Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance
As a novel anode material for sodium-ion batteries, ultrafine Ni0.85Se nanoparticles encapsulated inside hollow porous carbon spheres (HPCS@Ni0.85Se) are prepared by impregnating Ni(NO3)2 into HPCSs, calcination and selenization, which is based on the strong capillary effect of HPCSs. Material chara...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/173307 |
| _version_ | 1826130139681914880 |
|---|---|
| author | Xi, J. C. Yuan, Yongfeng Cai, Gaoshen Wang, Bingxu Huang, Yizhong Guo, Shaoyi Du, Pingfan |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Xi, J. C. Yuan, Yongfeng Cai, Gaoshen Wang, Bingxu Huang, Yizhong Guo, Shaoyi Du, Pingfan |
| author_sort | Xi, J. C. |
| collection | NTU |
| description | As a novel anode material for sodium-ion batteries, ultrafine Ni0.85Se nanoparticles encapsulated inside hollow porous carbon spheres (HPCS@Ni0.85Se) are prepared by impregnating Ni(NO3)2 into HPCSs, calcination and selenization, which is based on the strong capillary effect of HPCSs. Material characterization reveals that Ni0.85Se nanoparticles with a diameter of 5–15 nm are evenly dispersed and intimately coupled to the internal wall of HPCSs, and the content of Ni0.85Se reaches 52.81%. HPCSs as unique reactors and Ni0.85Se carriers improve electronic conductivity of Ni0.85Se, facilitate electrolyte penetration and storage, buffer volume variation of Ni0.85Se, effectively confine Ni0.85Se during long-term cycles. Consequently, HPCS@Ni0.85Se exhibits excellent cycling durability and extraordinary rate capability. High reversible capacities of 341 mA h g−1 at 1 A g−1 after 1000 cycles, 280 mA h g−1 at 5 A g−1 after 2000 cycles and 305 mA h g−1 at 10 A g−1 after 540 cycles are achieved. The reaction kinetics and Na + storage mechanism are further analyzed by galvanostatic intermittent titration technique, cyclic voltammetry and electrochemical impedance spectra measurements. Ex-situ characterizations confirm outstanding structural stability of HPCS@Ni0.85Se. It is demonstrated that HPCS@Ni0.85Se is an excellent anode material, and this unique HPCS-based nanoencapsulation structure is an effective composite strategy for transition metal selenides. |
| first_indexed | 2024-10-01T07:51:38Z |
| format | Journal Article |
| id | ntu-10356/173307 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:51:38Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1733072024-01-23T07:57:36Z Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance Xi, J. C. Yuan, Yongfeng Cai, Gaoshen Wang, Bingxu Huang, Yizhong Guo, Shaoyi Du, Pingfan School of Materials Science and Engineering Engineering::Materials Sodium-Ion Batteries Hollow Porous Carbon Spheres As a novel anode material for sodium-ion batteries, ultrafine Ni0.85Se nanoparticles encapsulated inside hollow porous carbon spheres (HPCS@Ni0.85Se) are prepared by impregnating Ni(NO3)2 into HPCSs, calcination and selenization, which is based on the strong capillary effect of HPCSs. Material characterization reveals that Ni0.85Se nanoparticles with a diameter of 5–15 nm are evenly dispersed and intimately coupled to the internal wall of HPCSs, and the content of Ni0.85Se reaches 52.81%. HPCSs as unique reactors and Ni0.85Se carriers improve electronic conductivity of Ni0.85Se, facilitate electrolyte penetration and storage, buffer volume variation of Ni0.85Se, effectively confine Ni0.85Se during long-term cycles. Consequently, HPCS@Ni0.85Se exhibits excellent cycling durability and extraordinary rate capability. High reversible capacities of 341 mA h g−1 at 1 A g−1 after 1000 cycles, 280 mA h g−1 at 5 A g−1 after 2000 cycles and 305 mA h g−1 at 10 A g−1 after 540 cycles are achieved. The reaction kinetics and Na + storage mechanism are further analyzed by galvanostatic intermittent titration technique, cyclic voltammetry and electrochemical impedance spectra measurements. Ex-situ characterizations confirm outstanding structural stability of HPCS@Ni0.85Se. It is demonstrated that HPCS@Ni0.85Se is an excellent anode material, and this unique HPCS-based nanoencapsulation structure is an effective composite strategy for transition metal selenides. This work was supported by Major project of Changshan Research Institute, Zhejiang Sci-Tech University (No.22020237-J), China Scholarship Council (No. 202008330185) and Natural Science Foundation of Zhejiang Province, China (No. LY21E020011, LY21F040008). 2024-01-23T07:57:36Z 2024-01-23T07:57:36Z 2023 Journal Article Xi, J. C., Yuan, Y., Cai, G., Wang, B., Huang, Y., Guo, S. & Du, P. (2023). Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance. Journal of Power Sources, 587, 233713-. https://dx.doi.org/10.1016/j.jpowsour.2023.233713 0378-7753 https://hdl.handle.net/10356/173307 10.1016/j.jpowsour.2023.233713 2-s2.0-85173962416 587 233713 en Journal of Power Sources © 2023 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Materials Sodium-Ion Batteries Hollow Porous Carbon Spheres Xi, J. C. Yuan, Yongfeng Cai, Gaoshen Wang, Bingxu Huang, Yizhong Guo, Shaoyi Du, Pingfan Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance |
| title | Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance |
| title_full | Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance |
| title_fullStr | Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance |
| title_full_unstemmed | Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance |
| title_short | Ultrafine Ni₀.₈₅Se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent Na storage performance |
| title_sort | ultrafine ni₀ ₈₅se nanoparticles encapsulated inside hollow porous carbon spheres and their excellent na storage performance |
| topic | Engineering::Materials Sodium-Ion Batteries Hollow Porous Carbon Spheres |
| url | https://hdl.handle.net/10356/173307 |
| work_keys_str_mv | AT xijc ultrafineni085senanoparticlesencapsulatedinsidehollowporouscarbonspheresandtheirexcellentnastorageperformance AT yuanyongfeng ultrafineni085senanoparticlesencapsulatedinsidehollowporouscarbonspheresandtheirexcellentnastorageperformance AT caigaoshen ultrafineni085senanoparticlesencapsulatedinsidehollowporouscarbonspheresandtheirexcellentnastorageperformance AT wangbingxu ultrafineni085senanoparticlesencapsulatedinsidehollowporouscarbonspheresandtheirexcellentnastorageperformance AT huangyizhong ultrafineni085senanoparticlesencapsulatedinsidehollowporouscarbonspheresandtheirexcellentnastorageperformance AT guoshaoyi ultrafineni085senanoparticlesencapsulatedinsidehollowporouscarbonspheresandtheirexcellentnastorageperformance AT dupingfan ultrafineni085senanoparticlesencapsulatedinsidehollowporouscarbonspheresandtheirexcellentnastorageperformance |