Nonaqueous Electrolyte Amide Compounds for Metal Ion Capture
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Solution Overview
Problem
The dissolution and deposition of metal foreign matter in nonaqueous electrolyte batteries lead to deterioration of battery properties, such as voltage, which existing technologies have not adequately addressed.
Innovation Solution
Incorporating an amide compound with an amide bond and an electron-withdrawing group containing oxygen and/or nitrogen into the nonaqueous electrolyte, which captures metal ions to suppress their deposition and subsequent dendrite formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrolyte solutions are used, then battery operation is maintained, but metal foreign matter dissolves and deposits on the negative electrode causing property deterioration
Solution Approach 1:
The patent introduces an amide compound as an intermediary substance in the electrolyte solution. This compound mediates between the metal foreign matter and the electrode by capturing metal ions through coordination chemistry, preventing their deposition on the negative electrode. The amide compound acts as a sacrificial agent that binds to metal ions, thereby protecting the battery system from metal-induced degradation.
Solution Approach 2:
The patent converts the harmful effect of metal foreign matter into a beneficial outcome by allowing controlled interaction between metal ions and the amide compound. Instead of preventing metal dissolution entirely, the system allows metal ions to be captured and stabilized in a harmless form through coordination with the amide compound, transforming the harmful dissolution process into a beneficial ion-capture mechanism that prevents dendrite formation.
2Ease of manufacture
If metal foreign matter is present in the positive electrode, then battery assembly is simplified, but voltage and other properties deteriorate due to metal deposition on the negative electrode
Solution Approach 1:
The amide compound serves as a chemical intermediary that remains in the electrolyte solution to continuously capture metal ions released from the positive electrode. This intermediary mechanism allows the battery to tolerate the presence of metal foreign matter during assembly while maintaining voltage stability through ongoing ion capture, thus resolving the contradiction between manufacturing simplicity and operational reliability.
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 amide compound effectively reduces the deterioration of battery properties by inhibiting the deposition of metal foreign matter, thereby maintaining battery performance.
Implementation Method 1
the amide compound contains an amide bond and an electron-withdrawing group R... the amide compound is a chain compound... captures metal ions to suppress their deposition
Data Source
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AI summary
A disclosed nonaqueous electrolyte is a nonaqueous electrolyte for a nonaqueous electrolyte battery. The nonaqueous electrolyte contains a nonaqueous solvent, an electrolyte salt, and an amide compound containing an amide bond and an electron-withdrawing group R. The amide compound is a chain compound. The electron-withdrawing group R contains oxygen and/or nitrogen.