Electrode Intermediate Coating for Uniform Alloy Battery Pellets
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Solution Overview
Problem
Existing secondary batteries face challenges in enhancing charge/discharge efficiency, stability, and lifespan, particularly in all-solid-state batteries, which are critical for the growing electric vehicle market.
Innovation Solution
A method is developed to produce an intermediate product of an electrode by forming a coating layer with a first metal on a base particle, melting a second metal with the base particle to create a molten source, and using this to form an electrode film or pellet, with specific control of lithium compounds and silicon oxide structures to enhance uniform alloy composition and simplify production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a coating layer including a first metal is formed on a base particle and a second metal is melted with the base particle to create a molten source, then uniform alloy composition is achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies preliminary action by forming the coating layer including the first metal on the base particle surface before the melting step. This pre-coating ensures that when the second metal is melted and mixed with the base particle, the first metal is already positioned to facilitate uniform alloy composition formation, thereby achieving precision before the complex melting process begins.
Solution Approach 2:
The patent uses composite materials by creating a structure where a coating layer (first metal) is formed on a base particle, which is then combined with a second metal through melting. This composite approach ensures uniform alloy composition by controlling the distribution of different metals during the melting process, achieving manufacturing precision through material composition design.
2Reliability
If lithium compounds and silicon oxide structures are specifically controlled to enhance uniform alloy composition, then charge/discharge properties are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by specifically controlling the composition parameters of lithium compounds and silicon oxide structures in the alloy. By adjusting these chemical composition parameters, the patent achieves improved charge/discharge properties while maintaining manageable manufacturing precision through defined compositional ranges and ratios.
3Productivity
If the production process is simplified to enable mass production, then productivity increases, but manufacturing precision may be compromised
Solution Approach 1:
The patent applies segmentation by dividing the production process into distinct stages: forming the coating layer on base particles, melting the second metal with the coated base particles, and creating the final alloy. This segmentation allows each stage to be optimized independently, enabling mass production while maintaining alloy composition uniformity through controlled processing steps.
Solution Approach 2:
The patent uses preliminary action by pre-forming the coating layer on base particles before the melting step. This preliminary preparation allows for standardized, scalable coating processes that can be easily implemented in mass production while ensuring that the subsequent melting step produces uniform alloy composition without requiring excessively complex precision control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method enhances charge/discharge properties, stability, and lifespan of secondary batteries by ensuring a uniform alloy composition and simplifying the production process, reducing costs and enabling mass production.
Implementation Method 1
forming a coating layer, containing a first metal, on the surface of the base particle by mixing the base particle with a coating source which contains the first metal
Implementation Method 2
producing a molten source, in which a second metal and the base particle on which the coating layer is formed are melted by heat-treating the second metal and the base particle on which the coating layer is formed
Data Source
AI summary
Provided is a method for producing an intermediate product of an electrode. The method for producing an intermediate product of an electrode may comprise the steps of: preparing a base particle; forming a coating layer, comprising a first metal, on the surface of the base particle by mixing the base particle with a coating source which comprises the first metal; and forming a molten source, in which is melted a second metal and the base particle on which the coating layer is formed, by heat-treating the second metal and the base particle on which the coating layer is formed.