CO2-Derived Porous Carbon-Metal Oxide Composite As a Lithium-Ion Battery Anode Material

As energy-related issues have emerged, lithium-ion batteries (LIBs) are widely commercialized in various electrical devices as environmentally friendly energy storage systems. Among anode materials in LIBs, metal oxides are studied as promising candidates because of their high theoretical capacity. However, some drawbacks of low electrical conductivity and volume changes bring limits to them to be used as anode materials. Thus, this study synthesized the composite of metal oxide with porous carbon to compensate the drawbacks of metal oxides. In the synthesizing process, carbon dioxide (CO₂), a representative greenhouse gas, was actively utilized in synthesizing the both porous carbon and metal oxide simultaneously. As a result, the porous carbon-metal oxide composite showed superior electrochemical performance when applied as an anode material, maintaining high capacities (~1100 mAh/g) over 300 cycles stably.