Cargando…
Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer
Materials with a positive temperature coefficient have many applications, including overcharge and over-temperature protection in lithium-ion (Li-ion) batteries. The thermoresistive properties of an electrically conductive polymer, based on a Ni(salen)-type backbone, known as polyNiMeOSalen, were ev...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7762270/ https://www.ncbi.nlm.nih.gov/pubmed/33291328 http://dx.doi.org/10.3390/polym12122925 |
_version_ | 1783627765452374016 |
---|---|
author | Beletskii, Evgenii Ershov, Valentin Danilov, Stepan Lukyanov, Daniil Alekseeva, Elena Levin, Oleg |
author_facet | Beletskii, Evgenii Ershov, Valentin Danilov, Stepan Lukyanov, Daniil Alekseeva, Elena Levin, Oleg |
author_sort | Beletskii, Evgenii |
collection | PubMed |
description | Materials with a positive temperature coefficient have many applications, including overcharge and over-temperature protection in lithium-ion (Li-ion) batteries. The thermoresistive properties of an electrically conductive polymer, based on a Ni(salen)-type backbone, known as polyNiMeOSalen, were evaluated by means of in situ resistivity measurements. It was found that the polymer was conductive at temperatures below 220 °C; however, the polymer increased in resistivity by three orders of magnitude upon reaching 250 °C. Thermogravimetric results combined with elemental analyses revealed that the switch from the insulation stage to the conductive stage resulted from thermally dedoping the polymer. Electrochemical studies demonstrated that a polymer retains its electroactivity when it is heated and can be recovered to a conductive state through oxidation via electrochemical doping in an electrolyte solution. |
format | Online Article Text |
id | pubmed-7762270 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77622702020-12-26 Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer Beletskii, Evgenii Ershov, Valentin Danilov, Stepan Lukyanov, Daniil Alekseeva, Elena Levin, Oleg Polymers (Basel) Article Materials with a positive temperature coefficient have many applications, including overcharge and over-temperature protection in lithium-ion (Li-ion) batteries. The thermoresistive properties of an electrically conductive polymer, based on a Ni(salen)-type backbone, known as polyNiMeOSalen, were evaluated by means of in situ resistivity measurements. It was found that the polymer was conductive at temperatures below 220 °C; however, the polymer increased in resistivity by three orders of magnitude upon reaching 250 °C. Thermogravimetric results combined with elemental analyses revealed that the switch from the insulation stage to the conductive stage resulted from thermally dedoping the polymer. Electrochemical studies demonstrated that a polymer retains its electroactivity when it is heated and can be recovered to a conductive state through oxidation via electrochemical doping in an electrolyte solution. MDPI 2020-12-06 /pmc/articles/PMC7762270/ /pubmed/33291328 http://dx.doi.org/10.3390/polym12122925 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Beletskii, Evgenii Ershov, Valentin Danilov, Stepan Lukyanov, Daniil Alekseeva, Elena Levin, Oleg Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer |
title | Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer |
title_full | Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer |
title_fullStr | Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer |
title_full_unstemmed | Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer |
title_short | Resistivity-Temperature Behavior of Intrinsically Conducting Bis(3-methoxysalicylideniminato)nickel Polymer |
title_sort | resistivity-temperature behavior of intrinsically conducting bis(3-methoxysalicylideniminato)nickel polymer |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7762270/ https://www.ncbi.nlm.nih.gov/pubmed/33291328 http://dx.doi.org/10.3390/polym12122925 |
work_keys_str_mv | AT beletskiievgenii resistivitytemperaturebehaviorofintrinsicallyconductingbis3methoxysalicylideniminatonickelpolymer AT ershovvalentin resistivitytemperaturebehaviorofintrinsicallyconductingbis3methoxysalicylideniminatonickelpolymer AT danilovstepan resistivitytemperaturebehaviorofintrinsicallyconductingbis3methoxysalicylideniminatonickelpolymer AT lukyanovdaniil resistivitytemperaturebehaviorofintrinsicallyconductingbis3methoxysalicylideniminatonickelpolymer AT alekseevaelena resistivitytemperaturebehaviorofintrinsicallyconductingbis3methoxysalicylideniminatonickelpolymer AT levinoleg resistivitytemperaturebehaviorofintrinsicallyconductingbis3methoxysalicylideniminatonickelpolymer |