Flexible manometer porous metal foil electrode and preparation method thereof

A nanoporous, metal foil technology, applied in nanotechnology, battery electrodes, chemical instruments and methods, etc., can solve difficult problems such as strength and toughness, and achieve simple preparation methods, solve brittle problems, and high conductivity.

Active Publication Date: 2016-10-12
宁波杰士兄弟工具有限公司
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AI Technical Summary

Problems solved by technology

It is difficult to further improve the strength and toughness of metal film electrodes in practical applications.

Method used

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  • Flexible manometer porous metal foil electrode and preparation method thereof
  • Flexible manometer porous metal foil electrode and preparation method thereof
  • Flexible manometer porous metal foil electrode and preparation method thereof

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preparation example Construction

[0027] (1) Preparation of transition metal alloys of different systems

[0028] Select Ni, Cu, Fe, Co, Mo, Mn and other metals as metal masterbatches, and prepare alloys of different systems by powder metallurgy, smelting, etc., among which Fe and Mn, which are easy to corrode, are used as corroded phases and their composition is controlled It is 60at%~70at% (atomic percentage), forming binary alloys or ternary alloys or quaternary alloys, such as binary alloys NiMn, ternary alloys NiCuMn, NiCoMn, NiCoFe and quaternary alloys NiCuCoMn, NiCuFeMn, etc.

[0029] (2) Selection of interlayer metal

[0030] The interlayer metal should have high inertia, good flexibility and not easy to be corroded. Metals such as Ni or Pt can be selected as the flexible conductive metal layer.

[0031] Among them, the metal content as the corroded phase accounts for 60 at% to 80 at% of the whole.

[0032] See Figure 1 to Figure 3 , the preparation method of the flexible nanoporous metal foil ele...

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Abstract

The invention relates to a flexible manometer porous metal foil electrode. The flexible manometer porous metal foil electrode comprises a flexible conductive metal layer in the middle and metal alloy layers on the two sides, and the metal alloy layers on the two sides are of a manometer porous structure. The invention further relates to a preparation method of the electrode. The preparation method includes the steps that 1, metal alloy plates with uniform structural constituents are prepared; 2, the two layers of metal alloy plates and the flexible conductive metal layer in the middle are prepared into a three-layer alloy composite plate; 3, the alloy composite plate is subjected to annealing treatment; 4, the annealed alloy composite plate is subjected to hot rolling or cold rolling; 5, the step 3 and the step 4 are repeatedly carried out till the alloy composite plate reaches a preset thickness; 6, the obtained alloy composite plate is subjected to surface grinding; 7, finish rolling is carried out till the needed thickness is reached; 8, the obtained alloy composite plate is subjected to chemical and electrochemical corrosion treatment, and the manometer porous structure is formed on the surface metal alloy layers; 9, an obtained electrode is subjected to polarization or low-temperature annealing treatment to achieve partial self-oxidation of the electrode.

Description

technical field [0001] The invention relates to a flexible nanoporous metal foil electrode and a preparation method thereof. Background technique [0002] Traditional nanoporous metals are widely used in the fields of electrocatalysis and electrochemical energy storage devices because of their advantages such as high specific surface area and high conductivity. Porous metal membranes with high strength can be prepared by powder metallurgy, but it is difficult to obtain nanoporous metal membranes with uniform pore size distribution by powder metallurgy. [0003] The dealloying method is a long-developed method for preparing porous metals: through the use of chemical or electrochemical corrosion methods for metals and nonmetals composed of different components, one or more of the more active ones are selectively corroded. Components to obtain porous metal. Although the dealloying method can be used to prepare nano-scale porous metals, it is difficult to directly apply the na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M4/1395B82Y40/00B01J23/72B01J23/745B01J23/75B01J23/755
CPCB01J23/72B01J23/745B01J23/75B01J23/755B82Y40/00H01M4/1395H01M4/366H01M4/38Y02E60/10
Inventor 康建立张少飞于镇洋张志佳赵乃勤
Owner 宁波杰士兄弟工具有限公司
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