Alkaline Battery Electrolyte Additive for Medium-Load Discharge
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Solution Overview
Problem
Alkaline dry cells with surfactants added to the anode experience a decrease in discharge performance when subjected to a medium load.
Innovation Solution
A battery design incorporating a cathode with manganese dioxide and graphite, an anode with zinc, and an electrolyte containing polyethyleneimine ethoxylate, which is either added to the anode or the electrolyte, to enhance discharge performance under medium load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a surfactant is added to an anode, then hydrogen gas generation is suppressed and leakage is prevented, but discharge performance with medium load decreases
Solution Approach 1:
The patent changes the chemical parameters of the electrolyte by adding polyethyleneimine ethoxylate, which modifies the surface properties and reaction characteristics at the anode. This parameter change allows the system to maintain both leakage prevention and improved discharge performance with medium load, resolving the contradiction between reliability and productivity.
Solution Approach 2:
The patent uses a composite approach by combining polyethyleneimine ethoxylate with the existing electrolyte components. This composite material system provides both the hydrogen gas suppression function and enhanced medium load discharge performance, simultaneously addressing both requirements without compromise.
2Object-generated harmful factors
If a surfactant is added to an anode, then hydrogen gas generation is suppressed, but discharge performance with medium load decreases
Solution Approach 1:
The patent modifies the chemical environment by introducing polyethyleneimine ethoxylate into the electrolyte, which changes the surface tension and reaction kinetics parameters. This parameter modification suppresses hydrogen gas generation while simultaneously improving discharge performance with medium load, eliminating the harmful effect without sacrificing productivity.
Solution Approach 2:
The polyethyleneimine ethoxylate acts as an intermediary substance that mediates between the anode and electrolyte. It provides a functional layer that prevents hydrogen gas generation while facilitating better ionic conductivity and charge transfer, thereby improving discharge performance without compromising safety.
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 battery exhibits improved discharge performance with a medium load, as demonstrated by extended continuous discharge times compared to batteries without polyethyleneimine ethoxylate, while maintaining appropriate resistance to shock and vibration.
Implementation Method 1
the polyethyleneimine ethoxylate that is contained in the anode and in the electrolyte
Data Source
AI summary
A battery includes a cathode that is containing manganese dioxide and graphite, an anode that is containing zinc, an electrolyte in which the cathode and the anode are immersed, and a polyethyleneimine ethoxylate that is contained in the anode or in the electrolyte.