Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage
Abstract Recently, abundant resources, low-cost sodium-ion batteries are deemed to the new-generation battery in the field of large-scale energy storage. Nevertheless, poor active reaction dynamics, dissolution of intermediates and electrolyte matching problems are significant challenges that need t...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-01-01
|
| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40820-020-00562-7 |
| id |
doaj-a160c0a86fed4548ac3ca3698d5d01eb |
|---|---|
| record_format |
Article |
| spelling |
doaj-a160c0a86fed4548ac3ca3698d5d01eb2021-01-10T12:56:40ZengSpringerOpenNano-Micro Letters2311-67062150-55512021-01-0113111410.1007/s40820-020-00562-7Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium StorageEnze Xu0Pengcheng Li1Junjie Quan2Hanwen Zhu3Li Wang4Yajing Chang5Zhenjie Sun6Lei Chen7Dabin Yu8Yang Jiang9School of Materials Science and Engineering, Hefei University of TechnologySchool of Materials Science and Engineering, Hefei University of TechnologySchool of Materials Science and Engineering, Hefei University of TechnologySchool of Materials Science and Engineering, Hefei University of TechnologySchool of Chemistry and Chemical Engineering, Hefei University of TechnologyState Key Laboratory of Pulsed Power Laser Technology, National University of Defense TechnologySchool of Materials Science and Engineering, Hefei University of TechnologySchool of Materials Science and Engineering, Hefei University of TechnologyState Key Laboratory of Pulsed Power Laser Technology, National University of Defense TechnologySchool of Materials Science and Engineering, Hefei University of TechnologyAbstract Recently, abundant resources, low-cost sodium-ion batteries are deemed to the new-generation battery in the field of large-scale energy storage. Nevertheless, poor active reaction dynamics, dissolution of intermediates and electrolyte matching problems are significant challenges that need to be solved. Herein, dimensional gradient structure of sheet–tube–dots is constructed with CoSe2@CNTs–MXene. Gradient structure is conducive to fast migration of electrons and ions with the association of ether electrolyte. For half-cell, CoSe2@CNTs–MXene exhibits high initial coulomb efficiency (81.7%) and excellent cycling performance (400 mAh g−1 cycling for 200 times in 2 A g−1). Phase transformation pathway from crystalline CoSe2–Na2Se with Co and then amorphous CoSe2 in the discharge/charge process is also explored by in situ X-ray diffraction. Density functional theory study discloses the CoSe2@CNTs–MXene in ether electrolyte system which contributes to stable sodium storage performance owing to the strong adsorption force from hierarchical structure and weak interaction between electrolyte and electrode interface. For full cell, CoSe2@CNTs–MXene//Na3V2 (PO4)3/C full battery can also afford a competitively reversible capacity of 280 mAh g−1 over 50 cycles. Concisely, profiting from dimensional gradient structure and matched electrolyte of CoSe2@CNTs–MXene hold great application potential for stable sodium storage.https://doi.org/10.1007/s40820-020-00562-7CoSe2@CNTs–MXeneEther electrolyteIn situ XRDDFT calculationSodium-ion full battery |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Enze Xu Pengcheng Li Junjie Quan Hanwen Zhu Li Wang Yajing Chang Zhenjie Sun Lei Chen Dabin Yu Yang Jiang |
| spellingShingle |
Enze Xu Pengcheng Li Junjie Quan Hanwen Zhu Li Wang Yajing Chang Zhenjie Sun Lei Chen Dabin Yu Yang Jiang Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage Nano-Micro Letters CoSe2@CNTs–MXene Ether electrolyte In situ XRD DFT calculation Sodium-ion full battery |
| author_facet |
Enze Xu Pengcheng Li Junjie Quan Hanwen Zhu Li Wang Yajing Chang Zhenjie Sun Lei Chen Dabin Yu Yang Jiang |
| author_sort |
Enze Xu |
| title |
Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage |
| title_short |
Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage |
| title_full |
Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage |
| title_fullStr |
Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage |
| title_full_unstemmed |
Dimensional Gradient Structure of CoSe2@CNTs–MXene Anode Assisted by Ether for High-Capacity, Stable Sodium Storage |
| title_sort |
dimensional gradient structure of cose2@cnts–mxene anode assisted by ether for high-capacity, stable sodium storage |
| publisher |
SpringerOpen |
| series |
Nano-Micro Letters |
| issn |
2311-6706 2150-5551 |
| publishDate |
2021-01-01 |
| description |
Abstract Recently, abundant resources, low-cost sodium-ion batteries are deemed to the new-generation battery in the field of large-scale energy storage. Nevertheless, poor active reaction dynamics, dissolution of intermediates and electrolyte matching problems are significant challenges that need to be solved. Herein, dimensional gradient structure of sheet–tube–dots is constructed with CoSe2@CNTs–MXene. Gradient structure is conducive to fast migration of electrons and ions with the association of ether electrolyte. For half-cell, CoSe2@CNTs–MXene exhibits high initial coulomb efficiency (81.7%) and excellent cycling performance (400 mAh g−1 cycling for 200 times in 2 A g−1). Phase transformation pathway from crystalline CoSe2–Na2Se with Co and then amorphous CoSe2 in the discharge/charge process is also explored by in situ X-ray diffraction. Density functional theory study discloses the CoSe2@CNTs–MXene in ether electrolyte system which contributes to stable sodium storage performance owing to the strong adsorption force from hierarchical structure and weak interaction between electrolyte and electrode interface. For full cell, CoSe2@CNTs–MXene//Na3V2 (PO4)3/C full battery can also afford a competitively reversible capacity of 280 mAh g−1 over 50 cycles. Concisely, profiting from dimensional gradient structure and matched electrolyte of CoSe2@CNTs–MXene hold great application potential for stable sodium storage. |
| topic |
CoSe2@CNTs–MXene Ether electrolyte In situ XRD DFT calculation Sodium-ion full battery |
| url |
https://doi.org/10.1007/s40820-020-00562-7 |
| work_keys_str_mv |
AT enzexu dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT pengchengli dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT junjiequan dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT hanwenzhu dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT liwang dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT yajingchang dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT zhenjiesun dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT leichen dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT dabinyu dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage AT yangjiang dimensionalgradientstructureofcose2cntsmxeneanodeassistedbyetherforhighcapacitystablesodiumstorage |
| _version_ |
1724342007499849728 |