INDUSTRIES & APPLICATIONS

Batteries Industry – Moisture

The Role of Moisture Analysis in the Batteries Industry

Moisture Content and Its Impact on Battery Performance, Longevity, and Safety: Moisture control is one of the most critical factors in battery manufacturing, particularly for lithium-ion and other advanced battery chemistries. Even trace amounts of moisture can lead to significant issues, including reduced capacity, shortened battery life, and safety risks such as thermal runaway. AMETEK Brookfield’s Computrac analyzers provide precise control over moisture levels in battery materials, ensuring that batteries are manufactured in conditions that minimize the risk of contamination and degradation.

Moisture Control in Lithium-Ion Batteries: Lithium-ion batteries are highly sensitive to moisture because water can react with lithium-based materials to form hydrogen and other undesirable byproducts, which can degrade the battery's components. Excess moisture can also lead to the formation of lithium hydroxide and lithium carbonate, which can reduce the battery’s capacity and performance over time. AMETEK Brookfield’s Computrac analyzers help battery manufacturers monitor humidity levels in the production environment and ensure that materials such as electrolytes, separators, and electrodes are free from excess moisture.

Preventing Gas Formation and Swelling: Moisture contamination in lithium-ion batteries can cause gas formation within the cell, leading to swelling, leakage, or even rupture. This not only reduces the battery's lifespan but also presents significant safety hazards. Brookfield’s Computrac analyzers ensure that the moisture content is kept at safe levels, preventing gas formation and ensuring the structural integrity of the battery.
Thermal Runaway Prevention: Excess moisture in lithium-ion batteries can increase the risk of thermal runaway – a condition in which the battery overheats and catches fire. By using Brookfield’s Computrac analyzers to maintain strict control over moisture levels during manufacturing, battery producers can minimize the risk of thermal runaway, ensuring the safety and reliability of their products.

Moisture Control in Solid-State Batteries: Solid-state batteries, which use solid electrolytes instead of liquid ones, are also sensitive to moisture. Excess moisture can degrade the solid electrolyte and reduce its ionic conductivity, impacting the overall performance of the battery. Brookfield’s Compputrac analyzers are critical in ensuring that solid-state battery materials are properly dried and maintained under low-humidity conditions to prevent moisture-related issues.

Improving Energy Density and Cycle Life: By ensuring that solid electrolytes and other materials are free from excess moisture, Brookfield’s Computrac analyzers help manufacturers produce solid-state batteries with higher energy density, improved cycle life, and enhanced safety.

Moisture in Battery Slurries and Pastes: The moisture content in electrode slurries and pastes must be carefully controlled to ensure uniform coating and optimal performance. Too much moisture can lead to poor adhesion of the active material to the current collector, while too little moisture can make the slurry difficult to process. Brookfield’s Computrac analyzers provide real-time data on moisture content, allowing manufacturers to optimize drying processes and ensure consistent electrode quality.

Drying Efficiency: During the production of battery electrodes, drying is a crucial step. Computrac analyzers help manufacturers control the drying process, ensuring that excess moisture is removed without over drying the materials, which can affect their structural integrity and electrochemical properties.

Regulatory Compliance and Quality Control

Ensuring Compliance with Industry Standards: Moisture control is essential for ensuring that batteries meet regulatory standards for performance, safety, and durability. Regulatory bodies such as the International Electrotechnical Commission (IEC) and national safety agencies set strict guidelines for the manufacture of lithium-ion batteries and other advanced battery technologies. AMETEK Brookfield’s Computrac analyzers help manufacturers ensure that their products comply with these standards by providing accurate moisture content data that is critical for quality control and safety testing.

ISO and IEC Standards: Brookfield’s Computrac analyzers enable manufacturers to meet ISO and IEC standards for battery performance and safety, ensuring that batteries are free from moisture-related defects and can safely withstand the conditions required for energy storage, electric vehicles, and consumer electronics.
Automotive and Electric Vehicle Compliance: For electric vehicle (EV) batteries, moisture content is a critical factor in ensuring long-term reliability and safety. Brookfield’s instruments help battery manufacturers comply with stringent automotive industry standards by controlling moisture levels, reducing the risk of defects, and enhancing battery performance and safety.

Process Optimization and Safety Through Moisture Analysis

Improving Manufacturing Efficiency and Reducing Defects: By providing real-time moisture data, AMETEK Brookfield’s Computrac analyzers help battery manufacturers optimize their production processes, reducing the likelihood of defects caused by moisture contamination. This leads to improved product quality, fewer rejected batches, and enhanced production efficiency.

Reducing Production Downtime: By preventing moisture-related issues during production, Brookfield’s Computrac analyzers minimize the need for rework and reduce the risk of downtime due to equipment malfunctions or material failures caused by excess moisture.

Enhancing Battery Safety and Reliability: Moisture control is directly linked to battery safety, particularly in lithium-ion and other advanced battery chemistries. By ensuring that moisture levels are tightly controlled throughout the manufacturing process, Brookfield’s Computrac analyzers help battery producers minimize safety risks, improve product reliability, and enhance the overall performance of their batteries.