Editing Graphite (section)

===Batteries===
The use of graphite in batteries has increased since the 1970s. Natural and synthetic graphite are used as an [[anode]] material to construct [[electrode]]s in major battery technologies.<ref>{{cite web | url=https://www.targray.com/li-ion-battery/anode-materials/graphite | title =Graphite Anode Materials | author =Targray | publisher=[[Targray]] | date =August 27, 2020}}</ref>

The demand for batteries, primarily [[Nickel–metal hydride battery|nickel–metal hydride]] and [[lithium-ion batteries]], caused a growth in demand for graphite in the late 1980s and early 1990s – a growth driven by portable electronics, such as portable [[CD player]]s and [[power tool]]s. [[Laptop]]s, [[mobile phone]]s, [[tablet computer|tablet]]s, and smartphone products have increased the demand for batteries. Electric-vehicle batteries are anticipated to increase graphite demand. As an example, a lithium-ion battery in a fully electric [[Nissan Leaf]] contains nearly 40&nbsp;kg of graphite.{{citation needed|date=November 2022}}

Radioactive graphite removed from nuclear reactors has been investigated as a source of electricity for low-power applications. This waste is rich in [[carbon-14]], which emits electrons through [[beta decay]], so it could potentially be used as the basis for a [[betavoltaic device]]. This concept is known as the [[diamond battery]].