Nano Energy
Nano Energy
5 years ago

A novel border-rich Prussian blue synthetized by inhibitor control as cathode for sodium ion batteries

A novel border-rich Prussian blue synthetized by inhibitor control as cathode for sodium ion batteries
The performance of a Prussian blue cathode is affected by its structure and stability. Through the inhibitor and temperature control, the border-rich structure was obtained, which provides a good contact between electrode-electrolyte interfaces and increases the transmission path for Na+ ions. In addition, the as-prepared sample with rhombohedral phase demonstrated lower band gap and lower energy barrier for Na+ ions insertion. Benefiting from the kinetics optimization, the as-prepared electrode exhibited initial capacity of 120mAhg−1 and maintained nearly 80% after 280 cycles at current density of 100mAg−1. This electrode also exhibited good rate performance about 60mAhg−1 at rate of 10C. The structural stability is also related to the formation of the passivation layer during the charge-discharge process. The optimized passivation layer not only protects the electrode form the adverse side reactions at high voltage but also delivers low interface impedance. It can be inferred that the passivation layer plays a positive role in long cycling performance. When the as-prepared electrode was measured in an electrolyte with FEC additive, it exhibited a high capacity retention rate of 79% after 500 cycles.

Publisher URL: www.sciencedirect.com/science

DOI: S2211285517304111

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.