Achieving All‐Plateau and High‐Capacity Sodium Insertion in Topological Graphitized Carbon

Abstract Hard carbon anodes with all‐plateau capacities below 0.1 V are prerequisites to achieve high‐energy‐density sodium‐ion storage, which holds promise for future sustainable energy technologies. However, challenges in removing defects and improving the insertion of sodium ions head off the development of hard carbon to achieve this goal. Herein, a highly cross‐linked topological graphitized carbon using biomass corn cobs through a two‐step rapid thermal‐annealing strategy is reported. The topological graphitized carbon constructed with long‐range graphene nanoribbons and cavities/tunnels provides a multidirectional insertion of sodium ions whilst eliminating defects to absorb sodium ions at the high…

• NN
  National Natural Science Foundation of China

  Awards: 52101265, 51971124, 52171217