scholarly journals Energy-Density Enhancement of Carbon-Nanotube-Based Supercapacitors with Redox Couple in Organic Electrolyte

2014 ◽  
Vol 6 (22) ◽  
pp. 19499-19503 ◽  
Author(s):  
Jinwoo Park ◽  
Byungwoo Kim ◽  
Young-Eun Yoo ◽  
Haegeun Chung ◽  
Woong Kim
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
Redox Couple ◽  
Organic Electrolyte ◽  
Density Enhancement

scholarly journals Few-walled carbon nanotube-enhanced activated carbon supercapacitor performance in organic electrolyte at 4 V

RSC Advances ◽  
2019 ◽  
Vol 9 (33) ◽  
pp. 18863-18867
Author(s):  
Jie Li ◽  
Zhou Xu
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Carbon Nanotube ◽  
Energy Density ◽  
Organic Electrolyte ◽  
Supercapacitor Performance ◽  
Walled Carbon Nanotubes ◽  
Carbon Based

The addition of 1 wt% few-walled carbon nanotubes increases the energy density of an activated carbon-based supercapacitor at 4 V.

High-energy-density lithium-ion battery using a carbon-nanotube–Si composite anode and a compositionally graded Li[Ni0.85Co0.05Mn0.10]O2 cathode

2016 ◽  
Vol 9 (6) ◽  
pp. 2152-2158 ◽  
Author(s):  
Joo Hyeong Lee ◽  
Chong S. Yoon ◽  
Jang-Yeon Hwang ◽  
Sung-Jin Kim ◽  
Filippo Maglia ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
Lithium Ion Battery ◽  
State Of The Art ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Rechargeable Battery ◽  
Composite Anode ◽  
Battery System

A Li-rechargeable battery system based on state-of-the-art cathode and anode technologies demonstrated high energy density, meeting demands for vehicle application.

High energy density lithium-ion batteries with carbon nanotube anodes

2010 ◽  
Vol 25 (8) ◽  
pp. 1636-1644 ◽  
Author(s):  
Brian J. Landi ◽  
Cory D. Cress ◽  
Ryne P. Raffaelle
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Electrically Conductive ◽  
Single Walled Carbon Nanotube ◽  
Battery Energy ◽  
Graphite Composites

Recent advancements using carbon nanotube electrodes show the ability for multifunctionality as a lithium-ion storage material and as an electrically conductive support for other high capacity materials like silicon or germanium. Experimental data show that replacement of conventional anode designs, which use graphite composites coated on copper foil, with a freestanding silicon-single-walled carbon nanotube (SWCNT) anode, can increase the usable anode capacity by up to 20 times. In this work, a series of calculations were performed to elucidate the relative improvement in battery energy density for such anodes paired with conventional LiCoO2, LiFePO4, and LiNiCoAlO2 cathodes. Results for theoretical flat plate prismatic batteries comprising freestanding silicon-SWCNT anodes with conventional cathodes show energy densities of 275 Wh/kg and 600 Wh/L to be theoretically achievable; this is a 50% improvement over today's commercial cells.

scholarly journals High Energy Density Rechargeable Aqueous Lithium Batteries with an Aqueous Hydroquinone Sulfonic Acid and Benzoquinone Sulfonic Acid Redox Couple Cathode

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Hiroki Takagi ◽  
Koichi Kakimoto ◽  
Daisuke Mori ◽  
Sou Taminato ◽  
Yasuo Takeda ◽  
...  
Keyword(s):  
Energy Density ◽  
Sulfonic Acid ◽  
Acetic Acid Solution ◽  
Lithium Ion ◽  
High Energy ◽  
Open Circuit ◽  
Redox Couple ◽  
High Energy Density ◽  
Aqueous Acetic Acid ◽  
Ion Conducting

The demand for high energy density rechargeable batteries beyond lithium-ion batteries has increased for electric vehicles. In the present study, a novel high energy density rechargeable aqueous lithium battery was proposed. The battery was composed of a lithium metal anode, a lithium-stable non-aqueous electrolyte, a water-stable lithium-ion conducting solid electrolyte of Li1.4Al0.4Ge0.2Ti1.4(PO4)3-epoxy-TiO2 separator, and a hydroquinone sulfonic acid (HQS)/benzoquinone sulfonic acid (BQS) redox couple in an aqueous acetic acid solution (HAc). An open-circuit voltage of 3.7 V at 25 °C was recorded, and the theoretical energy density of the battery based on the reaction 2Li + BQS + 2H2O = 2 LiOH + HQS was 833 Whkg-1, about two times higher than that of the lithium-ion battery. The battery was successfully cycled at 0.5 mA cm-2 and 25 °C with low polarization.

Communication—Aliphatic Chain Substitution for Enhancing Energy Density of p-Benzoquinone Redox Couple for Non-Aqueous Flow Batteries

2020 ◽  
Vol 167 (2) ◽  
pp. 020551
Author(s):  
Hyun-seung Kim ◽  
Jeong Beom Lee ◽  
Ki Jae Kim ◽  
Ji Heon Ryu ◽  
Seung M. Oh
Keyword(s):  
Energy Density ◽  
Redox Couple ◽  
Aliphatic Chain ◽  
Flow Batteries ◽  
Aqueous Flow

Thicker carbon-nanotube/manganese-oxide hybridized nanostructures as electrodes for the creation of fiber-shaped high-energy-density supercapacitors

Carbon ◽  
2019 ◽  
Vol 154 ◽  
pp. 169-177 ◽  
Author(s):  
Wei Gong ◽  
Bunshi Fugetsu ◽  
Zhipeng Wang ◽  
Takayuki Ueki ◽  
Ichiro Sakata ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
Manganese Oxide ◽  
High Energy ◽  
High Energy Density ◽  
The Creation

scholarly journals Manufacturing Aluminum/Multiwalled Carbon Nanotube Composites via Laser Powder Bed Fusion

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 3927
Author(s):  
Eo Ryeong Lee ◽  
Se Eun Shin ◽  
Naoki Takata ◽  
Makoto Kobashi ◽  
Masaki Kato
Keyword(s):  
Elastic Modulus ◽  
Carbon Nanotube ◽  
Energy Density ◽  
Laser Power ◽  
Multiwalled Carbon Nanotube ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Multiwalled Carbon ◽  
Powder Bed ◽  
Scan Speed

This study provides a novel approach to fabricating Al/C composites using laser powder bed fusion (LPBF) for a wide range of structural applications utilizing Al-matrix composites in additive manufacturing. We investigated the effects of LPBF on the fabrication of aluminum/multiwalled carbon nanotube (Al/MWCNT) composites under 25 different conditions, using varying laser power levels and scan speeds. The microstructures and mechanical properties of the specimens, such as elastic modulus and nanohardness, were analyzed, and trends were identified. We observed favorable sintering behavior under laser conditions with low energy density, which verified the suitability of Al/MWCNT composites for a fabrication process using LPBF. The size and number of pores increased in specimens produced under high energy density conditions, suggesting that they are more influenced by laser power than scan speed. Similarly, the elastic modulus of a specimen was also more affected by laser power than scan speed. In contrast, scan speed had a greater influence on the final nanohardness. Depending on the laser power used, we observed a difference in the crystallographic orientation of the specimens by a laser power during LPBF. When energy density is high, texture development of all samples tended to be more pronounced.

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