Sodium-Ion Battery Recycling Patent Landscape 2026
Sodium-Ion Battery Recycling Patent Landscape in 2026
Sodium-ion battery recycling is an emerging, highly concentrated field with only 7 patent families in scope, led overwhelmingly by Uchicago Argonne LLC. The field is still expanding on a multi-year basis — recent-window growth is positive — though annual volume has eased from its 2023 peak and the most recent years remain understated by publication lag.
A nascent field dominated by one national-lab spinout
Uchicago Argonne LLC holds 4 of the 7 patent families in scope, giving it a commanding lead over every other filer. The University of Birmingham, Zhejiang Tianneng New Material Co., Ltd., and Lanjing New Energy (Jiaxing) Co., Ltd. each hold a single family.
The top five filers account for 100% of the combined output of the hundred largest filers, confirming extreme concentration at this early stage. There is effectively no second tier: a single institution holds a plurality larger than all others combined.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Uchicago Argonne LLC | 4 | |
| 2 | University of Birmingham | 1 | |
| 3 | Zhejiang Tianneng New Material Co., Ltd. | 1 | |
| 4 | Lanjing New Energy (Jiaxing) Co., Ltd. | 1 |
Argonne’s position — rooted in H01M battery-cell and electrode classifications — reflects its established expertise in advanced battery chemistry research. The other filers bring complementary angles: metal extraction (C22B) from Tianneng and Birmingham, and solid-waste disposal (B09B) from Lanjing, hinting at the nascent diversity of technical approaches entering the space.
The corpus covers 7 patent families as of the analysis date; the most recent 18–24 months are subject to publication lag and will likely show higher counts once grants and publications clear. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Activity accelerated from 2023; technology mix is battery-cell-centric with adjacent metallurgical threads
Filing activity was negligible before 2020, jumped briefly in 2020–2021, then reached its highest single-year count in 2023. The technology breakdown reflects the field’s foundational stage, with battery-cell classification dominant and metallurgical recovery only beginning to appear.
Annual filing trend
Filings were absent from 2017–2019, rose to 2 families in 2020, dipped to 1 in 2021, then surged to a peak of 3 in 2023. The 2024–2026 counts appear low and should be read as partially incomplete due to publication lag rather than as a decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
All 7 patent families carry the H01M (batteries, cells and fuel cells) classification, establishing end-of-life battery management as the core technical anchor. C22B (metal extraction and refining) appears in 2 families, pointing to hydrometallurgical or pyrometallurgical recovery routes; B09B (solid waste disposal) appears in 1 family, reflecting a regulatory or process-engineering framing. The relative sparsity of C22B and B09B signals that materials-recovery methodology remains underdeveloped relative to the battery-cell framing.
↗ 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.
Battery recycling
A method (<b>2800</b>) of selectively leaching one or more manganese-containing phases from a mixed-phase battery electrode material comprises treating (<b>2802</b>) the mixed-phase battery electrode material with a solution of an acid, the acid acting as both a leaching agent and a reducing agent, so as to form a manganese-containing leachate whilst… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Lead-lead oxide-carbon nanocomposite for energy st… | 4 |
| 2 | Battery recycling | 3 |
| 3 | 一种钠离子电池的回收再生方法 | 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
With only 7 patent families and a single dominant filer, sodium-ion battery recycling sits at an unusually early inflection. Entrants can still establish foundational positions, but the window before the field crowds is uncertain as sodium-ion cell commercialization accelerates globally.
Growth stage — multi-year expansion, easing from 2023 peak
The lifecycle assessment places this field in the Growth stage: recent three-year filings sit well above the prior three-year window, confirming expansion on a multi-year basis. Annual volume has eased from its 2023 peak, but this is partly an artifact of publication lag in 2024–2025. The absolute corpus of 7 families means foundational IP positions remain unclaimed across most process routes.
Growth stageExtreme concentration — one filer holds the majority
Uchicago Argonne LLC holds 4 of 7 families, and the top five filers together account for 100% of the output of the hundred largest filers. This is characteristic of a pre-commercial field where a single well-funded research institution sets the pace. Any new entrant will need to either design around Argonne’s H01M-focused claims or target the less-covered C22B and B09B process routes.
Highly concentratedNo co-applicant relationships detected in current evidence
The collaboration evidence contains no co-filing relationships among the four identified applicants. This absence may reflect the field’s very early stage — each filer is independently staking out positions — or it may indicate that cross-sector partnerships (e.g., cell maker plus recycler) have not yet materialized in formal IP agreements. Evidence pending for confirmed co-development arrangements.
No co-filers detectedUS-first, with China beginning to file
The United States accounts for 5 of the patent records and China for 2, reflecting the lead of Argonne (a US national laboratory) alongside early activity from Chinese new-energy and materials companies. The absence of European filings is notable given EU battery-regulation pressure on end-of-life management, and may represent a genuine geographic gap worth monitoring.
US + 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.
Co-filing pairs, ranked by the number of jointly-filed patent families.
