Composite Electrode Material Alternating Layered Structure
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Solution Overview
Problem
Existing electrode materials for energy storage devices suffer from poor contact between components, leading to decreased electrochemical properties and rapid decline in specific capacitance during high-speed charging/discharging due to time-consuming manufacturing methods that do not allow for sufficient mixing.
Innovation Solution
A composite electrode material is formed using an electro-deposition method with alternating voltage, where conductive and active material layers are stacked alternately and disorderly, improving bonding and mixing, allowing for high specific capacitance maintenance at high current densities and reducing charging time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional slurry coating or chemical vapour deposition methods are used to manufacture electrode material, then the manufacturing process can be completed, but the components cannot be sufficiently mixed and contact between components is poor, leading to decreased electrochemical properties
Solution Approach 1:
The electrode material is segmented into multiple thin layers (first conductive material layer, first active material layer, second conductive material layer, second active material layer) stacked alternately. This segmentation allows each layer to be properly formed and bonded, ensuring sufficient contact between components while maintaining manufacturing feasibility, thereby resolving the contradiction between mixing uniformity and electrochemical properties.
Solution Approach 2:
The patent creates a composite electrode material structure combining different materials (conductive materials and active materials) in an alternating layered configuration. This composite structure ensures both sufficient mixing/contact between different material components and maintains good electrochemical properties, resolving the technical contradiction.
2Productivity
If traditional manufacturing methods are used, then the process can be completed, but the manufacturing time is excessive and the process is time-consuming
Solution Approach 1:
The patent merges multiple manufacturing steps into a single integrated process where the alternating layered structure is formed in one continuous operation. This combining of steps eliminates intermediate processing time while achieving the desired layered structure, thereby improving manufacturing efficiency and reducing total manufacturing time.
Solution Approach 2:
The alternating layered structure is designed and prepared in advance as a unified manufacturing approach. By preliminarily establishing the layered configuration method, the actual manufacturing process becomes more efficient as it follows a predetermined optimized structure, reducing on-site manufacturing time and improving productivity.
3Reliability
If components are not sufficiently mixed, then manufacturing is simpler, but contact between components is poor causing rapid decline in specific capacitance at high-speed charging/discharging
Solution Approach 1:
The patent transitions from a simple mixed structure to a three-dimensional alternating layered structure. This dimensional change allows components to be arranged in an ordered yet well-contacted configuration, improving specific capacitance stability during high-speed charging/discharging while managing structural complexity through systematic layering rather than random mixing.
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 composite electrode material maintains high specific capacitance at high current densities, significantly reducing charging time and simplifying the manufacturing process, thus enhancing energy storage device performance and cost-effectiveness.
Implementation Method 1
a stacked composite electrode material can be formed merely with a one-step method... by applying an alternating voltage to an electro-deposition device
Data Source
AI summary
Provided is a composite electrode material. The composite electrode material is disposed on a surface of an electrode. The composite electrode material includes a plurality of conductive material layers and a plurality of active material layers. The conductive material layers and the active material layers are alternately stacked along a direction non-parallel to the surface of the electrode, and are arranged disorderly along a direction parallel to the surface of the electrode.