Core Viewpoint - The article discusses the evolution and future prospects of solid-state batteries, highlighting their advantages over traditional lithium-ion batteries, particularly in terms of energy density, safety, and longevity. It outlines the current state of research, development, and commercialization of solid-state and semi-solid batteries in the automotive and consumer electronics sectors. Group 1: Solid-State Battery Development - Solid-state batteries are seen as a revolutionary technology that can potentially replace existing lithium-ion batteries due to their higher energy density and improved safety features [11][12][13] - The development of solid-state batteries has progressed through various stages, with significant advancements in materials and manufacturing processes expected by 2035 [14][15] - The energy density of solid-state batteries is projected to exceed 500 Wh/kg by 2030, making them suitable for future electric vehicles and other applications [11][12][32] Group 2: Market Trends and Industry Players - Major companies like CATL, BYD, and others are leading the charge in solid-state battery technology, with plans for mass production and commercialization by 2025-2030 [21][22][31] - The semi-solid battery market is expected to grow significantly, with several manufacturers already testing and preparing for commercial applications [29][30] - The automotive industry is increasingly adopting semi-solid batteries, with companies like NIO and others planning to integrate these technologies into their upcoming vehicle models [21][22][30] Group 3: Technical Challenges and Innovations - Key challenges in solid-state battery development include manufacturing costs, complex processes, and the need for a mature supply chain [31][32] - Innovations in materials, such as the use of sulfide and polymer electrolytes, are critical for enhancing the performance and safety of solid-state batteries [19][20][35] - The transition from liquid to solid-state electrolytes is expected to mitigate risks associated with dendrite formation and improve overall battery stability [11][12][19] Group 4: Applications and Future Outlook - Solid-state batteries are anticipated to play a crucial role in various applications, including electric vehicles, consumer electronics, and aerospace [28][30] - The demand for high-performance batteries in emerging sectors like eVTOL (electric vertical takeoff and landing) is driving research and development in solid-state technologies [28][30] - The global market for solid-state batteries is projected to expand rapidly, with significant investments from both private and public sectors aimed at achieving commercial viability [31][32][33]

Group 1 - The core viewpoint of the articles emphasizes the importance of proper battery management to prolong the lifespan of electric vehicle batteries, highlighting common misconceptions about charging practices [1][2][4][10][13] - As of the end of 2024, the total number of new energy vehicles in China is expected to reach 31.4 million, accounting for 8.90% of the total vehicle population, with pure electric vehicles making up 70.34% of new energy vehicles [1] Group 2 - Overcharging lithium batteries can lead to the formation of "dead lithium," which reduces overall battery capacity and can cause structural instability in the battery [4][9] - It is recommended to charge lithium batteries to a range of 80%-95% to balance charging speed and battery longevity, while lithium iron phosphate batteries can be fully charged periodically for voltage calibration [9][10] - Deep discharging batteries to very low levels can cause irreversible damage to the battery's structure, leading to a significant reduction in usable capacity [10][12] Group 3 - Fast charging technologies, while convenient, can negatively impact battery health if not managed properly, as they can lead to overheating and the formation of lithium dendrites [14][18] - Effective thermal management during high-speed charging is crucial to prevent battery degradation, as elevated temperatures can convert lithium ions into dead lithium [18]

Core Viewpoint - A new in-situ monitoring technology based on integrated electrochemical sensing has been developed by researchers from the University of Science and Technology of China, which allows for high-precision pressure monitoring in lithium-ion batteries without additional packaging [1][3]. Group 1: Technology Development - The new technology utilizes the electrolyte and materials of lithium-ion batteries to construct a sensing interface, addressing the limitations of traditional implanted fiber optic monitoring methods, which are large and fragile [1][3]. - This integrated electrochemical sensing technology can respond to pico-level changes in expansion force and can operate stably within the battery for over one month [3]. Group 2: Application and Benefits - The technology captures irreversible deposition of lithium dendrites through asymmetry in pressure curves and peak changes, providing early warning and precise monitoring capabilities [3]. - The findings from accelerated aging experiments over 400 cycles show a strong correlation between pressure changes and capacity degradation, indicating the technology's effectiveness in monitoring battery health [3]. Group 3: Market Implications - This technology opens new pathways for smart battery design, particularly suitable for battery management systems in electric vehicles due to its low cost, high precision, and long lifespan [4].