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Catalyst and preparation method thereof, and secondary battery containing catalyst

A secondary battery and catalyst technology, which can be applied to fuel cell type half cells and primary cell type half cells, battery electrodes, circuits, etc., can solve the problems of high catalyst cost, poor durability, hindering industrial production and application, etc. The effect of low cost, reduced production cost, and high-scale production value

Inactive Publication Date: 2021-02-19
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high cost and poor durability of this catalyst, its practical industrial production application is hindered.

Method used

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  • Catalyst and preparation method thereof, and secondary battery containing catalyst
  • Catalyst and preparation method thereof, and secondary battery containing catalyst
  • Catalyst and preparation method thereof, and secondary battery containing catalyst

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1 of the present invention provides a catalyst, which is a bifunctional catalyst used in a rechargeable metal-air secondary battery (especially preferably used in a zinc-air secondary battery). In other words, the catalyst of this embodiment can effectively catalyze the oxygen reduction reaction (ORR) of the secondary battery, and can also effectively catalyze the oxygen evolution reaction (OER) of the secondary battery. Specifically, the catalyst of this example includes (FeCoX) with a nanoporous structure 3 o 4 / Mn 3 o 4 The spinel oxide composite material, wherein X is a transition metal element other than Fe, Co, Mn, such as Ni, Cr, V, Nb or any combination thereof. In this embodiment, X is Ni. The (FeCoX) 3 o 4 It is a spherical structure, an ellipsoidal structure, and / or a skeleton structure. Such as figure 1 As shown, the (FeCoNi) in this example 3 o 4 Roughly spherical structure. The Mn 3 o 4 For the sheet structure. (FeCoNi) in the cata...

Embodiment 2

[0036] Embodiment 2 of the present invention provides a catalyst, which is a bifunctional catalyst used in a rechargeable metal-air secondary battery (especially preferably used in a zinc-air secondary battery). In other words, the catalyst of this embodiment can effectively catalyze the oxygen reduction reaction (ORR) of the secondary battery, and can also effectively catalyze the oxygen evolution reaction (OER) of the secondary battery. Specifically, the catalyst of this example includes (FeCoX) with a nanoporous structure 3 o 4 / Mn 3 o 4 The spinel oxide composite material, wherein X is a transition metal element other than Fe, Co, Mn, such as Ni, Cr, V, Nb or any combination thereof. In this embodiment, X is V. The (FeCoX) 3 o 4 It is a spherical structure, an ellipsoidal structure, and / or a skeleton structure. Such as Figure 4 As shown, the (FeCoV) in this example 3 o 4 Roughly a skeleton structure. The Mn 3 o 4 For the sheet structure. (FeCoV) in the catal...

Embodiment 3

[0043] Embodiment 3 of the present invention provides a catalyst, which is a bifunctional catalyst used in a rechargeable metal-air secondary battery (especially preferably used in a zinc-air secondary battery). In other words, the catalyst of this embodiment can effectively catalyze the oxygen reduction reaction (ORR) of the secondary battery, and can also effectively catalyze the oxygen evolution reaction (OER) of the secondary battery. Specifically, the catalyst of this example includes (FeCoX) with a nanoporous structure 3 o 4 / Mn 3 o 4 The spinel oxide composite material, wherein X is a transition metal element other than Fe, Co, Mn, such as Ni, Cr, V, Nb or any combination thereof. In this embodiment, X is Cr. The (FeCoCr) 3 o 4 It is a spherical structure, an ellipsoidal structure, and / or a skeleton structure. The Mn 3 o 4 For the sheet structure. (FeCoCr) in the catalyst of the present embodiment 3 o 4 Can effectively catalyze the oxygen evolution reaction ...

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Abstract

The present application discloses a secondary battery, a catalyst for the secondary battery, and a preparation method of the catalyst. The preparation method comprising the steps: S1: preparing an aluminum-based alloy from Al, Fe, Co, Mn, and X at a high temperature, wherein X is a transition metal element different from Fe, Co, and Mn; S2, placing the aluminum-based alloy in an alkaline solutionto prepare a powder alloy with a nano-porous structure, Al and the alkaline solution are subjected to a chemical reaction, and Fe, Co, Mn and X do not react with the alkaline solution chemically; S3,placing the powder alloy in an oxygen-containing atmosphere to be calcined, and preparing the spinel oxide composite material of the (FeCoX) 3O4 / Mn3O4 with the nano-porous structure.

Description

technical field [0001] The present invention relates to the field of battery technology, in particular to but not limited to a rechargeable metal-air secondary battery, a bifunctional catalyst used in the rechargeable metal-air secondary battery, and a preparation method of the bifunctional catalyst. Background technique [0002] Rechargeable metal-air secondary batteries, such as zinc-air secondary batteries, generally include two electrochemical reactions: oxygen evolution reaction (OER) during charging and oxygen reduction reaction (ORR) during discharging. In the prior art, commercial Pt / C catalysts and other noble metal catalysts (such as IrO 2 ) together to facilitate the charge-discharge process of rechargeable metal-air secondary batteries. However, the high cost and poor durability of this catalyst hinder its practical industrial production application. Therefore, how to develop a low-cost, high catalytic activity, and high stability catalyst is crucial for the te...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90H01M12/06
CPCH01M4/8825H01M4/9041H01M4/905H01M12/06Y02E60/10
Inventor 邱华军李诗吟
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL