The Preparation,Structure And Properties Of Array Structure Composites Based On Lithium Ion Batteries

Batteries have become the most important device in our daily lives,where electrochemical energy storage and conversion exist in battery applications.With the development of science and technology,the battery life of the battery is longer and higher safety performance becomes more and more important.However,the battery performance is mainly determined by the anode material,so recent studies have focused on exploring new materials and modify existing materials to show great interest.The Co₃O₄,Co₃O₄ / PANI core-shell nanorod arrays and the hollow nickel microtube/carbon nanospheres core–shell arrays were prepared by chemical bath deposition,electrodeposition and hydrothermal methods on different nickel bases.The structures of these three materials were analyzed by XRD and Raman,and the morphologies of the these three materials were analyzed by scanning electron microscopy（SEM）.And the preparation of the electrodes without using organic solvents and adhesives was studied.In the case of direct use in the glove box filled with nitrogen assembled into the test electrode,while testing the cycle and the rate performance.For the Co₃O₄,Co₃O₄/PANI nanorod arrays electrode structure and composition analysis can be obtained,Co₃O₄ nanorod arrays successfully by a thin layer of the conductive coating of polyaniline.The cyclic voltammograms,cyclic curves and rate properties of Co₃O₄,Co₃O₄/PANI nanorod arrays electrodes were investigated,and the electrochemical performance of the electrode was investigated.The Co₃O₄/PANI core-shell structure nanorod arrays electrode exhibits higher charge-discharge capacity and better cycle performance than the Co₃O₄ nanorod arrays electrode for these two kinds of binder-free anode materials.Compared with Co₃O₄/PANI core-shell nanorod arrays electrode,the capacity of Co₃O₄ nanorod arrays electrode is higher than that of Co₃O₄ nanorod array electrode at each current density,which shows better performance.The Co₃O₄/ PANI core-shell structure nanorod array electrode can be improved electrochemical properties of the factors may be attributed to the array structure in its molecular chain between the sufficient storage of lithium ions,while polyaniline good conductivity And stability can accommodate the volume change of the Co₃O₄ nanorod arrays during cycling,resulting in increased cyclic stability and increased capacity.From the above analysis,it can be concluded that Co₃O₄/ PANI core-shell structure nanorod array electrode has great potential as high-performance reusable lithium battery.Cyclic voltammetric curves,cyclic curves and magnification properties of the hollow nickel microtube/carbon nanospheres core–shell arrays electrodes were investigated.The results show that the core-shell array electrode of the hollow nickel microtube/carbon nanospheres core–shell arrays prepared in this chapter exhibits excellent electrochemical lithium storage performance and cyclic stability.And for the different current density of the rate performance,the other current density in the cycle of its energy can remain relatively stable.The reason for the relatively superior electrochemical performance is also summarized in this paper,which is mainly attributed to the large gap between the micrometer rods in the prepared nickel micrometer rods and the contact between the carbon nanospheres and the electrolyte and the larger void structure Which can withstand the volume expansion and contraction of the lithium intercalation or deintercalation process.The carbon nanospheres have excellent electroconductivity,and these excellent structural properties make the electrochemical lithium storage of the electrode material and the stability of the cycle more stable.