A simple inorganic hybrids strategy for graphene fibers fabrication with excellent electrochemical performance
A simple inorganic hybrids strategy for graphene fibers fabrication with excellent electrochemical performance
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一种简单的无机杂化策略，用于制造具有优异电化学性能的石墨烯纤维
DOI：
10.1016/j.jpowsour.2019.227637
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发表时间：
2020-02
影响因子：
9.2
通讯作者：
Meifang Zhu
中科院分区：
文献类型：
--
作者：
Guoyin Chen;Yulu Ai;Innocent Tendo Mugaanire;Wujun Ma;Benjamin S.Hsiao;Kai Hou;Meifang Zhu
基于纤维状石墨烯电极（FGE）的超级电容器作为可穿戴电子设备的柔性电源具有巨大的潜力。然而，它们的低电化学性能受到石墨烯片的重新堆叠和固有疏水性的限制。在石墨烯材料中嵌入纳米填料是提高电容的有效方法，但其对材料的机械性能和导电性能有负面影响，影响了其在可穿戴电子领域的实际应用。本文提出了一种以氧化石墨烯（GO）和纳米粘土为原料，通过非液晶纺丝和化学还原制备无机杂化纤维的方法，以制备高性能的石墨烯纤维。所得rGO/Clay混杂纤维具有增强的机械性能、良好的亲水性、优异的电容性能并保持高导电性。值得注意的是，GO/粘土重量比为100/20的样品具有230.9 F cm-3的高电容、102.7 MPa的强度、58.3°的接触角和10.4 S cm-1的电导率。此外，还组装了一种柔性全固态超级电容器，其能量密度为6.14 mWh cm−3（5.24 mWh g−1），功率密度为28.33 mWh cm−3（24.17 mWh g−1），能够应用于可穿戴电子产品。
Fibrous graphene electrode (FGE) based supercapacitors have great potential as flexible power sources for wearable electronics. However, their low electrochemical performance is limited by the restacking and intrinsic hydrophobicity of graphene sheets. Intercalation of nanofillers within graphene materials has been proved as an effective way to enhance the capacitance but often negative to the mechanical property and conductivity of FGE, thus influencing practical applications in wearable electronics. Herein, an approach for fabricating inorganic hybrid fibers from graphene oxide (GO) and nano Clay via non-liquid-crystal spinning and following by chemical reduction is presented to fabricate high performance graphene fiber. The resultant rGO/Clay hybrid fibers had the enhanced mechanical property, good hydrophilicity, as well as excellent capacitive performance and kept a high conductivity. Notably, the sample with a GO/Clay weight ratio of 100/20 possessed a high capacitance of 230.9 F cm−3, a strength of 102.7 MPa, a contact angle of 58.3°, and conductivity of 10.4 S cm−1. Moreover, a flexible all-solid-state supercapacitor was assembled with a high energy density of 6.14 mWh cm−3(5.24 mWh g−1) at the power density of 28.33 mWh cm−3(24.17 mWh g−1), capable of being applied in wearable electronics.
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影响因子：
4.6
作者：
Xia, Mengge;Cheng, Yanhua;Zhu, Meifang
通讯作者：
Zhu, Meifang
影响因子：
17.1
作者：
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影响因子：
10.8
作者：
Zhu, Jia;Hsu, Ching-Mei;Cui, Yi
通讯作者：
Cui, Yi
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影响因子：
6.6
作者：
Mo, Mengmin;Chen, Chuchu;Li, Dagang
通讯作者：
Li, Dagang
影响因子：
17.1
作者：
Fang, Bo;Peng, Li;Gao, Chao
通讯作者：
Gao, Chao