Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors

It is desirable to develop an energy storage system with both high energy density and high power density along with excellent cycling stability to meet practical application requirements. Lithium-ion capacitors (LICs) are very promising due to the combined merits of the high power density of electro...

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Main Authors: Li, Shaohui, Chen, Jingwei, Gong, Xuefei, Wang, Jiangxin, Lee, Pooi See
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/87772
http://hdl.handle.net/10220/45509
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-877722023-07-14T15:52:05Z Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors Li, Shaohui Chen, Jingwei Gong, Xuefei Wang, Jiangxin Lee, Pooi See School of Materials Science & Engineering Lithium-ion Capacitors Anode Materials It is desirable to develop an energy storage system with both high energy density and high power density along with excellent cycling stability to meet practical application requirements. Lithium-ion capacitors (LICs) are very promising due to the combined merits of the high power density of electrochemical capacitors and the high energy density of batteries. However, the lack of high rate performance anode materials has been the major challenge of lithium-ion capacitors. Herein, we designed and synthesized holey graphene-wrapped porous TiNb24O62 as an anode material for lithium-ion capacitors. Pseudocapacitive storage behaviors with fast kinetics, high reversibility, and excellent cycling stability were demonstrated. The hybrid material can deliver a high capacity of 323 mAh g−1 at 0.1 A g−1, retaining 183 mAh g−1 at 10 A g−1. Coupled with a carbon nanosheet-based cathode, an LIC with an ultrahigh energy density of 103.9 Wh kg−1 was obtained, and it retained 28.9 Wh kg−1 even under a high power density of 17.9 kW kg−1 with a high capacity retention of 81.8% after 10,000 cycles. NRF (Natl Research Foundation, S’pore) Published version 2018-08-07T05:50:14Z 2019-12-06T16:49:11Z 2018-08-07T05:50:14Z 2019-12-06T16:49:11Z 2018 Journal Article Li, S., Chen, J., Gong, X., Wang, J., & Lee, P. S. (2018). Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors. NPG Asia Materials, 10(5), 406-416. https://hdl.handle.net/10356/87772 http://hdl.handle.net/10220/45509 10.1038/s41427-018-0042-5 en NPG Asia Materials © 2018 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. 11 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Lithium-ion Capacitors
Anode Materials
spellingShingle Lithium-ion Capacitors
Anode Materials
Li, Shaohui
Chen, Jingwei
Gong, Xuefei
Wang, Jiangxin
Lee, Pooi See
Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors
description It is desirable to develop an energy storage system with both high energy density and high power density along with excellent cycling stability to meet practical application requirements. Lithium-ion capacitors (LICs) are very promising due to the combined merits of the high power density of electrochemical capacitors and the high energy density of batteries. However, the lack of high rate performance anode materials has been the major challenge of lithium-ion capacitors. Herein, we designed and synthesized holey graphene-wrapped porous TiNb24O62 as an anode material for lithium-ion capacitors. Pseudocapacitive storage behaviors with fast kinetics, high reversibility, and excellent cycling stability were demonstrated. The hybrid material can deliver a high capacity of 323 mAh g−1 at 0.1 A g−1, retaining 183 mAh g−1 at 10 A g−1. Coupled with a carbon nanosheet-based cathode, an LIC with an ultrahigh energy density of 103.9 Wh kg−1 was obtained, and it retained 28.9 Wh kg−1 even under a high power density of 17.9 kW kg−1 with a high capacity retention of 81.8% after 10,000 cycles.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Li, Shaohui
Chen, Jingwei
Gong, Xuefei
Wang, Jiangxin
Lee, Pooi See
format Article
author Li, Shaohui
Chen, Jingwei
Gong, Xuefei
Wang, Jiangxin
Lee, Pooi See
author_sort Li, Shaohui
title Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors
title_short Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors
title_full Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors
title_fullStr Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors
title_full_unstemmed Holey graphene-wrapped porous TiNb24O62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors
title_sort holey graphene-wrapped porous tinb24o62 microparticles as high-performance intercalation pseudocapacitive anode materials for lithium-ion capacitors
publishDate 2018
url https://hdl.handle.net/10356/87772
http://hdl.handle.net/10220/45509
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