Lead-Acid Battery Electrolyte Nanoparticles for Sulfation Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Lead-acid batteries suffer from reduced capacity and increased internal resistance due to the buildup of crystalline lead sulfate on electrode plates, leading to premature degradation and the need for frequent replacement.
Innovation Solution
Incorporating nonionic, ground-state metal nanoparticles, such as gold or their alloys, into the electrolyte or electrode paste of lead-acid batteries at concentrations between 100 ppb and 100 ppm to reduce resistance and enhance electron transport, thereby extending the battery's service life and improving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If lead-acid batteries are used to provide large surge currents for powering automobile starter motors, then the battery can effectively power starter motors, but the buildup of crystalline lead sulfate on electrode plates increases internal resistance and reduces battery capacity over time
Solution Approach 1:
The patent applies parameter changes by introducing metal nanoparticles at specific concentrations (100 ppb to 100 ppm) to alter the physical and chemical properties of the electrolyte. This changes the electrical conductivity and interaction characteristics of the battery system, reducing internal resistance and preventing excessive sulfation buildup, thereby extending battery service life while maintaining power delivery capability
Solution Approach 2:
The patent employs composite materials by combining traditional lead-acid battery components with metal nanoparticles (such as gold, silver, or their alloys). This creates a hybrid electrolyte system that integrates the conventional sulfuric acid-based electrolyte with nanoparticle additives, producing a composite electrolyte that reduces internal resistance and improves charge-discharge cycle performance
2Ease of manufacture
If conventional battery materials and concentrations are used, then the battery structure is simple and inexpensive, but higher concentrations of additives are typically required to achieve performance enhancement
Solution Approach 1:
The patent achieves effective performance enhancement at lower nanoparticle concentrations (100 ppb to 100 ppm) by optimizing key parameters such as particle size, surface area-to-volume ratio, and distribution uniformity. This parameter optimization allows the use of smaller amounts of nanoparticle material while maintaining or improving effectiveness, reducing the quantity of substance required compared to conventional approaches
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 addition of these nanoparticles decreases internal resistance, increases fully charged resting voltage, cranking amps, and reserve capacity, allowing for more charge-discharge cycles and extending the battery's usable life, with effective performance achieved at lower concentrations compared to conventional methods.
Implementation Method 1
nonionic, ground state metal nanoparticles... to reduce resistance and enhance electron transport
Data Source
AI summary
This disclosure relates to compositions and methods for improving the performance of batteries, such as lead-acid batteries, including reviving or rejuvenating a partially or totally dead battery, by adding an amount of nonionic, ground state metal nanoparticles to the electrolyte of the battery, and optionally recharging the battery by applying a voltage. The metal nanoparticles may be gold and coral-shaped and are added to provide a concentration within the electrolyte of 100 ppb to 2 ppm or more (e.g., up to 5 ppm, 10 ppm, 25 ppm, 50 ppm, or 100 ppm). The metal nanoparticles may be added to battery electrode paste applied to the electrodes to enhance newly manufactured or remanufactured batteries.