A positive electrode material for a liquid or semi-liquid metal battery, its preparation method and application

A cathode material, metal battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as low energy efficiency and low operating voltage, and achieve the effects of high capacity, increased battery voltage, and long cycle life

Active Publication Date: 2021-06-01
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The invention provides a positive electrode material of a liquid or semi-liquid metal battery and a preparation method thereof. After being applied to an energy storage battery, it solves the problem of low working voltage and low energy consumption caused by the large polarization of the existing liquid or semi-liquid metal battery at a high current density. Low efficiency and other issues

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  • A positive electrode material for a liquid or semi-liquid metal battery, its preparation method and application
  • A positive electrode material for a liquid or semi-liquid metal battery, its preparation method and application
  • A positive electrode material for a liquid or semi-liquid metal battery, its preparation method and application

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[0021] In order to make the technical problems, technical solutions and advantages described in the present invention clearer, the present invention will be further described 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 may be combined with each other as long as they do not constitute a conflict with each other.

[0022] The present invention aims at the problems of large polarization, low discharge voltage and low energy efficiency of existing liquid or semi-liquid metal batteries under high current density, and provides a positive electrode material for liquid or semi-liquid metal batteries. The positive electrode material is Metal Ga or a Ga alloy formed by metal Ga and one or more of meta...

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Abstract

The invention discloses a positive electrode material of a liquid or semi-liquid metal battery, a preparation method and application thereof, and belongs to the field of electrode materials of energy storage batteries. The present invention adopts metal Ga or Ga alloy formed by one or more elements of Sb, Bi, Sn, Pb as the positive electrode material, which can be combined with existing negative electrode materials (Li, Na, K, Ca, Mg) It is alloyed and has good electrochemical properties. The melting point of metal Ga is extremely low (29.8 ℃), and the preparation process of Ga alloy is simple. Using Ga or Ga alloy for liquid or semi-liquid metal batteries can maintain the advantages of high capacity and long life of liquid or semi-liquid metal batteries. It can reduce the working temperature of the battery, reduce the polarization of the battery, increase or stabilize the discharge voltage of the battery, and improve the charge and discharge performance of the battery under high current density.

Description

technical field [0001] The invention belongs to an electrode material for an energy storage battery, in particular to a positive electrode material for a liquid or semi-liquid metal battery and a preparation method thereof, which can be used to solve the problem of low working voltage and energy efficiency of a liquid or semi-liquid metal battery under high current density low problem. Background technique [0002] The rapid development and utilization of renewable energy technologies such as wind energy and solar energy have effectively alleviated the environmental degradation caused by fossil fuel combustion, but renewable energy still has problems such as time and space intermittency and low efficiency of integration into the grid. Large-scale high-efficiency energy storage technology will significantly improve the grid-connected efficiency and reliability of intermittent renewable energy, and ensure the stability, reliability and security of the grid. Among various ener...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/38H01M10/39C22C1/08C22C11/00C22C12/00C22C13/00C22C28/00
CPCC22C1/08C22C11/00C22C12/00C22C13/00C22C28/00H01M4/38H01M10/399Y02E60/10
Inventor 赵海雷谢宏亮王捷褚鹏韩崇祺
Owner UNIV OF SCI & TECH BEIJING
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