Composite Anode Material With Halide Solid Electrolyte for Li-Ion Efficiency
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Solution Overview
Problem
Current battery technologies face inefficiencies in charge and discharge processes, particularly in the storage and release of lithium ions, which affect the overall energy density and operational output of batteries.
Innovation Solution
An anode material comprising anode active particles, such as indium metal, lithium alloys, or lithium titanate, combined with a first solid electrolyte material represented by the composition formula Li α M β X γ, where M includes yttrium and X is Cl, Br, or I, enhancing ionic conductivity and allowing lithium ion storage and release at potentials greater than 0.27 V, thereby improving charge/discharge efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional anode materials are used, then battery structure is simple, but charge/discharge efficiency is low
Solution Approach 1:
The patent applies composite materials by combining anode active material particles with solid electrolyte particles to form a composite anode material. This composite structure enables high charge/discharge efficiency by facilitating rapid lithium ion transport through the solid electrolyte while maintaining structural simplicity at the device level.
2Productivity
If solid electrolyte particles are added to anode active material particles, then charge/discharge efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for the volume ratio of solid electrolyte particles to anode active material particles (0.05 to 0.70). By controlling this volumetric parameter within defined boundaries, the invention achieves optimal charge/discharge efficiency while providing clear manufacturing guidelines that balance precision requirements with practical fabrication.
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 proposed solution significantly enhances the charge/discharge efficiency of batteries by optimizing the anode material and solid electrolyte composition, leading to improved energy density and operational performance.
Implementation Method 1
the first solid electrolyte particles include Li, M, and X... a material represented by the following composition formula (1): LiαMβXγ... enhancing ionic conductivity
Implementation Method 2
the anode active material particles are an active material capable of storing and releasing lithium ions at a potential with respect to lithium of not less than 0.27 V
Data Source
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AI summary
The present disclosure provides an anode material having further improved charge / discharge efficiency. The anode material according to the present disclosure includes an anode active material and a first solid electrolyte material. The first solid electrolyte material includes Li, M, and X, and does not include sulfur. M is at least one selected from the group consisting of metalloid elements and metal elements other than Li. X is at least one kind selected from the group consisting of CI, Br, and I. The anode active material is an active material capable of storing and releasing lithium ions at a potential with respect to lithium of not less than 0.27 V.