AUTHOR=Wang Qi , Li Xin , Xu Junmin , Yuan Yueyue , Li Xinyue , Wang Xinchang 

TITLE=Rational Synthesis of Freestanding NaxV2O5-rGO Paper as the Stable Cathode for Sodium Ion Batteries

JOURNAL=Frontiers in Materials

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2022.913804

DOI=10.3389/fmats.2022.913804

ISSN=2296-8016

ABSTRACT=<p>Flexible Na<sub>x</sub>V<sub>2</sub>O<sub>5</sub>/rGO papers were successfully prepared <italic>via</italic> hydrothermal method followed by vacuum filtration as a high-performance cathode for SIBs. The as-prepared Na<sub>x</sub>V<sub>2</sub>O<sub>5</sub>/rGO combined flexibility and high conductivity that can buffer stress and facilitate the fast transportation of electrons during the charge-discharge process. As a result, the as-prepared Na<sub>x</sub>V<sub>2</sub>O<sub>5</sub>-rGO paper can exhibit a reversible Na-ion storage capacity of ∼197 mA h g<sup>−1</sup> at 100 mA g<sup>−1</sup> and a good cycling performance with 81% capacity retention for 400 cycles at a high current density of 500 mA g<sup>−1</sup>, showing great potential in flexible energy storage devices.</p>