fig9

Figure 9. Solutions by improving the degree of graphitization of biomass carbon. (A) TEM and SAED images of HT-1500; (B) Raman spectra of the water chestnut-based hard carbon at different carbonization temperatures; (C) Cycling performance of the water chestnut-based hard carbon at various carbonization temperatures; (D) Rate performance of the water chestnut-based hard carbon at multiple carbonization temperatures; (E) Preparation progress of MDF-Fe carbon; (F) Degree of graphitization of Fe-catalyzed MDF and uncatalyzed MDF carbon; (G) Rate performance of MDF-Fe carbon by pyrolysis between 850 and 2,000 °C. (A-D) are quoted with permission from Wang et al.^[133]; and (E-G) from Gomez-Martin et al.^[135].