A nickel-zinc microbattery based on reconstructed epitaxial phase and its preparation method
A micro-battery and epitaxy technology, applied in the field of electrochemical energy storage, can solve the problem that nickel-zinc batteries cannot have both ultra-high rate performance and electrochemical stability, and achieve continuous and controllable preparation process, green and environmental protection repetition rate, synthesis simple craftsmanship
Active Publication Date: 2022-06-03
WUHAN UNIV OF TECH
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Problems solved by technology
[0005] In view of this, the present invention aims to propose a nickel-zinc micro-battery based on reconstituted epitaxial phase and its preparation method to solve the problem that the existing nickel-zinc battery cannot have both ultra-high rate performance and electrochemical stability
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preparation example Construction
[0054] The reconstituted porous nickel microelectrode is subjected to a constant current zinc reduction treatment under a two-electrode system.
Embodiment 1
[0071] The nickel micro-electrode and the assembling nickel-zinc micro-battery are prepared with Example 1, and its synthesis schematic diagram is shown in Figure 1. first in
[0075] FIG. 7 is a schematic diagram of the zincization treatment of the reconstituted porous nickel microelectrode. The basic process is to first treat nickel under the condition of lye.
[0076] FIG. 8 is a graph of the rate performance of the electro-zinc-plated microelectrode, and the reactivation treatment of the positive electrode nickel. Due to the dissolution of negative zinc
Embodiment 2
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Abstract
The invention provides a nickel-zinc micro-battery based on a reconstructed epitaxial phase and a preparation method thereof. The preparation method comprises the following steps: adding nickel sulfate, copper sulfate, and boric acid into deionized water to obtain an electroplating solution; using the electroplating solution as an electrolytic In the first three-electrode system, nickel-copper alloy co-deposition and partial etching were carried out to obtain nanoporous nickel microelectrodes; in the second three-electrode system, nanoporous nickel microelectrodes were placed in potassium hydroxide solution for Reconstructed and activated to obtain a reconstructed porous nickel microelectrode; in situ reduction of the reconstructed porous nickel microelectrode to obtain a zincized nanoporous nickel microelectrode; the zincized nanoporous nickel microelectrode is used as the positive electrode, electroplated with zinc The microelectrode is used as the negative electrode, and the alkali solution and PDMS capping treatment are added to assemble the nickel-zinc micro-battery based on the reconstructed epitaxial phase. The nickel-zinc micro-battery prepared by the invention has ultra-high rate performance and electrochemical stability.
Description
A nickel-zinc microbattery based on reconstructed epitaxial phase and its preparation method technical field The present invention relates to electrochemical energy storage technical field, specifically, relate to a kind of nickel-zinc microstructure based on reconstruction epitaxial phase A battery and a method of making the same. Background technique [0002] With the diversified development of miniature functional devices, it has both capacitor-like stability and high rate performance, and Micro energy storage devices similar to batteries with sufficient capacity supply have become a new development demand. By combining with a variety of functional materials or devices Through integration, miniature energy storage devices can perform electrical energy conversion for many functional systems, such as self-charging systems for energy harvesting, implanted biosensors and wearable devices. [0003] Generally speaking, micro supercapacitors have the advantages of high cu...
Claims
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IPC IPC(8): H01M10/38H01M4/04H01M4/38H01M4/62H01M4/02H01M10/36B82Y30/00B82Y40/00
CPCH01M10/38H01M10/36H01M4/02H01M4/0452H01M4/38H01M4/62B82Y30/00B82Y40/00H01M2004/021H01M2004/028Y02P70/50
Inventor 麦立强朱哲何亮阚如御
Owner WUHAN UNIV OF TECH
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