ACS Applied Nano Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 16, 2024

With the increasing demand for high-performance energy storage devices, potassium-ion batteries (PIBs) have attracted significant interest due to their large capacity, affordability, and high density. However, radius of potassium ions necessitates strong structural stability in anode material sustain long-term cycling. In this work, a self-templated nitrogen/sulfur co-doping carbon was designed synthesized using thiourea as both doping source template. This approach facilitated incorporation nitrogen sulfur heteroatoms while creating highly ordered structure during carbonization process. The experimental results demonstrated that additional S not only elevated N level provide more K-storage sites, which improved specific but also increased stacking order improve PIBs. N/S encouraged formation high-ionic conductivity SEI film fast interfacial kinetics. prepared its great potential an PIBs by delivering capacities 327 mAh g–1 at 50 mA maintaining excellent cycling stability, achieved 179 after long 2000 cycles current density 1000 g–1. study provided some good ideas methods development materials

Язык: Английский