scholarly journals Electric Field Enhanced Synthesis of Copper Hydroxide Nanostructures for Supercapacitor Application

NANO ◽  
2017 ◽  
Vol 12 (01) ◽  
pp. 1750010
Author(s):  
S. Sepahvand ◽  
S. Ghasemi ◽  
Z. Sanaee
Keyword(s):  
Electric Field ◽  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Impedance ◽  
Low Cost ◽  
Copper Substrate ◽  
Cyclic Voltammograms ◽  
Copper Hydroxide ◽  
Supercapacitor Application ◽  
Average Grain Size

Electric field enhanced approach has been used to synthesize different copper hydroxide morphologies as high-performance supercapacitors electrode materials. Employing this efficient, simple and low cost method, various shapes such as rod, flower and cube with an average grain size of 30[Formula: see text]nm to 1[Formula: see text][Formula: see text]m were obtained on the copper substrate. The results revealed that applied electric field considerably accelerates the formation time of nanostructures from several days to close to 1[Formula: see text]min, where some of the desired nanostructures were obtained even in 1[Formula: see text]s. The electrochemical properties of different morphologies were compared using cyclic voltammograms and charge/discharge tests and electrochemical impedance spectroscopy. The obtained results demonstrated that the two types of fabricated structures showed high maximum areal and specific capacitance of 42[Formula: see text]mF/cm2 and 178[Formula: see text]F/g at scan rate of 20[Formula: see text]mVs[Formula: see text], respectively, which make them excellent and promising electrode materials for supercapacitors.

scholarly journals Fabrication of High-Performance Flexible Supercapacitor Electrodes with Poly(3,4-ethylenedioxythiophene) (PEDOT) Grown on Carbon-Deposited Polyurethane Sponge

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7393
Author(s):  
Linyue Tong ◽  
Laura A. Sonnenberg ◽  
Wei Wu ◽  
Steven M. Boyer ◽  
Maggie T. Fox ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Impedance ◽  
Low Cost ◽  
Active Material ◽  
Electrical Performance ◽  
Polymerization Temperature ◽  
Composite Electrodes ◽  
Graphene Nanoplatelet

Composite porous supercapacitor electrodes were prepared by growing poly(3,4-ethylenedioxythiophene) (PEDOT) on graphite nanoplatelet- or graphene nanoplatelet-deposited open-cell polyurethane (PU) sponges via a vapor phase polymerization (VPP) method. The resulting composite supercapacitor electrodes exhibited great capacitive performance, with PEDOT acting as both the conductive binder and the active material. The chemical composition was characterized by Raman spectroscopy and the surface morphology was characterized by scanning electron microscopy (SEM). Cyclic voltammetry (CV), charge-discharge (CD) tests and electrochemical impedance spectroscopy were utilized to study the electrical performance of the composite electrodes produced in symmetrically configured supercapacitor cells. The carbon material deposited on PU substrates and the polymerization temperature of PEDOT affected significantly the PEDOT morphology and the electrical properties of the resulting composite sponges. The highest areal specific capacitance 798.2 mF cm−2 was obtained with the composite sponge fabricated by VPP of PEDOT at 110 °C with graphene nanoplatelet-deposited PU sponge substrate. The capacitance retention of this composite electrode was 101.0% after 10,000 charging–discharging cycles. The high flexibility, high areal specific capacitance, excellent long-term cycling stability and low cost make these composite sponges promising electrode materials for supercapacitors.

Hierarchical porous carbon nanosheet derived from waste engine oil for high-performance supercapacitor application

2019 ◽  
Vol 3 (2) ◽  
pp. 499-507 ◽  
Author(s):  
Yubing Li ◽  
Deyi Zhang ◽  
Jingjing He ◽  
Yulin Wang ◽  
Xiai Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Engine Oil ◽  
Hierarchical Porous Carbon ◽  
Energy Storage Devices ◽  
Supercapacitor Application ◽  
Storage Devices ◽  
Waste Engine Oil ◽  
Hierarchical Porous

The utilization of electrode materials with high-performance and low-cost is crucial for the development of electrochemical energy storage devices.

