Semi-liquid metal electrode energy storage battery

Abstract

The invention relates to a semi-liquid metal electrode energy storage battery, belonging to the field of an energy storage battery, and aiming at solving the problems that the all-liquid metal battery is narrow in battery material selection range and high in running temperature, and has potential safety problem. The semi-liquid metal electrode energy storage battery comprises a shell, a positive pole, electrolyte, a negative pole and a collector, wherein the positive pole is alloy made from one or more of Sn, Sb, Pb, Bi and Te; the negative pole is alloy made from one or more of Li, Na, Mg and Ca; and the electrolyte is a mixture of inorganic salt mixture and ceramic powder. When the semi-liquid metal electrode energy storage battery runs, the positive pole is in a semi-liquid state structure with alloy solid phase distributed in liquid phase, and the electrolyte is melted into semi-liquid state paste, so that the short circuit of the positive pole and the negative pole can be effectively prevented, the energy storage cost is lowered, the working temperature of the battery is reduced, the corrosion speed of the shell is slowed down, the service life of the battery is prolonged, the safety and the reliability of running can be improved, and the semi-liquid metal electrode energy storage battery is suitable for storing energy for new energy power generation grid-connection, frequency modulation and peak-load regulation of an electrical power system as well as smart power grid construction.

Description

technical field [0001] The invention belongs to the field of energy storage batteries, in particular to a semi-liquid metal electrode energy storage battery. Background technique [0002] In recent years, the importance of energy storage technology has become increasingly prominent, whether it is the grid connection of renewable energy such as wind energy and solar energy, or the frequency regulation and peak regulation of the power system, as well as the development of smart grids. At the same time, the research and development of large-scale energy storage technology at home and abroad has gradually set off an upsurge. Existing energy storage technologies mainly include mechanical energy storage, direct electrical energy storage, chemical energy storage and electrochemical energy storage, among which electrochemical energy storage devices such as secondary batteries or flow batteries have high energy density, fast response time, and are flexible and convenient. It is the ...

AI Technical Summary

Problems solved by technology

This design reduces the utilization rate of electrode materials and increases the cost of energy storage. Excessively high operating temperature (>700°C) will also accelerate the high-temperature corrosion rate of the battery case, reduce the battery life, and bring a lot to the safety of the battery. Uncertainties

At the same time, this all-liquid battery structure also strictly limits its use as a static energy storage application.

Images