Effect of substrate on the performance of flexible energy storage devices based on surface modified C60 – β Ni(OH)2 nanocomposite

2021 ◽  
Vol 13 ◽  
Author(s):  
Soorya Sasi ◽  
Sunish K. Sugunan ◽  
Radhakrishnan Nair P. ◽  
Suresh Mathew
Keyword(s):  
Electrical Conductivity ◽  
Energy Storage ◽  
Specific Capacitance ◽  
Current Collector ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Binder Free ◽  
Surface Modified ◽  
Inorganic Composite ◽  
Charge Discharge

Aim: Aim of this study is to find the effect of the current collector in the performance of flexible energy storage devices based on surface modified organic-inorganic composite. Objective: As a part of our pursuit to develop flexible supercapacitive electrodes, we recently reported the fabrication of an electrode from an organic-inorganic composite slurry of surface functionalized fullerene and nickel hydroxide coated onto a copper sheet substrate using simple doctor blade method. We reported that the electrodes deliver specific energy and specific power of 661.5 Wh/kg and 8.8 KW/kg, respectively, and a specific capacitance of 675 Fg−1, which showed excellent cycling stabilities. In an effort to search for various combinatorial combinations of the composite and the substrate, in lieu of copper, in the present study, we incorporate nickel sheet as the current collector. Methods: The structure and composition of the binder-free, flexible super capacitive electrodes were characterized using XRD, TEM, FTIR, XPS, BET, Raman Spectroscopy, and their electrochemical properties were characterized using cyclic voltammetry, galvanostatic charge-discharge measurements, chronoamperommetry and impedance spectroscopy. Result: The as-prepared films stuck readily onto the substrate without the need of any binder material, exhibited remarkable flexibility, and were proven to be crack-free when subjected to repeated bending and twisting. The developed flexible super capacitive electrodes deliver a specific capacitance of 296 F g−1, maximum energy density of 82.2 Wh kg−1, and a maximum power density of 1056 W kg−1. The device retains 91.2 % of its capacitance when subjected to 1000 charge-discharge cycles. Conclusion: Our observations indicate that copper is the better choice as the current collector, which can be ascribed to the better electrical conductivity of copper compared to nickel. We conclude that the poor electrical conductivity of nickel sheet compared to copper substrate make the bottleneck for the performance of electrodes made using nickel substrate. To recapitulate, judicious choice of a current collector with high electrical conductivity along with a suitable surface modification strategy to form a composite in an amorphous form that forms smooth slurry are vital to the fabrication of binder-free, flexible supercapacitive devices.

High-Performance Supercapacitors Based on ɛ-MnO2/RGO Fiber Electrodes for Wearable Energy Storage

2018 ◽  
Vol 18 (12) ◽  
pp. 8352-8359 ◽  
Author(s):  
Xibin Liu ◽  
Gaohua liao ◽  
Xiang Qi ◽  
Xiaoan Mei ◽  
Jifei Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
High Performance ◽  
Fiber Surface ◽  
Current Collector ◽  
Cost Effective ◽  
Surface Acting ◽  
Energy Storage Devices ◽  
Hybrid Fibers ◽  
Storage Devices

Hybrid fibers based on MnO2/reduced graphene oxide have been fabricated for flexible energy storage devices. Graphene oxide nanoflakes were reduced in a polytetrafluoroethylene (PTFE) pipeline under the appropriate condition to develop a fiber current collector, which also provides the possibility of weaving. The RGO fiber with the radius of about 35 μm has a resistance of 150 Ω · cm. MnO2 nanoflakes directly grow on the RGO fiber surface acting as the electrode material of the device. The MnO2/RGO hybrid fibers provide excellent energy storage performances. The as-fabricated SC exhibits a high areal capacitance of 1.37 F·cm−2 at the scan rate of 1 mV·s−1, and outstanding long-term cycling stability of 93.75% retention after 5000 cycles. This work demonstrates a cost-effective and versatile strategy for wearable energy storage devices.