Unveiling the SEI Formation in a Potassium Ion Battery Using Distribution of Relaxation Time

2020 ◽  
Author(s):  
Yuhui Chen ◽  
Chuanchao Sheng ◽  
Fengjiao Yu ◽  
Chunmei Li ◽  
Heng Zhang ◽  
...  
Keyword(s):  
Relaxation Time ◽  
High Performance ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Electrochemical Impedance ◽  
Low Cost ◽  
Solid Electrolyte Interphase ◽  
High Capacity ◽  
Sei Layer

Abstract Understanding of solid electrolyte interphase (SEI) formation process in novel battery systems is of primary importance. Alongside increasing powerful in-situ techniques, searching for readily-accessible, non-invasive, and low-cost tools to probe battery chemistry is highly demanded. Here, we applied distribution of relaxation time (DRT) analysis to interpret in-situ electrochemical impedance spectroscopy results during cycling, which is able to distinguish various electrochemical processes based on their time constants. By building direct link between SEI layer and the cell performances, it allows us track the formation and evolution process of SEI layer, diagnose the failure of cell, and unveil the reaction mechanism. For instance, in a K-ion cell using SnS2/N-doped reduced graphene oxide (N-rGO) composite electrode, we found that the ion-transport in the electrolyte phase is the main reason of cell deterioration. In the electrolyte with potassium bis(fluorosulfonyl)imide (KFSI), the porous structure of the composite electrode was reinforced by rapid formation of a robust SEI layer at SnS2/electrolyte interface and thus the KFSI-based cell delivers a high capacity and good cycleability. This method lowers the barrier of in-situ EIS analysis, and helps public researchers to explore high-performance electrode materials.

V2O3 nanofoam@activated carbon composites as electrode materials of supercapacitors

2017 ◽  
Vol 10 (06) ◽  
pp. 1750077 ◽  
Author(s):  
Xun Zhang ◽  
Zhonglin Bu ◽  
Rui Xu ◽  
Bing Xie ◽  
Hong-Yi Li
Keyword(s):  
Activated Carbon ◽  
Specific Capacitance ◽  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Rate Capability ◽  
Mesoporous Structure ◽  
Carbon Composites ◽  
Supercapacitor Application ◽  
Ion Intercalation

Electrode materials with high performance and low cost are demanding in supercapacitor applications. Novel V2O3 nanofoam@activated carbon composites have been prepared simply and cost-efficiently. Due to the mesoporous structure and high specific surface of V2O3 nanofoam and the good electric conductivity of activated carbon, the obtained composites exhibit an obviously improved specific capacitance as high as 185[Formula: see text]F/g, which overpasses bulk V2O3 (119[Formula: see text]F/g) and activated carbon (113[Formula: see text]F/g). The rate capability of V2O3 nanofoam@activated carbon composites has also been improved, owing to the increased electron transport accelerated by the activated carbon and the fast electrolyte ion intercalation/deintercalation facilitated by mesopores of V2O3 nanofoam. The composites retain 56% of initial specific capacitance when the current density increases from 0.05[Formula: see text]A/g to 1.0[Formula: see text]A/g. Therefore, the obtained V2O3 nanofoam@activated carbon composites are low-cost electrode materials with obviously improved electrochemical performance, which are idea for supercapacitor application.

Organic electrode materials for non-aqueous, aqueous, and all-solid-state Na-ion batteries

2021 ◽  
Author(s):  
Kathryn Holguin ◽  
Motahareh Mohammadiroudbari ◽  
Kaiqiang Qin ◽  
Chao Luo
Keyword(s):  
Solid State ◽  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Li Ion Batteries ◽  
Organic Electrode ◽  
Li Ion

Na-ion batteries (NIBs) are promising alternatives to Li-ion batteries (LIBs) due to the low cost, abundance, and high sustainability of sodium resources. However, the high performance of inorganic electrode materials...

