Fatty Acid Dispersant for Solid-State Lithium-Ion Battery Electrode Coating
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Solution Overview
Problem
The existing solid-state method for coating lithium-ion battery electrode materials lacks uniformity, leading to reduced safety performance and cycle life, and is not suitable for large-scale industrial production due to its complexity and high cost.
Innovation Solution
C10-C34 fatty acids are used as dispersants to improve the uniformity of the coating process in the solid-state method, allowing for efficient and economical preparation of lithium-ion battery electrode materials with enhanced thermal stability and cycle life by uniformly distributing the coating material on the electrode surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If solid-state method is used for coating electrode materials, then the manufacturing process is simple and economical, but the coating uniformity is poor
Solution Approach 1:
The patent introduces fatty acid as an intermediary substance to mediate between the coating material and electrode material surface. The fatty acid adsorbs onto the electrode material surface first, creating uniform active sites that guide subsequent coating material deposition, thereby achieving uniform coating distribution without complex liquid-state processing
Solution Approach 2:
The patent applies preliminary action by having the fatty acid undergo adsorption and decomposition reactions before the main coating process. The fatty acid is pre-applied to the electrode material surface, where it decomposes during sintering to leave behind a uniform distribution of coating material, ensuring homogeneous coating before the actual coating deposition occurs
2Reliability
If coating material is applied to improve interface stability, then safety performance and cycle life are improved, but the manufacturing complexity increases
Solution Approach 1:
The patent merges the coating material application process with the existing solid-state sintering process. The fatty acid and coating material are mixed and applied together, then sintered in a single step that simultaneously achieves both the coating deposition and the thermal treatment needed for battery material formation, eliminating separate coating and sintering steps
Solution Approach 2:
The patent utilizes parameter changes by controlling the sintering temperature and atmosphere to facilitate the fatty acid decomposition and coating material deposition. By optimizing the thermal processing parameters, the complex chemical reactions of fatty acid decomposition and coating formation are achieved in a controlled manner that simplifies the overall manufacturing process
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 use of C10-C34 fatty acids as dispersants significantly enhances the uniformity and stability of the coating process, improving the safety and cycle life of lithium-ion battery electrode materials while enabling more economical and simple manufacturing, allowing for personalized production based on initial discharge capacity and cycle life requirements.
Implementation Method 1
C10-C34 fatty acids are used as dispersants to improve the uniformity of the coating process
Implementation Method 2
the compound itself will not have any effect on the materials of lithium-ion battery after decomposing and volatilizing in the process of heating
Implementation Method 3
the compound itself will not have any effect on the materials of lithium-ion battery after decomposing and volatilizing in the process of heating
Data Source
AI summary
The use of a C10~C34 fatty acids compound in the preparation of a the electrode materials for lithium-ion battery improves the coating uniformity of electrode materials prepared with solid-state method. The fatty acid provided by the invention is a dispersant, which achieves the uniformly dispersion of the coating material on the surface of battery material, and significantly increases the coating uniformity of the electrode material coated with solid-state method, it greatly improves the feasibility of manufacturing the electrode material of lithium-ion battery with solid-state method, and is conducive to the more economical and simpler manufacture of electrode material.