Hot Topic Analysis: Global Lithium Battery Giants Accelerate Solid-State Battery Development and Industrialization

On June 18, 2021, LG Energy Solution’s Asia Marketing General Manager revealed at the 2021 China Automobile Forum that LG Energy Solution is developing all-solid-state batteries, with mass production expected by 2026. In addition to LG Energy Solution, other global lithium battery leaders—including CATL, BYD, Samsung SDI, SK Innovation, and Panasonic—are also actively investing in solid-state battery development. 2. Solid-state batteries represent the future direction of lithium battery evolution. What exactly are the solid-state batteries being pursued by global lithium battery giants? Solid-state batteries are lithium-ion batteries employing solid electrolytes instead of liquid electrolytes and separators; fundamentally, they remain lithium batteries—only replacing the liquid electrolyte and separator with a solid electrolyte. Solid-state batteries feature non-flammability, high-temperature tolerance, corrosion resistance, and non-volatility. The solid electrolyte constitutes the core component of solid-state batteries, and the electrolyte material largely determines key performance parameters—including power density, cycling stability, safety, low- and high-temperature performance, and service life. In terms of operating principle, solid-state lithium batteries function identically to conventional lithium batteries. Their primary distinction lies in the use of a solid electrolyte, meaning lithium-ion transport occurs within this solid medium. Key advantages of solid-state batteries include higher energy density and superior thermal stability. Current liquid-electrolyte lithium batteries have nearly reached their theoretical energy density limits, whereas all-solid-state lithium batteries hold potential to exceed 500 Wh/kg—making solid-state batteries the clear future trajectory for lithium battery development. 3. The solid-state battery industry remains in its early stages. Globally, numerous manufacturers, startups, and academic research institutions—including universities and scientific research institutes—are engaged in solid-state battery technology development. However, commercially available, mass-produced solid-state battery products remain scarce, and industrialization is still in its infancy, with limited market-ready output. Domestically, leading Chinese solid-state battery enterprises—including ProLogium Technology, Ganfeng Lithium, QingTao Energy, Wanxiang EV Powertrain (Wanxiang Yiyisan), and Weilan New Energy—are constructing solid-state battery production lines; yet few have commenced volume production, and output remains low. For example, Xingying Technology’s first-phase solid-state power lithium battery project has an annual capacity of only 1 GWh. Internationally, Solid Power’s first-generation 2 Ah all-solid-state battery (ASSB) will not enter automotive applications until 2026. Not only are global battery manufacturers accelerating deployment, but major automakers—including BYD, NIO, Toyota, Hyundai, and BMW—are also actively participating in solid-state battery R&D and production initiatives. 4. Policy support will accelerate solid-state battery development. As the future direction of lithium battery evolution, solid-state batteries are receiving strong policy support from governments worldwide…

Where Exactly Are Solid-State Batteries Today? (Part I – Initial Draft)

Factorial Factorial × Stellantis Road-Testing Official Documentation Includes information on 77 Ah-class cells, vehicle integration, pack mechanical design, and road validation. Gotion High-Tech Official Technical Page for Jingshi All-Solid-State Battery | Gotion High-Tech Features latest disclosed data—including 400 Wh/kg energy density, sulfide-based solid electrolytes, and lithium sulfide. Academic Papers and Review Articles on Solid-State Batteries Compared with corporate press releases and media reports, peer-reviewed academic papers better address foundational questions: Why is solid-state battery development so challenging? How should laboratory-scale performance be properly evaluated? What truly constrains industrialization—material limitations or interfacial issues? And do seemingly impressive performance metrics hold up when scaled to large-format cells? Below is a summary of representative recent review articles and research papers published in top-tier journals—including Nature Energy, Nature Reviews Materials, Chemical Reviews, Energy & Environmental Science, and Energy Storage Materials. Overall Progress and Industrialization Bottlenecks of Solid-State Batteries 'Challenges in Speeding Up Solid-State Battery Development' | Nature Energy, 2023 Original Paper | Nature Energy An excellent foundational article for understanding the broader challenges facing all-solid-state battery commercialization. Authors Jürgen Janek and Wolfgang G. Zeier avoid oversimplifying the problem as merely 'finding solid electrolytes with higher ionic conductivity.' Instead, they comprehensively examine ion transport in composite cathodes, high-performance anodes, practical energy density, power capability, long-term cycling stability, and economic viability. A key contribution of this paper is its reminder: laboratories have already demonstrated that solid-state batteries 'can work'; the real challenge now lies in achieving stable, reliable operation at sufficiently high energy density, power output, cycle life, and cost-effectiveness.

J-Star Holding Updates on Baytown Solid-State Battery Facility Commitment

Jun 1, 2026

J-Star Holding Co., Ltd. announced progress on its 100MWh solid-state battery plant in Baytown, Texas, backed by a Letter of Intent and a proposed $60 million loan. The total project cost is estimated at $122.5 million.

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