Journal
NANO LETTERS
Volume 12, Issue 2, Pages 904-909Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl203967r
Keywords
Li-ion battery; Si anode; solid-electrolyte interphase (SEI)
Categories
Funding
- Office of Vehicle Technologies of the U.S. Department of Energy [DE-AC02-05CH11231]
- Batteries for Advanced Transportation Technologies (BATT) Program [6951379]
- Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering through SLAC National Accelerator Laboratory LDRD [DE-AC02-76SF00515]
Ask authors/readers for more resources
Silicon is a promising high-capacity anode material for lithium-ion batteries yet attaining long cycle life remains a significant challenge due to pulverization of the silicon and unstable solid-electrolyte interphase (SEI) formation during the electrochemical cycles. Despite significant advances in nanostructured Si electrodes, challenges including short cycle life and scalability hinder its widespread implementation. To address these challenges, we engineered an empty space between Si nanopartides by encapsulating them in hollow carbon tubes. The synthesis process used low-cost Si nanoparticles and electrospinning methods, both of which can be easily scaled. The empty space around the Si nanoparticles allowed the electrode to successfully overcome these problems Our anode demonstrated a high gravimetric capacity (similar to 1000 mAh/g based on the total mass) and long cycle life (200 cycles with 90% capacity retention).
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