On August 29, Sinocat Technology Co., Ltd. (688737.SH, a listed company focused on environmental catalysts) disclosed its 2026 semi-annual report. According to the report, the R&D project 'Long-Cycle Polyanionic Sodium-Ion Cell Development' received CNY 7.2928 million in investment this period (cumulative R&D caliber), with milestones largely achieved: 1) screening of polyanionic system cathode/anode materials, pilot formula optimization and optimal ratio confirmation; 2) small-scale process trial production and electrochemical performance test reports, with cell energy density targets met. Results: stable energy density of 105Wh/kg, 3C high-rate charge/discharge, stable discharge from -40°C to 60°C with ≥80% capacity retention at -40°C, and cycle life exceeding 10,000 cycles at 1C with ≥70% capacity remaining after 10,000 cycles, reaching domestic advanced level for C&I energy storage scenarios.
Sinocat's main business is environmental catalysts (diesel national-VI catalysts); sodium-ion is its second growth curve. The report also discloses that its 'Second-Generation C&I Energy Storage System Development' project (second-gen cabinet liquid-cooled C&I storage system, 314Ah cells, 261kWh per cabinet, 0.5C rate, ≥6,000 cycles under standard conditions, ≥85% energy efficiency, system cost ≤CNY 0.6/Wh) has been completed, forming a coordinated reserve across 'storage systems + sodium cells + environmental materials'.
105Wh/kg is common for polyanionic routes (80-130Wh/kg) versus 140-160Wh/kg for layered oxides - a chemistry difference, not a shortcoming; '10,000+ cycles with ≥70% retention' is R&D testing data, not a finalized mass-production product; the report does not disclose sodium cell mass-production timelines or customers.