Fast and reversible surface redox reaction in nanocrystalline vanadium nitride supercapacitors
Fast and reversible surface redox reaction in nanocrystalline vanadium nitride supercapacitors
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DOI：
10.1002/adma.200502471
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发表时间：
2006-05-02
影响因子：
29.4
通讯作者：
Kumta, Prashant N.
中科院分区：
文献类型：
--
作者：
Choi, Daiwon;Blomgren, George E.;Kumta, Prashant N.
纳米晶体VN的表面化学的改性产生了一类新的超级电容器，其提供了令人印象深刻的比电容。在图中所示的电子导电纳米晶体VN上以及在覆盖物上形成VOx（低电子导电性）的表面纳米层引起了一系列可逆的氧化还原反应，这些反应被认为是高电容的原因。将这一概念应用于其他过渡金属有望拓宽超级电容器材料的范围。
Modification of the surface chemistry of nanocrystalline VN yields a new class of supercapacitors that deliver an impressive specific capacitance. The creation of surface nanolayers of VOx (poor electronic conductivity) on the electronically conductive nanocrystalline VN shown in the figure-and on the cover gives rise to a series of reversible redox reactions that are thought to be responsible for the high capacitance. Application of the concept to other transition metals is expected to broaden the scope of supercapacitor materials.