Facile fabrication of rGO/CNT hybrid fibers for high-performance flexible supercapacitors
Facile fabrication of rGO/CNT hybrid fibers for high-performance flexible supercapacitors
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轻松制造用于高性能柔性超级电容器的 rGO/CNT 混合纤维
DOI：
10.1007/s10854-017-7029-9
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发表时间：
2017-05
期刊：
影响因子：
--
通讯作者：
Pang Qi
中科院分区：
文献类型：
--
作者：
Jiang Naimeng;Huang Furong;Xia Weiwei;Wei Jianwu;Zhou Liya;Huo Zhibao;Pang Qi
以维生素C为还原剂，采用表面低温化学还原自组装法制备了新型还原氧化石墨烯/碳纳米管（rGO/CNT）混杂纤维。力学性能测试结果表明，与单根rGO纤维相比，极限伸长率为150%的混杂纤维具有更好的力学性能。循环伏安（CV）结果表明，rGO/CNTs杂化纤维的CV曲线面积较大，表现出比rGO纤维更好的电化学性能。rGO/CNT电极的体积比电容为559.9 F cm-3，并且在1A g-1的高电流密度下其定性比电容为59.76 F g-1。rGO/CNTs杂化纤维的体积比电容和定性比电容均高于单一rGO纤维，特别是在低扫描速度下。rGO/CNTs复合纤维的扫描电子显微镜和透射电子显微镜图像清楚地显示了rGO和CNTs的共组装和互连多孔结构的形成。在杂化纳米结构中，CNT充当增强棒，并且rGO和CNT之间的协同效应导致具有增强的机械和电化学性能的杂化纤维。柔性rGO/CNT杂化纤维显示出大的体积容量、良好的倍率性能、高稳定性和优异的柔性。由rGO/CNT混合纤维电极制成的微型SC是下一代柔性可穿戴电子产品的理想储能器件。
Novel reduced graphene oxide and carbon nanotube (rGO/CNT) hybrid fibers were prepared using a facial low-temperature chemical reduction self-assembly with vitamin C as the reducing agent. Mechanical measurements showed that hybrid fibers with an ultimate elongation of 150% had better mechanical properties than the single rGO fiber with an ultimate elongation of 105%. Cyclic voltammetry (CV) results showed that rGO/CNTs hybrid fibers exhibited better electrochemical performance than the rGO fiber because of the larger CV curve area of the former. The volumetric specific capacitance of the rGO/CNTs electrode was 559.9 F cm−3, and its qualitative specific capacitance was 59.76 F g−1at a high current density of 1 A g−1. Both the volumetric specific capacitance and qualitative specific capacitance of the rGO/CNTs hybrid fibers were higher than those of single rGO fibers, particularly at low sweep speed. The scanning electron microscopy and transmission electron microscopy images of the rGO/CNTs composite fiber clearly showed the rGO and CNTs co-assembly and the interconnected porous structure formation. In the hybrid nanostructure, CNTs served as a reinforced bar, and the synergic effect between rGO and CNTs led to hybrid fibers with enhanced mechanical and electrochemical performances. The flexible rGO/CNT hybrid fibers showed large volumetric capacity, good rate capability, high stability and excellent flexibility. The micro-SCs made of the rGO/CNT hybrid fibers electrode are ideal energy-storage devices for next-generation flexible wearable electronics.
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影响因子：
15.1
作者：
Cakici, Murat;Reddy, Kakarla Raghava;Alonso-Marroquin, Fernando
通讯作者：
Alonso-Marroquin, Fernando
影响因子：
9.1
作者：
Hassan, Mahbub;Reddy, Kakarla Raghava;Gomes, Vincent G.
通讯作者：
Gomes, Vincent G.
影响因子：
29.4
作者：
Sun, Hao;You, Xiao;Peng, Huisheng
通讯作者：
Peng, Huisheng
影响因子：
29.4
作者：
Jing Ren;Li Li-Li;Chen Chen-Chen;Xuli Chen;Zhenbo Cai;Longbin Qiu;Yonggang Wang;Xingrong Zhu;Huisheng Peng
通讯作者：
Jing Ren;Li Li-Li;Chen Chen-Chen;Xuli Chen;Zhenbo Cai;Longbin Qiu;Yonggang Wang;Xingrong Zhu;Huisheng Peng
影响因子：
6.7
作者：
Chen, Wufeng;Yan, Lifeng
通讯作者：
Yan, Lifeng