Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries
In search for new anode materials with high-capacity, ultra-fast charging, and safety characteristics for lithium-ion batteries (LIBs), copper niobate (Cu0.1Nb1.9O4.85 nanorods and Cu0.1Nb1.9O4.85 nanoparticles) has been demonstrated through structure and defect engineering for the first time. The c...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
ELSEVIER SCIENCE SA
2023
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/90387 |
| _version_ | 1848765375943016448 |
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| author | Su, M. Li, M. He, K. Wan, T. Chen, X. Zhou, Y. Zhang, P. Dou, A. Xu, H. Lu, Chunsheng Wang, R. Chu, D. Liu, Y. |
| author_facet | Su, M. Li, M. He, K. Wan, T. Chen, X. Zhou, Y. Zhang, P. Dou, A. Xu, H. Lu, Chunsheng Wang, R. Chu, D. Liu, Y. |
| author_sort | Su, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In search for new anode materials with high-capacity, ultra-fast charging, and safety characteristics for lithium-ion batteries (LIBs), copper niobate (Cu0.1Nb1.9O4.85 nanorods and Cu0.1Nb1.9O4.85 nanoparticles) has been demonstrated through structure and defect engineering for the first time. The copper niobate material presents a dual-block shear ReO3 crystal structure with large lattice parameters and shallow-level oxygen vacancies. The structural and morphological features of Cu0.1Nb1.9O4.85 nanoparticles offer high structural stability, an open crystalline skeleton, and enhanced Li+-transfer kinetics. Significantly, DFT calculations demonstrate lower bandgap and Li adsorption/formation energies, leading to enhanced ion/electron conductivities of Cu0.1Nb1.9O4.85. In-situ XRD techniques reveal the high structural stability and good mechanic property of Cu0.1Nb1.9O4.85 nanoparticles. Consequently, Cu0.1Nb1.9O4.85 nanoparticles present significant pseudocapacitive behavior (as high as 90.3 % at 1.1 mV s−1) and outstanding electrochemical performances. The reversible capacity can reach 398 mAh g−1 at 0.1C. Cu0.1Nb1.9O4.85 nanoparticles also exhibit excellent cycle lifespan (capacity retention of 95.2 % over 250 cycles, 1C) and impressive rate performance (188 mAh g−1 at 20C and maintains 97.3 % upon 2500 cycles). Even at a high rate of 100C, it can still deliver a charge capacity of 45 mAh g−1. Moreover, the Cu0.1Nb1.9O4.85 nanoparticles‖LiNi1/3Co1/3Mn1/3O2 full cell delivers a capacity of 150.6 mAh g−1. These results reflect the huge application prospect of Cu0.1Nb1.9O4.85 nanoparticles for boosting Li+ storage. |
| first_indexed | 2025-11-14T11:34:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-90387 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:34:16Z |
| publishDate | 2023 |
| publisher | ELSEVIER SCIENCE SA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-903872023-03-01T08:07:51Z Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries Su, M. Li, M. He, K. Wan, T. Chen, X. Zhou, Y. Zhang, P. Dou, A. Xu, H. Lu, Chunsheng Wang, R. Chu, D. Liu, Y. Science & Technology Technology Engineering, Environmental Engineering, Chemical Engineering Lithium -ion batteries Dual -block Oxygen vacancies Electrochemical performance Cu0 1Nb1 85 LITHIUM INTERCALATION NANOWIRES COMPOSITES CAPABILITY NANOFIBERS NANOTUBES CAPACITY OXIDES In search for new anode materials with high-capacity, ultra-fast charging, and safety characteristics for lithium-ion batteries (LIBs), copper niobate (Cu0.1Nb1.9O4.85 nanorods and Cu0.1Nb1.9O4.85 nanoparticles) has been demonstrated through structure and defect engineering for the first time. The copper niobate material presents a dual-block shear ReO3 crystal structure with large lattice parameters and shallow-level oxygen vacancies. The structural and morphological features of Cu0.1Nb1.9O4.85 nanoparticles offer high structural stability, an open crystalline skeleton, and enhanced Li+-transfer kinetics. Significantly, DFT calculations demonstrate lower bandgap and Li adsorption/formation energies, leading to enhanced ion/electron conductivities of Cu0.1Nb1.9O4.85. In-situ XRD techniques reveal the high structural stability and good mechanic property of Cu0.1Nb1.9O4.85 nanoparticles. Consequently, Cu0.1Nb1.9O4.85 nanoparticles present significant pseudocapacitive behavior (as high as 90.3 % at 1.1 mV s−1) and outstanding electrochemical performances. The reversible capacity can reach 398 mAh g−1 at 0.1C. Cu0.1Nb1.9O4.85 nanoparticles also exhibit excellent cycle lifespan (capacity retention of 95.2 % over 250 cycles, 1C) and impressive rate performance (188 mAh g−1 at 20C and maintains 97.3 % upon 2500 cycles). Even at a high rate of 100C, it can still deliver a charge capacity of 45 mAh g−1. Moreover, the Cu0.1Nb1.9O4.85 nanoparticles‖LiNi1/3Co1/3Mn1/3O2 full cell delivers a capacity of 150.6 mAh g−1. These results reflect the huge application prospect of Cu0.1Nb1.9O4.85 nanoparticles for boosting Li+ storage. 2023 Journal Article http://hdl.handle.net/20.500.11937/90387 10.1016/j.cej.2022.140802 English ELSEVIER SCIENCE SA restricted |
| spellingShingle | Science & Technology Technology Engineering, Environmental Engineering, Chemical Engineering Lithium -ion batteries Dual -block Oxygen vacancies Electrochemical performance Cu0 1Nb1 85 LITHIUM INTERCALATION NANOWIRES COMPOSITES CAPABILITY NANOFIBERS NANOTUBES CAPACITY OXIDES Su, M. Li, M. He, K. Wan, T. Chen, X. Zhou, Y. Zhang, P. Dou, A. Xu, H. Lu, Chunsheng Wang, R. Chu, D. Liu, Y. Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries |
| title | Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries |
| title_full | Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries |
| title_fullStr | Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries |
| title_full_unstemmed | Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries |
| title_short | Structure and defect strategy towards high-performance copper niobate as anode for Li-ion batteries |
| title_sort | structure and defect strategy towards high-performance copper niobate as anode for li-ion batteries |
| topic | Science & Technology Technology Engineering, Environmental Engineering, Chemical Engineering Lithium -ion batteries Dual -block Oxygen vacancies Electrochemical performance Cu0 1Nb1 85 LITHIUM INTERCALATION NANOWIRES COMPOSITES CAPABILITY NANOFIBERS NANOTUBES CAPACITY OXIDES |
| url | http://hdl.handle.net/20.500.11937/90387 |