Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion Batteries
In this paper, we report a facile one-step hydrothermal method to synthesize tetragonal Na3V2(PO4)2F3@C particles which are connected by carbon nanotubes (CNTs) networks, using water as hydrothermal solvents. In this strategy, the reduction and crystallization of materials are carried out in the hyd...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Frontiers Media S.A.
2019-10-01
|
Series: | Frontiers in Chemistry |
Subjects: | |
Online Access: | https://www.frontiersin.org/article/10.3389/fchem.2019.00689/full |
id |
doaj-4cbe3e5960d1408ca0cefe83edc35682 |
---|---|
record_format |
Article |
spelling |
doaj-4cbe3e5960d1408ca0cefe83edc356822020-11-25T00:12:41ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462019-10-01710.3389/fchem.2019.00689489573Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion BatteriesHao Guo0Hao Guo1Yong Hu2Xiaoping Zhang3Rongliang Zhang4Dong Hou5Yulei Sui6Ling Wu7School of Iron and Steel, Soochow University, Suzhou, ChinaZhangjiagang Campus School of Metallurgical and Material Engineering, Jiangsu University of Science and Technology, Zhenjiang, ChinaSchool of Iron and Steel, Soochow University, Suzhou, ChinaSchool of Iron and Steel, Soochow University, Suzhou, ChinaZhangjiagang Campus School of Metallurgical and Material Engineering, Jiangsu University of Science and Technology, Zhenjiang, ChinaSchool of Iron and Steel, Soochow University, Suzhou, ChinaSchool of Iron and Steel, Soochow University, Suzhou, ChinaSchool of Iron and Steel, Soochow University, Suzhou, ChinaIn this paper, we report a facile one-step hydrothermal method to synthesize tetragonal Na3V2(PO4)2F3@C particles which are connected by carbon nanotubes (CNTs) networks, using water as hydrothermal solvents. In this strategy, the reduction and crystallization of materials are carried out in the hydrothermal process (180°C, 12 h), no additional heat treatment is required. The well-crystallized Na3V2(PO4)2F3 tetragonal grains (5–10 μm) are coated with amorphous nano-carbon and connected by highly conductive CNTs. The addition of CNTs can not only improve the conductivity of materials but also effectively inhibit the Na3V2(PO4)2F3 grains over growth. The Na3V2(PO4)2F3@C/CNTs composite possesses very flat charge/discharge platforms of 3.6 and 4.1 V. The sample exhibits an initial discharge specific capacity of 120.2 and 74.3 mAh g−1 at 0.1 and 10 C rate, respectively, and shows excellent cyclical stability. The composite owns excellent electrochemical performances owing to the three-dimensional highly conductive network which is co-constructed by the CNTs and nano-carbon coating layer.https://www.frontiersin.org/article/10.3389/fchem.2019.00689/fullNa-ion batteriescathode materialsNa3V2(PO4)2F3carbon nanotubeshydrothermal |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hao Guo Hao Guo Yong Hu Xiaoping Zhang Rongliang Zhang Dong Hou Yulei Sui Ling Wu |
spellingShingle |
Hao Guo Hao Guo Yong Hu Xiaoping Zhang Rongliang Zhang Dong Hou Yulei Sui Ling Wu Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion Batteries Frontiers in Chemistry Na-ion batteries cathode materials Na3V2(PO4)2F3 carbon nanotubes hydrothermal |
author_facet |
Hao Guo Hao Guo Yong Hu Xiaoping Zhang Rongliang Zhang Dong Hou Yulei Sui Ling Wu |
author_sort |
Hao Guo |
title |
Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion Batteries |
title_short |
Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion Batteries |
title_full |
Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion Batteries |
title_fullStr |
Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion Batteries |
title_full_unstemmed |
Facile One-Step Hydrothermal Synthesis of Na3V2(PO4)2F3@C/CNTs Tetragonal Micro-Particles as High Performance Cathode Material for Na-Ion Batteries |
title_sort |
facile one-step hydrothermal synthesis of na3v2(po4)2f3@c/cnts tetragonal micro-particles as high performance cathode material for na-ion batteries |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Chemistry |
issn |
2296-2646 |
publishDate |
2019-10-01 |
description |
In this paper, we report a facile one-step hydrothermal method to synthesize tetragonal Na3V2(PO4)2F3@C particles which are connected by carbon nanotubes (CNTs) networks, using water as hydrothermal solvents. In this strategy, the reduction and crystallization of materials are carried out in the hydrothermal process (180°C, 12 h), no additional heat treatment is required. The well-crystallized Na3V2(PO4)2F3 tetragonal grains (5–10 μm) are coated with amorphous nano-carbon and connected by highly conductive CNTs. The addition of CNTs can not only improve the conductivity of materials but also effectively inhibit the Na3V2(PO4)2F3 grains over growth. The Na3V2(PO4)2F3@C/CNTs composite possesses very flat charge/discharge platforms of 3.6 and 4.1 V. The sample exhibits an initial discharge specific capacity of 120.2 and 74.3 mAh g−1 at 0.1 and 10 C rate, respectively, and shows excellent cyclical stability. The composite owns excellent electrochemical performances owing to the three-dimensional highly conductive network which is co-constructed by the CNTs and nano-carbon coating layer. |
topic |
Na-ion batteries cathode materials Na3V2(PO4)2F3 carbon nanotubes hydrothermal |
url |
https://www.frontiersin.org/article/10.3389/fchem.2019.00689/full |
work_keys_str_mv |
AT haoguo facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries AT haoguo facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries AT yonghu facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries AT xiaopingzhang facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries AT rongliangzhang facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries AT donghou facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries AT yuleisui facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries AT lingwu facileonestephydrothermalsynthesisofna3v2po42f3ccntstetragonalmicroparticlesashighperformancecathodematerialfornaionbatteries |
_version_ |
1725398165185626112 |