An Aqueous Symmetric Sodium‐Ion Battery with NASICON‐Structured Na 3 MnTi(PO 4 ) 3 | Zendy

Gao Hongcai | Zendy; Goodenough John B. | Zendy

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An Aqueous Symmetric Sodium‐Ion Battery with NASICON‐Structured Na 3 MnTi(PO 4 ) 3

Author(s) -

Gao Hongcai,

Goodenough John B.

Publication year - 2016

Publication title -

angewandte chemie

Language(s) - English

Resource type - Journals

eISSN - 1521-3757

pISSN - 0044-8249

DOI - 10.1002/ange.201606508

Subject(s) - aqueous solution , electrolyte , cathode , fast ion conductor , anode , battery (electricity) , sodium ion battery , inorganic chemistry , ion , sodium , electrochemistry , chemistry , redox , materials science , electrode , thermodynamics , organic chemistry , physics , power (physics) , faraday efficiency

A symmetric sodium‐ion battery with an aqueous electrolyte is demonstrated; it utilizes the NASICON‐structured Na 3 MnTi(PO 4 ) 3 as both the anode and the cathode. The NASICON‐structured Na 3 MnTi(PO 4 ) 3 possesses two electrochemically active transition metals with the redox couples of Ti 4+ /Ti 3+ and Mn 3+ /Mn 2+ working on the anode and cathode sides, respectively. The symmetric cell based on this bipolar electrode material exhibits a well‐defined voltage plateau centered at about 1.4 V in an aqueous electrolyte with a stable cycle performance and superior rate capability. The advent of aqueous symmetric sodium‐ion battery with high safety and low cost may provide a solution for large‐scale stationary energy storage.

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