Abstract: Carbonyl compound has attracted great interest as the electrode material of polymer rechargeable battery owing to its potentially low-cost, sustainable, fast electrochemical reaction kinetics and multi-electron transfer capabilities. Among various carbonyl compounds, anthraquinone has been widely investigated in the past few years due to its excellent electrochemical stability and unique aromatic properties. Common anthraquinone materials often suffer from loss of capacity due to their low electronic conductivity and solubility in the organic electrolyte, which negatively affect the rate performance and cycling stability. Therefore, it is still challenging to develop anthraquinone based electrode with superior electrochemical performance. Many strategies have been attempted to address the above issues. Among them, the polymerization has been proved to be an effective strategy to reduce the solubility. Moreover, incorporating conductive additive with high specific surface area to form composites has also been demonstrated as an efficient approach to suppress dissociation dissolution and improve the electron transport in electrodes. Herein, a novel composite electrode material poly1,5-anthraquinone-coated carbon nanotube (CNT@P15AQ) was prepared via facile in-situ polymerization. After polymerization, the stability of anthraquinone in the organic electrolyte is significantly improved. In addition, the introduction of CNT can construct long-range electron transport pathways. Satisfactorily, the first discharge specific capacity of CNT@P15AQ composite electrode with 29% CNT mass fraction can reach 241.7 mA·h/g at a current density of 50 mA/g, which is 1.44 times higher than that of P15AQ. Meanwhile, the CNT@P15AQ composite electrode also exhibits excellent rate performance and cycle stability, which exhibits a reversible specific capacity of 148.5 mA·h/g at 10 C and retains 84.7% of its initial discharge capacity after 100 cycles at 1 C. High-performance CNT@P15AQ composite electrode with simple preparation method provides a broad application prospect of the next generation of rechargeable battery based on polymer electrode.