8 Questions
What is the primary function of batteries?
To allow electricity-operated devices to work without being connected to a grid
What is the characteristic of rechargeable batteries?
They can be recharged many times
What is a benefit of using graphene in batteries?
It makes the battery more environmentally friendly
What is a drawback of using lithium-ion batteries?
They require large quantities of water and contain polluting materials
What is the structure of graphene?
A single layer of carbon atoms bound together in a honeycomb lattice pattern
What is a benefit of graphene compared to lithium?
It is more sustainable and eco-friendly
What is a characteristic of graphene?
It is extremely lightweight and flexible
What is a benefit of using graphene in battery production?
It reduces the environmental impact of battery production
Study Notes
Batteries
- Portable sources of power that allow devices to operate without a grid connection
- Divided into two main types: disposable and rechargeable
Disposable Batteries
- Used once and then disposed of after exhaustion
Rechargeable Batteries
- Can be recharged multiple times
- Examples: lead-acid batteries (used in vehicles), lithium-ion and lithium-ion polymer batteries (used in mobile phones, tablets, PCs, smartwatches, etc.)
- Lightweight, safer, and have longer lives
Limitations of Batteries
- Despite being rechargeable, their lifespan is still too short for current needs
Graphene
- A "wonder material" with countless applications
- A single layer of carbon atoms bound together in a honeycomb lattice pattern
- A powerful electrical and thermal conductor
- Extremely lightweight, chemically inert, and flexible with a large surface area
Environmental Benefits of Graphene
- Eco-friendly and sustainable
- Manufacturing process is environmentally-friendly, with low water and energy usage
- Doesn't involve hazardous chemicals
Comparison to Lithium
- Lithium extraction and processing have a high environmental impact
- Requires large quantities of water, which could be used for agriculture and human consumption
- Contains cobalt, a metal that is highly polluting and difficult to dispose of
Learn about the different types of batteries, including disposable and rechargeable batteries, and their uses in various devices.
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