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https://hdl.handle.net/2440/126738
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Type: | Journal article |
Title: | Partial nitridation-induced electrochemistry enhancement of ternary oxide nanosheets for fiber energy storage device |
Author: | Tan, H. Liu, Z. Chao, D. Hao, P. Jia, D. Sang, Y. Liu, H. Fan, H.J. |
Citation: | Advanced Energy Materials, 2018; 8(21):1800685-1-1800685-10 |
Publisher: | Wiley |
Issue Date: | 2018 |
ISSN: | 1614-6832 1614-6840 |
Statement of Responsibility: | Hua Tan, Zhihe Liu, Dongliang Chao, Pin Hao, Dedong Jia, Yuanhua Sang, Hong Liu, and Hong Jin Fan |
Abstract: | Fiber‐based power sources are receiving interest in terms of application in wearable electronic devices. Herein, fiber‐shaped all‐solid‐state asymmetric energy storage devices are fabricated based on a partially nitridized NiCo₂O₄ hybrid nanostructures on graphite fibers (GFs). The surface nitridation leads to a 3D “pearled‐veil” network structure, in which Ni–Co–N nanospheres are mounted on NiCo₂O₄ nanosheets' electrode. It is demonstrated that the hybrid materials are more potent than the pure NiCo₂O₄ in energy storage applications due to a cooperative effect between the constituents. The Ni–Co–N segments augment the pristine oxide nanosheets by enhancing both capacity and rate performance (a specific capacity of 384.75 mAh g⁻¹ at 4 A g⁻¹, and a capacity retention of 86.5% as the current is increased to 20 A g⁻¹). The whole material system has a metallic conductivity that renders high‐rate charge and discharge, and an extremely soft feature, so that it can wrap around arbitrary‐shaped holders. All‐solid‐state asymmetric device is fabricated using Ni–Co–N/NiCo₂O₄/GFs and carbon nanotubes/GFs as the electrodes. The flexible device delivers outstanding performance compared to most oxide‐based full devices. These structured hybrid materials may find applications in miniaturized foldable energy devices. |
Keywords: | Fiber-based power source; flexible energy storage; hybrid battery; metal nitride array; solid state supercapacitor |
Rights: | © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
DOI: | 10.1002/aenm.201800685 |
Published version: | http://dx.doi.org/10.1002/aenm.201800685 |
Appears in Collections: | Aurora harvest 4 Chemical Engineering publications |
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