钴酸镍(锂电、钠电)：Three-dimensional NiCo2O4 nanowire arrays.pdfVIP

Journal of Materials Chemistry A PAPER Three-dimensional NiCo O nanowire arrays: 2 4 preparation and storage behavior for flexible Cite this: J. Mater. Chem. A, 2015, 3, lithium-ion and sodium-ion batteries with 19765 improved electrochemical performance† Yudi Mo,abc Qiang Ru,*abcd Junfen Chen,abc Xiong Song,abc Lingyun Guo,abc Shejun Huabc and Shaomin Penge The growth of three-dimensional (3D) porous NiCo O nanowire arrays on a carbon fiber cloth (denoted as 2 4 NCO@CFC) via a facile low-cost solution method combined with a subsequent annealing treatment is reported. The structure and morphology of the materials were characterized by X-ray diffraction, field- emission scanning electron microscopy, and transmission electron microscopy. Owing to the unique 3D hierarchical architecture, the NCO@CFC nanowires as a flexible electrode material for lithium-ion batteries exhibit a stable cycling performance (92.3% retention after 100 cycles), a fairly high rate capacity (507 mA h g1 at 4000 mA g1), and an enhanced lithium storage capacity. When employed as an electrode material for sodium-ion batteries, the NCO@CFC is investigated in compariso