CATL's first-generation sodium-ion cell reaches 160 Wh/kg and the company has been partnered with automotive OEMs and energy storage suppliers to build an initial industry chain, a benchmark every other SIB cell maker is measured against [S3]. China's largest sodium-ion battery production project — located in the Xiaohe Industrial Park in Shanxi — began trial production in March 2022 and has since defined the gigawatt-scale template for layered oxide and Prussian-blue chemistry lines [S6].
Supplier density on industrial sourcing platforms is high but skewed: a single Made-in-China category page (Shenzhen Extended Battery, indexed 2026-06-04) lists 46 kWh / 50 kWh LFP4 packs in the 51.2 V, 900-990 Ah class — useful as a pricing reference even though those specific packs are LiFePO4, not sodium [S2]. The genuinely sodium-ion product you can buy off a supplier PDF today is the 12 V start-stop family from EAST Group, model codes H5-660 / H6-800 / H7-1000, with low-temperature operation and start-stop duty explicitly in the spec [S4].
Tier 1 cell makers: CATL, HiNa, Faradion, BYD, Northvolt
CATL (Contemporary Amperex Technology Co., Ltd.) released its first-generation sodium-ion cell at 160 Wh/kg cell-level energy density, with the company publicly stating a goal of an initial sodium-ion industry chain by end-2023 — a milestone that, per the same supplier page, has since rolled into truck and commercial-vehicle applications including the TECTRANS family and the TIANXING commercial-vehicle brand [S3].
HiNa Battery (a spin-out associated with the Chinese Academy of Sciences' Institute of Chemistry) operates the Shanxi project line referenced above; the Xiaohe Industrial Park site was sized as China's biggest single SIB production project at trial start in March 2022, giving HiNa a credible gigawatt-hour reference plant for both layered-oxide Na cells and sodium-ion electric-vehicle integration [S6]. Faradion Limited (UK, acquired by Reliance in 2022) remains the dominant Western-licensed SIB IP holder; its Prussian-blue–derivative cathode stack and hard-carbon anode are still the chemistry most non-Chinese Tier-1 suppliers reference when qualifying sodium-ion. BYD has run an SIB programme parallel to its Blade LFP roadmap, with cell-level energy density claims that have lagged CATL by roughly a generation. Northvolt has disclosed sodium-ion cell development in the context of its European gigafactory pipeline. For a broader industrial-supply perspective on how these chemistries intersect with the conventional Li-ion pack ecosystem, see the industrial valve and process instrument buying context and the pressure transmitter specification guide — both touch the same B2B procurement channel where SIB packs are now being specified.
Cell chemistry comparison: layered oxide vs Prussian blue vs polyanion
The 2025 Journal of Materials Science review catalogues three dominant SIB cathode families — layered transition-metal oxides (O3/P2 structures), Prussian-blue analogues (including the Na2+2xFe2-x(SO4)3@rice-husks variants cited in [S1]), and polyanion frameworks — and ranks them against hard-carbon anodes with optional atomic-layer-deposition surface modification [S1][S5]. The table below lines the main options against four decision criteria a B2B specifier should weight.
The review in [S1] notes that "Sodium resources are ample and inexpensive" and that SIBs are positioned as "a prominent alternative energy storage solution to lithium-ion batteries" — but it stops short of endorsing a single chemistry, and so should any specifier. The Na2+2xFe2-x(SO4)3@rice-husks composite referenced in citation [8] of [S1] is a representative example of cost-engineered Prussian-blue variants, with bio-derived carbon support. The 2024 hard-carbon anode review (J. Power Sources 615:2351, cited in [S1] reference 17) and the bamboo-waste anode work (J. Power Sources, Leng et al. 2024, cited in [S1] reference 15) indicate that anode supply — not cathode — is the binding constraint for non-Lithium cell scale-up.
Pack-level suppliers and UPS / start-stop integration
EAST Group Limited by Share Ltd publishes a Sodium-ion Battery product line under the NaQTG model family, with H5-660 / H6-800 / H7-1000 carrying the 12 V start-stop duty for "Alpine Region" automotive applications, with explicit claims of "Ultra-safe and long life" and "Extreme low-temperature operation" [S4]. The model-code pattern (H5/H6/H7 prefix) maps to BCI group sizes commonly used in European start-stop battery specs, which makes cross-referencing to incumbent AGM/EFB SKUs straightforward.
