Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Republic of Korea.
ACS Nano. 2010 Jan 26;4(1):159-64. doi: 10.1021/nn901156w.
We report the synthesis of novel diphenylalanine/cobalt(II,III) oxide (Co(3)O(4)) composite nanowires by peptide self-assembly. Peptide nanowires were prepared by treating amorphous diphenylalanine film with aniline vapor at an elevated temperature. They were hybridized with Co(3)O(4) nanocrystals through the reduction of cobalt ions in an aqueous solution using sodium borohydride (NaBH(4)) without any complex processes such as heat treatment. The formation of peptide/Co(3)O(4) composite nanowires was characterized using multiple tools, such as electron microscopies and elemental analysis, and their potential application as a negative electrode for Li-ion batteries was explored by constructing Swagelok-type cells with hybrid nanowires as a working electrode and examining their charge/discharge behavior. The present study provides a useful approach for the synthesis of functional metal oxide nanomaterials by demonstrating the feasibility of peptide/Co(3)O(4) hybrid nanowires as an energy storage material.
我们通过肽自组装合成了新型二苯丙氨酸/氧化钴(II,III)（Co(3)O(4)）复合纳米线。通过在高温下用苯胺蒸气处理无定形二苯丙氨酸膜来制备肽纳米线。它们通过使用硼氢化钠（NaBH(4)）在水溶液中还原钴离子而与 Co(3)O(4)纳米晶体杂交，而无需任何复杂的过程，例如热处理。使用多种工具，如电子显微镜和元素分析，对肽/Co(3)O(4)复合纳米线的形成进行了表征，并通过构建具有混合纳米线作为工作电极的 Swagelok 型电池来探索其作为锂离子电池负极的潜在应用，并检查其充放电行为。本研究通过证明肽/Co(3)O(4)杂化纳米线作为储能材料的可行性，为通过肽自组装合成功能性金属氧化物纳米材料提供了一种有用的方法。
