Abstract
High-energy and high-power Li-ion batteries have been intensively pursued as power sources in electronic vehicles and renewable energy storage systems in smart grids. With this purpose, developing high-performance cathode materials is urgently needed. Here we report an easy and versatile strategy to fabricate high-rate and cycling-stable hierarchical sphered cathode Li1.2Ni0.13Mn0.54Co0.13O2, by using an ionic interfusion method. The sphere-shaped hierarchical cathode is assembled with primary nanoplates with enhanced growth of nanocrystal planes in favor of Li+ intercalation/deintercalation, such as (010), (100), and (110) planes. This material with such unique structural features exhibits outstanding rate capability, cyclability, and high discharge capacities, achieving around 70% (175 mAh g-1) of the capacity at 0.1 C rate within about 2.1 min of ultrafast charging. Such cathode is feasible to construct high-energy and high-power Li-ion batteries.
| Original language | English |
|---|---|
| Pages (from-to) | 656-661 |
| Number of pages | 6 |
| Journal | Nano Letters |
| Volume | 15 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 14 Jan 2015 |
Keywords
- Hierarchical spheres
- Li-ion batteries
- cycling-stable
- electrochemical active planes
- high-rate
- lithium-rich cathode