Influence of the electrolyte and binder on the electrochemical performance. The choice of electrolyte and binder has a direct impact on the practical capacity and stability of the electrode, as it can affect the solubility and efficiency of active sites utilisation. For example, optimising the nature and concentration of the electrolyte can lead to significant improvements in capacity and cycling stability. Very recently, we have reported the first comprehensive study of the influence of the electrolyte and binder on the performance of the an anthraquinone-based DAAQ-TFP-COF. Our results showed that the worst performance was obtained when LiPF6 in carbonate solvents was the electrolyte, due to the higher solubility of the active material and undesired side reactions. On the contrary, the best capacity retention was obtained when using LiFTSI as electrolyte in ether-based solvents (Fig. ). The electrochemical performance was further improved by substituting PVdF for PTFE as the binder, resulting in practical capacities close to the theoretical one and high capacity retention (99% after 100 cycles). One of the main reasons for the improved performance when using PTFE as a binder is its porous structure, which can lead to better ion diffusion and accessibility to the active sites. Therefore, in addition to the proper design and processing of the active material, the selection of the appropriate electrolyte and binder is critical to achieve optimal performances in COF-based batteries. Hybridisation with conductive additives. As discussed above, the rate capability depends on the electronic conductivity of organic electrodes. However, most organic compounds are insulators (σ < 10 -9 S cm -1 ) and their low intrinsic electronic conductivity limits the performance of batteries based solely on organic active materials. For this reason, electroactive organic compounds are usually mixed with large amounts (typically from 30 to 70% in weight) of conductive additives (e.g., carbon black), significantly reducing the specific capacity and energy density of the organic electrode. It is therefore necessary to subtract capacity contributions from carbon black and other conductive additives to determine the real specific capacity of the active material as well as calculating the energy density taking into account the mass of the whole electrode.