Abstract
We report a binder-free three-dimensional (3D) macro-mesoporous electrode architecture via self-assembly of 3 nm NiO nanodots on macroporous nickel foam for high performance supercapacitor-like lithium battery. This electrode architecture provides a hierarchically 3D macro-mesoporous electrolyte-filled network that simultaneously enables rapid ion transfer and ultra-short solid-phase ion diffusion. Benefitting from the structural superiority owing to the interconnected porous hierarchy, the electrode exhibits supercapacitor-like high rate capabilities with high lithium battery capacities during the discharge-charge process: a very high capacity of 518 mA h g-1 at an ultrahigh current density of 50 A g-1. It exceeds at least ~10 times than that of the state-of-the-art graphite anode, which shows only ~50 mA h g-1 at ~2 to 3 A g-1 as anode for Li-ion batteries. The preparation method of 3D interconnected hierarchically macro-mesoporous electrode presented here can provide an efficient new binder-free electrode technique towards the development of high-performance supercapacitor-like Li-ion batteries.
Original language | English |
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Pages (from-to) | 269-277 |
Number of pages | 9 |
Journal | Nano Energy |
Volume | 22 |
DOIs | |
Publication status | Published - 1 Apr 2016 |
Keywords
- Lithium-ion battery
- Nanodots
- NiO
- Self-assembly
- Supercapacitor
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Physical Chemistry and characterization(PC2)
Johan Wouters (Manager) & Carmela Aprile (Manager)
Technological Platform Physical Chemistry and characterizationFacility/equipment: Technological Platform