Nearly tripling in a year! Thionyl chloride is being repriced by the electrolyte industry chain

The market continues to rise, with price spreads recovering to multi-year highs

Thionyl chloride was previously a niche chemical product, with its average market price remaining between 1,300 and 1,500 yuan per ton over the past two to three years, and the sector was basically operating near the break-even point. The inflection point of the market emerged in mid-November 2025, when the quotation exceeded 1,700 yuan per ton, surging over 30% in that month, and the price has been rising steadily since then.

This year, the price of thionyl chloride has fluctuated upward. On October 15, the market quotation reached 5,600 yuan per ton, with a daily increase of 317 yuan per ton, a year-on-year rise of 306.7%, and a cumulative increase of 331.1% compared with the low point in August last year.

On the cost side, the price of raw material sulfur rose first and then fell this year. As of November 11, the sulfur price was 4,856 yuan per ton, with a year-to-date decline of 34%, and the price spread between thionyl chloride and sulfur has narrowed significantly. while the current sector operating rate has rebounded slightly month-on-month, it still remains at a medium-to-low level overall, with limited new supply. sector analysts indicate that the decline in sulfur prices and the rise in thionyl chloride prices indicate that the core driver of this round of market rally is the tightening of the supply-demand pattern, rather than cost-driven factors.

Demand structure reconstruction: LiFSI becomes the core incremental driver, with traditional demand providing multi-point support

The core driver of the tight supply and demand of thionyl chloride is the explosive demand to the new lithium salt LiFSI (lithium bis(fluorosulfonyl)imide). LiFSI is compatible with high-nickel, high-voltage, and fast-charging battery systems, and has outstanding conductivity and thermal stability. sector calculations show that approximately 1.5 tons of thionyl chloride are consumed in the production of 1 ton of LiFSI, with some process routes requiring up to 2.5 tons per ton of product. In 2025, China's LiFSI shipments reached about 44,700 tons, corresponding to a demand to around 67,000 tons of thionyl chloride.

The expansion of power batteries and energy storage is driving continuous development in LiFSI demand. Duofluoride disclosed on its interactive platform that the current average addition proportion of LiFSI in electrolytes is 1.5%-2.5%, with higher proportions in high-end fast-charging formulas. Gaogong Lithium predicts that by 2030, the thorough addition proportion of LiFSI is expected to rise to 4%-6%, and global shipments will reach 3.5 to 7 times the level in 2025.

In addition to the new energy vehicle battery sector, traditional downstream demand also provides support. A major Shandong-based manufacturer in the sucralose sector is about to resume production, and the addition of new feed additive consumption scenarios to sucralose has opened up new demand space; demand in the medical and pesticide fields remains rigid. Meanwhile, AI computing power centers and high-speed optical networks are driving demand to para-aramid, and thionyl chloride, the acyl chloride reagent required to the production of aramid monomers, is also benefiting accordingly.

Institutions judge that the current supply-demand pattern is tight, with multiple demand increments providing support, so the price of thionyl chloride is likely to remain at a high level in the short term, with limited downward space.

High barriers to entry on the supply side, with leading companies expanding production in an orderly manner

Data from research reports of Huaxin Securities shows that China's nominal total production capacity of thionyl chloride is about 635,000 tons. Three companies - Kaisheng New Materials, Jinhe sector, and Shilong manufacturing - account to approximately 46% of the total, while the production capacity of other companies is mostly below 50,000 tons, indicating a relatively high sector levels.

The approval limit to new thionyl chloride projects is high. Since 2021, thionyl chloride has been included in the list of items with high environmental risks. Its production relies on chlorine gaseous and sulfur dioxide, and ecological preservation and energy consumption manage are stringent, resulting in scarce new production capacity over the past two years.

· Shilong manufacturing is the main player in this round of production expansion. The company announced plans to build a 150,000-ton thionyl chloride project in two phases, with a total investment of 365 million yuan. The first phase will involve 80,000 tons of thionyl chloride and 20,000 tons of sulfur dioxide, with a construction period of 10 months; the second phase will involve 70,000 tons of thionyl chloride and 25,000 tons of sulfur dioxide, with a construction period of 8 months. Once the project is fully completed, the company's thionyl chloride production capacity will increase from 50,000 tons per year to 200,000 tons per year.

· Kaisheng New Materials, as a leading enterprise in the sector, has a designed production capacity of 100,000 tons per year to thionyl chloride, and is a core global supplier of battery-grade thionyl chloride. It is also laying out the aramid polymer monomer sector chain. The company recently stated on the investor platform that the current production unit has a high capacity utilization rate, and the existing production capacity can basically meet customer orders, and it will continue to track market changes.

· Jinhe sector has an existing thionyl chloride production capacity of 80,000 tons per year, and its items are prioritized to internal production of sucralose and LiFSI precursors, with the surplus supplied to new energy customers. The company's plan to add 100,000 tons of production capacity will be cutting-edge prudently in light of market conditions.

· Sanyou Chemical has put into operation its 40,000-ton thionyl chloride supporting production capacity in the first phase of its fine chemical sector, and the items have achieved stable sales and been included in its main business sequence.