Electrode optimisation is also key to improve the electrochemical performance of COF electrodes. For example, the proper choice of electrolyte and binder can significantly increase the practical capacity, whereas the preparation of COF composites with conductive carbon substrates can help to enhance the rate capability. However, the energy density can be reduced if the amount of conductive additives is excessive. The exfoliation of bulk COFs into nanosheets is another approach to increase the accessibility of active sites. However, there is still a need for more straightforward synthetic approaches with improved yield and thickness control towards large-scale applications. Systematic studies for each of these strategies will be useful in order to optimise the composition and processing of COF electrodes.