High stability Na0.7MnO2.05 cathode for sodium ion batteries

Sodium ion-stabilized 2 × 4 tunnel manganese oxide nanorods as cathodes for high-performance aqueous zinc-ion batteries

“…Since the 1D tunnel structure MnO 2 is filled with a large number of water and metal cations, the desired tunneling structure can only be acquired under specific synthetic conditions (pH, temperature and reaction time) using metal cations (Na + , Mg 2+ , and K + ) as the guiding agents. 29–31 Therefore, we develop the route to prepare Na 0.4 MnO 2 with a (2 × 4) tunnel structure using the hydrothermally synthesized Na-birnessite as the precursor and 5 M NaCl as the guiding agent. The electrochemical performance of Na 0.4 MnO 2 as a cathode material for aqueous ZIBs is investigated.…”