Hybrid ZnO/ZnS nanoforests as the electrode materials for high performance supercapacitor application

2015 ◽  
Vol 44 (5) ◽  
pp. 2409-2415 ◽  
Author(s):  
Siwen Zhang ◽  
Bosi Yin ◽  
He Jiang ◽  
Fengyu Qu ◽  
Ahmad Umar ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Thermal Evaporation ◽  
Tube Furnace ◽  
Thermal Evaporation Method ◽  
Argon Gas ◽  
Evaporation Method ◽  
Supercapacitor Application

Heterostructured ZnO/ZnS nanoforests are prepared through a simple two-step thermal evaporation method at 650 °C and 1300 °C in a tube furnace under the flow of argon gas, respectively.

scholarly journals Synergistic approach of high-performance N-NiCo/PC environment benign electrode material for energy storage device

2021 ◽  
Author(s):  
Muhammad Irfan ◽  
Xianhua Liu ◽  
Suraya Mushtaq ◽  
Jonnathan Cabrera ◽  
Pingping Zhang
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Composite Catalyst ◽  
Storage Device ◽  
Energy Storage Devices ◽  
Biomass Waste ◽  
Supercapacitor Application ◽  
Suitable Material ◽  
Storage Devices

Abstract Development of sustainable electrochemical energy storage devices faces great challenge in exploring highly efficient and low cost electrode materials. Biomass waste derived carbonaceous materials can be used as an alternative to expensive metals in supercapacitor. However, their application limited by low performance. In this study, the combination use of persimmon waste derived carbon and transition metal nitride demonstrated strong potential for supercapacitor application. Persimmon based carbonaceous gel decorated with bimetallic-nitride (N-NiCo/PC) was firstly synthesized through a green hydrothermal method. Electrochemical properties of N-NiCo/PC as electrode in 6 M KOH electrolyte solution were evaluated by using cyclic voltammetry (CV) and charge-discharge measurements. The N-NiCo/PC exhibited 895.5 F/g specific capacitance at 1 A/g current density and maintained 91.5% capacitance retention after 900 cycles. Hence, the bimetallic nitride-based-composite catalyst is a potentially suitable material for high-performance energy storage devices. In addition, this work demonstrated a promising pathway for transforming environmental waste into sustainable energy conversion materials.

Low-cost and high-performance electrode materials based on BiCoO3 microspheres

2017 ◽  
Vol 43 (3) ◽  
pp. 2956-2961 ◽  
Author(s):  
Shuoqing Zhao ◽  
Tianmo Liu ◽  
Le Yu ◽  
Wen Zeng ◽  
Yangyang Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Low Cost

Recent progress in zinc-based redox flow batteries: a review

2021 ◽  
Author(s):  
Guixiang Wang ◽  
Haitao Zou ◽  
Xiaobo Zhu ◽  
Mei Ding ◽  
Chuankun Jia
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Electrode Materials ◽  
Low Cost ◽  
Ion Selectivity ◽  
Commercial Application ◽  
Environmental Friendliness ◽  
Membrane Materials ◽  
Redox Flow Batteries ◽  
Flow Batteries

Abstract Zinc-based redox flow batteries (ZRFBs) have been considered as ones of the most promising large-scale energy storage technologies owing to their low cost, high safety, and environmental friendliness. However, their commercial application is still hindered by a few key problems. First, the hydrogen evolution and zinc dendrite formation cause poor cycling life, of which needs to ameliorated or overcome by finding suitable anolytes. Second, the stability and energy density of catholytes are unsatisfactory due to oxidation, corrosion, and low electrolyte concentration. Meanwhile, highly catalytic electrode materials remain to be explored and the ion selectivity and cost efficiency of membrane materials demands further improvement. In this review, we summarize different types of ZRFBs according to their electrolyte environments including ZRFBs using neutral, acidic, and alkaline electrolytes, then highlight the advances of key materials including electrode and membrane materials for ZRFBs, and finally discuss the challenges and perspectives for the future development of high-performance ZRFBs.

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