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Article

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

1
School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
2
Key Laboratory of ATMMT Ministry of Education & National Engineering Laboratory for Textile Fiber Materials and Processing Technology & Institute of Smart Fiber Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1676; https://doi.org/10.3390/nano9121676
Received: 12 October 2019 / Revised: 17 November 2019 / Accepted: 22 November 2019 / Published: 24 November 2019
La-based perovskite-type oxide is a new type of supercapacitor electrode material with great potential. In the present study, LaMnO3/MnO (LMO/MnO) nano-arrays supported by carbon cloth are prepared via a simple one-step electrodeposition as flexible supercapacitor electrodes. The structure, deposit morphology of LMO/MnO, and the corresponding electrochemical properties have been investigated in detail. Carbon cloth-supported LMO/MnO electrode exhibits a specific capacitance of 260 F·g−1 at a current density of 0.5 A·g−1 in 0.5 M Na2SO4 aqueous electrolyte solution. The cooperative effects of LMO and MnO, as well as the uniform nano-array morphology contribute to the good electrochemical performance. In addition, a symmetric supercapacitor with a wide voltage window of 2 V is fabricated, showing a high energy density of 28.15 Wh·kg−1 at a power density of 745 W·kg−1. The specific capacitance drops to 65% retention after the first 500 cycles due to the element leaching effect and partial flaking of LMO/MnO, yet remains stable until 5000 cycles. It is the first time that La-based perovskite has been exploited for flexible supercapacitor applications, and further optimization is expected. View Full-Text
Keywords: perovskite-type LaMnO3/MnO; supercapacitor flexible electrode; electrochemical properties; carbon cloth; electrodeposition perovskite-type LaMnO3/MnO; supercapacitor flexible electrode; electrochemical properties; carbon cloth; electrodeposition
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MDPI and ACS Style

Ma, P.; Lei, N.; Yu, B.; Liu, Y.; Jiang, G.; Dai, J.; Li, S.; Lu, Q. Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition. Nanomaterials 2019, 9, 1676. https://doi.org/10.3390/nano9121676

AMA Style

Ma P, Lei N, Yu B, Liu Y, Jiang G, Dai J, Li S, Lu Q. Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition. Nanomaterials. 2019; 9(12):1676. https://doi.org/10.3390/nano9121676

Chicago/Turabian Style

Ma, Pianpian, Na Lei, Bo Yu, Yongkun Liu, Guohua Jiang, Jianming Dai, Shuhong Li, and Qiuling Lu. 2019. "Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition" Nanomaterials 9, no. 12: 1676. https://doi.org/10.3390/nano9121676

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