Abstract: A silicon-carbon composite material, a preparation method thereof, and a secondary battery are provided. The silicon-carbon composite material includes a silicon-carbon composite core and a carbon coating layer coated on the silicon-carbon composite core, and multiple closed pores are dispersed in the silicon-carbon composite core. The preparation method includes steps of (I) a surface modification treatment of a high-molecular polymer, (II) a preparation of a nano-silicon dispersion, (III) a preparation of a first precursor, (IV) a preparation of a second precursor, and (V) carbon coating. The closed pores in the silicon-carbon composite core can effectively alleviate the significant volume effect of silicon generated during lithium intercalation and deintercalation, and the combination of the silicon-carbon composite core and the carbon coating layer can ensure structural stability and high strength of the material.

Abstract: According to an example, a detecting AP may determine whether a rogue AP is in the wireless network. In response to a determination that a rogue AP is in the wireless network, the detecting AP may obtain a wireless channel of the rogue AP and according to the wireless channel of the rogue AP, the detecting AP may transmit on the wireless channel of the rogue AP, a channel switch instruction to a client associated with the rogue AP by simulating an identity of the rogue AP. The channel switch instruction is to instruct the client to switch to a designated new channel.