Lead Battery Electrode Ozone Treatment for Oxidation Control
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Solution Overview
Problem
Existing methods for producing battery electrodes, particularly for uninterruptible power supplies, face challenges in achieving optimal structure and chemical composition, leading to suboptimal battery capacity, energy efficiency, and prolonged formation times, with high production costs and risks associated with excessive ozone use.
Innovation Solution
A method involving a reduced ozone gas flow for treating lead-based battery electrodes, including a controlled ozone treatment in a specific atmosphere to accelerate oxidation and enhance crystal morphology, resulting in improved electrode efficiency and reduced production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a high gas flow rate (1.6 cubic feet per square foot per hour) of ozone-enriched gas is used to treat the electrode surface, then the oxidation reaction proceeds rapidly and the formation process is accelerated, but the production cost increases and the risk of excessive ozone exposure rises
Solution Approach 1:
The patent changes the key parameter of ozone gas flow rate from the conventional high value (1.6 cubic feet per square foot per hour) to a reduced value (0.03-0.06 cubic feet per square foot per hour). This parameter change maintains the oxidation reaction effectiveness while significantly reducing ozone consumption and associated costs, directly resolving the contradiction between productivity and substance quantity.
Solution Approach 2:
The patent converts the potentially harmful excessive ozone exposure into a beneficial controlled oxidation process. By reducing the ozone flow rate to optimal levels, the harmful effects of excessive ozone are eliminated while the beneficial oxidation reaction that improves electrode performance is maintained, thus converting a harmful factor into a controlled beneficial process.
2Reliability
If the water quantity in the active paste mix is increased to sustain the exothermic oxidation reaction, then the reaction can proceed to completion, but the curing time becomes excessively lengthy
Solution Approach 1:
The patent optimizes the water content parameter in the active paste mix to achieve the minimum required for sustaining the exothermic oxidation reaction. By precisely controlling water quantity rather than using excessive amounts, the reaction proceeds to completion reliably while minimizing the curing time, thus resolving the contradiction between reliability and time loss.
Solution Approach 2:
The patent applies partial action by using only the necessary amount of water (not excessive) to trigger and sustain the oxidation reaction. This partial sufficiency approach ensures the reaction completes reliably without the time penalty associated with excessive water content, balancing reliability and time efficiency.
3Loss of time
If the rapid drying temperature is increased to accelerate moisture removal and trigger oxidation faster, then the formation process is shortened, but the structure and hardness of the active material may become suboptimal
Solution Approach 1:
The patent optimizes the drying temperature parameter within a specific range (100°C to 200°C) to achieve the fastest possible oxidation reaction rate without compromising the structural quality of the active material. This precise temperature control resolves the contradiction by finding the optimal point where time loss is minimized and manufacturing precision is maintained.
Solution Approach 2:
The patent replaces purely thermal drying with a chemically-driven oxidation process triggered by controlled water content and ozone exposure. This substitution allows the structure formation to occur through chemical transformation rather than just thermal evaporation, maintaining structural integrity while accelerating the overall process.
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 method achieves increased battery capacity, reduced energy consumption, and accelerated formation times with improved electrode properties, demonstrating superior performance in discharge tests and prolonged capacity retention.
Implementation Method 1
a controlled ozone treatment in a specific atmosphere to accelerate oxidation and enhance crystal morphology
Implementation Method 2
This rapid drying process also triggers an exothermic reaction with formation of lead oxide and lead hydroxide, in addition to other compounds, which heats the plate
Data Source
AI summary
A method for producing at least one lead battery electrode, comprising the step of disposing an active paste on a support in such a manner as to form said electrode, and locating said electrode in a controlled atmosphere environment to expose said electrode to a gas enriched in ozone, characterised in that said electrode is exposed to an ozone-enriched gas of flow rate less than 100 litres per hour for each square metre of surface of said electrode.