alkaline cell

简明释义

碱性蓄电池

英英释义

例句

1.Many toys operate on alkaline cell batteries for longer-lasting power.

许多玩具使用碱性电池以提供更持久的电力。

2.The remote control requires two AA alkaline cell batteries to function properly.

遥控器需要两个AA碱性电池才能正常工作。

3.When camping, I always pack extra alkaline cell batteries for my flashlight.

露营时，我总是为我的手电筒准备额外的碱性电池。

4.You should replace the alkaline cell in your smoke detector every year.

您应该每年更换一次烟雾探测器中的碱性电池。

5.The camera uses a single alkaline cell for its operation.

相机使用一个碱性电池进行操作。

作文

The development of batteries has significantly impacted our daily lives, and one of the most common types is the alkaline cell. An alkaline cell (碱性电池) is a type of electrochemical cell that uses an alkaline electrolyte, typically potassium hydroxide. This design offers several advantages over other battery types, such as improved energy density and longer shelf life. In this essay, I will discuss the structure, functioning, and applications of alkaline cells, as well as their environmental implications.Firstly, the structure of an alkaline cell is quite simple yet effective. It consists of a positive electrode made of manganese dioxide, a negative electrode made of zinc, and an alkaline electrolyte. When the cell is in use, a chemical reaction occurs between the zinc and the manganese dioxide, which generates electrical energy. The alkaline electrolyte enhances this process by allowing ions to move freely between the electrodes, thus facilitating the flow of electricity.The functioning of an alkaline cell is rooted in basic electrochemical principles. During discharge, the zinc at the negative electrode oxidizes, releasing electrons. These electrons travel through the external circuit to the positive electrode, where they are accepted by manganese dioxide. This flow of electrons creates an electric current, which powers devices ranging from remote controls to flashlights. When the alkaline cell is recharged, the process can be reversed, allowing it to be used multiple times, although most standard alkaline cells are not designed for recharging.One of the key advantages of alkaline cells is their long shelf life. Unlike some other battery types that may lose charge over time, alkaline cells can retain their power for years when stored properly. This makes them particularly popular for devices that are used infrequently, such as smoke detectors and emergency flashlights. Additionally, the higher energy density of alkaline cells means they can deliver more power for a longer duration compared to standard carbon-zinc batteries.However, the widespread use of alkaline cells also raises environmental concerns. The production and disposal of these batteries can contribute to pollution if not handled properly. Zinc and manganese, while essential for battery function, can be harmful to the environment if they leach into the soil or water supply. Therefore, it is crucial to recycle alkaline cells to minimize their ecological footprint. Many communities have established battery recycling programs to ensure that used batteries are processed safely and responsibly.In conclusion, alkaline cells (碱性电池) play a vital role in our modern world by powering a wide range of electronic devices. Their efficient design and long shelf life make them a preferred choice for many applications. However, as consumers, we must also be aware of the environmental implications associated with their use and dispose of them responsibly. By understanding the importance of alkaline cells and taking steps to recycle them, we can enjoy their benefits while minimizing their impact on the planet.