Editing Lithium polymer battery (section)

{{short description|Lithium-ion battery using a polymer electrolyte}}
{{Redirect2|Li-Po|LiPo||Li Po (disambiguation)}}
{{ infobox battery
| image = File:Li-Po Battery from an iPhone 4.jpg
| EtoW  = {{nowrap|100–265 [[Watt hour|W·h]]/[[kg]]}} {{nowrap|(0.36–0.95 MJ/kg)}}<ref name="Lithium-Ion Battery">{{Cite web|title=Lithium-Ion Battery|url=https://www.cei.washington.edu/education/science-of-solar/battery-technology/|access-date=2022-01-06|website=Clean Energy Institute|language=en-US}}</ref>
| EtoS  = {{nowrap|250–670 [[Watt hour|W·h]]/[[Liter|L]]}} {{nowrap|(0.90–2.63 MJ/L)}}<ref name="Lithium-Ion Battery"/>|caption=A lithium polymer battery used to power a [[smartphone]].
}}

A '''lithium polymer battery''', or more correctly, '''lithium-ion polymer battery''' (abbreviated as '''LiPo''', '''LIP''', '''Li-poly''', '''lithium-poly,''' and others), is a [[rechargeable battery]] derived from [[lithium-ion battery|lithium-ion]] and [[lithium-metal battery]] technology. The primary difference is that instead of using a liquid [[Lithium salt]] (such as [[lithium hexafluorophosphate]], LiPF<sub>6</sub>) held in an [[organic solvent]] (such as [[Ethylene carbonate|EC]]/[[Dimethyl carbonate|DMC]]/[[Diethyl carbonate|DEC]]) as the [[electrolyte]], the battery uses a solid (or semi-solid) [[polymer electrolyte]] such as [[polyethylene glycol]] (PEG), [[polyacrylonitrile]] (PAN), [[poly(methyl methacrylate)]] (PMMA) or [[Polyvinylidene fluoride|poly(vinylidene fluoride)]] (PVdF). Other terms used in the literature for this system include hybrid polymer electrolyte (HPE), where "hybrid" denotes the combination of the polymer matrix, the liquid solvent, and the salt.<ref name="Nature_01">{{cite journal |last1=Tarascon |first1=Jean-Marie |author-link1 =Jean-Marie Tarascon |last2=Armand |first2=Michele |date=2001 |title=Issues and challenges facing rechargeable lithium batteries |journal=Nature |volume=414 |issue=6861 |pages=359–367|doi=10.1038/35104644 |pmid=11713543|bibcode=2001Natur.414..359T |s2cid=2468398 }}</ref> 

Polymer electrolytes can be divided into two large categories: dry solid polymer electrolytes (SPE) and gel polymer electrolytes (GPE).<ref name=":0">{{Cite journal |last=Mater |first=J |date=2016 |title=Polymer electrolytes for lithium polymer batteries |url=https://pubs-rsc-org.turing.library.northwestern.edu/en/content/articlelanding/2016/ta/c6ta02621d |journal=Journal of Materials Chemistry A |volume=4 |issue=26 |pages=10038–10069 |doi=10.1039/C6TA02621D |via=Royal Society of Chemistry|url-access=subscription }}</ref>

In comparison to liquid electrolytes and solid organic electrolytes, polymer electrolytes offer advantages such as increased resistance to variations in the volume of the electrodes throughout the charge and discharge processes, improved safety features, excellent flexibility, and processability. These batteries provide higher [[specific energy]] than other lithium battery types.

They are used in applications where [[weight]] is critical, such as [[laptop computer]]s, [[tablet computer|tablets]], [[smartphone]]s, [[radio-controlled aircraft]], and some [[electric vehicle]]s.<ref>Bruno Scrosati, K. M. Abraham, Walter A. van Schalkwijk, Jusef Hassoun (ed), ''Lithium Batteries: Advanced Technologies and Applications'', John Wiley & Sons, 2013 {{ISBN|1118615395}},page 44</ref>