Fabrication of Intricate Porous Structures in Coal Tar Pitch Based Carbons Using SiO2 and Na2CO3 as Dual Templates (Supporting Information)

With unfolding the large scale energy storage, expanding the electrodes with high Li+ storage capacity and cost-effectiveness features is becoming a significantly hot research topic. According to the double-template method, carbon anode materials having high storage capacity were successfully prepared by using the coal tar pitches, Na2CO3 and SiO2. It is intriguingly observed that the two templates manifest the different roles constructing the structures of carbon materials. Meanwhile, the fabricated CTPC-1-2 material possesses the three-dimensional porous, and its pore size distributions are in a range (3.94–16.14 nm). After cycling 100 times, the CTPC-1-2 shows the Li+ storage capacity of 611.3 mAh g−1 at a current density of 0.1 A g−1. The Li+ storage capacity accomplishes 250.6 mAh g−1 at a large current density of 1 A g−1, after cycling 500 times. These results indicatethat only using the coal tar pitches is able to fabricate the carbon materials with the high Li+ storage capacity, which provides a new idea for enlarging the application of coal tar pitches in the domains of the fabrications of anode materials.