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Nitrogen-doped graphene nanosheets as cathode materials with excellent electrocatalytic activity for high capacity lithium-oxygen batteries

机译:氮掺杂石墨烯纳米片作为阴极材料,对高容量锂氧电池具有出色的电催化活性

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摘要

Nonaqueous lithium-oxygen battery with nitrogen-doped graphene nanosheets (N-GNSs) as cathode materials delivered a discharge capacity of 11660 mAh g ~(- 1), which is about 40% higher than that with the pristine graphene nanosheets (GNSs). The electrocatalytic activity of N-GNSs for oxygen reduction in the nonaqueous electrolyte is 2.5 times as that of GNSs. The excellent electrochemical performance of N-GNSs is attributed to the defects and functional groups as active sites introduced by nitrogen doping.
机译:以氮掺杂石墨烯纳米片(N-GNSs)为正极材料的非水锂氧电池的放电容量为11660 mAh g〜(-1),比原始石墨烯纳米片(GNSs)高约40%。 N-GNS对非水电解质中氧气还原的电催化活性是GNS的2.5倍。 N-GNS的出色电化学性能归因于氮掺杂引入的作为活性位点的缺陷和官能团。

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