Synthesis of Phenolic Resin Hard Carbon with Low Specific Surface Area and Its Electrochemical Properties
YANG Guo1,MA Zhuang2,YANG Shaobin1,DONG Wei1,SHEN Ding1
1 College of Material Science and Engineering,Liaoning Technical University,Fuxin 123000 2 School of Metallurgy Engineering,Liaoning Institute of Science and Technology,Benxi 117004
Abstract: This work presented a preparation approach for phenolic resin hard carbon with low specific surface area, which employed foaming method and took phenolic resin as raw material, N-Pentane as foaming agent. SEM, XRD, FTIR and N2 adsorption/desorption were adopted to characterize the surface morphology and structural features of the obtained hard carbon samples with various addition amount of foaming agents. Furthermore, the button half-cell was assembled by taking lithium metal as the electrode and the electrochemical performance of the half-cell was measured. According to results, with quality score is 20% of N-Pentane, the hard carbon sample exhibited the specific surface area of 1.62 m2·g-1, average pore size of 6.406 nm, d002 of 0.394 nm, La of 1.417 nm, Lc of 2.602 nm, and carbon yield of 45.05%. Regarding to the electrochemical performance, hard carbon sample with 20% N-Pentane held the first specific capacity of 318.7 mAh·g-1, initial coulomb efficiency of 68.9% at current density of 50 mA·g-1 and it also presented satisfactory cyclic stability and rate capacity.
杨果, 马壮, 杨绍斌, 董伟, 沈丁. 低比表面积酚醛树脂硬碳的制备及电化学性能[J]. 材料导报, 2019, 33(22): 3820-3824.
YANG Guo, MA Zhuang, YANG Shaobin, DONG Wei, SHEN Ding. Synthesis of Phenolic Resin Hard Carbon with Low Specific Surface Area and Its Electrochemical Properties. Materials Reports, 2019, 33(22): 3820-3824.