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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Dispersion of Ni2+ ions via acetate precursor in the preparation of NaNiPO4 nanoparticles: effect of acetate vs. nitrate on the capacitive energy storage properties
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Dispersion of Ni2+ ions via acetate precursor in the preparation of NaNiPO4 nanoparticles: effect of acetate vs. nitrate on the capacitive energy storage properties

机译：Ni2 +离子的分散通过乙酸盐前体在制备Nanipo4纳米颗粒中的作用：醋酸乙烯酯与硝酸盐对电容储能性能的影响

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摘要

The influence of the precursors on the dispersion of Ni2+ ions and the presence of several other functional groups was investigated in the preparation of sodium nickel phosphate (NaNiPO4) cathode for a supercapacitor study. The dispersion of nickel phases, in the form of nanosheets, is influenced by the type of precursors used in the synthesis. XPS based spectroscopic information on the surface functional groups on NaNiPO4 show differences between the precursors (i.e.) acetate-and nitrate-derived materials. The benefits of using acetate as an alternative to nitrate are explored by using the NaNiPO4 nanoparticles as a cathode for supercapacitor applications. The acetate-derived material exhibits improved electro-chemical properties possessing both redox behaviour and double-layer capacitance. The results indicate that the metal acetates are homogenously distributed. Acetate functionalization resulted in an improved capacitance of 90 F g(-1) compared with that obtained from the nitrate precursor derived material (58 F g(-1)). Capacitance retention and high rate capability were also a feature of the acetate-derived material. The sodium nickel phosphate cathode material has provided useful insights on the precursor chemistry in storing renewable energy have been reported for the first time.
机译：研究了前体对Ni2 +离子分散的影响及其几种其他官能团的存在，用于制备磷酸钠（Nanipo4）阴极进行超级电容器研究。纳米片形式的镍相的分散受合成中使用的前体类型的影响。基于XPS的表面官能团上的XPS在纳米O4上的光谱信息显示出前体（即）乙酸酯和硝酸盐衍生材料之间的差异。通过使用NaNipo4纳米颗粒作为超级电容器应用的阴极来探索使用醋酸酯作为硝酸盐的替代的益处。乙酸衍生材料表现出具有氧化还原行为和双层电容的改善的电化学性质。结果表明金属醋酸酯是均匀分布的。与从硝酸盐前体衍生材料（58Fg（-1））相比，乙酸酯官能化导致90 f g（-1）的改善的电容。电容保留和高速率能力也是乙酸衍生材料的特征。磷酸钠阴极材料已经为第一次报告了储存可再生能量的前体化学提供了有用的见解。

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