In addition to lemons, there are other fruits that can also be made into fruit batteries

1.Choose fruits that are more acidic, such as: lemons, tomatoes, etc.

To see the content of the liquid in the fruit and the level of pH value, the two electrodes of the fruit battery you want to make are determined, to generate a large amount of electricity, depending on the conductivity of the juice in the fruit, measured by conductivity or resistivity, I personally recommend using oranges or tomatoes. Of course, if you want to be bigger, you can use any watermelon.

There are many that support 1.

A fruit battery is a trolley battery that inserts a chemically different metal into the fruit, so that a galvanic cell can be formed due to the acidic electrolyte in the fruit. The principle of power generation of the fruit battery is: the electrochemical activity of the two metal sheets is not the same, the more active metal sheet can replace the hydrogen ions of the acidic substances in the fruit, due to the positive charge, the whole system needs to be stable (or the electric field is generated, the electric field causes the following results), so in the case of the galvanic battery, the electrons maintain the stability of the system from the loop, so theoretically the current is directly related to the concentration of fruit acid, (If it is to be expressed as a functional relationship, then this function is actually related to ionic strength and is also a quantitative relationship, and the relationship between ion concentration is qualitative), in this case, if the length of the loop changes, it will inevitably cause a change in the loop, so it will also cause a change in voltage.

Fruit battery production.

Preparation tools: iron nails, galvanized screws, apples, fruit knives, wires with crocodile clips, multimeter.

How to do it Steps:

<>4. Finally, insert the iron nail and galvanized screws into the apple, as in the picture, and then the voltage can be measured. It means that the fruit battery has been successful.

Basically, a lot of fruits can be recommended with apples, oranges and the like.

The principle of power generation of fruit battery is: the electrochemical activity of the two metal sheets is different, among which the more active metal sheet can replace the hydrogen ions of the acidic substances in the fruit, due to the positive charge, the whole system needs to be stable (or the charge is generated, and the charge causes the following results), so in the case of the galvanic battery, the electrons maintain the stability of the system from the loop, so theoretically the current size is directly related to the concentration of fruit acid, (If it is to be expressed as a functional relationship, then this function is actually related to ionic strength and quantitative relationship, and has a qualitative relationship with ion concentration), in this case, if the length of the loop changes, it will inevitably cause the loop to change, so it will also cause the voltage to change.

1.Choose more acidic fruits, such as: lemons, tomatoes, etc. 2 It depends on the content of the liquid in the fruit and the level of the pH value, the two electrodes of the fruit battery you want to make are determined, to generate a large amount of electricity, depending on the conductivity of the juice in the fruit, measured by conductivity or resistivity, I personally recommend using oranges or tomatoes.

Of course, if you want to be bigger, you can use any watermelon. There are many that support 1.

To convert chemical energy into electrical energy.

The fruit battery is a kind of battery that uses the chemical substances in the fruit and the metal sheet to react to produce electric energy, the electrochemical activity of the two metal sheets is different, and the more active metal sheet can replace the hydrogen ions of the acidic substances in the fruit, and the whole system needs to be stable due to the positive charge generated (or the electric charge is generated, and the electric charge causes the following results).

In the case of galvanic cells, free electrons maintain the stability of the system from the loop, and theoretically the current is directly related to the concentration of fruit acid, in this case, if the length of the loop changes, it will inevitably cause the loop to change, so it will also cause the voltage to change.

Fruit batteries, can fruits generate electricity? Do students still memorize the metal activity order chart?

If you say that the fruit battery is a device that inserts two different metal electrodes into the fruit, then the fruit in the device only acts as an electrolyte (electronic insulation, ionic conductivity), and the energy conversion is the conversion of chemical energy into electrical energy.

Material preparation: apple, fruit knife, iron nail, galvanized, battery, multimeter.

The specific steps are as follows:

2. Use a fruit knife to cut the apples into crescent shapes, or you can cut them into diced apples.

3. It is best to use copper and zinc, and iron nails and galvanized screws can be used instead.

4. The principle of fruit battery is the same as that of dry battery, which can be used in series, so that a higher voltage can be obtained.

5. We cut the apples into pieces, then make small batteries, and then connect them in series, like in the picture.

6. The voltage generated by the fruit battery after series connection can be measured with a multimeter, and if we want to get a higher voltage, we can continue to connect in series, or replace the metal.

