scholarly journals The Composite Nickel Hydroxide / Activated Carbon as Electrode Material in the Battery Storage Devices

2015 ◽  
Vol 16 (2) ◽  
pp. 355-359
Author(s):  
О.M. Khemiy ◽  
І.М. Budzulyak ◽  
O.V. Morushko ◽  
Yu.Yu. Stubrov ◽  
I.P. Yaremiy ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electrochemical Properties ◽  
Electrode Material ◽  
Nickel Hydroxide ◽  
Composite Electrode ◽  
Specific Capacity ◽  
Diffraction Peak ◽  
Battery Storage ◽  
Storage Devices ◽  
A Current

The paper presents the results of studies of the structure and electrochemical properties of composite β-Ni(OH)2/C. It is shown that the diffractograms composite sintered β-Ni(OH)2/C in addition to peaks characteristic NiO, there is a broad diffraction peak at 23 °, which can be attributed to the activated carbon. Found that the composite electrode based on β-Ni(OH)2/C has a specific capacity, which is almost 25 times higher than the capacity for the output of nickel hydroxide at a current of 1 mA.

scholarly journals The Structure of The Electrode Material Based on NI(OH)2/C Composite for Energy Storage Devices

2016 ◽  
Vol 3 (1) ◽  
pp. 23-28
Author(s):  
O. Khemiy ◽  
L. Yablon ◽  
I. Budzulyak ◽  
O. Morushko
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Electrode Material ◽  
Diffraction Peak ◽  
Energy Storage Devices ◽  
Xrd Pattern ◽  
Storage Devices

The paper presents the results of studies of the structure β -Ni(OH)2/C composite. It isshown that the XRD-pattern of heated composite β -Ni(OH)2 /C has a broad diffraction peak at 23°,which can be attributed to the activated carbon in addition to peaks characteristic for NiO

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.

scholarly journals Sago Waste Based Activated Carbon Film as an Electrode Material for Electric Double Layer Capacitor

2010 ◽  
Vol 4 (1) ◽  
pp. 117-124 ◽  
Author(s):  
H. Aripin ◽  
L. Lestari ◽  
D. Ismail ◽  
S. Sabchevski
Keyword(s):  
Activated Carbon ◽  
Double Layer ◽  
Electrode Material ◽  
Electric Double Layer ◽  
Specific Capacity ◽  
Carbon Film ◽  
Electrochemical Characteristics ◽  
Double Layer Capacitor ◽  
Sago Waste ◽  
Double Layer Capacitors

In this feasibility study a novel prospective electrode material for electric double layer capacitors (EDLC) has been investigated. This promising material is activated carbon (AC) film produced using sago waste as a precursor. Important parameters of the technological process are the KOH to charcoal ratio and the content of the polytetrafluoroethylene (PTFE) binder. The influence of these parameters on the microtexture and pore structure and on the electrochemical characteristics of the AC films has been studied in detail. The measured specific surface area (SSA) of the samples is in the range from 212 to 1498 m2/g. It has been found that the presence of micropores increases the specific capacity while the presence of the mesopores acts in the opposite direction, because these mesopores are too wide in diameter for aqueous electrolyte. The specific capacitance of the studied samples has been found to be in the range from 16 to 64 F/g.

Prediction and optimization model of activated carbon double layer capacitors based on improved heuristic approach genetic algorithm neural network

2018 ◽  
Vol 35 (4) ◽  
pp. 1625-1638 ◽  
Author(s):  
Zhen Yang ◽  
Yun Lin ◽  
Xingsheng Gu ◽  
Xiaoyi Liang
Keyword(s):  
Neural Network ◽  
Genetic Algorithm ◽  
Activated Carbon ◽  
Prediction Model ◽  
Electrochemical Properties ◽  
Double Layer ◽  
Process Parameters ◽  
Electrode Material ◽  
Content Type ◽  
Double Layer Capacitors

PurposeThe purpose of this paper is to study the electrochemical properties of electrode material on activated carbon double layer capacitors. It also tries to develop a prediction model to evaluate pore size value.Design/methodology/approachBack-propagation neural network (BPNN) prediction model is used to evaluate pore size value. Also, an improved heuristic approach genetic algorithm (HAGA) is used to search for the optimal relationship between process parameters and electrochemical properties.FindingsA three-layer ANN is found to be optimum with the architecture of three and six neurons in the first and second hidden layer and one neuron in output layer. The simulation results show that the optimized design model based on HAGA can get the suitable process parameters.Originality/valueHAGA BPNN is proved to be a practical and efficient way for acquiring information and providing optimal parameters about the activated carbon double layer capacitor electrode material.

Experiment on Nano-Sized Activated Carbon/Zn-MnO2 Electrode Material

2010 ◽  
Vol 97-101 ◽  
pp. 2221-2224 ◽  
Author(s):  
Sheng Juan Li ◽  
Shu Lin Wang ◽  
Bo Xu ◽  
Lai Qiang Li
Keyword(s):  
Activated Carbon ◽  
Electrode Material ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Sol Gel ◽  
Nano Particles ◽  
Spherical Particles ◽  
Pore Size Distributions ◽  
Mean Size ◽  
Vibration Milling

Here Zn-doped MnO2 nano-material was synthesized by sol-gel method and comprised the composite electrode material with activated carbon nano-particles with different pore size distributions by roller vibration milling at room temperature. The microstructure and electrochemical performance of the nano-composite electrode materials were studied by AFM, XRD and electrochemical methods. The activated carbon nanomaterial displays spherical particles with 50nm mean size. Meanwhile the AC nano-particles combined with 10wt.% Zn- MnO2 material possess improved electrochemical property with specific capacitance up to 299 F/g.

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