scholarly journals Use of a zeolite slurry to increase the charge retention of a low-cost aqueous supercapacitor

2021 ◽  
Author(s):  
◽  
Samuel Devese
Keyword(s):  
Coulombic Efficiency ◽  
Low Cost ◽  
High Rate ◽  
Energy Technology ◽  
Galvanostatic Charge ◽  
Energy Storage Devices ◽  
Production Methods ◽  
Storage Devices ◽  
Discharge Curve ◽  
Charge Discharge

<p>To increase the viability of renewable energy technology, improvements must be made to existing energy storage devices. One such device is the supercapacitor, which is able to store energy like a battery, but with faster charge-discharge times and increased cyclability. The two main factors limiting the widespread use of supercapacitor technology are the high component cost and high rate of self-discharge. In this project, both of these aspects were addressed, and a supercapacitor was successfully constructed using a carbon black slurry containing zeolitic structures with a pore size of 4 Å to accommodate the electrolyte ions of potassium and chloride.  Low-cost materials and production methods were used to create a supercapacitor with a measured capacitance of 17.25 F g⁻¹ and a coulombic efficiency of 100% determined by galvanostatic charge-discharge curve measurements.</p>

scholarly journals Use of a zeolite slurry to increase the charge retention of a low-cost aqueous supercapacitor

2021 ◽  
Author(s):  
◽  
Samuel Devese
Keyword(s):  
Coulombic Efficiency ◽  
Low Cost ◽  
High Rate ◽  
Energy Technology ◽  
Galvanostatic Charge ◽  
Energy Storage Devices ◽  
Production Methods ◽  
Storage Devices ◽  
Discharge Curve ◽  
Charge Discharge

<p>To increase the viability of renewable energy technology, improvements must be made to existing energy storage devices. One such device is the supercapacitor, which is able to store energy like a battery, but with faster charge-discharge times and increased cyclability. The two main factors limiting the widespread use of supercapacitor technology are the high component cost and high rate of self-discharge. In this project, both of these aspects were addressed, and a supercapacitor was successfully constructed using a carbon black slurry containing zeolitic structures with a pore size of 4 Å to accommodate the electrolyte ions of potassium and chloride.  Low-cost materials and production methods were used to create a supercapacitor with a measured capacitance of 17.25 F g⁻¹ and a coulombic efficiency of 100% determined by galvanostatic charge-discharge curve measurements.</p>

scholarly journals Ultra-Stable Lithium-Sulfur Batteries Using Nickel Phosphide@Carbon Fabric Interlayer

2021 ◽  
Author(s):  
Kyeong min Yang ◽  
Soochan Kim ◽  
Kaiwei Yang ◽  
Sungsik Choi ◽  
Misuk Cho ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Low Cost ◽  
Rate Capability ◽  
High Rate ◽  
Carbon Fabric ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Lithium Sulfur Batteries ◽  
Electrochemically Deposited ◽  
Lithium Sulfur

Abstract Lithium-sulfur batteries (LSB) are highly promising candidates for next generation energy storage devices due to their high theoretical capacity and the low cost of sulfur. However, dissolution of lithium polysulfides (LPS) into electrolyte causes undesirable effects, resulting in loss of active materials, low Coulombic efficiency, and fast capacity fading. To address these issues, designed interlayers are inserted between a separator and S cathode to evaluate the effect of blocking of long chain LPS and catalytic conversion of LPS to Li2S2/Li2S on battery performance. In order to amplify the effect of interlayer, the Ni2P nanoparticles are electrochemically deposited on carbon fabric (CF) which exhibit excellent adsorption and conversion effect of LPS. A cell fabricated with the Ni2P@CF interlayer allows remarkable improvement in the capacity decay of 0.04% per cycle at 1 C for 1000 cycles and outstanding high rate capability. The cell delivered a capacity retention of 64% employing a current density of 8C.

scholarly journals Monocarborane cluster as a stable fluorine-free calcium battery electrolyte

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kazuaki Kisu ◽  
Sangryun Kim ◽  
Takara Shinohara ◽  
Kun Zhao ◽  
Andreas Züttel ◽  
...  
Keyword(s):  
Room Temperature ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Ionic Conductivities ◽  
High Energy ◽  
High Energy Density ◽  
Free Calcium ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Battery Electrolyte

AbstractHigh-energy-density and low-cost calcium (Ca) batteries have been proposed as ‘beyond-Li-ion’ electrochemical energy storage devices. However, they have seen limited progress due to challenges associated with developing electrolytes showing reductive/oxidative stabilities and high ionic conductivities. This paper describes a calcium monocarborane cluster salt in a mixed solvent as a Ca-battery electrolyte with high anodic stability (up to 4 V vs. Ca2+/Ca), high ionic conductivity (4 mS cm−1), and high Coulombic efficiency for Ca plating/stripping at room temperature. The developed electrolyte is a promising candidate for use in room-temperature rechargeable Ca batteries.

