| 摘要 |
Provided are a composition silicate anode material and a preparation method for the same, a lithium battery and a preparation method for the same, a lithium battery anode and a preparation method for the same, and a communication device. The composition silicate anode material comprises nano-silicate whose general formula is Li2MSiO4, a conductive agent, and a functional polymer wrapping the surfaces of the nano-silicate and conductive agent, wherein M is at least one element of Co, Mn, and Fe, and the functional polymer contains excessive metal ion chelating functional groups. The lithium battery anode, the lithium battery, and the communication device all contain the composition silicate anode material. The composition silicate anode material of the present invention can effectively capture, through chelation of the functional groups, impurity metal ions dissolving out of the nano-silicate, and suppress and prevent dissolving-out and migration of the impurity metal ions, thereby improving the security and capacity of the lithium battery, enhancing the circulation performance and high-temperature storage performance of the lithium battery, and prolonging the service life of the lithium battery. |
