4.6 Article

High-loaded nanobelt-array/nanobelt-microsphere multilayer Li4Ti5O12 self-supported on Ti foils for high-performance lithium ion battery

Journal

ELECTROCHIMICA ACTA
Volume 419, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.140407

Keywords

Multilayer; High-load; Li4Ti5O12; N-doping; Lithium-ion battery

Funding

  1. National Natural Science Foundation of China [52072251]
  2. Program for New Century Excellent Talents in University [NCET100605]
  3. Sichuan Science and Technology Program [2018GZ0463]

Ask authors/readers for more resources

A high-loaded porous nanobelt-constructed multilayer hierarchical Li4Ti5O12 nanostructure and N-doped NBMH-LTO electrode were successfully prepared via hydrothermal and vapor-solid reaction processes. These materials exhibited excellent performance in lithium ion batteries, making them promising electrode materials.
A high-loaded porous nanobelt-constructed multilayer hierarchical Li4Ti5O12 nanostructure (NBMH-LTO) is prepared via a hydrothermal process with the presence of NaF. This novel NBMH-LTO contains a nanobelt array layer directly grown on the Ti substrate and upper hollow microsphere-layers consisting of nanobelts. The selfstanding Li4Ti5O12 nanobelts on conductive Ti foil can be directly used as anode in flexible and foldable lithium ion batteries without using conductive additives or binders. Furthermore, N-doped NBMH-LTO (NBMH-NLTO) electrode is successfully obtained via a simple vapor-solid reaction process between NBMH-LTO and NH3, and it exhibits a high areal capacity of 0.71 mAh cm(-2) at 0.1 mA cm(-2 )and excellent rate/cyclic performance. Additionally, the NBMH-NLTO electrode also displays excellent performance at low temperature, after 100 cycles at -20 degrees C (1 mA cm(-2)), the capacity retention rate can reach to 98.6%. The enhanced performance of NBMH-NLTO can be attributed to its high active materials load benefited from the new synthesis strategy, good electronic connection profited from the unique 3D network of nanbelts, and the further improved electron conductivity due to the presence of Ti(3+)in nanobelts.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available