Boyuan and Easpring surge after solid-state electrolyte partnership

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Shares of a Chinese fine chemicals producer and a leading lithium battery cathode material supplier surged following their announcement of a strategic partnership to develop electrolytes for solid-state batteries and collaboratively drive their commercialization.

The chemical company’s stock rose by 16 percent, closing at CNY83.58 (roughly USD11.73) per share, while the cathode materials provider’s shares increased by 4.4 percent to CNY66.84. The local stock market’s innovative board also saw a modest gain of 0.4 percent.

The two companies will jointly develop a new solid-state electrolyte that combines high ionic conductivity with excellent interfacial stability. They plan to leverage the electrolyte manufacturer’s large-scale sulfide electrolyte production tech and customer networks, along with the chemical company’s advanced manufacturing capabilities for high-purity lithium iodide.

A mutual supply agreement will see the cathode materials firm purchasing high-purity lithium iodide and lithium sulfide from the chemicals company, fostering a close procurement relationship. They also intend to promote these new solid-state battery materials to major international battery and automotive manufacturers. Additionally, they will explore potential cooperation at the capital level concerning upstream raw materials and electrolyte production for solid-state batteries.

This partnership aims to capitalize on the chemical company’s dominant position in China’s inorganic iodide industry to enable mass production of high-purity lithium iodide, addressing key raw material shortages faced by solid-state battery producers. It will also utilize the cathode materials provider’s expertise in lithium battery technology to develop a competitive, cost-effective raw materials supply chain for solid-state batteries.

Solid-state batteries, which employ solid electrodes and electrolytes, offer significant advantages such as increased energy density, smaller size, enhanced safety, longer lifespan, and broader application potential. However, their commercial deployment is still in the early stages.