In this study, the hierarchical hollow Na2FePO4F/C microspheres as high-performance cathode for sodium-ion batteries (SIBs) are developed by adjusting the reaction time of solvothermal synthesis. With prolonging solvothermal time, the structure of the microspheres gradually changes from urchin-like hollow structure to acanthosphere-like hollow structure and finally to double-shelled hollow structure. Dissolution–recrystallization mechanism is proposed to better understand the formation of the double-shelled hollow microspheres of Na2FePO4F/C. When evaluated as cathode materials for SIBs, the double-shelled hollow Na2FePO4F/C sample delivers a discharge capacity as high as 120.1 mAh g−1 at 0.1 C and maintains the capacity retention of 92.5% at 1 C after 200 cycles. For the purpose of explaining the improved electrochemical performance of the double-shelled hollow Na2FePO4F/C materials, all the electrodes are analyzed with cyclic voltammetry and electrochemical impedance spectroscopy. It is found that the excellent electrochemical performances are mainly attributed to its unique structure, which can enhance electronic and ionic conductivity during repeated Na+ insertion/extraction processes.
Journal of Materials Science – Springer Journals
Published: Oct 25, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera