Self-initiated coating of polypyrrole on MnO2/Mn2O3 nanocomposite for high-performance aqueous zinc-ion batteries

In situpolymerized synthesis of MnO nanoparticles anchored on N,S co-doped carbon as efficient cathodes for quasi-solid-state zinc ion batteries

“…7(f) displays the maximum specific capacity and energy at respective current rates. As can be seen, our quasi-solid-state Zn‖MnO@NSC device delivers an energy density of as high as 411 W h kg −1 even at a high current density, better than or comparable to those of most of the recent ZIBs, for instance, the quasi-solid-state Zn‖ZnMn 2 O 4 battery (273 W h kg −1 ), 62 Zn‖α-MnO battery (146 W h kg −1 ), 63 Zn‖Mn-doped K 0.23 V 2 O 5 battery (122 W h kg −1 ), 64 Zn‖MnO 2 /CNT battery (385 W h kg −1 ), 65 and aqueous Zn‖Mn 2 O 3 battery (365 W h kg −1 ), 66 Zn‖MnO 2 /Mn 2 O 3 nanocomposite battery (386 W h kg −1 ), 67 Zn‖CNT/MnO 2 -PPy battery (348 W h kg −1 ), 68 Zn‖N-VO-MnO 1− x battery (283 W h kg −1 ), 21 Zn‖δ-MnO 2 battery (319 W h kg −1 ), 69 Zn‖α-(Mn 2 O 3 –MnO 2 ) battery (302 W h kg −1 ), 70 Zn‖amorphous α-MnO 2 battery (273 Wh kg −1 ), 71 Zn‖todorokite-type MnO 2 battery (139 W h kg −1 ), 59 Zn‖γ-MnO 2 battery (379 W h kg −1 ), 72 Zn‖CoMn-PBA HSs battery (164 W h kg −1 ), 73 Zn‖MnO battery (347 W h kg −1 ), 39 Zn‖ZnMn 2 O 4 /Mn 2 O 3 nanocomposite battery (287 W h kg −1 ), 74 and Zn‖pyrene-4,5,9,10-tetraone battery (242 W h kg −1 ), 75 suggesting that the MnO@NSC is an ideal cathode material for ZIBs.…”

Conductive polymer composites cathodes for rechargeable aqueous Zn-ion batteries: A mini-review

“…The improved electrical conductivity and reduced dissolution phenomena were reported for MnO2/Mn2O3 nanocomposites coated with PPy (Figure 4a, b) [38]. The material was prepared using a scalable molten salt synthesis followed by the self-initiated polymerization.…”

Manganese‐based materials as cathode for rechargeable aqueous zinc‐ion batteries

“…[19][20][21][22][23] Nonetheless, the development of manganese-based cathodes still faces some critical issues, including sluggish kinetics and poor stability. 24,25 The quest for developing manganese-based materials for ZIB cathodes has sped up during the past few years and delivered many promising results. Still, systematical reviews are needed to comprehensively summarize the development in the study of manganesebased materials for ZIB cathodes.…”

“…Among these materials, the low‐cost, nontoxic manganese‐based compounds are favored in the commercial application of ZIBs owing to their high capacities and high operating voltage 19–23 . Nonetheless, the development of manganese‐based cathodes still faces some critical issues, including sluggish kinetics and poor stability 24,25 . The quest for developing manganese‐based materials for ZIB cathodes has sped up during the past few years and delivered many promising results.…”