A low-cost attempt to improve electrochemical performances of pitch-based hard carbon anodes in lithium-ion batteries by oxidative stabilization

作者：Zhao, Pin-Yi; Tang, Jia-Ji; Wang, Cheng-Yang^*

来源：Journal of Solid State Electrochemistry, 2017, 21(2): 555-562.

DOI：10.1007/s10008-016-3406-1

• Lithium-Ion batteries
• Hard carbon
• Pitch
• Oxidative stabilization

The electrochemical performance of low-cost, pitch-based hard carbon anodes in lithium-ion batteries is reported. Pitch-based hard carbon anodes were prepared, stabilized in air at 290 A degrees C for 1 h after different temperature programming, and then carbonized in N-2 at 1000 A degrees C. The optimal anode with temperature programming of 24 h had abundant oxygenic functional groups, a large interlayer space, and a stable morphology. When used as anodes in lithium-ion batteries after 100 cycles at a current density of 100 mA g(-1), the capacity was 258.6 mAh g(-1) with a capacity retention ratio of 90.6 %. This large capacity combined with the superior cycling performance indicates that prolonged oxidative stabilization is an effective strategy in improving electrochemical performances of lithium-ion batteries.

• 出版日期2017-2
• 单位天津大学