Reliable and sustainable energy storage systems are greatly required considering the fast-rising energy demand and the transition away from traditional fossil fuels towards renewable energy sources. Among available sources of energy storages, lithium-ion batteries (LIBs) are one of the most researched and used energy storage technologies now in use for dependable and efficient energy storage. Also, LIBs serve as the main energy source for an increasing number of electric cars and portable electronics. While research in LIBs have progressed to a great extent, the basic idea for the research remains the same: decrease in the size of the battery, making the battery affordable and safe to use, and to increase the cyclic durability. Typically, an anode, a cathode, a porous separating membrane and an electrolyte form the constituents of an LIB. The electrodes (cathode and anode) facilitate the movement and storage of the lithium ions through the conducting electrolyte. The porous separating membrane acts as a physical barrier to avoid contact between the cathode and anode while allowing movement of ions to prevent thermal runway. Conventionally, lithium transition metal oxides (LiCoO2, LiMnO2, LiNixCoyMn1-x-yO2, etc.) have been used as cathode materials. A major limiting factor of this group of materials to be used as cathode material is their inherent low theoretical capacity, recyclability and higher cost due to the presence of metal. Commercially used anode material, graphite, has a theoretical capacity of 372 mAh/g which is relatively high compared to conventionally used cathode materials. Therefore, a material that is specifically designed to achieve high theoretical capacity while maintaining excellent energy density and long-term cyclic stability is highly sought after. For LIB applications, a range of organic small molecules and polymers with redox-active functional groups have been investigated as high-performance electrode materials. However, the fact that these polymers and organic molecules can become soluble in the electrolyte over time limits their practical usability. In 2005, Yaghi and co-workers developed the first family of COFs which are porous, crystalline, polymeric materials synthesised through specific topological design. COFs are composed of lightweight elements like C, N, O, B, etc., connected by strong covalent bonds, hence, they have low density, high thermal stability and permanent porosity. COFs exhibit greater stability than other crystalline materials, such as metal-organic frameworks (MOFs), in solvents and harsh conditions. This stability provides a significant advantage when used as a cathode in electrochemical cells, as it minimizes the risk of electrode material dissolution into the electrolyte over time. The lightweight elements that form the backbone of COFs contribute to their higher energy density. The intrinsic ordered structure of COFs, which imparts crystallinity, facilitates ion transport through well-defined channels, thereby enhancing the performance of cathode materials. Most synthesized COFs have been developed using reversible reactions, such as Schiffbase reactions, while COFs synthesized via irreversible reactions remain in their infancy.