All-Solid-State Battery Lubricant Additives for Low-Pressure Roll Pressing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing all-solid-state batteries face challenges in formability and elongation of electrode plates, which affect their manufacturing process and performance.
Innovation Solution
Incorporation of a lubricant additive, such as compounds with specific repeating units represented by Chemical Formulas 1 and 2, into the positive and/or solid electrolyte layers to enhance formability and elongation, allowing for low-pressure roll-pressing fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional electrode plate manufacturing is used, then manufacturing process is simple, but formability and elongation are poor
Solution Approach 1:
The patent introduces a lubricant additive as an intermediary substance between electrode plate layers during manufacturing. This additive improves formability and elongation by reducing friction and enabling better layer alignment, while maintaining a relatively simple manufacturing process through low-pressure roll-pressing.
Solution Approach 2:
The patent modifies the physical and chemical parameters of the electrode plate by incorporating specific lubricant additives with defined molecular weights (200-2000 g/mol) and friction coefficients (0.01-0.1). These parameter changes enable improved formability without significantly complicating the manufacturing process.
2Manufacturing precision
If high pressure is used for roll-pressing, then electrode layers are well compacted, but manufacturing cost and energy consumption increase
Solution Approach 1:
The lubricant additive acts as a mediator that reduces the friction between electrode layers, allowing for effective compaction at lower pressures. This intermediary substance enables good layer consolidation while significantly reducing the energy required for the roll-pressing process.
Solution Approach 2:
By changing the friction coefficient parameter through lubricant additive incorporation (achieving coefficients of 0.01-0.1), the patent enables effective electrode layer compaction at reduced pressures, thereby lowering energy consumption during manufacturing.
3Ease of operation
If lubricant additive is added, then fluidity and adhesion improve, but material composition complexity increases
Solution Approach 1:
The patent improves fluidity by incorporating lubricant additives with specific molecular weight ranges (200-2000 g/mol) and controlled friction coefficients (0.01-0.1). While this does increase material composition complexity, the use of well-defined parameter ranges keeps the complexity manageable and the benefits significant.
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 lubricant additive improves the fluidity and adhesion of electrode layers, enabling efficient low-pressure manufacturing and enhancing the structural integrity and performance of all-solid-state batteries.
Implementation Method 1
Incorporation of a lubricant additive, such as compounds with specific repeating units represented by Chemical Formulas 1 and 2, into the positive and/or solid electrolyte layers to enhance formability and elongation, allowing for low-pressure roll-pressing fabrication
Implementation Method 2
The lubricant additive improves the fluidity and adhesion of electrode layers, enabling efficient low-pressure manufacturing
Data Source
AI summary
Disclosed are all-solid-state batteries and fabrication methods thereof. The all-solid-state battery includes a positive electrode layer, a negative electrode layer, and a solid electrolyte layer between the positive electrode layer and the negative electrode layer. At least one of the positive electrode layer and the solid electrolyte layer includes a lubricant additive. The lubricant additive includes one of a first compound that includes a repeating unit, a second compound that includes a repeating unit, and a combination of the first compound and the second compound.