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The electrochemical properties of two‐holes (HGF2). a) Cyclic voltammetry (CV) curves of HGF electrode, b) galvanostatic charge/discharge (GCD) curve of HGF electrode at various currents, c) long‐term cycling performance, d) capacitance of HGF at different currents, the inset schematic shows the HGF as a working electrode in a three‐electrode system, e) Coulombic efficiency (CE) of the HGF at diverse current, and f) Nyquist plots of the HGF.
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Realizing high‐strength fiber electrodes with hollow/porous structure and high electrochemical activity is important for one dimensional energy storage device and wearables. Herein, we develop a graphene fiber with a tunable hollow structure, achieving fiber electrodes with a high surface specific area and electrochemical activity. Specifically, si...
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Citations
The past decade has witnessed dynamic and fruitful developments of carbon materials. Particularly, graphene fibers emerge as a new type of carbon material directly composed of graphene sheets with unique structure, excellent electrical conductivity, strength, and lightweight properties, thus attracting increasing interest of scientists in multi-disciplines ranging from chemistry, materials science, biology to medical science. In this Perspective, we summarize latest progresses in the synthesis of graphene fibers and discuss their pros and cons. Then, various strategies for improving the mechanical, electrical, and thermal properties of graphene fibers are introduced in detail. Subsequently, recent applications of graphene fibers are highlighted, such as self-powered devices, photovoltaics, neural recording microelectrodes, etc., aiming to present the state of the art in this fast-growing field. Finally, the current limitation and future prospect of large-scale application of graphene fibers are also proposed. With the continuous development of materials and techniques, graphene fibers are projected to take more important roles in diverse fields in the future.
