固态峰会回顾 | 5位行业大咖描绘应用前景

Core Viewpoint - The article discusses the advancements and challenges in solid-state battery technology, highlighting the potential for significant growth in various applications, particularly in the electric vehicle and energy storage sectors. Group 1: Industry Events - The 18th High-tech Lithium Battery Industry Summit will focus on the restructuring of the industry chain and the resonance of all-scenario applications, scheduled for June 25-26, 2025, in Changzhou [4] - The 2025 High-tech New Energy Materials Industry Conference will explore AI and new materials leading energy transformation, set for July 8-9, 2025, in Chengdu [5] Group 2: Solid-State Battery Developments - Half-solid-state batteries have achieved a breakthrough from "0 to 1," with no core limitations in materials and applications, moving towards scale, maturity, and cost reduction [8] - Full solid-state batteries are expected to take 5-6 years to reach GWh-level production, with a breakthrough anticipated post-2028 [8] - By 2030, solid-state batteries are projected to drive demand for high-nickel and silicon-based materials exceeding 50,000 tons, electrolytes and conductive agents over 5,000 tons, and a market impact exceeding 10 billion [8] - The peak capacity construction period is expected between 2025-2026, with energy storage likely to be prioritized [8] - In 2025, shipments of half-solid-state batteries are expected to exceed 10 GWh, with an increasing share of lithium iron phosphate systems [8] Group 3: Challenges in Solid-State Battery Technology - Solid-state batteries face two main challenges: the solid-solid contact issue leading to low lithium-ion conductivity and the inability of single solid electrolyte materials to meet the demands of full solid-state batteries [9] - A proposed solution involves in-situ solidification, converting liquid electrolytes to solid through chemical or electrochemical reactions, enhancing contact with electrode particles [9] Group 4: Equipment and Safety Innovations - Li Yuan Heng has developed equipment to address ion transmission bottlenecks caused by solid-solid contact, including dry coating devices and integrated machines for electrolyte and electrode sheets [11][12] - A comprehensive safety design system has been established to mitigate the toxicity and flammability of sulfide batteries, ensuring production safety [12] Group 5: Aviation Battery Requirements - eVTOLs have emerged as the primary type of low-altitude aircraft, necessitating higher energy density for pure electric aviation batteries, with requirements exceeding 400 Wh/kg for a 300 km range [13] - Hybrid aviation batteries require energy densities over 200 Wh/kg and must operate in a wide temperature range of -35 to 80°C, with a cycle life of 2000 times to reduce battery replacement costs [13] - Significant advancements have been made in pure electric and hybrid aviation power batteries, achieving energy densities of over 360 Wh/kg and power densities exceeding 3900 W/kg [13] Group 6: Material and Process Innovations - Most electrode materials still rely on traditional wet processes, lacking adaptability to dry processing characteristics; a shift towards "process-oriented material design" is recommended [16] - The development of a second binder to reduce PTFE content while improving membrane performance is suggested to address lithium loss issues [16] - A fully automated production line capable of handling the entire process from feeding to film formation has been established, along with a laboratory for exploring dry process techniques for solid-state batteries [16]