fig2

Figure 2. (A) Schematic of the non-graphitized carbon structural model proposed by Franklin in 1951^[34] (Copyright 2018, Elsevier Ltd). (B) Schematic of the non-graphitized carbon structural model proposed by Ban in 1974^[34] (Copyright 2018, Elsevier Ltd). (C) Schematic of the “Schwarzite” structural model proposed by Townsend in 1992^[34] (copyright 2018, Elsevier Ltd). (D) The “House of Cards” model was proposed by Stevens and Dahn in 2000^[20] (Copyright 2015, American Chemical Society). (E) The optimization model for Franklin's non-graphitized carbon structure was proposed by John in 2016^[101] (Copyright 2016, American Chemical Society).