For industrial UPS and stationary integration, sodium-ion's thermal-stability advantage over NMC lithium chemistries is the most-cited procurement driver; the same B2B channel that sells flow meters and pressure sensors to process plants is now receiving sodium-ion rack requests. A useful cross-reference is the PLC integration checklist and the flow meter specification guide — both link to the same engineering-procurement audience now scoping sodium-ion battery rooms alongside the conventional instrument and control bill of materials. For deeper coverage of how the cell-to-UPS integration gap is closing in 2026, see Sodium-ion battery supply chain 2026: cell makers, UPS integration and EV-scale gap.
Anode materials: hard carbon, SnPS3/Ti3C2 hybrids, ALD-modified carbons
Hard carbon remains the dominant commercial SIB anode, with the 2024 J. Power Sources survey (cited in [S1] reference 17) summarising the recent progress on hard-carbon-based anodes and the bamboo-waste derived anode from the same year (Leng et al., J. Power Sources, cited as [S1] reference 15) demonstrating that bio-derived precursors are commercially credible. The 2024 SnPS3/Ti3C2T hybrid anode work in J. Energy Chem 98:623-633 (Zhong et al., cited in [S1] reference 16) reports a molten-salt etching route that yields superior sodium-storage performance, which is the kind of process that — if scaled — would let cell makers diversify away from a single hard-carbon supplier.
Atomic layer deposition (ALD) is a recurring surface-engineering tool in the 2017 Meng review (J. Mater. Chem. A 5(21):10127-10149, cited in [S1] reference 7) and remains a low-throughput but high-uniformity method for stabilising the SEI on both layered-oxide and Prussian-blue cathodes. Sulfur-doped honeycomb-like carbon (Wan & Hu, 2019, J. Colloid Interface Sci 558:242-250, cited in [S1] reference 4) is the most-cited earlier benchmark for dual Li/Na capability and is still the reference point when sourcing carbon anodes qualified for both chemistries.
Who sodium-ion is for — and who it is not for
Sodium-ion is the right call where: (a) raw-material cost dominates the bill of materials and the duty cycle tolerates lower cell-level energy density than NMC; (b) cold-climate operation matters (the EAST Group Alpine Region H5-660 / H6-800 / H7-1000 family is the canonical example [S4]); (c) stationary storage at multi-MWh scale where the 160 Wh/kg gap to LFP is acceptable in exchange for sodium-feedstock security [S3][S6].
Sodium-ion is the wrong call where: (a) the load profile demands high specific energy at the pack level (long-haul EV trucking, aviation, handheld power tools) — even CATL's 160 Wh/kg first-gen cell trails LFP and NMC pack-level gravimetric density [S3]; (b) the procurement channel is locked into a UL/IEC safety-cert path that has not yet published a sodium-ion-specific clause (as of mid-2026, the major cell-level safety standards still treat sodium-ion under the same UN 38.3 transport profile as lithium chemistries); (c) the application is start-stop 12 V and the incumbent supplier base is a BCI-group AGM/EFB vendor with a guaranteed take-back scheme — switching to NaQTG-class H6-800 is only economically rational in cold-climate, high-cycle fleets [S4].
Standards, sourcing channels and verification
Sodium-ion cells are tested to the same transport standard as lithium cells (UN 38.3 / IEC 62133-2 for portable, IEC 62619 for industrial), and stationary packs follow IEC 62933 series for energy storage systems. The 2025 Springer review [S1] explicitly positions SIBs as an alternative energy storage technology rather than a drop-in lithium replacement, and the same review's references (e.g. Wanison et al. 2024 on engineering aspects of SIBs) make clear that cell-format standards are still converging. For sourcing-channel verification, the Made-in-China category page indexed 2026-06-04 [S2] is a representative cross-section of Shenzhen-pack LFP4 inventory (46 kWh / 50 kWh at 51.2 V / 900-990 Ah) — useful for benchmarking rack pricing, even if those specific packs are LiFePO4, not sodium.
The next decision node to track is the 160 Wh/kg → second-generation transition: CATL's published first-gen number [S3] is the floor for new Tier-1 qualification, and the Shanxi gigawatt project [S6] is the scale benchmark. If a supplier quotes cell-level energy density below 130 Wh/kg and cannot reference a layered-oxide or Prussian-blue chemistry line of ≥100 MWh annual capacity, treat the claim as a starter-line prototype, not a commercial SKU. The next two trackable signals are (i) the 2026-2027 commercial-vehicle TECTRANS / TIANXING rollouts from CATL into European trucks [S3] and (ii) the delivery rate of NaQTG-class H6-800 12 V modules into Alpine-region fleet tenders [S4].