scholarly journals Thermal Pore Stability of Activated Carbon Materials to Heat Treatment above 1000°C and Lithium-ion Capacitors Using Heated Silicon-carbide-derived Carbon

2020 ◽  
Vol 88 (2) ◽  
pp. 57-59
Author(s):  
Takahiro SAITO ◽  
Kazuya KUWAHARA ◽  
Shinji ISHIKAWA ◽  
Soshi SHIRAISHI
Keyword(s):  
Heat Treatment ◽  
Silicon Carbide ◽  
Activated Carbon ◽  
Carbon Materials ◽  
Lithium Ion ◽  
Carbide Derived Carbon ◽  
Pore Stability

Supercapacitors Based on Activated Silicon Carbide-Derived Carbon Materials and Ionic Liquid

2016 ◽  
Vol 163 (7) ◽  
pp. A1317-A1325 ◽  
Author(s):  
E. Tee ◽  
I. Tallo ◽  
T. Thomberg ◽  
A. Jänes ◽  
E. Lust
Keyword(s):  
Silicon Carbide ◽  
Ionic Liquid ◽  
Carbon Materials ◽  
Carbide Derived Carbon

Functionalized Carbonaceous Materials as Cathode for Lithium-Ion Batteries

MRS Advances ◽  
2016 ◽  
Vol 1 (45) ◽  
pp. 3037-3042 ◽  
Author(s):  
Hai Zhong ◽  
Chunhua Wang ◽  
Zhibin Xu ◽  
Fei Ding ◽  
Xingjiang Liu
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Carbon Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Carbon Particles ◽  
Ion Storage ◽  
Activated Carbon Particles ◽  
Storage Buffer ◽  
A Current

ABSTRACTActivated carbon materials are integrated into functionalization of graphene nano-sheets to serve as a high-power lithium cathode. The electrochemical performance shows that the composite displays the highest reversible capacity (c. 170 mAh g-1) comparing with functionalized graphene and activated carbon. Also, approximately 92% of its capacity can be retained after 4,000 cycles at a current of 1 A g-1. Moreover, the composite exhibits an excellent rate performance, a reversible capacity of 90 mAh g-1 even at 6 A g-1, which corresponds to the power density of 15.2 kW kg-1 and energy density of 227 Wh kg-1, respectively. The high performance of this composite can be attributed to the fact that the activated carbon particles not only reduce the graphene sheet stacking thus making it easier for ions to diffuse, but also act as an ion storage buffer against accelerating electron transfer.

Relation Between Heat-Treatment Temperature and Characteristics of Polyparaphenylene(PPP)-Based Carbon Materials for Lithium Ion Secondary Batteries

2001 ◽  
Vol 699 ◽  
Author(s):  
Kozo Osawa ◽  
Tatsuo Nakazawa ◽  
Kyoich Oshida ◽  
Morinobu Endo ◽  
Mildred S. Dresselhaus
Keyword(s):  
Heat Treatment ◽  
Heat Treatment Temperature ◽  
Carbon Materials ◽  
Layer Structure ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Treatment Temperature ◽  
Carbon Powder ◽  
Transmission Electron ◽  
Current Characteristics

AbstractPolyparaphenylene (PPP)-based carbon powder is expected for materials of the negative electrode of the lithium ion secondary batteries. In this study, effects of heat treatment temperature on the PPP materials are investigated by means of electrical and structural measurement. The layer structure of the powder is analyzed in detail by the transmission electron microscope observation combined with digital image processing. Charge-discharge current characteristics, electrical resistivity under pressure and layer structure of the PPP-based carbon powder are measured and discussed.

scholarly journals Na0.76V6O15/Activated Carbon Hybrid Cathode for High-Performance Lithium-Ion Capacitors

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 122
Author(s):  
Renwei Lu ◽  
Xiaolong Ren ◽  
Chong Wang ◽  
Changzhen Zhan ◽  
Ding Nan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Cathode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Artificial Graphite

Lithium-ion hybrid capacitors (LICs) are regarded as one of the most promising next generation energy storage devices. Commercial activated carbon materials with low cost and excellent cycling stability are widely used as cathode materials for LICs, however, their low energy density remains a significant challenge for the practical applications of LICs. Herein, Na0.76V6O15 nanobelts (NaVO) were prepared and combined with commercial activated carbon YP50D to form hybrid cathode materials. Credit to the synergism of its capacitive effect and diffusion-controlled faradaic effect, NaVO/C hybrid cathode displays both superior cyclability and enhanced capacity. LICs were assembled with the as-prepared NaVO/C hybrid cathode and artificial graphite anode which was pre-lithiated. Furthermore, 10-NaVO/C//AG LIC delivers a high energy density of 118.9 Wh kg−1 at a power density of 220.6 W kg−1 and retains 43.7 Wh kg−1 even at a high power density of 21,793.0 W kg−1. The LIC can also maintain long-term cycling stability with capacitance retention of approximately 70% after 5000 cycles at 1 A g−1. Accordingly, hybrid cathodes composed of commercial activated carbon and a small amount of high energy battery-type materials are expected to be a candidate for low-cost advanced LICs with both high energy density and power density.

scholarly journals Enhanced Electrochemical Performances of Hollow-Structured N-Doped Carbon Derived from a Zeolitic Imidazole Framework (ZIF-8) Coated by Polydopamine as an Anode for Lithium-Ion Batteries

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2436
Author(s):  
Da-Won Lee ◽  
Achmad Yanuar Maulana ◽  
Chaeeun Lee ◽  
Jungwook Song ◽  
Cybelle M. Futalan ◽  
...  
Keyword(s):  
Carbon Materials ◽  
Hollow Structure ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Electrical Performance ◽  
Electrochemical Performances ◽  
Effective Surface ◽  
Voltage Range ◽  
Hollow Structures ◽  
A Current

Doping heteroatoms such as nitrogen (N) and boron (B) into the framework of carbon materials is one of the most efficient methods to improve the electrical performance of carbon-based electrodes. In this study, N-doped carbon has been facilely synthesized using a ZIF-8/polydopamine precursor. The polyhedral structure of ZIF-8 and the effective surface-coating capability of dopamine enabled the formation of N-doped carbon with a hollow structure. The ZIF-8 polyhedron served as a sacrificial template for hollow structures, and dopamine participated as a donor of the nitrogen element. When compared to ZIF-8-derived carbon, the HSNC electrode showed an improved reversible capacity of approximately 1398 mAh·g−1 after 100 cycles, with excellent cycling retention at a voltage range of 0.01 to 3.0 V using a current density of 0.1 A·g−1.

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