Alibaba's Xiaomi Files Patent for Solid-State Battery Technology

Xiaomi has announced patents for its solid-state battery technology, which aims to improve the vehicle battery ecosystem. The patent was filed in 2023 and officially disclosed on June 13, 2025.

According to the patent summary, it involves a combination of electrodes and preparation methods that cover both solid-state electrodes and complete solid-state batteries. This patent claims composite electrodes comprising collection fluid layers and the active material layers, where the latter is stacked parallel to the collection fluid layer in thickness directions. It includes a base component incorporating electric materials and solutes; the solute flows through the thickness of all-electric fluid layers; it includes metallic components made from monomers and metals.

The innovation effectively shortens metal ion transmission paths within thick electrodes, speeding up the transmission rate of metal ions between layers on the composite electrode. The new patent also enhances performance by improving load-bearing ratios in solid-state batteries.

Prior to this announcement, Xiaomi revealed publicly that its CTB battery package represents a mature development state of the CLTC battery system with extended energy ranges above 1000 km and capacity limits exceeding 1200 km. These announcements came out shortly after applying for the patents mentioned earlier, indicating that Xiaomi aims to reach 1000km+ driving range performance in its cars.

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