacturers
  • Start-ups and Pure players
  • Current legal status of patents
  • IP leadership of patent assignees
  • Patenting activity by publication country
  • Geographical distribution of alive patents
  • Main patent assignees: geographical coverage of alive patents
  • IP Strategy of the main Chinese entities
  • Definition of supply chain segments
  • Useful Excel database allows multi-criteria searches
  • Time evolution of patent publications by segment
  • Main patent assignees versus Segments
  • Main IP newcomers versus Segments
  • Main start-ups versus segments
  • Main car-makers versus segments
  • Main Chinese IP players versus segments
  • Main patent assignees by segment
  • Noteworthy IP players by supply chain segment
  • Patent Litigations

  • Main patent assignees
  • Most active patent applicants since 2020
  • Main IP newcomers
  • Main start-ups
  • Main car-makers
  • IP Leadership
  • IP blocking potential
  • Strength index of patent portfolios
  • Key patents
  • Main and recent developments

  • Main patent assignees
  • Most active patent applicants since 2020
  • Main IP newcomers
  • Main start-ups
  • Main car-makers
  • IP Leadership
  • IP blocking potential
  • Strength index of patent portfolios
  • Main and recent developments

  • Main patent assignees
  • Most active patent applicants since 2020
  • Main IP newcomers
  • Main start-ups
  • Main car-makers
  • IP Leadership
  • IP blocking potential
  • Strength index of patent portfolios
  • Main and recent developments

  • Samsung
  • LG Chem/Energy Solutions
  • Panasonic/Sanyo,
  • Murata/Sony
  • CATL
  • Toyota
  • Hitachi Chemical/Show
  • Denko
  • Shin Etsu
  • Mitsubishi Chemical
  • BTR
  • Shanshan
  • Nexeon
  • Amprius
  • StoreDot
  • Global Graphene
  • Guoxuan High
  • Tech Power Energy



A selection of companies mentioned in this report includes:

  • A123 Systems (Wanxiang group)
  • Amprius
  • ATL (Amperex Technology)
  • BAK Battery
  • BASF
  • Bosch/SEEO
  • BTR New Energy Material
  • BYD
  • Canrd New Energy Technology
  • CATL (Contemporary Amperex Technology Ltd)
  • Chery Automobile
  • Enevate
  • EVE Energy
  • Fujifilm
  • Furukawa
  • General Motors
  • Global Graphene
  • GS Yuasa
  • Guoxuan High Tech Power Energy
  • Hitachi 
  • Hitachi Chemical / Showa Denko
  • Hitachi Maxell
  • Huawei
  • Hyundai/Kia
  • JSR
  • LG Chem/LG Energy Solution
  • MGL New Materials
  • Mitsubishi Chemicals
  • Mitsui Chemicals
  • Mitsui Mining & Smelting
  • MU Ionic Solutions
  • Murata Manufacturing/Sony
  • NEC
  • New Keli Chemical
  • Nexeon
  • Nissan
  • Panasonic/Sanyo
  • Samsung
  • Sekisui Chemical
  • Shanshan Energy technology
  • Shin Etsu Chemical
  • SK Innovation
  • Soundgroup
  • Sumitomo Electric Industries
  • Sunwoda
  • SVOLT (Fengchao Energy Technology)
  • TDK
  • Tinci Materials Technology
  • Toshiba
  • Toyota
  • Ube Industries
  • Umicore
  • Wacker Chemie
  • Yinlong Energy
  • Zeon
For patent landscape analysis, the patent information is extracted from the FamPat worldwide patent database (Questel-ORBIT) which provides 100+ million patent documents from 95 worldwide patent offices.

The search strategy combines keyword-based searches with expert review and manual screening of the patents. Keywords are searched in the title, abstract, claims and description. Relevant IPC (International Patent Classification) and CPC (Cooperative Patent Classification) are also used for the patent search. The dataset of identified patents is manually cleaned of non-relevant patents. Citing and cited patents of selected relevant patents are also included in the search strategy. The search strategy (keywords and search equations) and the dataset of selected patents is provided in our reports.

The publisher's analysts (PhD team) combine their technical and patent expertise with powerful analytics tools and proprietary methodologies to deliver the most relevant patent analyses.