scholarly journals Boosting the Electrochemical Performance of Polyaniline by One-Step Electrochemical Deposition on Nickel Foam for High-Performance Asymmetric Supercapacitor

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 270
Author(s):  
Syed Shaheen Shah ◽  
Himadri Tanaya Das ◽  
Hasi Rani Barai ◽  
Md. Abdul Aziz
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Nickel Foam ◽  
Conductive Polymer ◽  
Negative Electrode ◽  
Electrochemical Performances ◽  
Asymmetric Supercapacitor ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
One Step

Energy generation can be clean and sustainable if it is dependent on renewable resources and it can be prominently utilized if stored efficiently. Recently, biomass-derived carbon and polymers have been focused on developing less hazardous eco-friendly electrodes for energy storage devices. We have focused on boosting the supercapacitor’s energy storage ability by engineering efficient electrodes in this context. The well-known conductive polymer, polyaniline (PANI), deposited on nickel foam (NF) is used as a positive electrode, while the activated carbon derived from jute sticks (JAC) deposited on NF is used as a negative electrode. The asymmetric supercapacitor (ASC) is fabricated for the electrochemical studies and found that the device has exhibited an energy density of 24 µWh/cm2 at a power density of 3571 µW/cm2. Furthermore, the ASC PANI/NF//KOH//JAC/NF has exhibited good stability with ~86% capacitance retention even after 1000 cycles. Thus, the enhanced electrochemical performances of ASC are congregated by depositing PANI on NF that boosts the electrode’s conductivity. Such deposition patterns are assured by faster ions diffusion, higher surface area, and ample electroactive sites for better electrolyte interaction. Besides advancing technology, such work also encourages sustainability.

CoOOH ultrathin nanoflake arrays aligned on nickel foam: fabrication and use in high-performance supercapacitor devices

2016 ◽  
Vol 4 (33) ◽  
pp. 12833-12840 ◽  
Author(s):  
Dongbin Zhang ◽  
Xianggui Kong ◽  
Yufei Zhao ◽  
Meihong Jiang ◽  
Xiaodong Lei
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Nickel Foam ◽  
Asymmetric Supercapacitor ◽  
Energy Storage Devices ◽  
Step Method ◽  
Storage Devices ◽  
Reduced Graphene

A CoOOH/NF ultrathin nanoflake array is fabricated by a facile two-step method. Furthermore, an asymmetric supercapacitor was assembled with CoOOH/NF and reduced graphene oxide, displaying excellent properties as energy storage devices.

One-step synthesized mesoporous MnO2@MoS2 nanocomposite for high performance energy storage devices

2018 ◽  
Vol 824 ◽  
pp. 226-237 ◽  
Author(s):  
Neha Kanaujiya ◽  
Nagesh Kumar ◽  
A.K. Srivastava ◽  
Yogesh Sharma ◽  
G.D. Varma
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
One Step

scholarly journals Electrodeposited Polyaniline Nanofibers and MoO3 Nanobelts for High-Performance Asymmetric Supercapacitor with Redox Active Electrolyte

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2303
Author(s):  
Wei Meng ◽  
Yanlin Xia ◽  
Chuanguo Ma ◽  
Xusheng Du
Keyword(s):  
High Performance ◽  
Hydrothermal Reaction ◽  
Conductive Polymer ◽  
Negative Electrode ◽  
Superior Performance ◽  
Molybdenum Oxides ◽  
Asymmetric Supercapacitor ◽  
Energy Storage Devices ◽  
Pani Nanofibers ◽  
Redox Active

Transition molybdenum oxides (MoO3) and conductive polymer (polyaniline, PANI) nanomaterials were fabricated and asymmetric supercapacitor (ASC) was assembled with MoO3 nanobelts as negative electrode and PANI nanofibers as a positive electrode. Branched PANI nanofibers with a diameter of 100 nm were electrodeposited on Ti mesh substrate and MoO3 nanobelts with width of 30–700 nm were obtained by the hydrothermal reaction method in an autoclave. Redox active electrolyte containing 0.1 M Fe2+/3+ redox couple was adopted in order to enhance the electrochemical performance of the electrode nano-materials. As a result, the PANI electrode shows a great capacitance of 3330 F g−1 at 1 A g−1 in 0.1 M Fe2+/3+/0.5 M H2SO4 electrolyte. The as-assembled ASC achieved a great energy density of 54 Wh kg−1 at power density of 900 W kg−1. In addition, it displayed significant cycle stability and its capacitance even increased to 109% of the original value after 1000 charge–discharge cycles. The superior performance of the capacitors indicates their promising application as energy storage devices.

