Agar Hydrogel Template Synthesis of Mn₃O₄ Nanoparticles through an Ion Diffusion Method Controlled by Ion Exchange Membrane and Electrochemical Performance.

The specific capacitance shows a decreasing trend with the current densities increase, which is due to the gradually reduction of protons entering to the inside of active materials, and thus causing a transfer of redox reactions gradually from the inside of Mn 3 O 4 nanoparticles to the surface of electrode [ 45 , 46 ].

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