Solid-State Battery Electrode Design for High Conductivity
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Summary
Problems
Current solid-state batteries face challenges in achieving high electrically conductive properties and suitable thickness due to limitations in electrode materials and manufacturing processes, which affect their performance and suitability for mass production.
Innovation solutions
The electrode for solid-state batteries incorporates active material particles coupled with a resin containing polyimide, polyamide, or polyamideimide, which is carbonized in part to form an electrically conductive network, along with an inorganic solid-state electrolyte including lithium salts like Li2CO3, Li2SO4, or Li3BO3, to enhance conductivity and elasticity.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a solid-state battery uses conventional electrode materials and manufacturing processes, then the battery structure is simple and manufacturing is easier, but the electrically conductive properties are insufficient and the battery cannot achieve high capacity and output
Why choose this principle:
The electrode uses a composite structure consisting of active material particles, a carbonized resin binder (polyimide, polyamide, or polyamideimide), and inorganic solid-state electrolyte particles. This composite material system provides both high electrical conductivity through the carbonized resin network and mechanical integrity through the binder, resolving the contradiction between conductivity and structural complexity
Principle concept:
If a solid-state battery uses conventional electrode materials and manufacturing processes, then the battery structure is simple and manufacturing is easier, but the electrically conductive properties are insufficient and the battery cannot achieve high capacity and output
Why choose this principle:
The resin binder is carbonized by heating to a specific temperature range (500-800°C) to transform it from an insulating state to a conductive state. This parameter change (thermal treatment) enables the resin to form an electrically conductive network while maintaining its binding function, thus improving conductivity without excessive structural complexity
Application Domain
Data Source
AI summary:
The electrode for solid-state batteries incorporates active material particles coupled with a resin containing polyimide, polyamide, or polyamideimide, which is carbonized in part to form an electrically conductive network, along with an inorganic solid-state electrolyte including lithium salts like Li2CO3, Li2SO4, or Li3BO3, to enhance conductivity and elasticity.
Abstract
An electrode for a solid-state battery is provided and includes active material particles, a resin, and an inorganic solid-state electrolyte. The resin includes at least one selected from the group consisting of polyimide, polyamide, and polyamideimide and includes a carbide in part. The inorganic solid-state electrolyte includes a lithium salt that includes at least one element selected from the group consisting of boron (B), carbon (C), sulfur (S), and chlorine (Cl).