Applications of Novel Carbon/AlPO<sub>4</sub> Hybrid-Coated H<sub>2</sub>Ti<sub>12</sub>O<sub>25</sub> as a High-Performance Anode for Cylindrical Hybrid Supercapacitors LeeJeong-Hyun LeeSeung-Hwan 2016 The hybrid supercapacitor using carbon/AlPO<sub>4</sub> hybrid-coated H<sub>2</sub>Ti<sub>12</sub>O<sub>25</sub>/activated carbon is fabricated as a cylindrical cell and investigated against electrochemical performances. The hybrid coating shows that the conductivity for the electron and Li ion is superior and it prevented active material from HF attack. Consequently, carbon/AlPO<sub>4</sub> hybrid-coated H<sub>2</sub>Ti<sub>12</sub>O<sub>25</sub> shows enhanced rate capability and long-term cycle life. Also, the hybrid coating inhibits swelling phenomenon caused by gas generated as decomposition reaction of electrolyte. Therefore, the hybrid supercapacitor using carbon/AlPO<sub>4</sub> hybrid-coated H<sub>2</sub>Ti<sub>12</sub>O<sub>25</sub>/activated carbon can be applied to an energy storage system that requires a long-term life.