High-Entropy Conversion-Alloying Anode Material for Advanced Potassium-Ion Batteries
Northwestern Polytechnical University · University of Shanghai for Science and Technology · +1 more institution
Abstract
Conversion-alloying dual-mechanism materials are considered as promising anodes for potassium-ion batteries (KIBs) owing to multielectron transfer with high theoretical specific capacity and low operating voltage, whereas large lattice strain and sluggish kinetics hinder the rate and cyclability ability. Herein, a high-entropy telluride (HET, Sb1.4Bi0.2Sn0.2Co0.1Mn0.1Te3) is proposed as an advanced anode material for KIBs. The disordered coordination environment originated from high-entropy composition assists HET to eliminate band gap, enhance K-ion adsorption capability, and lower K-ion migration barrier, thereby contributing superior electrochemical dynamics behavior. It is verified that HET stores K-ion…
Citation impact
- FWCI
- 34.61
- Percentile
- 100%
- References
- 58
Authors
7Topics & keywords
- Anode
- Materials science
- Potassium
- Ion
- Nanoarchitectures for lithium-ion batteries
- Nanotechnology
- Chemical engineering
- Metallurgy