(1) Materials for making fruit batteries:

a.Acidic and juicy fruits, no spaced fruits such as citrus, pomelo, lemon, etc.

b.Copper sheet (positive electrode), zinc sheet (negative electrode).

c.wires, electrical appliances.

Production method: insert a copper sheet and a zinc sheet into a fruit, the two pieces should be closer to each other, but can not touch the piece, a plurality of fruits are plugged in this way, and the positive electrode (copper sheet) and negative electrode (zinc sheet) of each fruit are connected in series with wires, the positive electrode (copper sheet) of the beginning is the positive pole of the power supply, and the negative electrode (zinc sheet) at the end is the negative pole of the power supply. Connect the wire with the electrical appliance, so that the current loop is formed, in which the current will be generated, and the electrical appliance can be used.

2) The principle of fruit battery: the acidic liquid in the fruit is equivalent to the electrolyte solution (acid, alkali and salt solution are all electrolyte solutions), the copper sheet is the positive electrode, and the zinc sheet is the negative electrode. Electrons flow from the negative electrode to the positive electrode through the wire (equivalent to an electric current flowing from the positive electrode to the negative electrode), and a chemical reaction occurs at the end of the copper and zinc sheets that come into contact with the electrolyte solution (redox reaction, which can be understood as a reaction in which electrons are gained or lost).

In this way, the fruit battery can continuously provide power to the consumer.

Note: The voltage of this fruit battery is low (one fruit), and it takes many series connections to drive the electrical appliances to reach the appropriate voltage. In addition, the life of this fruit battery is very short, and it is of little practical value.

3) Explain fruit batteries from an electrochemical point of view:

From the perspective of electrochemistry, the chemical reaction in the fruit battery is called the galvanic cell reaction. There are three conditions for the composition of galvanic batteries:

a.The electrode material is composed of two metals with different reactivity or metal and other conductive materials (non-metal or some oxides, etc.);

b.Both electrodes must be immersed in an electrolyte solution.

c.There are wires and electrical connections between the two electrodes to form a closed loop.

As long as the above three conditions are met, it can constitute a galvanic battery. Chemical power sources, on the other hand, require a continuous and stable current, so in addition to the three components of galvanic batteries, it is also required to have a spontaneous redox reaction. In other words, the chemical power source must be a galvanic battery, but a galvanic battery may not always be a chemical battery.

The metal with high activity is used as the negative electrode of the galvanic battery, and the metal with poor activity is used as the positive electrode of the galvanic battery. The activity of common metals is as follows: magnesium (mg) aluminum (al) zinc (zn) iron (fe) tin (sn) lead (pb) copper (cu).

I hope it helps you, and if you have any questions, you can ask them

I wish you progress in your studies and go to the next level! (*

This is not very easy, it is better to change it, or talk about how to do it, find a more acidic fruit is better than an orange, find a zinc or magnesium sheet and insert it into the fruit, and then find a copper sheet and insert it into the fruit, connect it with a wire, and connect it in series with a light-emitting diode in the wire, and it's OK.

Can be used lemon, orange acidic fruit. When the zinc sheet is inserted on the opposite side, the voltage can be added in parallel to connect the current in series. The principle is not explained, the directional movement of electrons to form a current to estimate that copper is a positive electrode... Measurable.

The simple way to make a fruit battery is as follows:

Tools Materials: zinc sheets, copper sheets, lemons, wires, small bulbs.

1.First, turn all the lemons, one at a time. Squeeze them with your hands as you turn them until you feel like they're getting a little "soft".

2.Screw a galvanized screw into about 1 3 of a lemon. Using a knife, carefully make a 1 cm incision 1 3 on the other side of the lemon. Insert the coin into the cut until half of the coin is in the lemon.

3.Insert the coin and screw into the other two lemons like this. Next, using wires and clips, connect the screws on the first lemon to the coins on the second lemon, and so on, so that the three lemon batteries are connected together.

At the same time, the first coin and the last screw are connected with a wire with a clip.

4.Finally, mark the clip attached to the first coin with a "+" and the clip attached to the last screw with a "-" Like a real battery pack, a lemon battery pack has a positive (+) and a negative (-) electrode, and everything is ready to go. Connect the positive terminal of the LED to the positive terminal of the lemon battery pack.

Connect the negative terminal of the LED to the negative terminal of the lemon battery pack. The LEDs glow!