Transition metal oxide/binary carbon network positive electrode composite material and aluminum-ion battery

An aluminum ion battery and transition metal technology, applied in secondary batteries, battery electrodes, circuits, etc., can solve the problems of poor structural stability and low conductivity, and achieve high power performance, high conductivity, and good compatibility Effect

Active Publication Date: 2016-11-16
深圳博磊达新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a transition metal oxide / binary carbon mesh positive electrode composite material, thereby solving the problems of low electrical conductivity and poor structural stability in the existing aluminum ion battery positive electrode materials

Method used

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  • Transition metal oxide/binary carbon network positive electrode composite material and aluminum-ion battery
  • Transition metal oxide/binary carbon network positive electrode composite material and aluminum-ion battery

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The transition metal oxide / binary carbon mesh positive electrode composite material of this embodiment is prepared by the following steps:

[0031] 1) Add 0.5g of iron and 5g of citric acid into 100g of water and mix to obtain a catalyst precursor solution;

[0032] 2) 10g TiO 2 Soak in the catalyst precursor solution for 2 hours, separate, and then dry at 100°C for 2 hours; repeat the soaking and drying process 5 times to obtain TiO 2 / Catalyst precursor composite material;

[0033] 3) Put 8g TiO 2 / Catalyst precursor composite material is placed in the middle of the tubular resistance furnace, under the protection of argon, the temperature is raised to 800°C at a rate of 3°C / min and kept for 2h, and the hydrogen is used to reduce the catalyst precursor (the time for introducing hydrogen is 30min, The flow rate is 100ml / min); the temperature is lowered to 700°C and kept for 2 hours, and the mixed gas of acetylene as the carbon source gas and argon as the carrier ga...

Embodiment 2

[0038] A transition metal oxide / binary carbon mesh positive electrode composite material in this embodiment is prepared by the following steps:

[0039] 1) Add 0.1g of nickel and 1g of citric acid into 100g of water and mix to obtain a catalyst precursor solution;

[0040] 2) 1g Cr 2 o 3 Soak in the catalyst precursor solution for 1 hour, separate, and then dry at 50°C for 2 hours; repeat soaking and drying once to obtain Cr 2 o 3 / Catalyst precursor composite material;

[0041] 3) 1g Cr 2 o 3 / The catalyst precursor composite material is placed in the middle of the tubular resistance furnace, under the protection of argon, the temperature is raised to 800°C at a rate of 1°C / min, and then kept for 1h, and the catalyst precursor is reduced by hydrogen (the time for introducing hydrogen is 1h , the flow rate is 50ml / min); the temperature is lowered to 700°C and kept for 1h, and the mixed gas of acetylene as the carbon source gas and argon as the carrier gas is introduced...

Embodiment 3

[0046] A transition metal oxide / binary carbon mesh positive electrode composite material in this embodiment is prepared by the following steps:

[0047] 1) Add 1g of cobalt and 10g of citric acid into 100g of water and mix to obtain a catalyst precursor solution;

[0048] 2) 20g MnO 2 Soak in the catalyst precursor solution for 2 hours, separate, and then dry at 200°C for 1 hour; repeat the soaking and drying process 10 times to obtain MnO 2 / Catalyst precursor composite material;

[0049] 3) 20g MnO 2 / The catalyst precursor composite material is placed in the middle of the tubular resistance furnace, under the protection of argon, the temperature is raised to 800°C at a rate of 5°C / min, and then kept for 1h, and the catalyst precursor is reduced (the time for introducing hydrogen is 2h, The flow rate is 150ml / min); the temperature is lowered to 700°C and kept for 1h, and the mixed gas of acetylene as the carbon source gas and argon as the carrier gas is introduced for c...

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Abstract

The invention relates to a transition metal oxide/binary carbon network positive electrode composite material and an aluminum-ion battery. Preparation of the positive electrode composite material comprises the steps of (1) adding a catalyst and a citric acid to water for mixing to obtain a catalyst precursor solution; (2) soaking a transition metal oxide into the catalyst precursor solution and carrying out separating and drying to obtain a transition metal oxide/catalyst precursor composite material; and (3) preparing a transition metal oxide/carbon nanotube composite material through chemical vapor deposition, soaking the transition metal oxide/carbon nanotube composite material into a graphene oxide dispersion liquid, carrying out separating and drying to obtain the transition metal oxide/carbon nanotube/graphene oxide composite material and then carrying out reductive heat treatment to obtain the transition metal oxide/binary carbon network positive electrode composite material. According to the positive electrode composite material provided by the invention, a binary carbon network coats the surface of the transition metal oxide, so that the conductivity and the structure stability of the positive electrode material are improved; the cycle performance of the electrode material is improved; and the transition metal oxide/binary carbon network positive electrode composite material can be applied to preparation of the high-performance aluminum-ion battery.

Description

technical field [0001] The invention belongs to the field of aluminum ion batteries, and in particular relates to a transition metal oxide / binary carbon mesh positive electrode composite material and an aluminum ion battery using the positive electrode composite material. Background technique [0002] With the rapid development of electronic and communication equipment, electric vehicles, and new power sources such as wind power generation and photovoltaic power generation, there is an urgent need for a high energy density, safe, green and environmentally friendly battery material resource-rich material and its battery to meet market demand. . The secondary aluminum battery with aluminum metal or aluminum alloy as the negative electrode and sulfur-based, conductive polymer and transition metal oxide materials as the positive electrode is the most attractive battery system to meet these requirements. Compared with existing electrode materials, aluminum, the metal element wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/583H01M4/62H01M10/054H01M10/0568
CPCH01M4/362H01M4/483H01M4/583H01M4/625H01M10/054H01M10/0568Y02E60/10
Inventor 王燕龙官奎黄璐原东甲赵晓锋
Owner 深圳博磊达新能源科技有限公司
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