Sodium-Ion Battery Current Collector Patent Landscape
Sodium-Ion Battery Current Collector Patent Landscape in 2026
With only 9 patent families in scope, the sodium-ion battery current collector space is nascent and sharply concentrated around a single dominant filer, Jiangsu Pylon Battery Co Ltd, which accounts for nearly half the corpus. All filings are China-originated, and the overwhelming majority cluster under the H01M battery class, leaving several adjacent material-science branches virtually uncontested.
A nascent field dominated by one Chinese battery maker
Jiangsu Pylon Battery Co Ltd leads. The remaining 8 filers each hold a single patent record, underscoring how lopsided the competitive position already is at this early stage.
The top five filers collectively account for 67% of the hundred largest filers’ combined total, a degree of concentration that is unusually high for such a small corpus and reflects the field’s immaturity rather than a mature oligopoly. No second-tier cluster has formed yet.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Jiangsu Pylon Battery Co Ltd | 4 | |
| 2 | HUNAN LIFANG NEW ENERGY SCI & TECH | 1 | |
| 3 | Jiangsu Jihou Intelligent Technology Co Ltd | 1 | |
| 4 | So-Fun Tech Corp Ltd | 1 | |
| 5 | Shuangdeng Group Co Ltd | 1 | |
| 6 | Shanghai Dinghao New Material Technology Co Ltd | 1 | |
| 7 | Nayue New Energy (Shanghai) Co Ltd | 1 | |
| 8 | Jiangsu Front New Energy | 1 | |
| 9 | Zhejiang Dinghao New Energy Technology Co Ltd | 1 |
Jiangsu Pylon Battery’s early lead, combined with its dual focus on H01M 10 and H01M 4 sub-classes, positions it as the provisional technology standard-setter. Any challenger entering now faces the task of differentiating on material approach rather than on cell-chemistry concepts already staked out.
Because publication typically lags filing by 12–18 months, activity in 2025 and 2026 is likely under-counted; the corpus should be treated as a lower bound on current activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A sudden 2025 burst after years of silence, anchored in battery-cell IPC classes
The annual trend and technology breakdown together reveal a field that essentially did not exist before 2025 and is still being defined at the IPC level by a small set of actors.
Annual filing trend
Zero filings are recorded from 2017 through 2024; 8 patent records appear in 2025 and 1 in 2026. Given standard publication lag, the 2025–2026 counts are almost certainly under-stated, and the true inflection point may be even sharper than the chart suggests. This pattern is consistent with a field transitioning from laboratory research to early patent staking.
↗ Hover for values · click a bar to ask EurekaTechnology composition
All 9 patent records carry the H01M class (batteries, cells, and fuel cells), confirming that filers are approaching current-collector design from a cell-integration perspective. C01B (non-metallic elements and inorganic compounds), C08G (condensation polymers), D01D (man-made filament spinning), and D04H (nonwovens and felts) each appear once, hinting at emerging materials-science approaches but not yet constituting a meaningful second cluster.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
一种基于动态自适应界面层的无负极钠离子电池集流体及其制备方法
本申请属于钠离子电池的技术领域，具体公开了一种基于动态自适应界面层的无负极钠离子电池集流体及其制备方法。一种基于动态自适应界面层的无负极钠离子电池集流体，包括金属集流体基材、缓冲层，所述缓冲层，原料包括如下：可溶胀聚合物、水溶性致孔剂和交联剂。本申请提供一种制备工艺简单、性能优异的无负极钠离子电池用集流体，构建一个具有微纳多孔结构且能在电解液中发生可控溶胀的聚合物缓冲层，多孔结构在电池组装前即提供均匀的离子传输通道，优异的体积变化缓冲能力。 (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 无负极钠离子电池集流体及其应用、无负极钠离子电池 | 1 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment
The combination of a tiny corpus, a single dominant filer, and a sudden 2025 emergence creates both urgency and opportunity for entrants who can differentiate on material route or electrode architecture.
Embryonic stage — the window to shape the IP landscape is open
The lifecycle stage cannot be formally determined from the available evidence (stage data is pending), but the filing pattern — zero activity through 2024 followed by a sharp 2025 burst — is characteristic of an embryonic field. Foundational claims in electrode architecture, surface treatment, and material selection remain largely unclaimed, making this an early-mover window.
EmbryonicSingle-firm dominance at 4 of 9 patent records
Jiangsu Pylon Battery Co Ltd holds 4 patent records against a field where every other applicant holds exactly 1. This gap is structurally significant: if the field matures rapidly, the leader’s early breadth in H01M 10 and H01M 4 sub-classes could translate into blocking positions. Challengers should audit Jiangsu Pylon’s claim scope before committing R&D resources to overlapping approaches.
High concentrationThree co-filing pairs signal complementary expertise linkages
Three co-applicant pairs are recorded: Hunan Sodium-Fang New Energy Technology (Hunan So-Fun Tech) with Hunan Lifang New Energy Sci & Tech; Zhejiang Dinghao New Energy Technology with Shanghai Dinghao New Material Technology; and Jiangsu Front New Energy with Shuangdeng Group Co Ltd. Each pairing appears to link a cell-focused entity with a materials or manufacturing partner, a pattern typical of early-stage technology development where no single firm commands the full value chain.
Selective partnershipsExclusively China-originated — no international protection sought yet
All 9 patent records are filed in China, and no PCT, EPO, or US filings appear in the corpus. This means the IP is currently effective only in China, leaving the technology space entirely open in other major battery markets. For non-Chinese entrants, this creates an opportunity to file in their home jurisdictions without risk of blocking prior art — at least until Chinese filers begin pursuing international protection.