Argonne leads on cell-level IP; Chinese entrants bring metallurgical and waste-disposal angles
Four applicants hold the 7 families in scope. Uchicago Argonne LLC is the clear incumbent; the remaining three are all new entrants whose recent filings signal the field is beginning to attract commercial interest.
Uchicago Argonne LLC
Argonne holds 4 patent families, all classified under H01M 10 (secondary batteries) and H01M 4 (electrodes), reflecting a cell-chemistry and materials-recovery focus rather than downstream processing. Its momentum is flagged as a new entrant in the recent window, consistent with the field’s overall emergence post-2020. As the DOE’s primary battery-research laboratory, Argonne is well-positioned to convert its chemistry expertise into process IP as sodium-ion recycling scales.
families: 4Zhejiang Tianneng New Material Co., Ltd.
Tianneng holds 1 patent family, concentrated entirely in C22B (metal extraction and refining — subclasses 23, 47, and 7), distinguishing it as the only filer focused purely on metallurgical recovery routes. Its momentum is flagged as a new entrant. As part of the broader Tianneng Group, which has deep lead-acid and lithium battery manufacturing experience, this filing positions the company at the materials-recovery end of the sodium-ion recycling chain.
families: 1| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Uchicago Argonne LLC | 2 | ▲ new entrant |
| Lanjing New Energy (Jiaxing) Co., Ltd. | 1 | ▲ new entrant |
| Zhejiang Tianneng New Material Co., Ltd. | 1 | ▲ new entrant |
Under-served branches adjacent to the dominant H01M anchor
With only 7 families covering the field, the IPC landscape is thin across all branches. The two branches below are adjacent to the dominant H01M classification and observed to be relatively sparse; they carry plausible technical relevance to sodium-ion recycling but have not yet attracted meaningful dedicated filings.
C22B · Hydrometallurgical and pyrometallurgical recovery
Only 2 of 7 families carry C22B classification, despite metal recovery (sodium, transition metals from cathodes such as manganese or iron) being a critical economic and environmental lever in battery recycling. The sparse coverage suggests that specific leaching, precipitation, and refining process patents for sodium-ion chemistries remain largely unclaimed. Entrants with existing hydrometallurgical infrastructure — particularly those already active in lithium-ion recycling — may find a realistic entry path by adapting established unit operations to sodium-ion cathode compositions.
Search this in Eureka →B09B · Solid waste disposal and pre-treatment
Only 1 family carries the B09B (solid waste disposal) classification, indicating that pre-treatment steps — discharge protocols, mechanical separation, thermal pre-processing, and regulatory-compliant disposal of electrolyte and casing materials — are almost entirely unaddressed in the patent record. As sodium-ion cells reach end-of-life volumes, pre-treatment process design will become a bottleneck. Companies with existing battery-shredding or black-mass processing capabilities could find this branch accessible with targeted R&D investment.
Search this in Eureka →How the four filers differ by technology route
Strength of each leader across the main technology routes.
| Player | H01M 10 · Batteries, cells & fuel cells | H01M 4 · Batteries, cells & fuel cells | C22B 47 · Metal extraction & refining | C22B 7 · Metal extraction & refining | B09B 101 · Solid waste disposal |
|---|---|---|---|---|---|
| Uchicago Argonne LLC | Strong · 4 | Strong · 4 | Absent | Absent | Absent |
| University of Birmingham | Strong · 1 | Strong · 1 | Strong · 1 | Strong · 1 | Absent |
| Zhejiang Tianneng New Material Co., Ltd. | Strong · 1 | Absent | Strong · 1 | Strong · 1 | Absent |
| Lanjing New Energy (Jiaxing) Co., Ltd. | Strong · 1 | Strong · 1 | Absent | Absent | Strong · 1 |
Frequently asked questions
The current corpus contains 7 patent families in scope. This is a very small field by patent-landscape standards, consistent with sodium-ion recycling being at an early commercial stage.
Uchicago Argonne LLC leads with 4 patent families, all focused on H01M battery-cell and electrode classifications. The remaining three applicants — the University of Birmingham, Zhejiang Tianneng New Material Co., Ltd., and Lanjing New Energy (Jiaxing) Co., Ltd. — each hold one family.
The United States accounts for 5 patent records and China for 2. No European or other jurisdictions appear in the current evidence, which is notable given regulatory pressure on battery end-of-life management in the EU.
All 7 families carry the H01M (batteries, cells and fuel cells) classification. C22B (metal extraction and refining) appears in 2 families and B09B (solid waste disposal) in 1 family, indicating that materials-recovery and pre-treatment process IP is significantly underdeveloped relative to the cell-level framing.
Yes, the lifecycle assessment places it in the Growth stage: recent three-year filings are above the prior three-year window, reflecting a 33% growth rate. Annual volume eased after a 2023 peak, but the most recent years are understated by publication lag and should not be read as a real decline.
No co-applicant relationships are detected in the current evidence. Each of the four filers appears to be developing IP independently. This may change as sodium-ion cell commercialization matures and recycling supply chains require cross-sector partnerships.
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