2025-05-26
For commercial and industrial energy storage use, safety is always the top priority. Although traditional lithium batteries are mature, their risk of thermal runaway is still a concern for the majority of users. In recent years, semi-solid-state batteries have emerged as a strong contender as an alternative, with high safety and performance that is constantly improving. Can they really be the next big thing in safe energy storage, however? Let's examine it from the perspective of Shanghai Huijue.
As the name would suggest, semi-solid-state batteries are a compromise between traditional liquid lithium batteries and all-solid-state batteries. Their key features:
"Semi-Liquid" Electrolyte: Blends the use of a solid electrolyte + small amount of liquid electrolyte, with a trade-off of safety and conductivity.
Better Materials: Employs more stable electrodes (e.g., oxide-based solid electrolytes) to reduce fire risks.
Structural Improvements: Stacked cell designs are used by some manufacturers to minimize short-circuit risks.
Compared with conventional lithium batteries, they're far more heat-resistant, meaning no fire or explosion no matter what extreme circumstances occur, like overheating or piercing.
Commercial and industrial energy storage demands safety, longevity, and reliability in severe environments—and semi-solid-state batteries are exactly what they've been waiting for.
Traditional lithium batteries use flammable liquid electrolytes, while semi-solid-state batteries greatly eliminate thermal runaway risks.
At Shanghai Huijue, we’ve observed that semi-solid-state batteries perform more reliably in high-temperature or overcharging scenarios, making them ideal for data centers, factories, and shopping malls where safety is critical.
Semi-solid-state batteries typically last 6,000+ cycles, far exceeding standard lithium batteries (3,000–5,000 cycles).
For businesses, this means lower long-term costs per kWh (LCOS) and better ROI.
Operates smoothly in -20°C to 60°C, perfect for outdoor storage or harsh climates.
Pairs well with solar/wind power, maximizing renewable energy use.
Despite the advantages, there are two major challenges:
Semi-solid-state batteries are 30–50% more costly than LFP batteries currently. However, with producers like Ganfeng Lithium, WeLion, and QuantumScape ramping up production, costs should come down by 2025.
Interface resistance affects fast-charging capability—material improvements are needed.
Supply chain (e.g., LLZO solid electrolytes) is not yet fully mature.
However, with growing demand for safer energy storage, semi-solid-state batteries are gaining momentum. Tesla, CATL, and QuantumScape are already investing heavily, so expect considerable advancements within 3–5 years.
As an energy storage solution provider, we believe:
Short-term: Pilot projects in high-safety environments (data centers, chemical plants).
Mid-term: Pair with solar + storage to realize highest ROI by maximizing battery life.
Long-term: Keep an eye on all-solid-state batteries for even better energy density and safety.
With improved safety, longer lifespan, and durability in harsh weather, semi-solid-state batteries are set to transform industrial energy storage. While costs are high at present, mass production and tech advancement will likely make them a go-to choice in 3–5 years.
In business, safety cannot be sacrificed—and semi-solid-state batteries may just hold the key to worry-free energy storage.
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