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為了演示蓄電池的蓄電作用,我利用一些容易取得的材料制成一個小型蓄電池,实驗的效果很好。通过这個演示,学生直观地見到電能和化学能交互轉變的过程,对於蓄電原理獲得比较牢固的認識。現在介紹製造的方法如下。 1.取一個100厘米~3的燒杯作為容器。 2.取比重1.2克重/厘米~3的稀硫酸70—80厘米~3作為電池液。硫酸濃度不是很嚴格的,一般硫酸就可以用,水也不必要很純的蒸餾水,只要雜質较少的就行,这些影响那不大。 3.取用完了牙膏的牙膏管皮子作電極。先把皮子的頸部截去,再把下部翻开,使它成為一張長方形的薄鉛皮。然後用小刀和水小心地刮去塗有商標等的物質,並使鉛片的兩面都很清潔。这樣,每張鉛皮的大小約為10厘米×8厘米,可把兩張鉛片接起來使用。為了減小所
In order to demonstrate the storage effect of the battery, I use some easy to obtain materials made of a small battery, the experiment works well. Through this demonstration, students intuitively see the process of interaction between electricity and chemical energy, and get a more solid understanding of the principle of electricity storage. Now introduce the manufacturing method is as follows. 1. Take a 100 cm ~ 3 beaker as a container. 2. Take the weight of 1.2 g / cm3 ~ 70-80 cm3 dilute sulfuric acid as a battery solution. Sulfuric acid concentration is not very strict, the general can use sulfuric acid, water is not necessary pure distilled water, as long as less impurities on the line, these effects are not that big. 3. Take out the toothpaste tube toothpaste tube for the electrode. First cut off the neck of the leather, then open the lower part, making it a rectangular thin lead. Then carefully wipe off the material coated with a trademark and the like with a knife and water and make both sides of the lead sheet clean. In this way, each lead skin size is about 10 cm × 8 cm, can be used to pick up two pieces of lead. In order to reduce the