出版日期：2025-05-30 00:00:00

著者：Kuen-Chan Lee; Jen-Hsien Huang; Wei Kong Pang; Kuan-Syun Wang; Shih-Chieh Hsu; Huei Chu Weng; Ting-Yu Liu

著錄名稱、卷期、頁數：Journal of Energy Storage 119, 116325

摘要：Lithium-ion capacitors (LICs), which integrate the complementary characteristics of electric double-layer capacitors (EDLCs) and lithium-ion batteries (LIBs) to achieve high energy density and power capability, have attracted substantial interest. Asphaltene, a challenging byproduct of crude oil extraction, can be transformed into a valuable material for energy storage applications through an appropriate activation process. In this study, undesired asphaltene was utilized as a carbon source to produce hierarchical porous activated carbon (AC) for supercapacitors (SCs) and to form a modified carbon coating on Li4Ti5O12 (LTO) anode materials, enhancing rate performance. The asphaltene-derived AC exhibits a specific capacitance of 100.8 F/g at 0.1 A/g, with a retention of 86.7 % after 40,000 cycles in a 1.0 M TEABF4/PC electrolyte. Moreover, the uniform coating of asphaltene-derived carbon on LTO also enhances the electronic conductivity, delivering a specific capacity of 120.5 mAh/g even at a high current rate of 20C. By integrating the asphaltene-derived capacitive SC and Faradaic LIB electrodes, the resultant LICs reveal excellent electrochemical properties with an energy density of 60.75 W h/kg at a power density of 215 W/kg, along with superior cycling stability. This work presents a viable method for converting the undesirable fraction of crude oil into high-performance energy storage materials.

語言：en

ISSN：2352-152X; 2352-1538

期刊性質：國外

收錄於：SCI

審稿制度：否

國別：NLD

出版型式：電子版,紙本