Spinel-oxide-based mixtures have been explored for rapid and efficient biological molecule detection and energy storage applications. Porous Co₃O₄ nanosheets were used as growth sites, where NiCo₂O₄ nanorods were anchored to the Co₃O₄ surface to form porous Co₃O₄–NiCo₂O₄ nanosheets to achieve accurate glucose or hydrogen-peroxide monitoring and potential supercapacitor applications. The nanostructure and composition were confirmed by scanning-electron microscopy, transmission-electron microscopy and X-ray photoelectron spectroscopy. Under optimal preparation and sensing conditions, porous Co₃O₄–NiCo₂O₄ nanosheets exhibited a preeminent sensitivity towards glucose oxidation (1463.13 μA mM⁻¹cm⁻²) and hydrogen-peroxide reduction (303.42 μA mM⁻¹cm⁻²), with a low detection limit of 0.112 μM and 0.596 μM, respectively, and a good selectivity and reproducibility. Such porous mixture-coated Ni foam electrodes are suitable for supercapacitor performances with a high specific capacitance of 1041.2 F/g at a current density of 2 A/g and no obvious capacitance attenuation after 5000 cycles at a current density of 5 A/g, which will promote the exploration of nanocomposites in multi-purpose fields.

已经探索了基于尖晶石氧化物的混合物，用于快速有效的生物分子检测和能量存储应用。使用多孔的Co ₃ O ₄纳米片作为生长点，其中将NiCo ₂ O ₄纳米棒固定在Co ₃ O ₄表面上，以形成多孔的Co ₃ O ₄ –NiCo ₂ O _4。纳米片可实现精确的葡萄糖或过氧化氢监测和潜在的超级电容器应用。通过扫描电子显微镜，透射电子显微镜和X射线光电子能谱确认了纳米结构和组成。在最佳制备和检测条件下，多孔钴₃ ö ₄ -NiCo ₂ ö ₄纳米片表现出卓越的灵敏度对葡萄糖氧化（1463.13μA毫^-1厘米^-2）和过氧化氢的还原（303.42μA毫^-1厘米^-2）的检测限较低，分别为0.112μM和0.596μM，并且具有良好的选择性和重现性。此类多孔混合涂层镍泡沫电极适用于超级电容器性能，在2 A / g的电流密度下具有1041.2 F / g的高比电容，在5 A / g的电流密度下经过5000次循环后无明显的电容衰减，这将促进纳米复合材料在多用途领域的探索。