In Situ Growth of FeCo-Selenide on Ni Foam as High-Performance Electrode for Electrochemical Energy Storage Devices

NANO ◽  
2018 ◽  
Vol 13 (07) ◽  
pp. 1850078 ◽  
Author(s):  
An Ye ◽  
Jiqiu Qi ◽  
Yanwei Sui ◽  
Fei Yang ◽  
Fuxiang Wei ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Specific Capacity ◽  
Negative Electrode ◽  
Storage Device ◽  
Asymmetric Supercapacitor ◽  
Ni Foam ◽  
Energy Storage Devices ◽  
Practical Applications ◽  
Nanosheet Arrays

A solid-state energy storage device has been fabricated using FeCo-selenide nanosheet arrays as positive electrode and Fe2O3 nanorod as negative electrode. As an electrode material, the ternary FeCo-selenide nanosheet arrays supported by Ni foam show a highest specific capacitance of 978 F/g (specific capacity of 163[Formula: see text]mAh/g) at 1 A/g and a superior cycle behavior of 81.2% are obtained after 5000 cycles at current density of 4 A/g. The asymmetric supercapacitor achieves the maximum energy density of 34.6[Formula: see text]W[Formula: see text]h/kg at the power density of 759.6[Formula: see text]W/kg. Furthermore, the superior cycling stability with 83% retention of initial capacitance after 5000 cycles further verify the practical applications of FeCo-selenide//Fe2O3 asymmetric supercapacitor. Meanwhile, the LED bulb and the light board of “CUMT” are lighted by connecting several capacitors to form a series circuit.

Nanostructured porous wires of iron cobaltite: novel positive electrode for high-performance hybrid energy storage devices

2015 ◽  
Vol 3 (32) ◽  
pp. 16849-16859 ◽  
Author(s):  
Afshin Pendashteh ◽  
Jesus Palma ◽  
Marc Anderson ◽  
Rebeca Marcilla
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Energy ◽  
Hybrid Energy Storage

Nanostructured porous wires of FeCo2O4 supported on nickel foam were synthesized and employed as binder/additive-free electrodes in asymmetric aqueous supercapacitors, showing a high energy density of 23 Wh kg−1.

scholarly journals One-Step and Morphology-Controlled Synthesis of Ni-Co Binary Hydroxide on Nickel Foam for High-Performance Supercapacitors

2020 ◽  
Vol 10 (11) ◽  
pp. 3814
Author(s):  
Xiao Fan ◽  
Per Ohlckers ◽  
Xuyuan Chen
Keyword(s):  
High Performance ◽  
Nickel Foam ◽  
Rate Capability ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
One Step ◽  
Binder Free ◽  
Current Densities ◽  
Binary Material

Ni-Co binary hydroxide grown on nickel foam was synthesized through a facile one-step process for pseudocapacitive electrode application. The morphology of the fabricated binary hydroxide, evolving from nanosheet to nanowire, was highly controllable by tuning the Ni:Co ratio. In systematical electrochemical measurements, the prepared binary material on nickel foam could be employed as a binder-free working electrode directly. The optimal composition obtained at the Ni:Co ratio of 5:5 in integrated nanosheet/nanowire geometry exhibited high specific capacitances of 2807 and 2222 F/g at current densities of 1 and 20 A/g, equivalent to excellent rate capability. The capacitance loss was 19.8% after 2000 cycles, demonstrating good long-term cyclic stability. The outstanding supercapacitors behaviors benefited from unique structure and synergistic contributions, indicating the great potential of the obtained binary hydroxide electrode for high-performance energy storage devices.

