NiCo2O4 nanowire based flexible electrode materials for asymmetric supercapacitors

2018 ◽  
Vol 42 (9) ◽  
pp. 7399-7406 ◽  
Author(s):  
Depeng Zhao ◽  
Fang Hu ◽  
Ahmad Umar ◽  
Xiang Wu
Keyword(s):  
Energy Storage ◽  
Rational Design ◽  
Electrode Materials ◽  
Energy Storage Devices ◽  
Supercapacitor Electrode ◽  
Flexible Electrode ◽  
Asymmetric Supercapacitors ◽  
Storage Devices ◽  
Supercapacitor Electrode Materials ◽  
Energy And Power Density

The rational design and construction of supercapacitor electrode materials with prominent energy and power density play an indispensable role for their potential application in energy storage devices.

Electrochemical fabrication of polyaniline/graphene paper (PANI/GP) supercapacitor electrode materials on free-standing flexible graphene paper

2021 ◽  
pp. 095400832110231
Author(s):  
Fengyan Lv ◽  
Shanxin Xiong ◽  
Xiaoqin Wang ◽  
Jia Chu ◽  
Runlan Zhang ◽  
...  
Keyword(s):  
Specific Capacitance ◽  
Electrode Materials ◽  
Electrochemical Polymerization ◽  
High Specific Capacitance ◽  
Energy Storage Devices ◽  
Supercapacitor Electrode ◽  
Free Standing ◽  
Flexible Electrode ◽  
Storage Devices ◽  
Graphene Paper

Free-standing flexible supercapacitive electrodes have practical application for wearable energy storage devices. In this paper, graphene paper (GP), a flexible electrode substrate, was prepared by one-step reduction of graphene oxide (GO) using HI solution. GP can be used independently as a flexible electrode with specific capacitance of 227 F/g. In order to make up for the shortage of GP specific capacitance storage, polyaniline (PANI) with high specific capacitance and good electrical conductivity was selected to composite with GP by electrochemical polymerization approach. This method to fabricate electrode material by direct electrochemical polymerization avoids the use of conductive binder and organic solvent. Owing to the specific capacitance contribution of PANI and GP, the PANI/GP composites exhibit higher specific capacitance when the polymerization time is 30 s and the polymerization voltage is 0.8 V. At 1 A/g current density, the specific capacitance of composite is up to 759 F/g, which is 3.34 times of neat GP.

Facile synthesis of NiCoMnO4 nanoparticles as novel electrode materials for high-performance asymmetric energy storage devices

RSC Advances ◽  
2016 ◽  
Vol 6 (34) ◽  
pp. 28970-28980 ◽  
Author(s):  
Afshin Pendashteh ◽  
Jesus Palma ◽  
Marc Anderson ◽  
Rebeca Marcilla
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
High Mass ◽  
Facile Synthesis ◽  
Energy Storage Devices ◽  
Asymmetric Supercapacitors ◽  
High Capacitance ◽  
Storage Devices

Hydrothermally synthesized NiCoMnO4 NPs showed a high capacitance of 510 F g−1 with high mass loaded electrodes (∼10 mg cm−2). Integrated with RGO NSs, their viability was testified for high-performance asymmetric supercapacitors.

scholarly journals The rise of organic electrode materials for energy storage

2016 ◽  
Vol 45 (22) ◽  
pp. 6345-6404 ◽  
Author(s):  
Tyler B. Schon ◽  
Bryony T. McAllister ◽  
Peng-Fei Li ◽  
Dwight S. Seferos
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Organic Electrode ◽  
Future Work

We review organic electrode materials for energy storage devices and suggest directions for future work in this area.

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.

Recent Advances on the Application of Graphene Quantum Dots in Energy Storage

2021 ◽  
Vol 15 ◽  
Author(s):  
Feng Shi ◽  
Quanrun Liu
Keyword(s):  
Quantum Dots ◽  
Energy Storage ◽  
Potential Application ◽  
Active Sites ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Graphene Quantum Dots ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
New Energy

Background: As an emerging carbon nanomaterial, graphene quantum dots (GQDs) have shown great potential application in new energy storage devices due to their unique small size effect and abundant edge active sites. This work introduces the main synthesis strategies of GQDs, which includes top-down and bottom-up methods; the application examples of GQDs and GQDs-based composites in energy storage are reviewed, and more, the unique advantages of GQDs are used in supercapacitors, Lithium-ion batteries (LIBs) and Lithium-sulfur batteries (Li–S batteries) are highlighted. The problems and development prospects in this growing area are also discussed. Method: We conducted a detailed search of “the application of GQDs in energy storage devices” in the published papers and the public patents based on Web of Science database in the period from 2014 to 2020. The corresponding literature was carefully evaluated and analyzed. Results: Sixty papers and twenty-eight recent patents were included in this mini-review. The significant advances in the recent years are summarized with comparative and balanced discussion. Thanks to the unique properties of large specific surface area, high conductivity and abundant active sites, GQDs have unparalleled potential application for new energy storage, especially improving the specific capacity and cycle stability of supercapacitors, LIBs and Li-S batteries. Conclusion: The findings of this mini-review confirm the importance of GQDs, show the enhanced electrochemical performance in supercapacitors, LIBs and Li-S batteries, and also provide a helpful guide to design and fabricate highefficiency electrode materials.

Porous Activity of Biomass-Activated Carbon Enhanced by Nitrogen-Dopant Towards High-Performance Lithium Ion Hybrid Battery-Supercapacitor

2021 ◽  
Author(s):  
Juan Yu ◽  
Xuyang Wang ◽  
Jiaxin Peng ◽  
Xuefeng Jia ◽  
Linbo Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Pore Structure ◽  
High Performance ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Utilization Efficiency ◽  
Energy Storage Devices ◽  
Storage Devices

Abstract Biomass-activated carbon materials are promising electrode materials for lithium-ion hybrid capacitors (LiCs) because of their natural hierarchical pore structure. The efficient utilization of structural pores in activated carbon is very important for their electrochemical performance. Herein, porous biomass-activated carbon (PAC) with large specific surface area was prepared using a one-step activation method with biomass waste as the carbon source and ZnCl2 as the activator. To further improve its pore structure utilization efficiency, the PAC was doped with nitrogen using urea as the nitrogen source. The experimental results confirmed that PAC-1 with a high nitrogen doping level of 4.66% exhibited the most efficient pore utilization among all the samples investigated in this study. PAC-1 exhibited 92% capacity retention after 8000 cycles, showing good cycling stability. Then, to maximize the utilization of high-efficiency energy storage devices, LiNi0.8Co0.15Al0.05O2 (NCA), a promising cathode material for lithium-ion batteries with high specific capacity, was compounded with PAC-1 in different ratios to obtain NCA@PC composites. The NCA@PC-9 composite exhibited excellent capacitance in LiCs and an energy density of 210.9 Wh kg-1 at a high power density of 13.3 kW kg-1. These results provide guidelines for the design of high-performance and low-cost energy storage devices.

Three-dimensional MXene/BCN Microflowers for Wearable All-solid-state microsupercapacitors

2021 ◽  
Author(s):  
Dan Tu ◽  
Wenyao Yang ◽  
Yi Li ◽  
Yujiu Zhou ◽  
LiuWei Shi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Three Dimensional ◽  
Energy Storage Devices ◽  
Flexible Electrode ◽  
Storage Devices

Abstract: Modified MXene (Ti3C2Tx) is attractive as a flexible electrode for wearable energy storage devices. In this work, a convenient and effective method was proposed to change the conventional 2D...

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