Focus: Dalian Institute of Chemical Technology has developed a new process for preparing flexible batteries

　　The active material coated inside the battery is a key component of the battery's operation. Because of the fixed shape of the traditional battery, the combination between the active material and the conductive substrate is relatively strong.

　　The active material coated inside the battery is a key component of the battery's operation. The traditional battery has a fixed shape and the active material is relatively firmly bonded to the conductive substrate. However, when the battery is flexible, the coated active material is likely to fall off, which affects the normal use of the battery. In recent years, flexible wearable electronic devices and concepts have been rapidly developed, and it is an urgent problem to develop flexible devices to prepare batteries that do not fall off the internal active materials when they are bent.

　　Recently, the Energy Storage Technology Research Department of Dalian Institute of Physics of the Chinese Academy of Sciences reported a new process for preparing flexible batteries. They used electroless plating technology to achieve direct and firm bonding of active materials and conductive substrates. When the battery is bent arbitrarily, the active materials will not be produced. Falling off, showing good flexibility, the battery can be applied to bendable electronic equipment. Electroless plating technology is a relatively mature surface coating technology, which is widely used in chemical, aviation, medical equipment and other fields. This technology has the advantages of uniform coating, flexible and diverse composition, and suitable for non-metal substrates. In traditional batteries, the active material is coated on a conductive substrate with a binder. The scientific research team changed the coating method and plated a metal film on the active material through electroless plating technology. The process technology has the advantages of low preparation cost and easy practical application, which lays the foundation for the industrialization of flexible batteries in the future. The above work was published on "Advanced Functional Materials".