China-onlyGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Hunan So-Fun Tech Corp Ltd | Hunan Lifang New Energy Sci & Tech Co Ltd | 1 |
| Zhejiang Dinghao New Energy Technology Co Ltd | Shanghai Dinghao New Material Technology Co Ltd | 1 |
| Jiangsu Front New Energy Co Ltd | Shuangdeng Group Co Ltd | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Jiangsu Pylon Battery leads; all others enter at parity
The Momentum data is not available for individual applicants, so trajectory reads are based on technology emphasis and co-filing behavior.
Jiangsu Pylon Battery Co Ltd
Holding 4 patent records — the entire coverage under both H01M 10 and H01M 4 sub-classes — Jiangsu Pylon Battery Co Ltd is the only filer to have staked claims across more than one H01M branch in this corpus. Its concentration in core battery-cell classes suggests a strategy of broad cell-integration coverage rather than material-specific specialization. Applicant-level momentum data is pending for this player.
patent records: 4Shuangdeng Group Co Ltd
Shuangdeng Group Co Ltd holds 1 patent record, filed in collaboration with Jiangsu Front New Energy, and its technology focus spans C01B 32 (carbon-based inorganic compounds), D01D 5 (filament spinning), and D04H 1 (nonwovens), pointing to a fiber-based or carbon-fiber current-collector approach that is technically distinct from Jiangsu Pylon Battery’s cell-integration route. This materials-science angle represents the most differentiated technical position in the current corpus.
patent records: 1Under-served material-science branches adjacent to the dominant H01M core
Four IPC branches each carry only 1 patent record in this corpus. They are observations of relative sparsity; two of them — C08G and the fiber/nonwoven pair — have plausible technical relevance to current-collector design and a realistic entry path for materials specialists.
C08G · Condensation Polymers — polymer binder and coating routes
Only 1 patent record occupies C08G (condensation polymers), filed by Jiangsu Jihou Intelligent Technology Co Ltd. Polymer-based conductive coatings and binder systems are a recognized avenue for improving current-collector adhesion and corrosion resistance in sodium-ion environments, yet the sub-class is nearly empty. A materials chemist with expertise in conductive polymers could file foundational claims here with minimal blocking risk from existing art in this corpus.
Search this in Eureka →D01D / D04H · Filament Spinning & Nonwovens — fiber-architecture current collectors
D01D 5 (man-made filament spinning) and D04H 1 (nonwovens and felts) each carry 1 patent record, both from the Shuangdeng Group / Jiangsu Front New Energy collaboration, alongside C01B 32 carbon compounds — suggesting a carbon-fiber or carbon-felt current-collector concept. Three-dimensional fiber-architecture current collectors are an emerging research direction for anode-free sodium cells, yet the space holds only one filer. Entry here would require cross-disciplinary capability spanning fiber processing and electrochemistry, but the IP terrain is open.
Search this in Eureka →How the nine filers divide across technology routes
Strength of each leader across the main technology routes.
| Player | H01M 4 · Batteries, cells & fuel cells | H01M 10 · Batteries, cells & fuel cells | C01B 32 · Non-metallic elements & inorganic compounds | C08G 83 · Condensation polymers | D01D 5 · Man-made filament spinning |
|---|---|---|---|---|---|
| Jiangsu Pylon Battery Co Ltd | Strong · 4 | Strong · 4 | Absent | Absent | Absent |
| Shuangdeng Group Co Ltd | Strong · 1 | Strong · 1 | Strong · 1 | Absent | Strong · 1 |
| Jiangsu Front New Energy Co Ltd | Strong · 1 | Strong · 1 | Strong · 1 | Absent | Strong · 1 |
| Jiangsu Jihou Intelligent Technology Co Ltd | Strong · 1 | Strong · 1 | Absent | Strong · 1 | Absent |
| Shanghai Dinghao New Material Technology Co Ltd | Strong · 1 | Strong · 1 | Absent | Absent | Absent |
| Zhejiang Dinghao New Energy Technology Co Ltd | Strong · 1 | Strong · 1 | Absent | Absent | Absent |
| Hunan Lifang New Energy Sci & Tech Co Ltd | Strong · 1 | Strong · 1 | Absent | Absent | Absent |
Frequently asked questions
The corpus contains 9 patent families in scope, all filed in China. Because publication typically lags filing by 12–18 months, the 2025 and 2026 counts are likely under-stated and should be treated as a lower bound.
Jiangsu Pylon Battery Co Ltd leads with 4 patent records, nearly half the entire corpus. Every other applicant holds exactly 1 patent record, making the field unusually concentrated around a single player.
Based on current evidence, all 9 patent records are filed exclusively in China. No PCT, EPO, US, or other international filings appear in the corpus, leaving the technology space open for protection in other major battery markets.
H01M (batteries, cells, and fuel cells) covers all 9 patent records. C01B (non-metallic elements and inorganic compounds), C08G (condensation polymers), D01D (man-made filament spinning), and D04H (nonwovens and felts) each appear once as secondary classifications.
Yes, three co-applicant pairs are recorded: Hunan So-Fun Tech with Hunan Lifang New Energy Sci & Tech; Zhejiang Dinghao New Energy Technology with Shanghai Dinghao New Material Technology; and Jiangsu Front New Energy with Shuangdeng Group Co Ltd. Each pair links a cell-focused entity with a materials or manufacturing partner.
C08G (condensation polymers) and the fiber/nonwoven route spanning D01D (man-made filament spinning) and D04H (nonwovens and felts) each hold only 1 patent record. Both have plausible relevance to current-collector design — polymer coatings and fiber-architecture electrodes respectively — and represent the lowest-density entry points in the current corpus.
Ready to map the current-collector IP landscape for your own technology focus?
Join 18,000+ innovators using PatSnap Eureka to map any technology landscape: search 2B+ patents and papers, surface key assignees, and generate a report like this in minutes.
Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. PatSnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.