Abstract
New hierarchical hollow SiO2 spheres (HHSs) decorated with metal nanoparticles (i.e., Co, Co-HHS) were designed using an in situ self-assembly approach. The Co nanoparticles were found to have a catalytic effect on (de-)lithiation of SiO2 and hence in storing lithium. Then, an extremely high capacity of 932 mA h g-1 and good cycling stability for more than 1000 cycles were demonstrated in the corresponding lithium battery. In addition, the lithium-ion full batteries of the Co-HHS versus lithium layered oxide cathode (e.g., LiNi1/3Co1/3Mn1/3O2, NCM333) were introduced and showed good performance, demonstrating the promising application of the Co-HHS, in particular for pursuing high-energy-density batteries. This journal is
Original language | English (US) |
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Pages (from-to) | 12306-12313 |
Number of pages | 8 |
Journal | Journal of Materials Chemistry A |
Volume | 8 |
Issue number | 25 |
DOIs | |
State | Published - Jun 2 2020 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledgements: This work is supported by the National Natural Science Foundation of China (21978281, 21975250) and the National Key R&D Program of China (SQ2017YFGH001474). The authors also thank the Independent Research Project of the State Key Laboratory of Rare Earth Resources Utilization (110005R086), Changchun Institute of Applied Chemistry, Chinese Academy of Sciences.