The provided text mentions that batteries are classified into primary and secondary types. While the question asks for two types of secondary cells, the references offer various examples of secondary cells rather than a fundamental two-part classification of secondary cells. Therefore, we will list several common types of secondary cells instead of trying to force a two-part categorization that isn't explicitly stated.
Common Types of Secondary Cells (Rechargeable Batteries)
Secondary cells, also known as rechargeable batteries, are categorized by their chemical composition and construction. Here are some prominent examples:
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Lead-Acid Batteries: These are the oldest rechargeable battery technology, known for their relatively low cost and high energy density. Commonly used in automobiles and backup power systems.
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Nickel-Cadmium (NiCd) Batteries: These offer good performance, but contain toxic cadmium, leading to environmental concerns. They are less prevalent due to the rise of newer technologies.
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Nickel-Metal Hydride (NiMH) Batteries: An improvement over NiCd batteries, NiMH batteries offer higher energy density and are environmentally friendlier. Frequently used in portable electronic devices.
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Lithium-ion Batteries: Currently the most dominant type of rechargeable battery, Lithium-ion batteries provide high energy density, relatively long lifespans, and are widely used in portable electronics, electric vehicles, and energy storage systems. Examples within this category include Lithium Polymer batteries, which use a polymer electrolyte instead of a liquid electrolyte.
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Other examples include: Lithium air, aluminum-air, germanium air, calcium air, iron air, and potassium-ion batteries (as mentioned in the BatteryIndustry.net snippet).
The references highlight a variety of secondary cell types, emphasizing their differences in chemistry and applications. A simple "two-type" division is not supported by the provided material.
