Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors
Sodium‐ion capacitors (SICs) have attracted extensive attentions due to their integration of high‐energy battery and high‐power capacitor as well as the naturally abundant sodium resource. A major challenge of current SICs is to achieve high rate performance and long‐cycle stability of the battery‐t...
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sg-ntu-dr.10356-1464572023-02-28T19:54:20Z Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors Wang, Huanwen Xu, Dongming Qiu, Ruyun Tang, Shasha Li, Shuai Wang, Rui He, Beibei Gong, Yansheng Fan, Hong Jin School of Physical and Mathematical Sciences Engineering::Materials Array Electrodes Nanobelts Sodium‐ion capacitors (SICs) have attracted extensive attentions due to their integration of high‐energy battery and high‐power capacitor as well as the naturally abundant sodium resource. A major challenge of current SICs is to achieve high rate performance and long‐cycle stability of the battery‐type anode. Herein, fast sodium storage is achieved from sodium titanate (Na2Ti3O7) arrays that are uniformly grown on highly conductive carbon nanofiber networks with a high mass loading of 5.6 mg cm−2. Nanowires and nanobelts of Na2Ti3O7 are both synthesized, and their Na‐ion storage properties are compared. Both arrays can be used as binder‐free and flexible electrodes, but the nanobelts exhibit higher specific capacity and better rate performance than the nanowires with similar mass loading. The difference between two types of nanostructures is ascribed to their different kinetics in ion/charge transport, according to the electrochemical impedance data. SIC full devices consisting of the Na2Ti3O7 nanobelt anode and biomass‐derived porous carbon cathode are constructed, which show pretty high specific energy and power performance. Accepted version Financial support by National Natural Science Foundation of China (NSFC) Grants (51702295), Zhejiang Provincial Natural Science Foundation of China (LY18B030004), Guangdong Provincial Key Laboratory of Energy Materials for Electric Power (No. 2018B030322001) and the Sino-Singapore International Joint Research Institute (JRI, Project Number: 204-A018002) are appreciated. 2021-02-18T00:48:52Z 2021-02-18T00:48:52Z 2021 Journal Article Wang, H., Xu, D., Qiu, R., Tang, S., Li, S., Wang, R., ... Fan, H. J. (2021). Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors. Small Structures, 2(2), 2000073-. doi:10.1002/sstr.202000073 2688-4062 https://hdl.handle.net/10356/146457 10.1002/sstr.202000073 2 2 2000073 en Small Structures This is the peer reviewed version of the following article: Wang, H., Xu, D., Qiu, R., Tang, S., Li, S., Wang, R., ... Fan, H. J. (2021). Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors. Small Structures, 2(2), 2000073-. doi:10.1002/sstr.202000073, which has been published in final form at https://doi.org/10.1002/sstr.202000073. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
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Engineering::Materials Array Electrodes Nanobelts Wang, Huanwen Xu, Dongming Qiu, Ruyun Tang, Shasha Li, Shuai Wang, Rui He, Beibei Gong, Yansheng Fan, Hong Jin Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors |
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Sodium‐ion capacitors (SICs) have attracted extensive attentions due to their integration of high‐energy battery and high‐power capacitor as well as the naturally abundant sodium resource. A major challenge of current SICs is to achieve high rate performance and long‐cycle stability of the battery‐type anode. Herein, fast sodium storage is achieved from sodium titanate (Na2Ti3O7) arrays that are uniformly grown on highly conductive carbon nanofiber networks with a high mass loading of 5.6 mg cm−2. Nanowires and nanobelts of Na2Ti3O7 are both synthesized, and their Na‐ion storage properties are compared. Both arrays can be used as binder‐free and flexible electrodes, but the nanobelts exhibit higher specific capacity and better rate performance than the nanowires with similar mass loading. The difference between two types of nanostructures is ascribed to their different kinetics in ion/charge transport, according to the electrochemical impedance data. SIC full devices consisting of the Na2Ti3O7 nanobelt anode and biomass‐derived porous carbon cathode are constructed, which show pretty high specific energy and power performance. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Wang, Huanwen Xu, Dongming Qiu, Ruyun Tang, Shasha Li, Shuai Wang, Rui He, Beibei Gong, Yansheng Fan, Hong Jin |
format |
Article |
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Wang, Huanwen Xu, Dongming Qiu, Ruyun Tang, Shasha Li, Shuai Wang, Rui He, Beibei Gong, Yansheng Fan, Hong Jin |
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Wang, Huanwen |
title |
Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors |
title_short |
Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors |
title_full |
Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors |
title_fullStr |
Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors |
title_full_unstemmed |
Aligned arrays of Na2Ti3O7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors |
title_sort |
aligned arrays of na2ti3o7 nanobelts and nanowires on carbon nanofiber as high‐rate and long‐cycling anodes for sodium‐ion hybrid capacitors |
publishDate |
2021 |
url |
https://hdl.handle.net/10356/146457 |
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1759854078024744960 |