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首页> 外文期刊>Materials Science and Engineering >PPy/graphene nanosheets/rare earth ions: A new composite electrode material for supercapacitor
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PPy/graphene nanosheets/rare earth ions: A new composite electrode material for supercapacitor

机译：PPy /石墨烯纳米片/稀土离子：一种用于超级电容器的新型复合电极材料

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摘要

ighly conductive PPy/graphene nanosheets/rare earth ions (PPy/GNS/RE~(3+) composites were prepared via in situ polymerization with p-toluenesulfonic acid as a dopant and FeCl_3 as an oxidant. The effects of GNS and RE~(3+) on the electrical conductivity of the composites were investigated. The results showed that the GNS as a filler had effect on the conductivity of PPy/GNS/RE~(3+) composites, which played an important role in forming a conducting network in PPy matrix. The microstructures of GNS and PPy/GNS/RE~(3+) were characterized by the SEM and TEM examinations. It was found that GNS and PPy nanospheres formed a uniform composite with the PPy nanospheres absorbed on the GNS surface and/or filled between the GNS. Such uniform structure together with the observed high conductivities afforded high specific capacitance when used as supercapacitor electrodes. A specific capacitance of as high as 238 F/g at a current density of 1 A/g was achieved over the PPy/GNS/Eu~(3+) composite.
机译：以对甲苯磺酸为掺杂剂，FeCl_3为氧化剂，通过原位聚合制备了导电的PPy /石墨烯纳米片/稀土离子（PPy / GNS / RE〜（3+）复合材料。GNS和RE〜（ 3+）对复合材料的电导率的影响研究表明，GNS作为填料对PPy / GNS / RE〜（3+）复合材料的电导率有影响，在形成导电网络方面起着重要作用通过SEM和TEM观察表征了GNS和PPy / GNS / RE〜（3+）的微观结构，发现GNS和PPy纳米球形成了均匀的复合物，PPy纳米球被吸收在GNS表面上。当用作超级电容器电极时，这种均匀的结构以及所观察到的高电导率提供了高比电容，在1 A / g的电流密度下，比电容达到238 F / g。 PPy / GNS / Eu〜（3+）复合材料。

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