1-Aminoanthraquinone as an electro-polymerizable additive to improve the cycling performance of a Na3V2(PO4)2F3 cathode

A small amount of 1-aminoanthraquinone (AAQ) was used as an electro-polymerizable additive in a liquid electrolyte. AAQ was electrochemically oxidized to form a thin conductive poly(1-aminoanthraquinone) (PAAQ) layer on a sodium-ion cathode material, Na3V2(PO4)2F3 (NVPF), at approximately 4.0 V during the initial charging processes. The resulting PAAQ layer provided an effective conduction pathway in the NVPF electrode, and thus enhanced the cycling performance in terms of the discharge capacity, cycling stability and rate capability. Our study demonstrates a simple and efficient approach to boost the electrochemical performance of a NVPF cathode for sodium-ion batteries.

Abstract licence: CC BY-NC

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.