Synthesis of γ ‐MnOOH and β‐MnO ₂ Nanowires and their Electrochemical Capacitive Behavior

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“…Most of researches attracted to use hydrothermal and sol gel processes because the shape of materials that can be easily controlled, while others preferred precipitation method since it offers simplicity, low cost, quick preparative method, finally easily controlled of both particle size and composition [15]. Singh et al synthesized firstly manganese oxyhydroxide γ-MnOOH nanowires via hydrothermal route and transferred into β-MnO2 by calcination at 300℃ [16]. Figure 2 indicate to manganese oxides transformations under different conditions [17].…”