Ag/MnO(2) Composite Sheath-Core Structured Yarn Supercapacitors.
Ag/MnO(2) Composite Sheath-Core Structured Yarn Supercapacitors.
复制标题
AG/MNO(2)复合鞘核结构化纱线超级电容器。
DOI:
10.1038/s41598-018-31611-2
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发表时间:
2018-09-06
影响因子:
4.6
通讯作者:
Kim SJ
中科院分区:
文献类型:
--
作者:
Kim JH;Choi C;Lee JM;de Andrade MJ;Baughman RH;Kim SJ
One-dimensional (1D) yarn or fiber-based supercapacitors that have small diameter, volume and high mechanical strength are needed due to the demands on power source for wearable electronics, micro-devices, and implantable medical devices. The composite sheath is fabricated on a commercially available CNT yarn substrate by alternating depositions of MnO2 and Ag layers. Synergistic effect of high loading level of pseudocapacitive MnO2 and reasonably improved rate-capability are achieved. In the composite sheath, the interconnected networks provide electrical contact between MnO2 aggregates and adjacent Ag layer. The conductive Ag inter layers shorten the solid-state charge diffusion length in the MnO2. Moreover, generated electrons during the charge/discharge process can be collected rapidly by the adjacent Ag layer, therefore, the great extents of MnO2 could be loaded onto the surface of CNT core fiber electrode without a significant rate-capability degradation. Due to the high MnO2 loading level, the composite sheath-core yarn supercapacitor showed excellent specific areal capacitance (322.2 mF/cm2) and according energy density (18.3 µWh/cm2).
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17.1
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通讯作者:
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17.1
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