Controllable synthesis of 3D hierarchical bismuth compounds with good electrochemical performance for advanced energy storage devices

RSC Advances ◽  
2015 ◽  
Vol 5 (64) ◽  
pp. 51773-51778 ◽  
Author(s):  
Jinfeng Sun ◽  
Jinqing Wang ◽  
Zhangpeng Li ◽  
Zhigang Yang ◽  
Shengrong Yang
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Controllable Synthesis ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Bismuth Compounds

3D hierarchical bismuth (Bi)-based compounds with controllable sizes and morphologies exhibit high specific capacitance and superior rate capability.

scholarly journals Characteristics of Glycerolized Chitosan: NH4NO3-Based Polymer Electrolyte for Energy Storage Devices with Extremely High Specific Capacitance and Energy Density Over 1000 Cycles

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2718
Author(s):  
Shujahadeen B. Aziz ◽  
M. A. Brza ◽  
Iver Brevik ◽  
M. H. Hamsan ◽  
Rebar T. Abdulwahid ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Polymer Electrolyte ◽  
Specific Capacitance ◽  
Electrochemical Techniques ◽  
High Specific Capacitance ◽  
Transference Number ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
The Impact

In this work, plasticized polymer electrolyte films consisting of chitosan, ammonium nitrate (NH4NO3) and glycerol for utilization in energy storage devices was presented. Various microscopic, spectroscopic and electrochemical techniques were used to characterize the concerned electrolyte and the electrical double-layer capacitor (EDLC) assembly. The nature of complexation between the polymer electrolyte components was examined via X-ray diffraction analysis. In the morphological study, field emission scanning electron microscopy (FESEM) was used to investigate the impact of glycerol as a plasticizer on the morphology of films. The polymer electrolyte (conducting membrane) was found to have a conductivity of 3.21 × 10−3 S/cm. It is indicated that the number density (n), mobility (μ) and diffusion coefficient (D) of ions are increased with the glycerol amount. The mechanism of charge storing was clarified, which implies a non-Faradaic process. The voltage window of the polymer electrolyte is 2.32 V. It was proved that the ion is responsible for charge-carrying via measuring the transference number (TNM). It was also determined that the internal resistance of the EDLC assembly lay between 39 and 50 Ω. The parameters associated with the EDLC assembly are of great importance and the specific capacitance (Cspe) was determined to be almost constant over 1 to 1000 cycles with an average of 124 F/g. Other decisive parameters were found: energy density (18 Wh/kg) and power density (2700 W/kg).

Spray-Painted Binder-Free SnSe Electrodes for High-Performance Energy-Storage Devices

ChemSusChem ◽  
2013 ◽  
Vol 7 (1) ◽  
pp. 308-313 ◽  
Author(s):  
Xianfu Wang ◽  
Bin Liu ◽  
Qingyi Xiang ◽  
Qiufan Wang. ◽  
Xiaojuan Hou ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Binder Free

In situ growth of Cu(OH)2@FeOOH nanotube arrays on catalytically deposited Cu current collector patterns for high-performance flexible in-plane micro-sized energy storage devices

2019 ◽  
Vol 12 (1) ◽  
pp. 194-205 ◽  
Author(s):  
Jin-Qi Xie ◽  
Ya-Qiang Ji ◽  
Jia-Hui Kang ◽  
Jia-Li Sheng ◽  
Da-Sha Mao ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Current Collector ◽  
Nanotube Arrays ◽  
In Situ Growth ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Supercapacitor Energy Storage ◽  
Cu Current Collector

Rationally designed interdigitated electrodes based on Cu(OH)2@FeOOH nanotube arrays are facilely converted in situ from catalytically deposited Cu current collector patterns for high-performance flexible micro-supercapacitor energy storage devices.

scholarly journals Novel biomass-derived smoke-like carbon as a supercapacitor electrode material

2019 ◽  
Vol 6 (7) ◽  
pp. 190132 ◽  
Author(s):  
Mingxu Chu ◽  
Mingtang Li ◽  
Zhaolian Han ◽  
Jinshan Cao ◽  
Rui Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Surface Area ◽  
Low Cost ◽  
High Specific Surface Area ◽  
Energy Storage Devices ◽  
Supercapacitor Electrode ◽  
Storage Devices ◽  
Crude Polysaccharide ◽  
Power Outputs

