Abstract
To develop high-performance anode materials of lithium ion batteries (LIBs) for practical high energy application, a grain boundaries enriched hierarchically mesoporous MnO/C microsphere composite has been fabricated by an in-situ carbonization process. The mesoporous MnO/C microsphere is constructed by abundant grains and grain boundaries that are uniformly embedded in a carbon matrix. Such unique nanoarchitecture exhibits high tap density and structural stability, and provides 3D continuous transport pathways for electrons and Li-ions, enabling high electrochemical stability and improved lithium storage kinetics. As a consequence, the mesoporous MnO/C electrode delivers ever-increasing specific capacity (1200 mAh g−1 after 100 cycles at 100 mA g−1) and excellent rate capability (588 mAh g−1 at 2 A g−1). Such superior lithium storage performance suggests that the hierarchically mesoporous MnO/C microsphere electrode should be one of the most promising anode materials for electric vehicle and grid energy storage application.
Original language | English |
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Pages (from-to) | 561-569 |
Number of pages | 9 |
Journal | Electrochimica Acta |
Volume | 222 |
DOIs | |
Publication status | Published - 20 Dec 2016 |
Keywords
- grain boundary
- hierarchically mesoporous microsphere
- In-situ carbonization
- lithium ion battery
- MnO/C composite
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Physical Chemistry and characterization(PC2)
Johan Wouters (Manager) & Carmela Aprile (Manager)
Technological Platform Physical Chemistry and characterizationFacility/equipment: Technological Platform