Novel High-Rate Lithium Intercalation Electrode Materials Prepared by LiOH Solution Treatment of TiO2/Carbon Composites

2007 ◽  
Vol 350 ◽  
pp. 199-202 ◽  
Author(s):  
Hideyuki Morimoto ◽  
Kenji Kurita ◽  
Tetsuya Matsuda ◽  
Shinichi Tobishima
Keyword(s):  
Electrode Materials ◽  
Coulombic Efficiency ◽  
Solution Treatment ◽  
High Rate ◽  
Lithium Intercalation ◽  
Carbon Composites ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Discharge Current Density ◽  
Storage Devices

Anatase-type TiO2-based oxide gel /carbon composites were treated chemically with LiOH aqueous solution at 60 °C. The crystalline phase of treated powder was examined by powder x-ray diffraction using CuKα radiation. The main diffraction peaks may be detected as belonging to cubic LiTiO2. High-rate lithium intercalation properties of the samples were estimated in nonaqueous electrolyte including lithium ions. The composite electrodes exhibited high coulombic efficiency over 90% at first cycle and high capacities over 200 mAh g-1 after 200 cycle at large charge-discharge current density of 5.0 mA cm-2 (3.7 A g-1). The composite materials are one of the promising candidates as electrode materials for energy storage devices, such as hybrid capacitor, that require high-power operations.

K-ions intercalated V6O13 with advanced high-rate long-cycle performance as cathode for Zn-ion batteries

2021 ◽  
Author(s):  
Qihao Chen ◽  
Zhiqiang Luo ◽  
Xudong Zhao
Keyword(s):  
Energy Storage ◽  
Cathode Materials ◽  
Large Scale ◽  
Low Cost ◽  
High Rate ◽  
Cycle Performance ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Long Cycle

Aqueous Zn-ion batteries (AZIBs) are regarded as potential candidates for large-scale energy storage devices due to their low cost, high safety, and abundant Zn resources. The cathode materials of AZIBs...

scholarly journals Synthesis of Molybdenum Sulfide/Tellurium Hetero-Composite by a Simple One-Pot Hydrothermal Technique for High-Performance Supercapacitor Electrode Material

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2346
Author(s):  
Hem Prakash Karki ◽  
Hyojae Kim ◽  
Jinmu Jung ◽  
Jonghyun Oh
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
High Performance ◽  
Galvanostatic Charge ◽  
Energy Storage Devices ◽  
One Pot ◽  
Hydrothermal Technique ◽  
Storage Devices ◽  
Charge Discharge

It is necessary to investigate effective energy storage devices that can fulfill the requirements of short-term and long-term durable energy outputs. Here, we report a simple one-pot hydrothermal technique through which to fabricate the MoS2/Te nanocomposite to be used as an effective electrode material for high-performance supercapacitors. Comprehensive characterization of the as-fabricated nanomaterial was performed using FESEM, HRTEM, XRD, FTIR, XPS, etc., as well as electrochemical characterizations. The electrochemical characterization of the as-fabricated nanocomposite electrode material showed a high specific capacitance of 402.53 F g−1 from a galvanostatic charge-discharge (GCD) profile conducted at 1 A g−1 current density. The electrode material also showed significant rate performance with high cyclic stability reaching up to 92.30% under 4000 cycles of galvanostatic charge-discharge profile at a current density of 10 A g−1. The highly encouraging results obtained using this simple synthetic approach demonstrate that the hetero-structured nanocomposite of MoS2/Te electrode material could serve as a promising composite to use in effective supercapacitors or energy storage devices.

scholarly journals High-Rate Transition Metal-based Cathode Materials for Battery-Supercapacitor Hybrid Devices

2021 ◽  
Author(s):  
Cong Wang ◽  
Zehao Song ◽  
Pei Shi ◽  
Lin Lv ◽  
Houzhao Wan ◽  
...  
Keyword(s):  
Large Scale ◽  
Rapid Development ◽  
Electronic Devices ◽  
High Rate ◽  
Specific Power ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Electrochemical Devices ◽  
Hybrid Devices ◽  
Scale Grid

With the rapid development of portable electronic devices, electric vehicles and large-scale grid energy storage devices, it needs to reinforce specific energy and specific power of related electrochemical devices meeting...

High Rate Charge/Discharge Characteristics in Composite Film of Mesoporous TiO2 and Polyaniline for Photorechargeable Battery

2014 ◽  
Vol 1606 ◽  
Author(s):  
Teruaki Nomiyama ◽  
Kenta Sakamoto ◽  
Tomohito Yoshida ◽  
Akinori Kagiyama ◽  
Yuji Horie
Keyword(s):  
Composite Film ◽  
High Performance ◽  
Specific Capacity ◽  
Electrical Energy ◽  
High Rate ◽  
Galvanostatic Charge ◽  
Discharge Characteristics ◽  
Electrical Energy Storage ◽  
Charging Rate ◽  
Charge Discharge

ABSTRACTOne of promising photorechargeable electrode, which has two functions of photovoltaic and electrical energy storage, is a composite film of mesoporous TiO2 and conducting polymer polyaniline. Galvanostatic charge/discharge characteristics of the TiO2-polyaniline composite were examined to reveal how fast the film was charged. The film with a specific capacity 60-120 mAh g–1 was found to be fully charged at high charging rate 20 mA cm–2 which is comparable to high performance solar cells. Such high charging rate was achieved by the compact polyaniline layer covering the large specific surface area of mesoporous TiO2 film.

A High-Rate Two-Dimensional Polyarylimide Covalent Organic Framework Anode for Aqueous Zn-Ion Energy Storage Devices

2020 ◽  
Vol 142 (46) ◽  
pp. 19570-19578
Author(s):  
Minghao Yu ◽  
Naisa Chandrasekhar ◽  
Ramya Kormath Madam Raghupathy ◽  
Khoa Hoang Ly ◽  
Haozhe Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Rate ◽  
Two Dimensional ◽  
Energy Storage Devices ◽  
Ion Energy ◽  
Storage Devices ◽  
Covalent Organic Framework ◽  
Organic Framework
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