Irfan Muhammad, Khan Izhar Ullah, Wang Jiao, Li Yang, Liu Xianhua
Tianjin Key Lab. of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University Tianjin 300354 PR China
RSC Adv. 2020 Feb 11;10(11):6444-6451. doi: 10.1039/c9ra08812a. eCollection 2020 Feb 7.
Metal nitrides are broadly applicable in the field of electrochemistry due to their excellent electrical properties. In this study, a 3D nanostructured NiN-CoN catalyst was prepared by using a versatile urea glass method, and was tested as an anode catalyst for a glucose fuel cell. The synthesized NiN-CoN exhibits uniform particle dispersion in structure, morphology, and composition, and has a interpenetrating three-dimensional network structure. Notably, the NiN-CoN significantly improved the catalytic activity of glucose oxidation compared to NiN, CoN, and conventional activated carbon electrodes. The superior electrochemical performance could be attributed to its porous structure and unique properties, which provided a fast transport network for charge and mass transfer as well as good synergetic effect. The glucose fuel cell equipped with a NiN-CoN anode achieved 30.89 W m power and 97.66 A m current densities at room temperature. This investigation provides potential directions for the design of cost-effective bimetallic catalysts for a wide range of glucose fuel cell applications.
金属氮化物因其优异的电学性能而广泛应用于电化学领域。在本研究中，采用通用的尿素玻璃法制备了一种三维纳米结构的NiN-CoN催化剂，并将其作为葡萄糖燃料电池的阳极催化剂进行了测试。合成的NiN-CoN在结构、形态和组成上表现出均匀的颗粒分散，并且具有相互贯穿的三维网络结构。值得注意的是，与NiN、CoN和传统活性炭电极相比，NiN-CoN显著提高了葡萄糖氧化的催化活性。其优异的电化学性能可归因于其多孔结构和独特性能，这些性能为电荷和质量传递提供了快速传输网络以及良好的协同效应。配备NiN-CoN阳极的葡萄糖燃料电池在室温下实现了30.89 W/m的功率和97.66 A/m的电流密度。本研究为设计适用于广泛葡萄糖燃料电池应用的经济高效双金属催化剂提供了潜在方向。
