Electrochemical Effect of Cokes-Derived Activated Carbon with Partially Graphitic Structure for Hybrid Supercapacitors

被引：2
作者：
Kang, Seo Hui [1 ,2 ]
Jeong, Jun Hui [1 ]
Chae, Ji Su [1 ]
Kang, Yun Chan [2 ]
Roh, Kwang Chul [1 ]
机构：
[1] Korea Inst Ceram Engn & Technol, Energy & Environm Div, 101 Sohoro, Jinju Si 52851, Gyeongsangnam D, South Korea
[2] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea
来源：
CHEMELECTROCHEM | 2021年 / 8卷 / 19期
关键词：
hybrid supercapacitors; asymmetric supercapacitors; activated carbon; partially graphitic structure; Li4Ti5O12; CNT; carbon composites; HIGH-ENERGY; HIGH-POWER; POROUS CARBON; SURFACE-AREA; PERFORMANCE; ELECTRODES; TEMPLATE; DESIGN; ANODE;
D O I：
10.1002/celc.202100593
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
We report the optimized electrochemical performance of a hybrid supercapacitor constructed with cokes-derived activated carbon (CAC) and Li4Ti5O12/carbon nanotube (LTO/CNT), which has improved capacitance and rate capability. The improved capacitance of the CAC is attributed to additional shallow intercalation due to the remaining graphitic structure with ion adsorption via optimized surface area and pore structure. The graphitic structure is partially maintained via adjusted KOH activation conditions. The improved rate capability of LTO/CNT is affected by the increase in electronic conductivity, which entails the formation of an electron pathway via a 3D CNT network, whereas nanosized LTO arrangements are embedded in the CNT structure. The maximum energy and power densities of the hybrid supercapacitor are 69.1 Wh kg(-1) and 16.5 W kg(-1), respectively, whereas the cycle-life performance is 88 % after 8000 cycles. This hybrid supercapacitor can allow for the expansion of the application of supercapacitors.
引用
收藏
页码：3621 / 3628
页数：8
相关论文
共 49 条
[1]   Structure and electronic properties of graphite nanoparticles [J].
Andersson, OE ;
Prasad, BLV ;
Sato, H ;
Enoki, T ;
Hishiyama, Y ;
Kaburagi, Y ;
Yoshikawa, M ;
Bandow, S .
PHYSICAL REVIEW B, 1998, 58 (24) :16387-16395
[2]   Capacitance limits of high surface area activated carbons for double layer capacitors [J].
Barbieri, O ;
Hahn, M ;
Herzog, A ;
Kötz, R .
CARBON, 2005, 43 (06) :1303-1310
[3]  
Bok H. K., 2008, J ELECTROCHEM SOC, V155, pA685, DOI [10.1149/1.2868772, DOI 10.1149/1.2868772]
[4]   Design of Hierarchical Porous Carbonaceous Foams from a Dual-Template Approach and Their Use as Electrochemical Capacitor and Li Ion Battery Negative Electrodes [J].
Brun, Nicolas ;
Prabaharan, Savari R. S. ;
Surcin, Christine ;
Morcrette, Mathieu ;
Deleuze, Herve ;
Birot, Marc ;
Babot, Odile ;
Achard, Marie-France ;
Backov, Renal .
JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (01) :1408-1421
[5]   Starch-Derived Hierarchical Porous Carbon with Controlled Porosity for High Performance Supercapacitors [J].
Cao, Jinhui ;
Zhu, Chunyu ;
Aoki, Yoshitaka ;
Habazaki, Hiroki .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (06) :7292-7303
[6]   Preparation and Characterization of Flexible Asymmetric Supercapacitors Based on Transition-Metal-Oxide Nanowire/Single-Walled Carbon Nanotube Hybrid Thin-Film Electrodes [J].
Chen, Po-Chiang ;
Shen, Guozhen ;
Shi, Yi ;
Chen, Haitian ;
Zhou, Chongwu .
ACS NANO, 2010, 4 (08) :4403-4411
[7]   Electrochemical performance of hybrid supercapacitor fabricated using multi-structured activated carbon [J].
Cho, Min-Young ;
Kim, Mok-Hwa ;
Kim, Hyun-Kyung ;
Kim, Kwang-Bum ;
Yoon, Jung Rag ;
Roh, Kwang Chul .
ELECTROCHEMISTRY COMMUNICATIONS, 2014, 47 :5-8
[8]   Effects of Cellulose, Hemicellulose, and Lignin on the Structure and Morphology of Porous Carbons [J].
Deng, Jiang ;
Xiong, Tianyi ;
Wang, Haiyan ;
Zheng, Anmin ;
Wang, Yong .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2016, 4 (07) :3750-3756
[9]   Asymmetric Supercapacitors Based on Graphene/MnO2 and Activated Carbon Nanofiber Electrodes with High Power and Energy Density [J].
Fan, Zhuangjun ;
Yan, Jun ;
Wei, Tong ;
Zhi, Linjie ;
Ning, Guoqing ;
Li, Tianyou ;
Wei, Fei .
ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (12) :2366-2375
[10]   Statically deposited nanostructured CoxNi1-x layered double hydroxides as electrode materials for redox-supercapacitors [J].
Gupta, Vinay ;
Gupta, Shubhra ;
Miura, Norio .
JOURNAL OF POWER SOURCES, 2008, 175 (01) :680-685
12345