P‐Doped NiTe 2 with Te‐Vacancies in Lithium–Sulfur Batteries Prevents Shuttling and Promotes Polysulfide Conversion
East China University of Science and Technology · State Key Laboratory of Chemical Engineering · +4 more institutions
Abstract
Abstract Lithium–sulfur (Li–S) batteries have been hindered by the shuttle effect and sluggish polysulfide conversion kinetics. Here, a P‐doped nickel tellurium electrocatalyst with Te‐vacancies (P⊂NiTe 2− x ) anchored on maize‐straw carbon (MSC) nanosheets, served as a functional layer (MSC/P⊂NiTe 2− x ) on the separator of high‐performance Li–S batteries. The P⊂NiTe 2− x electrocatalyst enhanced the intrinsic conductivity, strengthened the chemical affinity for polysulfides, and accelerated sulfur redox conversion. The MSC nanosheets enabled NiTe 2 nanoparticle dispersion and Li + diffusion. In situ Raman and ex situ X‐ray absorption spectra confirmed that the MSC/P⊂NiTe 2− x restrained the shuttle effect…
Citation impact
- FWCI
- 29.36
- Percentile
- 100%
- References
- 60
Authors
11- WYWeiqi Yao
East China University of Science and Technology, State Key Laboratory of Chemical Engineering
- CTChengxiang Tian
National University of Singapore
- CYChao Yang
Helmholtz-Zentrum Berlin für Materialien und Energie
- JXJie Xu
East China University of Science and Technology, State Key Laboratory of Chemical Engineering
- YMYu‐Feng Meng
Shanghai Power Equipment Research Institute
Topics & keywords
- Polysulfide
- Materials science
- Electrocatalyst
- Sulfur
- Electrolyte
- Electrochemistry
- Redox
- Chemical engineering