Manufacturing method of composite electrode material
a manufacturing method and electrode material technology, applied in the manufacture of electrolytic capacitors, cell components, electrophoretic coatings, etc., can solve the problems of insufficient mixing of electrode materials, poor contact between electrode materials, and time-consuming methods, so as to improve the bonding properties between the conductive material layer and the active material layer, the effect of high specific capacitance and high current density charging/discharging
Inactive Publication Date: 2017-11-02
NAT CHIAO TUNG UNIV
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Benefits of technology
The present invention provides a composite electrode material for an energy storage device that improves bonding properties between conductive material layers and active material layers to maintain a high specific capacitance at a high current density charging / discharging. This reduces charging time and meets users' requirements. The manufacturing method simplifies the process and reduces the cost.
Problems solved by technology
However, the above method requires a mixing or a stage-by-stage approach to prepare the electrode material.
Such method is time-consuming and the electrode material cannot be sufficiently mixed.
Therefore, poor contact exists between the components of the electrode material, such that the electrochemical properties of the energy storage device decrease (e.g., a low specific capacitance) and a rapid decline in specific capacitance at a high-speed charging / discharging are observed.
Method used
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example 1
[0041]First, a graphene oxide was prepared through a Hummer's method. Specifically, 720 mL of H2SO4 and 80 mL of H3PO4 were uniformly mixed. Thereafter, 3 g of graphene and 12 g of KMnO4 were added to the mixture, the reaction temperature was increased to 60 C and the mixture was reacted for 18 hours. Afterwards, 600 mL of ice cubes (prepared by deionized water) and 5-10 mL of H2O2 were added to the mixture to stop the reaction. The mixture was then washed several times with deionized water, hydrochloric acid and ethanol, filtered by a glass fiber filter, and finally centrifuged. Next, ether was added to the mixture, filtered by a polytetrafluoroethylene (PTFE) filter with a pore size of 0.2 μm, and finally vacuum baked at 40° C. for 12 hours, and a solid graphene oxide was thus obtained.
[0042]Afterwards, 2 mM of Ni(NO3)2 and 4 mM of Co(NO3)2 were prepared in a 0.01 M phosphate buffered saline (PBS, pH=7.4) solution, and a graphene oxide PBS solution in which the graphene oxide had ...
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Abstract
Provided is a manufacturing method of a composite electrode material which includes the following steps. An electro-deposition device is provided. The electro-deposition device includes a mixed solution and a working electrode and an auxiliary electrode placed in the mixed solution. The mixed solution includes a conductive material precursor and an active material precursor. An alternating voltage is applied to the electro-deposition device, so as to perform a plurality of electrochemical reactions on a surface of the auxiliary electrode and therefore to form a composite electrode material.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 105113269, filed on Apr. 28, 2016. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUND OF THE INVENTIONField of Invention[0002]The present invention relates to a manufacturing method of an electrode material, and more particularly to a manufacturing method of a composite electrode material.Description of Related Art[0003]An energy storage technique usually indicates a storage of electric energy, mainly including an energy storage with physical properties (e.g., a capacitor), an energy storage with electrochemical properties (e.g., a battery) or a combination thereof (e.g., a supercapacitor).[0004]Generally speaking, an electrode material of the energy storage device is usually manufactured with a slurry coating, a chemical vapour deposition, a DC electroplating or a DC ...
Claims
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IPC IPC(8): C25D5/18H01M4/04H01G11/86H01G11/36H01G11/26H01G9/042H01G9/00C25D13/00
CPCC25D5/18C25D13/00H01M4/0452H01M4/0457H01G11/36H01G9/042H01G11/86H01G11/26H01G9/0029C25D3/562C25D7/00C25D15/00H01M4/366H01M4/525H01M4/624H01M4/625Y02E60/10H01G11/24H01G11/32H01G11/58
Inventor TSENG, TSEUNG-YUENYANG, CHIH-CHIEH
Owner NAT CHIAO TUNG UNIV