Journal
ENERGY TECHNOLOGY
Volume 8, Issue 3, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.201901262
Keywords
anode materials; Li-ion batteries; Na-ion batteries; natural sepiolite; TiO2
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Funding
- National Natural Science Foundation of China [51002128]
- Scientific Research Foundation of Hunan Provincial Education Department [17A205]
- Natural Science Foundation of Hunan Province [2018JJ2393]
- Graduate Innovation Foundation of Hunan Province [2018XTUXJ049, 201810530017]
- Postgraduate Education Reform Project of Hunan Province
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Natural sepiolite is widely used as an inorganic template to prepare functional nanomaterials. Herein, raw sepiolite and ultrafine TiO2 nanocrystals-decorated sepiolite nanofibers are fabricated by a hydrothermal reaction followed by an annealing process. For Li-storage, the TiO2/sepiolite composites exhibit higher specific capacity and a longer lifespan than raw sepiolite. At a current density of 0.3 A g(-1), the optimized TiO2/sepiolite composites deliver a discharge capacity of 1811 and 618 mAh g(-1) at 1st and 300th cycle, respectively. In addition, the composites show a very stable specific capacity of 100 mAh g(-1) at a current density of 0.1 A g(-1) for Na-storage up to 100 cycles.
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