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Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction
Use of compounds that contain fluorine (F) as electrode materials in lithium ion batteries has been considered, but synthesizing single‐phase samples of these compounds is a difficult task. Here, it is demonstrated that a simple scalable single‐step solid‐state process with additional fluorine sourc...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5064735/ https://www.ncbi.nlm.nih.gov/pubmed/27774395 http://dx.doi.org/10.1002/advs.201500366 |
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author | Kim, Minkyung Lee, Seongsu Kang, Byoungwoo |
author_facet | Kim, Minkyung Lee, Seongsu Kang, Byoungwoo |
author_sort | Kim, Minkyung |
collection | PubMed |
description | Use of compounds that contain fluorine (F) as electrode materials in lithium ion batteries has been considered, but synthesizing single‐phase samples of these compounds is a difficult task. Here, it is demonstrated that a simple scalable single‐step solid‐state process with additional fluorine source can obtain highly pure LiVPO(4)F. The resulting material with submicron particles achieves very high rate capability ≈100 mAh g(−1) at 60 C‐rate (1‐min discharge) and even at 200 C‐rate (18 s discharge). It retains superior capacity, ≈120 mAh g(−1) at 10 C charge/10 C discharge rate (6‐min) for 500 cycles with >95% retention efficiency. Furthermore, LiVPO(4)F shows low polarization even at high rates leading to higher operating potential >3.45 V (≈3.6 V at 60 C‐rate), so it achieves high energy density. It is demonstrated for the first time that highly pure LiVPO(4)F can achieve high power capability comparable to LiFePO(4) and much higher energy density (≈521 Wh g(−1) at 20 C‐rate) than LiFePO(4) even without nanostructured particles. LiVPO(4)F can be a real substitute of LiFePO(4.) |
format | Online Article Text |
id | pubmed-5064735 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-50647352016-10-19 Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction Kim, Minkyung Lee, Seongsu Kang, Byoungwoo Adv Sci (Weinh) Full Papers Use of compounds that contain fluorine (F) as electrode materials in lithium ion batteries has been considered, but synthesizing single‐phase samples of these compounds is a difficult task. Here, it is demonstrated that a simple scalable single‐step solid‐state process with additional fluorine source can obtain highly pure LiVPO(4)F. The resulting material with submicron particles achieves very high rate capability ≈100 mAh g(−1) at 60 C‐rate (1‐min discharge) and even at 200 C‐rate (18 s discharge). It retains superior capacity, ≈120 mAh g(−1) at 10 C charge/10 C discharge rate (6‐min) for 500 cycles with >95% retention efficiency. Furthermore, LiVPO(4)F shows low polarization even at high rates leading to higher operating potential >3.45 V (≈3.6 V at 60 C‐rate), so it achieves high energy density. It is demonstrated for the first time that highly pure LiVPO(4)F can achieve high power capability comparable to LiFePO(4) and much higher energy density (≈521 Wh g(−1) at 20 C‐rate) than LiFePO(4) even without nanostructured particles. LiVPO(4)F can be a real substitute of LiFePO(4.) John Wiley and Sons Inc. 2015-12-29 /pmc/articles/PMC5064735/ /pubmed/27774395 http://dx.doi.org/10.1002/advs.201500366 Text en © 2015 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Full Papers Kim, Minkyung Lee, Seongsu Kang, Byoungwoo Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction |
title | Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction |
title_full | Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction |
title_fullStr | Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction |
title_full_unstemmed | Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction |
title_short | Fast‐Rate Capable Electrode Material with Higher Energy Density than LiFePO(4): 4.2V LiVPO(4)F Synthesized by Scalable Single‐Step Solid‐State Reaction |
title_sort | fast‐rate capable electrode material with higher energy density than lifepo(4): 4.2v livpo(4)f synthesized by scalable single‐step solid‐state reaction |
topic | Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5064735/ https://www.ncbi.nlm.nih.gov/pubmed/27774395 http://dx.doi.org/10.1002/advs.201500366 |
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