Dual‐Interfering Chemistry for Soft‐Hard Carbon Translation toward Fast and Durable Sodium Storage

Abstract Direct pyrolysis of low‐cost and resource‐abundant pitch generally produces highly graphitized soft carbon, showing low reversible capacity and a negligible charge‐discharge plateau owing to its unsuitable microstructure for sodium storage. Herein, for the first time, an innovative dual‐interfering chemistry strategy is proposed to solve the soft‐hard carbon translation challenge. Multifunctional zinc gluconate generates dual‐mechanism interference upon decomposition and successfully regulates pitch pyrolysis: 1) the gas decomposition products (carbon oxides) may consume excess hydrogen to realize fusion‐to‐solid‐state pyrolysis of pitch, hindering microcrystalline ordering; 2) the solid compounds…

• NN
  National Natural Science Foundation of China

  Awards: 51933007, 52273250
• SK
  State Key Laboratory of Polymer Materials Engineering

  Award: sklpme2020‐1‐02
• NS
  Natural Science Foundation of Sichuan Province

  Award: 2022NSFSC0248