LR6 battery

　　There are more and more LR6 battery. What’s the technical know-how behind them?

　　Humans have successively invented lead-acid batteries, zinc-manganese dioxide dry batteries with NH4Cl as the electrolyte, cadmium-nickel batteries, iron-nickel batteries, alkaline zinc-manganese batteries and lithium-ion batteries. As research continues to deepen, LR6 battery have emerged in recent years.

　　A battery is a device that converts energy produced by chemical reactions directly into electrical energy. It has the characteristics of stable voltage, stable current, stable power supply for a long time, little influence from the outside world, simple structure, easy to carry, simple and easy charging and discharging operations, stable and reliable performance, and brings a lot of convenience to modern social life.

　　In 1800, Italian scientist Volta made a Volta stack by contacting different metals with electrolyte, which is considered to be the first power supply device in human history. Humans have successively invented lead-acid batteries, zinc-manganese dioxide dry batteries with NH4Cl as the electrolyte, cadmium-nickel batteries, iron-nickel batteries, alkaline zinc-manganese batteries and lithium-ion batteries. As research continues to deepen, LR6 battery have emerged in recent years.

　　The fuel cell

　　A fuel cell is a power generation device that directly converts chemical energy present in fuel and oxidant into electrical energy. Fuel and air are fed into the fuel cell respectively, and electricity is wonderfully produced. It looks like a battery with positive and negative electrodes and electrolytes on the outside, but in fact it cannot "storage electricity" but is a "power plant".

　　The reaction principle of hydrogen-oxygen fuel cell is the reverse process of electrolyzing water.

　　The electrodes should be:

　　Negative electrode: H2+2OH-→2H2O+2e-

　　Positive electrode: 1/2O2+H2O2e-→2OH-

　　Battery reaction: H2+1/2O2==H2O

　　Fuel cells involve relevant theories of chemical thermodynamics, electrochemistry, electrocatalysis, materials science, power systems and automatic control. Only the fuel cell itself cannot work. There must be a set of corresponding auxiliary systems, including reactant supply systems, heat exhaust systems, drainage systems, electrical performance control systems and safety devices, etc.

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