Dry Electrode Film Recycling Using Powder Flow Screening
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Solution Overview
Problem
Conventional dry electrode film recycling methods fail to produce recycled materials of the same quality as those made from fresh raw materials due to inadequate processing of waste electrodes, leading to inconsistent product quality and increased raw material costs.
Innovation Solution
A method involving the crushing of waste electrodes, selection based on a preset powder flow index, and integration into a new electrode material with calendering or pressing to form a sheet, followed by slitting to produce a recycled dry electrode film, utilizing equipment like roll mills and attrition mills, ensuring the recycled material meets the necessary physical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If waste electrodes are directly introduced to the existing system without separate treatment, then the recycling process is simple, but the recycled materials do not mix well with new raw materials and product quality is inconsistent
Solution Approach 1:
The recycling process is segmented into distinct stages: crushing waste electrodes into fine powder, screening to remove impurities, and separately treating recycled materials before mixing with new raw materials. This segmentation ensures each step optimizes material properties, achieving both process feasibility and product quality consistency.
Solution Approach 2:
Waste electrodes undergo preliminary crushing and treatment before being introduced to the mixing system. This preliminary action transforms waste materials into a form that mixes uniformly with new raw materials, ensuring consistent product quality without complicating the overall recycling process.
2Manufacturing precision
If waste electrodes are crushed and treated with separate processing steps, then product quality matches fresh materials, but the manufacturing process becomes more complex
Solution Approach 1:
The crushing process controls particle size parameters of waste electrode powder to match the size distribution of new raw materials. By adjusting crushing duration and intensity parameters, the system achieves uniform mixing and consistent product quality using standard equipment without adding complex processing steps.
3Productivity
If waste electrodes are not properly processed, then the recycling process is fast and simple, but the recycled electrode films have inferior quality compared to fresh materials
Solution Approach 1:
The system replaces complex chemical treatment mechanisms with mechanical crushing and physical screening processes. This substitution maintains fast processing speeds while achieving the necessary material uniformity for high-quality electrode films, avoiding time-consuming chemical treatment steps.
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 effectively recycles waste electrodes to produce dry electrode films of the same quality as those made from fresh materials, reducing raw material costs and improving environmental sustainability by reusing discarded materials.
Implementation Method 1
obtaining waste materials to be recycled by crushing waste electrodes
Implementation Method 2
calendering or pressing a new material to form a sheet
Data Source
AI summary
Provided is a method for recycling a dry electrode film. More specifically, provided is a method for recycling a dry electrode film that can produce a dry electrode film of the same quality as a dry electrode film using a new raw material using recycled waste material by introducing a separate treatment step for the waste electrode generated during the production of the dry electrode film. The method for recycling a dry electrode film includes: obtaining waste materials to be recycled by crushing a waste electrode; collecting recycled materials that satisfy a preset powder flow index among the recycled waste materials above; and preparing an electrode material including the recycled material and manufacturing an electrode film using the electrode material.