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.
 

1. What are the effects of electrode materials on battery performance?

The electrode materials significantly impact a battery's capacity, voltage, and overall performance. Different materials can alter the energy density, power density, cycle life, and safety of the battery. For example, using lithium cobalt oxide in lithium-ion batteries offers high energy density but poses safety risks, whereas lithium iron phosphate provides better safety and longer cycle life but with lower energy density.

2. How do the properties of electrode materials affect battery life?

The durability and longevity of a battery are closely linked to the electrochemical stability and physical properties of the electrode materials used. Materials that can withstand repeated cycles of charging and discharging without significant degradation tend to enhance battery life. For instance, materials that suffer from less expansion and contraction during these cycles are likely to maintain structural integrity and offer longer battery life.

3. What are the latest advancements in electrode materials for batteries?

Recent advancements in electrode materials focus on increasing energy density, enhancing safety, reducing costs, and improving environmental sustainability. Innovations include the development of solid-state electrolytes, silicon-based anodes which offer much higher capacities compared to traditional graphite, and sulfur cathodes for lithium-sulfur batteries which promise higher energy storage capabilities.

4. How do electrode materials impact the charging speed of batteries?

The type of electrode material can significantly influence the charging speed of batteries. Materials that allow for faster ion transport can enable quicker charging times. For example, graphite anodes are typically slower in ion transport, whereas lithium titanate anodes can facilitate faster ion movement, thus supporting rapid charging capabilities.

5. What role do electrode materials play in the environmental impact of batteries?

Electrode materials determine the environmental footprint of battery production and disposal. Materials that are rare, toxic, or have high environmental costs associated with their extraction and processing contribute negatively to the environmental impact. Developing more sustainable materials, such as those derived from abundant and non-toxic resources, or improving recycling technologies, is crucial for reducing this impact.

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