Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 33, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202103067
Keywords
anodes; ball-cactus-like Bi; high-rate properties; N-riched carbon-nanonetworks; potassium-ion batteries
Categories
Funding
- National Natural Science Foundation of China [51631004]
- Project of Talent Development in Jilin Province
- Natural Science Foundation of Jilin Province [20200201073JC]
- Program for JLU Science and Technology Innovative Research Team [2017TD-09]
- Fundamental Research Funds for the Central Universities
Ask authors/readers for more resources
The Bi NSs/NCNs as an anode demonstrates exceptional rate capabilities (489.3 mAh g(-1) at 50 A g(-1)) and long cycling stability (457.8 mAh g(-1) at 10 A g(-1) after 2000 cycles), surpassing all reported PIB anode materials. Such outstanding performance is mainly attributed to the stable solid-electrolyte interface formed in the glyme-based electrolyte and the unique interconnected porous nanostructure, both contributing to fast kinetics and high pseudocapacitive contributions during cycling.
The potassium-ion battery (PIB) has emerged as a promising alternative to lithium-ion batteries. The major challenges confronted by PIB anodes lie in sluggish kinetics and poor cycling stability owing to the inherent large K+ size. Here, a hybrid of ball-cactus-like Bi nanospheres embedded in 3D N-riched carbon nanonetworks (Bi NSs/NCNs) is designed and synthesized by electrospinning. As an anode, Bi NSs/NCNs exhibits an unprecedented rate (489.3 mAh g(-1) at 50 A g(-1)) and long-cycling performance (457.8 mAh g(-1) at 10 A g(-1) after 2000 cycles), outperforming all reported PIB anode materials. Such outstanding performance mainly originates from the stable solid-electrolyte interface formed in the glyme-based electrolyte and the unique interconnected porous nanostructure, both of which contribute to fast kinetics and high pseudocapacitive contributions upon cycling.
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