Sacrificing Aluminum Alloy Cathode for Battery Performance
Using sacrificial aluminum alloy cathode for batteries can be a beneficial, yet expensive option in many applications. The sacrifices made by the cathode are not insignificant, as it provides a passivated surface that helps provide the electrical properties the battery needs to reach its maximum potential. The sacrificed alloy also serves as a protective layer for the battery, preventing damage from the impacts of temperature and pressure which could potentially destroy the battery.
The aluminum alloy cathode provides a chemical advantage to rechargeable batteries, as it allows for higher energy density while sacrificing less than other cathodes. Aluminum has the chemical characteristics that attract protons during charging and aid in the separation of them during discharging. This makes aluminum a desirable choice for the cathode of a battery, as its chemical properties make it easier to facilitate charge and discharge.
Aluminum alloy cathodes cannot be used in all types of batteries, however. They are not ideal for lithium-ion batteries, as their electro-chemical properties are not suitable for the working voltage. Additionally, they are not suitable for fuel cells, as the required working temperatures and pressures are too great for them.
Despite the cost, many people still choose to use aluminum alloy cathode in their rechargeable batteries to take advantage of the chemical and electrical properties it provides. The chemical properties are already known and easily understood, but the electrical properties are less understood. First of all, aluminum has a work function that is higher than other cathode materials, making it more desirable to transfer electrons in comparison. Secondly, its superior resistance to corrosion provides a better protection layer against oxidation and electrolytic action, allowing for better heat resistivity and less heat loss. Both of these points are beneficial to the battery’s performance, as they allow it to be utilized to its fullest potential.
In conclusion, sacrificing aluminum alloy cathode for the performance of a battery can be a beneficial, yet expensive choice in the correct applications. Its higher work function, superior corrosion resistance and heat resistivity are advantages to its chemical and electrical properties which can be used to benefit the performance of a battery. However, it is important to consider all of the details of the battery and its intended use before sacrificing an expensive metal for an improved level of performance that may not be necessary.
