Journal
ACS ENERGY LETTERS
Volume 3, Issue 2, Pages 420-427Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.7b01249
Keywords
-
Categories
Funding
- National Natural Science Fund of China [11704365, 21671183, 21521001, 21771169, GG2060190212]
- Fundamental Research Funds for the Central Universities [WK2060190053, WK2060190074, WK2060190081]
- USTC start-up funding
- Recruitment Program of Global Expert
Ask authors/readers for more resources
Fundamentally altering the essential properties of a material itself is always of great interest but challenging as well. Herein, we demonstrate a simple tellurium doping method to intrinsically reshape the electronic properties of the sulfur and manipulate the kinetics of Li-S chemistry for improving the performance of Li-S batteries. DFT calculation indicates that Te doping can effectively facilitate the lithiation/delithiation reactions and lower the lithium ion diffusion energy barrier in Li2S. Additionally, electrochemical studies prove that the reaction kinetics of Li-S chemistry and cycling performance of Li-S batteries have been significantly improved with Te dopants. An exceptional specific capacity of-similar to 656 mA h g(-1) and a high Coulombic efficiency of similar to 99% have been achieved at 5 A g(-1) even after 1000 cycles. More importantly, the capability to manipulate the intrinsic properties of materials and explore the synergistic effects between conventional strategies and element doping provides new avenues for Li-S batteries and beyond.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available