In this present work, smoke-like carbon was successfully fabricated from a bio-waste fungal substrate crude polysaccharide for the first time. The as-prepared products possess smoke-like structures, ultra-high specific surface area ( S BET : 2160 m 2 g −1 ) and a high content of micropores (microporous surface area of 60%, with a nanopore size of 0.70 nm), which can increase the specific capacitance, representing a wonderful structure for electrochemical energy storage devices. The as-prepared sample displayed an excellent specific capacitance of 152 F g −1 at 5 A g −1 in the three-electrode configuration and exhibited maximal densities of 6.8–10.2 W h kg −1 under power outputs of 253.4–24.3 kW kg −1 . We believe that this work demonstrates a simple, green and low-cost route by using agricultural residue to prepare applicable carbon materials for use in energy storage devices.

scholarly journals Formation of 3D graphene foams on soft templated metal monoliths

Nanoscale ◽  
2016 ◽  
Vol 8 (27) ◽  
pp. 13303-13310 ◽  
Author(s):  
Michael K. Tynan ◽  
David W. Johnson ◽  
Ben P. Dobson ◽  
Karl S. Coleman
Keyword(s):  
Electrical Conductivity ◽  
Energy Storage ◽  
Porous Structure ◽  
Electrode Material ◽  
Pollution Control ◽  
High Electrical Conductivity ◽  
Energy Storage Devices ◽  
3D Graphene ◽  
Storage Devices ◽  
Graphene Foams

Graphene foams are leading contenders as frameworks for polymer thermosets, filtration/pollution control and for use as an electrode material in energy storage devices, taking advantage of graphene's high electrical conductivity and the porous structure of the foam.

A novel electrochemical procedure for grown of bimetallic metal–organic framework (Ni/Zn-MOF) and its derived hydroxide@C onto Ni foam as binder-free high performance battery-type electrodes for supercapacitors

2021 ◽  
Author(s):  
Qichao Song ◽  
Chunguang Yang
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Metal Organic Framework ◽  
Ni Foam ◽  
Energy Storage Devices ◽  
Cathodic Electrodeposition ◽  
Storage Devices ◽  
Metal Organic ◽  
Binder Free

Abstract Todays, metal-organic frameworks (MOFs) and their derived structures have been extensively investigated as the novel electrode materials in energy storage area due to their stable porous architectures and exceptionally large specific surface area. In this study, bimetallic Ni,Zn-MOF is synthesized onto Ni foam via a novel indirect cathodic electrodeposition method for the first time. After that, the fabricated Ni,Zn-MOFs onto Ni foam was converted to corresponding bi-metal hydroxide@C/Ni foam through direct chemical treating with 6M KOH solution. The obtained Ni,Zn-MOFs/NF and Ni2 − xZnx (OH)2@C/NF electrodes are characterized through XRD, FT-IR, FE-SEM and EDS analyses. These analyses results confirmed deposition of well-defined crystalline porous sheet-like structures of Ni3 − xZnx(BTC)2 deposited onto Ni foam, where the hydroxide@C electrode was also exhibited similar morphology. As the binder-free electrode, the as-prepared Ni,Zn-MOF@Ni foam exhibited the superior storage capacities of 356.1 mAh g− 1 and 255.5 mAh g− 1 as well as good cycling stabilities of 94.2 % and 84.5 % after 6000 consecutive charge/discharge cycles at the current densities of 5 and 15 A g− 1, respectively. On the other hand, Ni,Zn-MOF derived hydroide@C/Ni foam presented the superior capacities of 545 mAh g− 1 and 406 mAh g− 1 as well as proper cycle lifes of 91.8 % and 78.3 % after 6000 cycling at the applied loads of 5 and 15 A g− 1, respectively. Based on these findings, both of these fabricated battery-type electrodes are introduced as the promising candidates for use in energy storage devices.

3D hierarchically porous zinc–nickel–cobalt oxide nanosheets grown on Ni foam as binder-free electrodes for electrochemical energy storage

2015 ◽  
Vol 3 (47) ◽  
pp. 24022-24032 ◽  
Author(s):  
Huixin Chen ◽  
Qiaobao Zhang ◽  
Xiang Han ◽  
Junjie Cai ◽  
Meilin Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal Oxides ◽  
Mixed Valence ◽  
Building Blocks ◽  
Energy Storage Devices ◽  
Hierarchically Porous ◽  
Storage Devices ◽  
Valence States ◽  
Nickel Cobalt Oxide ◽  
Binder Free

3D hierarchically porous transition metal oxides, particularly those involving different metal ions of mixed valence states and constructed from interconnected nano-building blocks directly grown on conductive current collectors, are promising electrode candidates for energy storage devices such as Li-ion batteries and supercapacitors.

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