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Article: Construction of Hierarchical Flower‐Shaped (NH4)2V3O8/rGO with Enhanced Zinc Storage Performance
Title | Construction of Hierarchical Flower‐Shaped (NH4)2V3O8/rGO with Enhanced Zinc Storage Performance |
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Authors | |
Issue Date | 2021 |
Publisher | Wiley-VCH GmbH. |
Citation | ChemElecrtoChem, 2021, v. 8, p. 4618-4624 How to Cite? |
Abstract | Vanadium-based cathode materials are being widely investigated in aqueous zinc-ion batteries (ZIBs) due to their high specific capacity. However, poor cycling stability and low conductivity limit their practical applications. Herein, the hierarchical flower-shaped (NH4)2V3O8/reduced graphene oxide (denoted as NVO/rGO) composite is designed to harvest high-efficiency Zn storage. Benefiting from the stable layered structure of NVO, the prominent pseudocapacitance, and excellent conductivity of rGO, the NVO/rGO composite exhibits a high specific capacity of 375.3 mAh g−1 at 0.2 A g−1, excellent cycling stability of 265.0 mAh g−1 after 3700 cycles at 5.0 A g−1 (capacity retention over 95.3 %), and outstanding rate performance of 263.9 mAh g−1 at 10.0 A g−1 by using traditional coin cells. To further verify the practicability of the NVO/rGO cathode, flexible electrode and xanthan gum electrolyte are adopted to assemble quasi-solid-state ZIBs, which exhibit a great specific capacity of 185.0 mAh g−1 at 0.5 A g−1 and good stability under different bending angles with an impressive capacity retention of 92.2 % after cycling. This study illustrates that hierarchical flower-shaped NVO/rGO has a promising potential as aqueous or quasi-solid-state ZIBs cathode and improves the application of vanadium-based materials. |
Persistent Identifier | http://hdl.handle.net/10722/319997 |
DC Field | Value | Language |
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dc.contributor.author | Pan, Z.K. | - |
dc.contributor.author | Ru, Q. | - |
dc.contributor.author | Zheng, M.H. | - |
dc.contributor.author | Xu, W.G. | - |
dc.contributor.author | Wu, J.L. | - |
dc.contributor.author | Zhang, J. | - |
dc.contributor.author | Ling, FCC | - |
dc.contributor.author | Wie, L. | - |
dc.date.accessioned | 2022-10-14T05:23:34Z | - |
dc.date.available | 2022-10-14T05:23:34Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | ChemElecrtoChem, 2021, v. 8, p. 4618-4624 | - |
dc.identifier.uri | http://hdl.handle.net/10722/319997 | - |
dc.description.abstract | Vanadium-based cathode materials are being widely investigated in aqueous zinc-ion batteries (ZIBs) due to their high specific capacity. However, poor cycling stability and low conductivity limit their practical applications. Herein, the hierarchical flower-shaped (NH4)2V3O8/reduced graphene oxide (denoted as NVO/rGO) composite is designed to harvest high-efficiency Zn storage. Benefiting from the stable layered structure of NVO, the prominent pseudocapacitance, and excellent conductivity of rGO, the NVO/rGO composite exhibits a high specific capacity of 375.3 mAh g−1 at 0.2 A g−1, excellent cycling stability of 265.0 mAh g−1 after 3700 cycles at 5.0 A g−1 (capacity retention over 95.3 %), and outstanding rate performance of 263.9 mAh g−1 at 10.0 A g−1 by using traditional coin cells. To further verify the practicability of the NVO/rGO cathode, flexible electrode and xanthan gum electrolyte are adopted to assemble quasi-solid-state ZIBs, which exhibit a great specific capacity of 185.0 mAh g−1 at 0.5 A g−1 and good stability under different bending angles with an impressive capacity retention of 92.2 % after cycling. This study illustrates that hierarchical flower-shaped NVO/rGO has a promising potential as aqueous or quasi-solid-state ZIBs cathode and improves the application of vanadium-based materials. | - |
dc.language | eng | - |
dc.publisher | Wiley-VCH GmbH. | - |
dc.relation.ispartof | ChemElecrtoChem | - |
dc.title | Construction of Hierarchical Flower‐Shaped (NH4)2V3O8/rGO with Enhanced Zinc Storage Performance | - |
dc.type | Article | - |
dc.identifier.email | Ling, FCC: ccling@hkucc.hku.hk | - |
dc.identifier.authority | Ling, FCC=rp00747 | - |
dc.identifier.doi | 10.1002/celc.202101245 | - |
dc.identifier.hkuros | 339366 | - |
dc.identifier.volume | 8 | - |
dc.identifier.spage | 4618 | - |
dc.identifier.epage | 4624 | - |
dc.publisher.place | Weinheim | - |