Solid-State Microwave Synthesis CuO/CNT: A High-Performance Electrode Material for Supercapacitors

NANO ◽  
2020 ◽  
Vol 15 (08) ◽  
pp. 2050102
Author(s):  
Xiaoqi Tan ◽  
Xiaolei Yue ◽  
Meng Yuan ◽  
Shuxia Liu ◽  
Yaodong Zhang ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Performance ◽  
Aqueous Electrolyte ◽  
Electrochemical Stability ◽  
Electrochemical Performances ◽  
Asymmetric Supercapacitor ◽  
X Ray Diffraction ◽  
Energy Storage Devices ◽  
X Ray ◽  
Storage Devices

CuO/CNT composites were synthesized via simple and rapid microwave approach. The nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Further, the electrochemical performances of CuO/CNT composites were evaluated. The prepared samples displayed high specific capacitances of 164.5[Formula: see text]F[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text], during the cycle process, the capacitance value aggrandized to 274.7[Formula: see text]F[Formula: see text]g[Formula: see text], and the capacitance remained at 166% of the primary value after 10 000 turns. Moreover, the CuO/CNT//AC asymmetric supercapacitor (ASC) exhibited an energy density of 17.08[Formula: see text]Wh[Formula: see text]kg[Formula: see text] at 775[Formula: see text]W[Formula: see text]kg[Formula: see text] and excellent electrochemical stability in 6M KOH aqueous electrolyte, showing its enormous potential in energy-storage devices.

scholarly journals Polyaniline Nanotubes/Carbon Cloth Composite Electrode by Thermal Acid Doping for High-Performance Supercapacitors

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2053 ◽  
Author(s):  
Jia Hui ◽  
Daoxin Wei ◽  
Jing Chen ◽  
Zhou Yang
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Composite Electrode ◽  
Low Cost ◽  
Electrochemical Performances ◽  
Carbon Cloth ◽  
Composite Electrodes ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
One Step

Carbon materials have been widely used in designing supercapacitors (SCs) but the capacitance is not ideal. Herein, we synthesize polyaniline (PANI) nanotubes on the basis of a carbon cloth (CC) through a one-step self-degradation template method, and fabricate a CC@PANI NTs-H (CC@PANI nanotubes doping at high temperature) composite electrode by thermal acid doping. The CC@PANI NTs-H electrode obviously exhibits better electrochemical performance with a gravimetric capacitance of 438 F g−1 and maintains 86.8% after 10,000 cycles than the CC@PANI NTs-R (CC@PANI nanotubes doping at room temperature) electrode. Furthermore, we assemble a flexible solid state supercapacitor (FSSC) device with the as-prepared CC@PANI NTs-H composite electrodes, showing good flexibility and outstanding electrochemical performances with a high gravimetric capacitance of 247 F g−1, a large energy density of 21.9 Wh kg−1, and a capacitance retention of 85.4% after 10,000 charge and discharge cycles. Our work proposes a novel and easy pathway to fabricate low-cost FSSCs for the development of energy storage devices.

Cu-based materials as high-performance electrodes toward electrochemical energy storage

2014 ◽  
Vol 07 (01) ◽  
pp. 1430001 ◽  
Author(s):  
Kunfeng Chen ◽  
Dongfeng Xue
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Low Cost ◽  
Lithium Ion ◽  
Water Soluble ◽  
Electrochemical Energy Storage ◽  
Electrochemical Performances ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Electrochemical Energy

Cu -based materials, including metal Cu and semiconductors of Cu 2 O and CuO , are promising and important candidates toward practical electrochemical energy storage devices due to their abundant, low cost, easy synthesis and environmentally friendly merits. This review presents an overview of the applications of Cu -based materials in the state-of-art electrochemical energy storage, including both lithium-ion batteries and supercapacitors. The synthesis chemistry, structures and the corresponding electrochemical performances of these materials are summarized and compared. During chemical synthesis and electroactive performance measurement of Cu -based materials, we found that Cu – Cu 2 O – CuO sequence governs all related transformations. Novel water-soluble CuCl 2 supercapacitors with ultrahigh capacitance were also reviewed which can advance the understanding of intrinsic mechanism of inorganic pseudocapacitors. The major goal of this review is to highlight some recent progresses in using Cu -based materials for electrochemical energy storage.

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