Question about battery -- Looking into the electrode effects on the battery

In summary: E2%80%9DIn summary, HagopBatteries are chemical devices which use electrochemistry to create a voltage. The maximum current is determined by the area and composition of the interface, and heat dissipation vs compactness is also a consideration. Folding the cathode and anode would not increase the number of electrons moving between them, but it would increase the shared surface which would lead to more electron moving. It is really a solid state physics question, not a chemistry question.
  • #1
hagopbul
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TL;DR Summary
looking into the electrodes effects on the battery
Hello All :

i had few suggestions about battery enhancement using some ideas which i had just abstract understanding not enough even to suggest discussion but i have this question

why we dont fold the anode and the cathode into geometrical shape , wouldnt that increase the number of electrons that move between them during charge and discharge ?

if we fold them into geometrical shape would we have irregular electric field effecting each segment of them ?

if we increase the number of electrons moving between the anode and the cathode would that mean higher ampere which means smaller lighter batteries ?
sadly i am away now from the academic life or the research life so an answer to this question would take very long time from me ?
Best
Hagop
 
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  • #2
Batteries are chemical devices. The voltage is determined by the electrochemistry at an interface, and the maximum current by the area and composition of that interface. The other major geometric design consideration is heat dissipation vs compactnessl.
 
  • #3
with folding the cathode and anode wouldnt that increase the shared surface which means high probability for electron to move , resulting in more electron moving increasing the electron number per unit time , it is really a solid state physics not a chemistry question :)

but with folding isnt every unit area is exposed to more than one electric field resulting from neighboring electrode , with the vector sum not the same as the next or previous unit area

also i agree with you on the other major geometric design consideration
 
  • #4
Many batteries roll up the cathode and the anode to pack more surface area in a smaller volume. This is not what I would call "solid state physics"
The things you seem to be envisioning will likely not be useful because diffusion rates will not be permanently much affected by these modifications. If you fold (wrinkle) the surface, then the valleys are less effective than the hills in projecting electric ields and not much changes in the overall throughput. Also these surfaces are often not stable.
 

Related to Question about battery -- Looking into the electrode effects on the battery

What are the main types of electrodes used in batteries?

The main types of electrodes used in batteries are the anode and the cathode. The anode is typically made of materials like graphite or lithium metal in lithium-ion batteries, while the cathode can be composed of various compounds such as lithium cobalt oxide, lithium iron phosphate, or lithium nickel manganese cobalt oxide. These materials are chosen based on their ability to store and release ions effectively during the charge and discharge cycles.

How do electrode materials affect battery performance?

Electrode materials significantly affect battery performance in terms of capacity, voltage, cycle life, and safety. High-capacity materials can store more energy, while materials with high voltage can deliver more power. The cycle life of a battery is influenced by the stability and durability of the electrode materials. Additionally, the choice of materials impacts the safety of the battery, as some materials are more prone to reactions that can lead to overheating or fire.

What is the role of the electrolyte in relation to the electrodes?

The electrolyte in a battery serves as a medium for ion transport between the anode and cathode during the charge and discharge processes. It helps maintain the flow of ions while preventing the direct contact of the electrodes, which would cause a short circuit. The electrolyte's composition can affect the battery's overall performance, including its conductivity, stability, and safety.

How do electrode surface modifications improve battery efficiency?

Surface modifications of electrodes can improve battery efficiency by enhancing the electrode's conductivity, increasing the surface area for electrochemical reactions, and reducing unwanted side reactions. Techniques such as coating the electrode surface with conductive materials, adding protective layers, or creating porous structures can lead to better charge transfer, higher capacity, and longer cycle life.

What are the common challenges in developing new electrode materials?

Common challenges in developing new electrode materials include achieving a balance between high capacity and long cycle life, ensuring safety, and maintaining cost-effectiveness. Researchers also face difficulties in synthesizing materials that are stable over many charge and discharge cycles, as well as ensuring that these materials can be produced at scale. Additionally, compatibility with existing battery components and environmental impact are important considerations.

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