Core Viewpoint - The article discusses the rapid advancement of polymer-based solid-state batteries, highlighting their unique advantages in performance, manufacturability, and industrial adaptability, positioning them as a leading technology route in the solid-state battery industry [2][3]. Group 1: Performance Breakthroughs - Ionic conductivity has successfully surpassed the critical threshold of 10⁻³ S cm⁻¹ at room temperature through polymer molecular structure design [5]. - The electrochemical stability window has been expanded to 5V by employing main-chain antioxidant modification techniques and in-situ construction of the cathode-electrolyte interface (CEI) [6]. - Thermal stability has been enhanced, with the decomposition temperature of the electrolyte exceeding 200°C, while also exhibiting excellent flame-retardant properties and mechanical strength [7]. Group 2: Manufacturing Advantages - The polymer electrolyte can be directly applied to existing lithium-ion battery manufacturing processes, with equipment modification costs only one-tenth of other solid-state battery processes [9]. - The viscoelasticity of polymers allows for dynamic adaptation to electrode volume changes, resulting in a lower interface impedance growth rate by 1 to 2 orders of magnitude compared to inorganic solid electrolyte systems, enabling charge and discharge without external pressure [10]. - Over 90% of polymer raw materials can be shared with the existing chemical industry chain, eliminating reliance on scarce strategic metals, thus providing strong support for large-scale production [11]. Group 3: Challenges Facing Inorganic Systems - Inorganic systems face significant manufacturing challenges, requiring inert gas atmospheres or extremely low humidity environments, and high-temperature sintering processes that increase energy consumption by 5-8 times compared to lithium-ion batteries [12][13]. - Interface instability and high interface impedance due to rigid contact are major issues for inorganic systems [12][13]. - Safety concerns arise from the combustibility of sulfide electrolytes and the potential for lithium dendrite formation due to cracking [12][13]. Group 4: Commercialization Path Comparison - The polymer system can smoothly integrate with the existing industrial ecosystem through incremental technological improvements, while the inorganic system requires a complete overhaul of infrastructure and supply chains [14][15]. - Capital investment for dedicated production lines for inorganic systems can reach $100-200 million per GWh, which is 10-15 times higher than that for polymer routes [15]. - The supply chain integration cycle for inorganic systems is approximately 5-8 years, exceeding the 3-5 year technology iteration cycle of automotive companies [16]. Group 5: Industrialization Prospects - Polymer-based solid-state batteries are rapidly developing along a path of "improvement—replacement—exceeding," while inorganic systems still face systemic bottlenecks from material innovation to infrastructure [19]. - Based on the current technology maturity curve, polymer-based systems are expected to achieve large-scale application by 2026, becoming the mainstream solution for solid-state batteries [19].