Cargando…
Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12)
In Li-ion batteries (LIBs), a memory effect has been revealed in two-phase electrode materials such as olivine LiFePO(4) and anatase TiO(2), which complicates the two-phase transition and influences the estimation of the state of charge. Practical electrode materials are usually optimized by the ele...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Royal Society of Chemistry
2015
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5497270/ https://www.ncbi.nlm.nih.gov/pubmed/28717466 http://dx.doi.org/10.1039/c5sc00429b |
_version_ | 1783248129561198592 |
---|---|
author | Li, De Sun, Yang Liu, Xizheng Peng, Ruwen Zhou, Haoshen |
author_facet | Li, De Sun, Yang Liu, Xizheng Peng, Ruwen Zhou, Haoshen |
author_sort | Li, De |
collection | PubMed |
description | In Li-ion batteries (LIBs), a memory effect has been revealed in two-phase electrode materials such as olivine LiFePO(4) and anatase TiO(2), which complicates the two-phase transition and influences the estimation of the state of charge. Practical electrode materials are usually optimized by the element doping strategy, however, its impact on the memory effect has not been reported yet. Here we firstly present the doping-induced memory effect in LIBs. Pristine Li(4)Ti(5)O(12) is free from the memory effect, while a distinct memory effect could be induced by Al-doping. After being discharged to a lower cutoff potential, Al-doped Li(4)Ti(5)O(12) exhibits poorer electrochemical kinetics, delivering a larger overpotential during the charging process. This dependence of the overpotential on the discharging cutoff leads to the memory effect in Al-doped Li(4)Ti(5)O(12). Our discovery emphasizes the impact of element doping on the memory effect of electrode materials, and thus has implications for battery design. |
format | Online Article Text |
id | pubmed-5497270 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-54972702017-07-17 Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12) Li, De Sun, Yang Liu, Xizheng Peng, Ruwen Zhou, Haoshen Chem Sci Chemistry In Li-ion batteries (LIBs), a memory effect has been revealed in two-phase electrode materials such as olivine LiFePO(4) and anatase TiO(2), which complicates the two-phase transition and influences the estimation of the state of charge. Practical electrode materials are usually optimized by the element doping strategy, however, its impact on the memory effect has not been reported yet. Here we firstly present the doping-induced memory effect in LIBs. Pristine Li(4)Ti(5)O(12) is free from the memory effect, while a distinct memory effect could be induced by Al-doping. After being discharged to a lower cutoff potential, Al-doped Li(4)Ti(5)O(12) exhibits poorer electrochemical kinetics, delivering a larger overpotential during the charging process. This dependence of the overpotential on the discharging cutoff leads to the memory effect in Al-doped Li(4)Ti(5)O(12). Our discovery emphasizes the impact of element doping on the memory effect of electrode materials, and thus has implications for battery design. Royal Society of Chemistry 2015-07-01 2015-04-17 /pmc/articles/PMC5497270/ /pubmed/28717466 http://dx.doi.org/10.1039/c5sc00429b Text en This journal is © The Royal Society of Chemistry 2015 http://creativecommons.org/licenses/by/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0) |
spellingShingle | Chemistry Li, De Sun, Yang Liu, Xizheng Peng, Ruwen Zhou, Haoshen Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12) |
title | Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12)
|
title_full | Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12)
|
title_fullStr | Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12)
|
title_full_unstemmed | Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12)
|
title_short | Doping-induced memory effect in Li-ion batteries: the case of Al-doped Li(4)Ti(5)O(12)
|
title_sort | doping-induced memory effect in li-ion batteries: the case of al-doped li(4)ti(5)o(12) |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5497270/ https://www.ncbi.nlm.nih.gov/pubmed/28717466 http://dx.doi.org/10.1039/c5sc00429b |
work_keys_str_mv | AT lide dopinginducedmemoryeffectinliionbatteriesthecaseofaldopedli4ti5o12 AT sunyang dopinginducedmemoryeffectinliionbatteriesthecaseofaldopedli4ti5o12 AT liuxizheng dopinginducedmemoryeffectinliionbatteriesthecaseofaldopedli4ti5o12 AT pengruwen dopinginducedmemoryeffectinliionbatteriesthecaseofaldopedli4ti5o12 AT zhouhaoshen dopinginducedmemoryeffectinliionbatteriesthecaseofaldopedli4ti5o12 |