In this work, low cost α-MnO₂ nanowires and α-MnO₂ nanowires supported on carbon Vulcan (α-MnO₂/C) have been synthesized via a simple and facile hydrothermal method for application in microbial fuel cells. The prepared samples have been characterized by X-ray diffraction (XRD), Raman spectroscopy and field emission scanning electron microscopy (FE-SEM). Electrocatalytic activities of the samples have been evaluated by means of cyclic voltammetry (CV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) in a neutral phosphate buffer solution. EIS was performed at different potentials to gain further insight into the kinetic properties of α-MnO₂/C. Both catalysts were used in air cathode microbial fuel cells to achieve power densities of 180 and 111 mWm⁻² for α-MnO₂/C and pristine α-MnO₂ nanowires, respectively. α-MnO2/C functions as a good and economical alternative for Pt free catalysts in practical MFC applications, as shown by the findings of stability test and voltage generation cycles in long-term operation of MFC.

在这项工作中，成本低α-MnO的_2个纳米线和α-MnO的_2个负载在碳上的Vulcan（α-MnO的纳米线₂ / C）已经通过在微生物燃料电池中的应用的简单且容易的水热法合成。制备的样品已通过X射线衍射（XRD），拉曼光谱和场发射扫描电子显微镜（FE-SEM）进行了表征。样品的电催化活性已通过中性磷酸盐缓冲溶液中的循环伏安法（CV），线性扫描伏安法（LSV）和电化学阻抗谱（EIS）进行了评估。EIS在不同的电位进行进一步深入了解的动力学性质α-MnO的₂/C。两种催化剂在空气阴极微生物燃料电池中使用，以实现180和111的MWM功率密度^-2为α-MnO的₂ / C和原始α-MnO的_2个纳米线，分别。在MFC的长期运行中，稳定性测试和电压产生周期的发现表明，α-MnO2/ C可以作为MFC实际应用中无铂催化剂的良好且经济的替代品。