Ni-Co oxide amorphous alloy composite electrode with porous structure at surface layer and preparation method of amorphous alloy composite electrode
A nickel-cobalt oxide and amorphous alloy technology, applied in the field of electrochemical energy, can solve the problems of low production efficiency, high cost, cumbersome process, etc., and achieve the effects of small impedance, short process and simple preparation process
Inactive Publication Date: 2018-05-18
ANHUI UNIVERSITY OF TECHNOLOGY
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[0028] The specific content involved in the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following specific examples.
[0029] The whole preparation process of the present invention is completed according to the following steps:
[0030] (1) Use raw materials with a purity of not less than 99.5%, and make the raw materials according to the alloy composition Al 77 Ni 10 Co 4 Cu 3 Y 6 Make a ratio. The prepared raw materials are smelted in a vacuum arc furnace, and the smelting is repeated 6 times to ensure that the alloy composition is uniform as much as possible, thereby forming a master alloy ingot.
[0031] (2) After the mother alloy ingot is cooled, take it out from the electric arc furnace, put it into a quartz tube with a nozzle after being broken, put the quartz tube into a vacuum induction melting furnace, and heat the alloy again to melt, th...
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Abstract
The invention discloses a Ni-Co oxide amorphous alloy composite electrode with a porous structure at a surface layer and a preparation method of the amorphous alloy composite electrode, and belongs tothe technical field of electrochemical energy. The composite electrode is prepared by electrochemical corrosion of an amorphous alloy strip, and the chemical constituent of the amorphous alloy stripis Al<80-x>Ni<10>Co<4>Cu<x>Y<6> (1<=x<=5). The preparation comprises the steps of firstly, preparing mother alloy from a raw material by employing arc melting; secondly, preparing an aluminum-based amorphous alloy strip by a vacuum strip throwing machine; thirdly, immersing the alloy strip in an electrolyte for corrosion; and finally, charging and discharging the corroded alloy strip in an electrochemical working station to form a composite electrode of a Ni-Co oxide surface layer and an amorphous matrix. In the composite electrode prepared by the invention, a current collector is not needed to be added, chemical combination of the current collector and an active substance is prevented, and moreover, relatively high specific capacity is achieved; and on the other hand, the employed processis simple, is moderate in condition and relatively low in cost and has a wide application prospect.
Description
technical field [0001] The invention belongs to the technical field of electrochemical energy, and particularly relates to a composite electrode of nickel-cobalt oxide and amorphous alloy and a preparation method thereof. Background technique [0002] The worldwide fossil energy crisis and environmental climate change have greatly promoted the rapid development of energy technologies in various countries. However, energy storage devices have a decisive impact on the storage and utilization of energy. Suitable energy storage devices such as electrochemical energy storage and conversion devices are an important basis for the large-scale development of electrochemical energy and the utilization of renewable clean energy. With the rapid growth of energy demand in the whole society, the energy storage carriers we use are developing in the direction of high power density, long cycle life, fast charging and discharging speed, and no pollution to the environment. In the 1980s and ...
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Login to View More IPC IPC(8): H01G11/26H01G11/46H01G11/86
CPCY02E60/13H01G11/26H01G11/46H01G11/86
Inventor 王建国杨浩赵慧李维火
Owner ANHUI UNIVERSITY OF TECHNOLOGY