The acronym NICD stands for National Institute for Communicable Diseases. Its pronunciation is [ˈnæʃənəl] [ˈɪnstɪtjut] [fər] [kəˈmjuːnɪkəbl] [ˈdɪziːzɪz]. The word "communicable" is spelled as a combination of three phonemes "k", "m", "j", which represent the sounds [k], [m], [j], respectively. The final consonants "d" and "s" at the end of "diseases" are unvoiced sounds that are pronounced together as [z]. Overall, the spelling of the word "NICD" follows simple English phonetics rules and is easy to read and pronounce.
NICD stands for Nickel-Cadmium battery. It is a rechargeable battery widely used in various electronic devices and portable equipment.
The Nickel-Cadmium battery is a type of electrochemical cell that operates through reversible chemical reactions between nickel hydroxide (Ni(OH)2) and cadmium (Cd). It consists of two electrodes, a positive electrode (nickel hydroxide) and a negative electrode (cadmium), immersed in an alkaline electrolyte typically containing potassium hydroxide (KOH).
One of the key features of NICD batteries is their ability to be recharged numerous times, making them highly cost-effective and durable compared to disposable batteries. This recharging capability is due to the reversible nature of the chemical reactions that occur during charging and discharging cycles. It is important to note that to prevent memory effect, NICD batteries should be completely discharged before recharging, unlike some other battery types.
NICD batteries have been widely used in various applications, including portable electronics, power tools, emergency lighting, and medical devices. They are known for their high energy density, allowing them to store and deliver large amounts of energy in a compact size. However, they are gradually being phased out in many applications due to their lower energy density compared to newer battery technologies, such as lithium-ion batteries.
In summary, NICD batteries are rechargeable electrochemical cells that utilize nickel hydroxide and cadmium to store and deliver electrical energy. They offer durability, long lifespan, and high energy density, making them suitable for a wide range of applications.