Three Dimensional Composite Structure Manufacturing Method For Lithium Battery

Lithium ion battery(LIB) has become the most promising and competitive secondary battery because of it has the advantage of high voltage, high energy density and efficiency,long cycle life, little self-charge, no memory effect and pollution-free. Conventional LIBs generally use graphite as the anode material. However, LIBs with graphite anodes could not meet the demand of the development of daily life due to the low theoretical capacity(372m Ah/g). So it is essential to develop a new anode material with high capacity, long cycling life, and safety. And transition metal oxides has been focused as an ideal candidate due to its relatively high theoretical capacity.The paper studies the manufacturing method for the electrode of the LIBs, mainly focused on manufacturing the three dimensional composite structure of transition metal oxide. The main contents are as follows.First, we manufacture the three dimensional composite structure of transition metal oxide and observe the morphology, and speculate the effect of morphology on the electrochemical properties of the electrode.Then, we package the electrode on the analog button cell and tests its capacity,charge-discharge characteristics and rate electrochemical. And then we analysis the effect of three dimensional composite structure on the electrochemical properties of the electrode.Besides, we manufacture the electrode for flexible batteries, and design a proper way of packaging flexible batteries. And then we tests its electrochemical properties to explore the application of three dimensional composite structure on flexible battery fields.