由 jpichiban 杰士汤浅计划在2030年前推出不使用石墨的锂离子电池，该电池将使用硅代替石墨。此举旨在减少对中国石墨的依赖，以提升经济安全。该公司将首先将这种新电池应用于船舶和飞机，并在未来扩展至电动汽车和混合动力汽车。杰士汤浅通过改进粘合剂和电解质来克服硅材料易劣化的问题，确保电池的稳定性和寿命。
Original Title: 杰士汤浅开发出不使用石墨的锂离子电池
Summary: GS Yuasa Corporation plans to commercialize lithium-ion batteries that do not use graphite for ships as early as 2030. Silicon will be used instead of graphite. China accounts for the majority of global graphite production, and Japanese battery giants are reducing the use of graphite due to economic security concerns. Toshiba is developing lithium-ion batteries that do not use graphite in the negative electrode material, but the attempt to fully replace graphite with silicon is rare.
GS Yuasa will first strive to achieve practical application in areas such as ships and aircraft. After practical application, if there is no significant degradation after repeated charging and discharging about 1,000 times, demand for automotive applications such as pure electric vehicles (EVs) and hybrid vehicles (HVs) will also be considered.
According to a survey by Techno Systems Research (located in Chiyoda-ku, Tokyo), GS Yuasa Group’s global share of the automotive lithium-ion battery market was 0.3% in 2023. GS Yuasa and Honda announced in 2023 that they will jointly invest 434.1 billion yen in pure electric vehicle battery development and the construction of new factories in Japan. While expanding production capacity, they will also develop new products with fewer economic security concerns, in order to increase their market presence.
Graphite, a major material for lithium-ion batteries, is usually used as the negative electrode material because it is safe and does not expand even when energized. However, in addition to the limit on capacity increase, China accounts for most of the production, which poses a procurement risk.
Silicon has been attracting attention as a substitute for graphite, but it also has the weakness of accelerating battery degradation. GS Yuasa will reduce the degradation rate by improving the adhesive of the connecting material and the electrolyte that assists in electrical exchange.
Original article: http://cn.nikkei.com/industry/scienceatechnology/56423-2024-08-26-05-00-10.html?print=1