Three-dimensional N-doped graphene as anode material with superior cycle stability for sodium ion batteries
Three-dimensional N-doped graphene as anode material with superior cycle stability for sodium ion batteries
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三维N掺杂石墨烯作为钠离子电池负极材料具有优异的循环稳定性
DOI：
10.1016/j.matlet.2017.05.046
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发表时间：
2017-09-01
影响因子：
3
通讯作者：
Yang, Chenghao
中科院分区：
文献类型：
--
作者：
Lin, Zhihua;Xiong, Xunhui;Yang, Chenghao
提出了一种制备三维n掺杂石墨烯的简单方法。石墨烯作为钠离子电池的负极，在0.05 a g（-1）下具有405.2 mA h g（-1）的高可逆容量，在2 a g（-1）下可保持100%的保留率达3700次。优异的性能归功于独特的大表面积分层多孔结构和n掺杂诱导的缺陷，这既有利于Na+的储存和扩散，又抑制了石墨烯在循环过程中的再堆积。(C) 2017 Elsevier B.V.版权所有
A simple process has been proposed to prepare three-dimensional N-doped graphene. The graphene shows outstanding performances when evaluated as anode for sodium ion battery, delivering a high reversible capacity of 405.2 mA h g(-1) at 0.05 A g(-1) and maintaining a retention of 100% up to 3700 cycles at 2 A g(-1). The excellent performances are ascribed to unique hierarchical porous architecture with large surface area and the N-doping-induced defects, which both can facilitate the storage and diffusion of Na+ and inhibit the restacking of graphene during cycling. (C) 2017 Elsevier B.V. All rights reserved.