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A positive electrode material for liquid and semi-liquid metal batteries

A positive electrode material and metal battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of low energy density of liquid metal batteries, difficulty in battery cell management, etc., to reduce battery costs, solve low operating voltage, The effect of increasing the operating voltage

Active Publication Date: 2020-10-16
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The lower working voltage makes the energy density of liquid metal batteries lower, and brings great difficulty to the management of battery cells, which brings great challenges to the practical application of liquid metal battery technology.

Method used

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  • A positive electrode material for liquid and semi-liquid metal batteries
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  • A positive electrode material for liquid and semi-liquid metal batteries

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0024] The invention provides a positive electrode material for liquid and semi-liquid metal batteries, the positive electrode material is metal Te, or a Te alloy formed by metal Te and more than one elemental substance in metal Sn, Sb, Pb, Bi, more preferably Ground, the chemical formula of described Te alloy is:

[0025] Te 50％～100％ sn 50％～0 、 Te 60％～100％ Sb 40％～0 、 Te 50％～100％ Pb 50％～0...

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Abstract

The invention belongs to electrode materials for energy storage batteries, in particular to a positive electrode material for liquid and semi-liquid metal batteries. The positive electrode material is formed of metal Te or Te and one or more simple substances in Sn, Sb, Pb, and Bi. Te alloy. The present invention creatively uses metal Te and alloys of Te and Sn, Sb, Pb, Bi as the positive electrode material, the high electronegativity of the metal Te can provide higher voltage, the melting point is low (449°C), the preparation of the Te alloy is simple, and the cost is low. And it has good electrochemical performance with the existing negative electrode materials. When it is applied to the positive electrode materials of liquid / semi-liquid metal batteries, it can effectively solve the problems of low working voltage of liquid / semi-liquid metal batteries and high operating temperature of batteries. Improve battery operating voltage, increase energy density, reduce operating temperature, and reduce battery cost, so it is especially suitable for liquid and semi-liquid metal batteries.

Description

technical field [0001] The invention belongs to electrode materials for energy storage batteries, in particular to a positive electrode material for liquid and semi-liquid metal batteries, which can solve the problems of low operating voltage and high operating temperature in liquid and semi-liquid metal batteries. Background technique [0002] The development and utilization of renewable energy has become an important way to solve existing energy and environmental problems. However, there are still great challenges in the effective use of wind and solar power generation. Large-scale energy storage is considered to be able to effectively stabilize wind and solar energy. The intermittence and volatility of power generation solves the key problem of its access to the grid. Liquid metal battery is a newly developed high-temperature energy storage technology. Its basic features are: the positive and negative electrodes of the battery are made of cheap metal materials, and the el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38H01M10/38H01M10/39
CPCH01M4/38H01M10/38H01M10/39Y02E60/10Y02P70/50
Inventor 蒋凯李浩秒王康丽程时杰郭晓临
Owner HUAZHONG UNIV OF SCI & TECH
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