| abstract |
An electrode active material capable of providing an electrochemical element having a high operating voltage, a high capacity, and a high energy density is provided. The electrode active material of the present invention comprises poly-9,9-bis (alkoxycarbonyl) fluorene. When the electrode active material of the present invention is compared with a conventional electrode active material made of poly-9,9-dialkylfluorene which gives an electrochemical device having a high operating voltage, the capacity for p-doping is almost the same. , 9-dialkylfluorene does not have a capacity for n-doping, whereas the electrode active material of poly-9,9-bis (alkoxycarbonyl) fluorene of the present invention does not have n-doping capacity. And high capacity. Therefore, by using the electrode active material of the present invention as a positive electrode active material and / or a negative electrode active material, an electrochemical device having a high operating voltage, a high capacity, and a high energy density can be obtained. [Selection figure] None |