September, a critical period for the sodium-ion battery industry's push towards mass production, saw differentiated performance across the industry chain segments — production of some materials surged YoY but faced pressure MoM, some segments maintained growth resilience, while mass production bottlenecks, cost pressure, and demand fluctuations remained common challenges for the industry. From cathode and anode to electrolyte and battery cell end-users, operational details and future expectations across segments collectively outline the current development profile of the sodium-ion battery industry.

In September, the domestic iron phosphate market exhibited an active trend of "increases in both volume and price," with particularly outstanding production data. According to statistics, iron phosphate production rose significantly by 17% MoM and was up 58% YoY, successfully surpassing the 300,000 mt monthly production threshold, achieving a notable supply-side increase compared to August.

On September 25, CATL and Shouqi Group signed a strategic cooperation agreement. The two parties will collaborate in areas such as passenger transport, vehicle leasing, automotive services, and energy supply to advance vehicle electrification transformation, after-sales services, used battery recycling, and the deployment of charging and battery swapping facilities.

At the beginning of the week, the domestic spot lithium carbonate market remained stable, with the price center holding steady and no significant fluctuations observed.

In September 2025, China's total monthly lithium carbonate production continued to hit new highs, increasing 2% MoM and surging 52% YoY.

Monthly phosphate ore supply and demand maintained a tight balance, with prices stabilizing at a high level of around 1,000 yuan. The proportion of new energy demand rose to 6%-7%, but overcapacity in midstream materials such as LFP led to price pressure. Enterprises accelerated their deployment of phosphate ore resources and new solid-state battery