China accelerates development of sodium-ion batteries.

VTV.vn - In China, a new race is accelerating in the battery industry with the expectation of reducing dependence on traditional lithium.

A sample of a sodium-ion battery, at first glance, doesn't look much different from a conventional lithium battery. But this battery technology is expected to solve very real challenges facing lithium batteries.

FAW Jiefang and battery manufacturer Hi-Na recently completed testing on a new sodium-ion battery-powered tractor truck, achieving several noteworthy results: The battery retained over 90% of its usable capacity in temperatures as low as -40°C; it can be fully charged in 20-25 minutes; and its lifespan under fast charging exceeds 8,000 cycles.

Meanwhile, CATL recently launched a sodium battery-based storage solution with significantly improved cold resistance, safety features, and cost- effectiveness, according to Xinhua News Agency.

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However, the root problem lies in the raw materials and supply chain. The China Quality News website points out that China's lithium reserves currently account for only about 5% of the global total, leading to a high dependence on imports. Meanwhile, sodium resources are much more abundant and can be extracted directly from seawater. Even so, these advantages do not mean that sodium batteries can immediately replace lithium batteries.

From an economic perspective, the development prospects of sodium batteries still largely depend on lithium prices and the maturity of the supply chain. The 21st Century Economy website quotes industry experts as saying that sodium batteries have great potential if lithium carbonate prices remain at their current high levels; however, if the price of this raw material falls below 70,000 yuan/ton, the potential for sodium batteries will be relatively limited.

Another limitation is that the energy density of current sodium batteries is generally still lower than that of common lithium batteries, making them less competitive in high-end electric vehicle segments. The China Energy Daily suggests that more suitable scenarios include energy storage, electric trucks, affordable urban vehicles, and cold climate regions.

Advances in the commercialization of sodium batteries are opening a new direction for the Chinese battery industry, where sodium batteries, while not yet a complete replacement, could become an important complementary component to lithium batteries in suitable segments.

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Source: https://vtv.vn/trung-quoc-tang-toc-phat-trien-pin-natri-ion-100260629110829093.htm