An All-solid-state and All-organic Sodium-ion Battery based on Redox-active Polymers and Plastic Crystal Electrolyte

• The Na+-PCEs show a high conductivity of ∼10−3 S cm−1 at room temperature.
• All-organic Na–ion battery includes plastic crystal electrolyte, P(AN-NA) and PAQS.
• Solid-state all-organic Na–ion battery shows a high electrochemical properties.

A solid state Na+ electrolyte is developed by dissolving Na+ salts into the organic crystal succinonitrile, which exhibits a high ionic conductivity of ∼10−3 S cm−1 at room temperature and a wide electrochemical window of >3 V. Based on this solid-state electrolyte, an all-organic Na–ion battery is constructed by use of poly(aniline/o-nitroaniline) (P(AN-NA)) cathode and poly(anthraquinonyl sulfide) (PAQS) anode. This solid-state battery works well with an open circuit voltage of 2.4 V and can be cycled at considerable high rate of > 800 mA g−1, showing a competitive performance to the organic solvent Na-ion batteries.

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