Sony prototyped a solid-state all-solid-state battery using an electrolyte. This is a thin-film type secondary battery in which a solid electrolyte is formed on a resin film, which is achieved through the development of a new positive electrode material. Not only does it have a high degree of freedom of shape, it can bend, etc., and it does not need to be subjected to a high temperature treatment at the time of production, which is expected to reduce the manufacturing cost. It is envisaged that small, thin wearable devices and flexible components that can handle bending will be put into practical use after several years of planning. Sony released the related results at the "56th Battery Symposium in Japan" opened on November 11th, 2015 (Lecture No. 2F17). The company published papers in academic journals on the trial production of all-solid-film type secondary batteries in 2014, but it was the first time that it was announced at battery seminars. Comparing with batteries originally using organic electrolytes, all-solid-state batteries using solid electrolytes have higher safety, and countries around the world are actively promoting related research and development. Sony's involvement in the future may also promote research and development of electrode materials and peripheral components. Sony introduced an amorphous cathode material developed for all-solid-state batteries and its performance evaluation results. The original all-solid-state thin-film secondary battery uses a crystalline material as a positive electrode active material, and thus requires a high-temperature film formation process, while the material developed by Sony is amorphous, and substrate heating is not required for film formation. Therefore, it is expected that most of the manufacturing process can be performed at room temperature. The positive electrode material uses a phosphoric acid-based lithium metal compound. The prototype used a polycarbonate film having a thickness of 400 μm as a substrate and was fabricated by using a sputtering device to laminate a positive electrode, a solid electrolyte, and a negative electrode. A thin film of LiPON is formed on the solid electrolyte, and the thickness of the electrolyte layer is about 500 nm. Ni, Mn, Co, Cu, Ag, and the like were evaluated as transition metal elements of the positive electrode material. The evaluation results of the prototype showed that the discharge capacity of the transition metal using Ni was the highest, and the capacity of the positive electrode active material per unit weight was 330 mAh/g, and a sufficiently high value was measured. Regarding the discharge rate characteristics, it is confirmed that the rapid charge and discharge of 30C can be performed. The trial-and-error cycle of the battery has been confirmed to be about 2000 cycles. The practical issue is how to suppress natural discharge. In the future, it is intended to further improve performance by improving characteristics and the like. (Reporter: Pengtian Hongshu) Camping Light,Camping Lamp,Rechargeable Camping Lights,Torch Lanterns,LED Tent Light Yuyao Flylit Appliance Co.,Ltd , https://www.flylitlight.com