High temperature electrode slurry: an important material for future energy storage

High temperature electrode slurryIt is an important material for preparing high-performance electrodes. Due to its excellent conductivity and thermal stability, it is widely used in fields such as lithium-ion batteries, supercapacitors, and solid oxide fuel cells.
This article will introduce the preparation technology of high-temperature electrode slurry and its applications in different fields.

1、 Preparation technology of high-temperature electrode slurry

The preparation technology of high-temperature electrode slurry mainly includes three aspects: slurry formulation design, raw material selection, and slurry preparation process control.

1. Slurry formula design

The formulation design of high-temperature electrode slurry is a core step in the preparation process. Usually, the optimal formula needs to be determined through experiments and simulation calculations based on the requirements of different electrodes and the characteristics of raw materials. The following factors need to be considered in the formula design process:

(1) Types and contents of electrode active materials;

(2) Types and amounts of conductive agents and binders added;

(3) Types and amounts of solvents added;

(4) Types and amounts of additives.

2. Raw material selection

High temperature electrode slurryThe raw materials also have a significant impact on its performance. The commonly used raw materials include electrode active materials, conductive agents, binders, solvents, and additives.

(1) Electrode active material

The commonly used electrode active materials currently include lithium oxide, lithium intercalation compounds, carbon materials, etc. Among them, lithium intercalation compounds have the advantages of high specific capacity and long cycle life, making them an ideal electrode active material.

(2) Conductive agent

Conductive agents mainly enhance the conductivity of electrodes and improve the mechanical properties of electrode materials. The commonly used conductive agents currently include graphite, carbon black, and carbon fiber.

(3) Adhesive

Adhesive can tightly bond the electrode active material with the conductive agent, and improve the mechanical and dimensional stability of the electrode. Common adhesives include polyacrylic acid, polyvinyl alcohol, etc.

(4) Solvent

The solvent is mainly used to adjust the viscosity and flowability of the slurry. Common solvents include N-methylpyrrolidone, dimethyl sulfoxide, etc.

(5) Auxiliary agent

Additives can improve the dispersibility and flowability of electrode active materials, and enhance the mechanical and dimensional stability of electrodes. Common additives include surfactants, expansion agents, etc.

3. Process control of slurry preparation

The preparation process of high-temperature electrode slurry requires strict control of various parameters, including the selection of raw materials, slurry mixing, uniform mixing, defoaming, and filter cake. Among them, the preparation and uniform mixing of the slurry are the key steps to ensure the quality of the electrode slurry.

2、 Application of High Temperature Electrode Slurry in Different Fields

1. Lithium ion battery field

High temperature electrode slurry is widely used in the positive and negative electrode materials of lithium-ion batteries. In lithium-ion batteries, the positive electrode material usually uses oxides such as lithium cobalt oxide and ternary materials, while the negative electrode material uses carbon materials or lithium intercalation compounds. High temperature electrode slurry, as one of the core materials of lithium-ion batteries, can improve the energy density and cycle life of the battery.

2. Supercapacitors field

Supercapacitors are a new type of electrochemical energy storage device that features high power, long lifespan, and high efficiency.High temperature electrode slurryIt also plays an important role in supercapacitors. In general, electrode materials for supercapacitors are made of activated carbon, metal oxides, or carbon nanotubes, while high-temperature electrode slurries are used to fix electrode materials and improve their conductivity.

3. Solid state oxide fuel cell field

Solid oxide fuel cells are a new type of high-efficiency, environmentally friendly, and reliable power generation technology. In this type of battery, hydrogen or other gases react with oxygen to produce current and products such as water vapor. High temperature electrode slurry is also widely used in solid oxide fuel cells, mainly for preparing anode and cathode materials and improving the conductivity and stability of electrodes.

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