First Application of Nitrogen-Doped Carbon Nanosheets Derived from Lotus Leaves as the Electrode Catalyst for Li-CO2/O2 Battery

The development of Li-CO2/O2 battery with high energy density and long-term stability is urgently needed to fulfill the carbon neutralization pollution-free environment targets. biomass-derived heteroatom-doped catalyst combination high-efficiency catalytic activity sustainable supply a promising cathode in battery. Specifically, unique morphology mesopore structure can promote transfer CO2, O2, Li+. Abundant channel pores provide discharge products accommodation largest extent. Nitrogen dopant, commonly recognized active sites carbon, improve electron conductivity accelerate sluggish kinetic reaction. Therefore, utilizing louts leaves as precursor, we successfully prepare cellular-like nitrogen-doped activated nanosheets (N-CNs) through appropriate pyrolysis carbonization method. as-synthesized display three-dimensional interconnecting pore abundant N-dopant actives, which dramatically electrochemical N-CNs. N-CNs delivers capacity 9825 mAh g−1, low overpotential 1.21 V, stable cycling performance 95 cycles. Thus, carry out facile method for N-doped preparation derived from cheap natural biomass, be effective environmental-friendly