LICs), also denominated as lithiumion hybrid supercapacitors, which bridge the gap between lithium-ion batteries (LIBs) and supercapacitors (SCs), have been widely investigated in electrical energy storage systems as well as other metal-ion capacitors (K, Na). [2] In common sense, ion absorption/deabsorption occurs in the positive electrode surface whereas the Li + intercalation/deintercalation reaction happens in the negative electrode during charge/discharge process in LICs. The power density is mainly determined by the negative electrode, considering that the absorption/deabsorption process is much faster than the ion intercalation/ deintercalation reaction. [3] Thus, selecting an appropriate anode material plays a predominant role in terms of achieving highperformance LICs system. Among all the reported potential anode materials (e.g., hard carbon, soft carbon, and Li 4 Ti 5 O 12 ), graphite, particularly graphitic mesocarbon microbead (MCMB), is the most prevalent candidate due to its relative high reversible capacity and marvelous plateau capacity below 0.2 V. [4] Commonly, graphite can be obtained through heat treatment at high temperature (above 2000 °C). Nevertheless, the ultrahigh-temperature treatment makes the process energy consumed and the as-obtained graphite possesses poor rate capability, both of which restrict its further application in LICs for higher power density demand. Hard carbon used as anode for LIC shows a slope shape and delivers low plateau capacity. Therefore, it is of great importance to develop an energy-saving method to produce carbon anode that possess both high plateau capacity as well as excellent rate capability. [3b,5] Porous graphitic carbons (PGCs) composed of graphitic phase and amorphous phase reveal their strengths in energy storage fields, benefiting from the high plateau capacity of graphitic phase and the superior rate performance of amorphous phase and porous structure. [2f,4,6] Catalytic graphitization provides an effective precept by structural design to achieve high-graphitization domains surrounded by amorphous phase. [7] Furthermore, the graphitization degree can be easily controlled by adjusting the catalyst and temperature. In order to achieve satisfactory catalytic effect during the graphitization process, Lithium-ion hybrid supercapacitors (LICs) are considered as a promising candidate in energy storage systems. Taking the factor of sluggish kinetics behavior, battery-type anode plays a significant role in improving the performance of LICs. Here, onion-shaped graphene-like derivatives are synthesized via carbonization of metalorganic quantum dots (MQDs) accompanied with in situ catalytic graphitization by reduced metal. Notably MQDs, exhibiting water-soluble character and ultrafine particles (2.5-5.5 nm) morphology, are prepared by the amidation reaction. The carbonized sample exhibits highly graphitic tendency with graphitization degree up to 95.6%, and shows graphene-like porous structure, appropriate amorphous carbon decoration characteristic, as wel...
