Carbon Ene-yne (CEY), a novel two-dimensional full carbon material, was synthesized from tetraethynylethene. Compared with the traditional preparation method of carbon materials, CEY was synthesized by chemical method in solvent-phase under mild condition (low temperature, atmospheric pressure). Diyne of CEY were connected through vinyl groups which is help for π-electron transition, thus this new material exhibits excellent electronic property. Small band gap of 0.05eV was predicted for CEY, and high conductivity of CEY film is up to 1.4×10−2 S/m which facilitates its application in electronic devices. Lithium-ion batteries featuring CEY-based electrode exhibit excellent electrochemical performance, including high specific capacities, outstanding rate performances, and a long cycle lives. We obtained a much high and reversible capacities of up to 410mAh/g even after a long-term cycling at a high current density of 748mA/g. Additionally, prepared by our mild solvent-phase chemical method, CEY might be a new star as a versatile materials for many electrochemical applications.