March 14, 2024
Global trends and developments in the solid-state battery industry
As the demand for electric vehicles (EVs) and renewable energy storage surges, solid state battery is increasingly capturing global attention due to its outstanding performance and potential market value. Often hailed as the “next-generation lithium battery,” solid-state batteries utilize solid electrolytes in place of traditional liquid counterparts, offering enhanced safety and energy density.
This rapid advancement in technology has sparked fierce competition among enterprises and research institutions worldwide. This article provides a comprehensive analysis of the current state of the global solid-state battery industry, highlighting key players, technological breakthroughs, and future market potential.
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The Rise and Advantages of Solid-State Batteries
Technological Background of Solid-State Batteries
Entering 2024, solid-state battery technology has drawn widespread interest in the market. On one side, Japanese battery giant Maxell has developed a cylindrical all-solid-state battery with a capacity 25 times that of traditional square batteries.
On the other hand, Power Co, a subsidiary of the Volkswagen Group, has completed endurance testing on QuantumScape’s solid-state batteries, revealing a potential lifespan of up to 500,000 kilometers, with 95% capacity retention after 1,000 charge-discharge cycles. These advancements strongly underscore the enormous potential of solid-state batteries.
Advantages of Solid-State Batteries
Solid-state batteries, which employ solid electrolytes, boast several key advantages:
- High Safety
The solid electrolytes are non-flammable, heat-resistant, and chemically stable, effectively suppressing lithium dendrite growth, thereby significantly enhancing battery safety.
- High Energy Density
With a wide electrochemical window that can withstand voltages above 5V, solid-state batteries can achieve energy density of a battery of 500 Wh/kg or even higher.
- Compact Size
By replacing the liquid battery electrolyte and separator with solid electrolytes, the distance between the anode and cathode can be reduced to a mere few micrometers, substantially decreasing the battery’s thickness.
- Wide Operating Temperature
Solid-state batteries can operate stably across a wide temperature range (-30℃ to 100℃), excelling in low-temperature environments and addressing the range issues faced by electric vehicles in winter.
Global Landscape of the Solid-State Battery Industry
Development in China
China leads in the solid-state battery sector, with numerous enterprises spanning traditional battery manufacturers, startups, and automotive companies. The country has witnessed a broad and steady advancement in the research and commercialization of solid-state batteries.
Currently, many Chinese companies focus on semi-solid-state batteries, some of which have been validated through installation in specific vehicle models and commenced small-scale production in 2023. More companies are expected to ramp up mass production of semi-solid-state batteries in 2024.
Japan’s Technological Strength
Japan has maintained a long-standing lead in solid-state battery research and development. Companies like Maxell are developing high-capacity all-solid-state batteries that offer 25 times the capacity of conventional batteries.
Simultaneously, the collaboration between Volkswagen and QuantumScape highlights excellent product durability. Japanese enterprises continue to hold a significant position in solid-state battery technology, thanks to their advanced material science and manufacturing processes.
Developments in the US and Europe
In the United States, the solid-state battery sector is primarily concentrated among startups that are vigorously exploring new materials and processes to achieve breakthroughs in solid-state battery technology.
Additionally, collaborations between European automakers and US startups are on the rise, fostering joint efforts in the research and commercialization of solid-state batteries. Large-scale commercialization of solid-state batteries in Europe is anticipated between 2026 and 2030.
Involvement of South Korea
Although South Korea has fewer solid-state battery companies, its materials technology capabilities are noteworthy. Battery makers such as LG Chem are steadily advancing their investments and research in solid-state batteries, positioning themselves for a stronger presence in the international market in the future.
Stages of Solid-State Battery Development
The development of solid-state batteries can generally be categorized into semi-solid (5-10 wt%), quasi-solid (0-5 wt%), and all-solid (0 wt%) stages. Currently, all-solid-state batteries are mainly in the research and pilot production phases, while semi-solid-state batteries, acting as a transitional technology, have made significant progress.
Semi-Solid-State Batteries
Semi-solid-state batteries utilize a solid-liquid mixed electrolyte, with liquid content ranging from 5-10%, augmenting coated solid electrolyte. Their electrochemical principles mirror those of liquid lithium batteries, allowing the use of established battery manufacturing processes, making production easier compared to solid-state batteries.
Currently, many Chinese companies focus on semi-solid-state batteries, with some having achieved small-scale validation through vehicle installation.
All-Solid-State Batteries
The industrialization of all-solid-state batteries still faces challenges, including immature material technologies, preparation techniques, and high production costs. The industry generally agrees that all-solid-state batteries will take at least five more years to reach large-scale commercialization. However, with ongoing technological advancements and gradual cost reductions, the market scale for all-solid-state batteries is expected to grow rapidly.
Market Size and Future Outlook
According to the “Global Solid-State Battery Industry Development White Paper (2024)” published by EV Tank, global shipments of solid-state batteries are expected to reach 614.1 GWh by 2030, with an anticipated penetration rate of around 10% within the overall lithium battery market, resulting in a market scale exceeding 250 billion yuan, predominantly driven by semi-solid-state batteries.
Key Technologies and Challenges
- Material Technology
The development of solid electrolytes is one of the core technologies of solid-state batteries. Currently, some enterprises have successfully developed solid electrolytes, with some at the pilot phase and others achieving small-scale supply. Overall, while the industrial scale for solid electrolytes remains small, it has a foundational basis for scaling.
- Preparation Technology
The preparation technology for solid-state batteries is still underdeveloped and requires further optimization, including material selection and processing improvements. Only by addressing these issues can the large-scale industrialization of solid-state batteries become feasible.
Conclusion
The global solid-state battery industry is at a pivotal stage, facing challenges related to material technology and production processes. However, its potential market value and safety advantages make it a crucial direction for future battery technology development.
As technology continues to advance and market demand expands, solid-state batteries will play an increasingly significant role in future electric transportation and energy storage systems. In this rapidly evolving market environment, businesses must seize opportunities, accelerate innovation, and ensure their place within the solid-state battery industry.
Read more: Top 10 installed capacity of power battery manufacturers in the world; Toyota solid state battery
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Willow
Willow is a materials engineer with a Master’s degree in Materials Science and Engineering, specializing in lithium-ion battery materials and energy storage technologies.
Her work focuses on EV battery swapping solutions, battery innovation, and new energy industry trends, aiming to translate research insights into practical applications for sustainable transportation.
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