How Batteries Work - Battery electricity working principle
Why Physics Stack Exchange recommends it
Physics Stack Exchange users link it when answering or asking about what actually happens inside a battery, especially why electrons do not flow directly between the terminals through the electrolyte.
Recommended by 1 people across 1 different months, 2021 to 2022.
What it is
An animated explainer from The Engineering Mindset on how batteries work, walking through the anode, cathode, electrolyte and separator inside a typical alkaline cell and how chemical reactions drive electron flow through an external circuit. It starts from the basics of what batteries are used for.
What people said
Recommends Markoul11 · 2021-12 · Physics Stack Exchange · on “Does electron current flow through inside a battery when connected to an electrical load?”
Actually this video [this video] describes in detail what happens in an typical alkaline battery which I believe is what here is referred to. There is no even an ion direct current flowing from the anode to the cathode. Both plates interact separately with the electrolyte solution and the electrolyte solution then adds electrons to the (-) terminal plate of the battery. The barrier I've described is real and prevents electron current directly flowing from one terminal plate to the other.
Cites Sunil · 2021-02 · Physics Stack Exchange · on “In a new unconnected battery, has a chemical reaction already occurred to cause excess electrons on anode end?”
I read somewhere that in an alkaline battery, electrons cannot flow from anode to cathode due to a special material surrounding the electrolyte on anode end that allows ions to pass through but not electrons from anode. I was viewing a video on YouTube which is as at this link [this video]
Cites Aarushi Agarwal · 2022-03 · Physics Stack Exchange · on “Is battery a source of electrons OR a driving force?”
A more elaborate question " With my previous knowledge I am aware that a wire possesses a sea of electrons ( free electrons) and the flow of those electrons is called current . The energy to flow is given by the battery converting chemical to electrical energy " But after seeing this [this video] video , it rather shows battery as a more of a source of electrons flowing from the negative to the positive terminal . My view : After chemical reaction in the battery it produces electrons , those electrons flow through the wire r epelling other free electrons present in the conductor(wire) forming a chain of electrons repelling and flowing through the positive terminal . * This energy or electrical en