Titanic acid showed higher capacity of 104. 2% capacity retention cycled 1000 cycles at 1 A g −1. . Rechargeable aqueous ammonium-ion batteries (AAIBs) have attracted more and more attention in energy storage devices because of great safety and cost-effectiveness, as well as excellent rate capability. Recently, it is the main exploration focus for the further improvement of AAIBs to develop. . We report an amorphous titanic acid of TiO1. 28H2O as a new electrode for aqueous ammoniumion batteries, which operates in a new waterinsalt electrolyte—25 m NH 4CH3COO. The titanic acid compound exhibits an X-ray diffraction pattern corresponding to a bronze-type titanium dioxide except for a. . Titanic acid, a general term referring to various hydrated forms of titanium dioxide (such as orthotitanic acid, H₄TiO₄, or metatitanic acid, H₂TiO₃), is not typically used directly in its acid form for widespread commercial applications. Herein,it is firstly demonstrated that the hydrated titanic acid (H 2 Ti 3 O 7 ·xH 2 O) can be applied as an ultralow-potentia ed dendrite-free aqueous zinc-ion batteries? 4.
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