Molecular-level precursor regulation strategy aids fast-charging hard carbon anodes for sodium-ion batteries

Hard carbon is commonly used as an anode material of sodium-ion batteries (SIBs), but the slow kinetic process limit its commercial scale, so the enhancement of kinetic process through modification of structure is the key to achieve a high-performance anode. Here, microwave-assisted synergistic acid treatment, targeting regulation for the content of each component in the natural lotus peduncle to change spatial structure of the resultant hard carbon, and the introduction of microwaves can accelerate reaction process, highly efficient decomposition of hemicellulose and lignin. The optimal lotus peduncle-derived hard carbon with excellent rate capability and cycling stability was obtained, possessing a high…

• NN
  National Natural Science Foundation of China

  Awards: 52402302, kq2402017, 52250710680
• NS
  Natural Science Foundation of Hunan Province

  Award: 2023JJ30034
• SR
  Scientific Research Foundation of Hunan Provincial Education Department

  Award: 23B0295
• NS
  Natural Science Foundation of Zhejiang Province

  Award: LQ24E020001