Stable Low-current Electrodeposition of a-MnO2 on Super-aligned Electrospun Carbon Nanofibers for High-performance Energy Storage

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Jianjun Wei, Associate Professor (Creator)
The University of North Carolina at Greensboro (UNCG )
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Abstract: Metal oxide/carbonaceous nanomaterials are promising candidates for energy-storage applications. However, inhomogeneous mass and charge transfer across the electrode/electrolyte interface due to unstable metal oxide/carbonaceous nanomaterial synthesis limit their performance in supercapacitors. Here, it is shown that the above problems can be mitigated through stable low-current electrodeposition of MnO2 on superaligned electrospun carbon nanofibers (ECNFs). The key to this approach is coupling a self-designed four steel poles collector for aligned ECNFs and a constant low-current (40 µA) electrodeposition technique to form a uniform Na+-induced a-MnO2 film which proceeds by a time-dependent growth mechanism involving cluster-“kebab” structures and ending with a compact, uniform MnO2 film for high-performance energy storage.

Additional Information

Small 2017 14 (3), 1703237
Language: English
Date: 2017
electrodeposition, electrospun carbon nanofibers, growth mechanisms, MnO2, supercapacitors

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