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[×ÊÔ´] Adv. Funct. Mater ÒÔNi £¨OH£©2 /ʯīϩºÍ¶à¿×ʯīΪµç¼«µÄ³¬¼¶µçÈÝÆ÷

ÕâÊÇ·¢±íÔÚAdv. Funct. MaterÉÏ£¬ÌâÄ¿£ºAdvanced Asymmetric Supercapacitors Based on Ni(OH) 2 /Graphene and Porous Graphene Electrodes with High Energy Density£¬Ö÷Òª½²ÊöÁËÒÔNi £¨OH£©2 /ʯīϩºÍ¶à¿×ʯīΪ³¬¼¶µçÈÝÆ÷µç¼«£¬ÒÔÆä¶ÀÌØµÄ½á¹¹ÏÔʾÁ˷dz£ºÃµÄµç»¯Ñ§ÐÔÄÜ£¬¾ßÓзdz£¸ßµÄÄÜÁ¿ÃܶȺͽϸߵÄÑ­»·ÊÙÃü¡£±¾ÎÄÒýÎÄ61ƪ¡£
In order to achieve high energy and power densities, a high-voltage asymmetric  supercapacitor is successfully fabricated using Ni(OH) 2 /graphene and porous graphene as the positive and negative electrodes, respectively. Because of their unique structure, both of these materials exhibit excellent electrochemical performances. The optimized asymmetric supercapacitor could be cycled reversibly in the high-voltage region of 0¨C1.6 V and displays intriguing performances with a maximum specifi c capacitance of 218.4 F g − 1 and high energy density of 77.8 Wh kg − 1 . Furthermore, the Ni(OH) 2 /graphene//porous graphene supercapacitor device exhibits an excellent long cycle life along with 94.3% specifi c capacitance retained after 3000 cycles.
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[ Last edited by ÇóË÷µÄºèðÀ on 2012-11-24 at 14:27 ]
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