Ge Chu, Chaohui Wang, Zhewei Yang, Lin Qin, and Xin Fan, MOF-derived porous graphitic carbon with optimized plateau capacity and rate capability for high performance lithium ion capacitors, Int. J. Miner. Metall. Mater.,(2023). https://doi.org/10.1007/s12613-023-2726-2
Cite this article as:
Ge Chu, Chaohui Wang, Zhewei Yang, Lin Qin, and Xin Fan, MOF-derived porous graphitic carbon with optimized plateau capacity and rate capability for high performance lithium ion capacitors, Int. J. Miner. Metall. Mater.,(2023). https://doi.org/10.1007/s12613-023-2726-2
Research Article

MOF-derived porous graphitic carbon with optimized plateau capacity and rate capability for high performance lithium ion capacitors

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  • Received: 17 February 2023Revised: 12 August 2023Accepted: 15 August 2023Available online: 18 August 2023
  • The development of anode materials with high rate capability and long charge-discharge plateau is the key to improve performance of lithium-ion capacitors (LICs). Herein, the porous graphitic carbon (PGC-1300) derived from a new triplyinterpenetrated cobalt metal-organic framework (Co-MOF) is prepared through the facile and robust carbonization at 1300 oC and washing by HCl solution. The as-prepared PGC-1300 features an optimized graphitization degree and porous framework, which not only contributes to high plateau capacity (105 mAh g-1 below 0.2 V at 0.05 A g-1), but also supplies more convenient pathways for ions and increases the rate capability (128.5 mAh g-1 at 3.2 A g-1). According to the kinetics analyses, it can be found that diffusion regulated surface induced capacitive process and Li-ions intercalation process are coexisted for lithium ion storage. Additionally, LIC PGC-1300//AC constructed with pre-lithiated PGC-1300 anode and activated carbon (AC) cathode exhibits an increased energy density of 102.8 Wh kg-1, a power density of 6017.1 W kg-1, together with the excellent cyclic stability (91.6% retention after 10000 cycles at 1 A g-1).

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