气候变化领域集成服务门户(CCPortal): MnOx-decorated carbonized porous silicon nanowire electrodes for high performance supercapacitors

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DOI	10.1039/c7ee00977a
	MnOx-decorated carbonized porous silicon nanowire electrodes for high performance supercapacitors
	Ortaboy S.; Alper J.P.; Rossi F.; Bertoni G.; Salviati G.; Carraro C.; Maboudian R.
发表日期	2017
ISSN	17545692
起始页码	1505
结束页码	1516
卷号	10 期号:6
英文摘要	In this study, manganese oxide (MnOx)-decorated carbonized porous silicon nanowire arrays (MnOx/C/PSiNWs) are synthesized through eco-friendly and cost-effective processes. This electrode material system exhibits excellent electrochemical behavior with a specific capacitance reaching 635 F g-1, as well as the highest areal power (100 mWcm-2) and energy (0.46 mW h cm-2) ever reported in a silicon nanowire-based pseudocapacitor electrode. Furthermore, an asymmetric hybrid supercapacitor (AHS) is designed using MnOx/C/PSiNWs as the positive electrode, carbonized porous silicon nanowires (C/PSiNWs) as the negative electrode and 1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide (EMIM-TFSI)/acetonitrile as the electrolyte. The supercapacitor shows an excellent power density of 25 kW kg-1 and an energy density of 261 W h kg-1 at a current density of 0.2 mA cm-2 with a large operational potential window (3.6 V) and a good capacitance retention (82% after 10 000 CV cycles). The results show that the MnOx/C/PSiNW electrodes are promising materials for the future generation of high performance supercapacitors. © The Royal Society of Chemistry 2017.
英文关键词	Capacitance; Electrodes; Electrolytes; Manganese oxide; Nanowires; Porous silicon; Silicon; Supercapacitor; Capacitance retention; Electrochemical behaviors; Electrode material; Hybrid supercapacitors; Negative electrode; Porous silicon nanowires; Positive electrodes; Specific capacitance; Electrochemical electrodes; array; design method; electric field; electrical resistivity; electrochemical method; electrode; electrolyte; electronic equipment; manganese oxide; porous medium; silicon
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190472
作者单位	Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720, United States; Berkeley Sensor and Actuator Center, University of California, Berkeley, CA 94720, United States; Chemistry Department of Engineering Faculty, Istanbul University, Istanbul, 34320, Turkey; Nanosciences et Innovation Pour les Matériaux, la Biomédecine et l'Énergie, Institut Rayonnement-Matière de Saclay (IRAMIS), Commissariat à l'Energie Atomique et Aux Energies Alternatives (CEA), Université Paris-Saclay, CEA Saclay, Gif sur Yvette, 91191, France; IMEM-CNR Institute, Parco Area delle Scienze 37/A, Parma, 43124, Italy
推荐引用方式 GB/T 7714	Ortaboy S.,Alper J.P.,Rossi F.,et al. MnOx-decorated carbonized porous silicon nanowire electrodes for high performance supercapacitors[J],2017,10(6).
APA	Ortaboy S..,Alper J.P..,Rossi F..,Bertoni G..,Salviati G..,...&Maboudian R..(2017).MnOx-decorated carbonized porous silicon nanowire electrodes for high performance supercapacitors.Energy & Environmental Science,10(6).
MLA	Ortaboy S.,et al."MnOx-decorated carbonized porous silicon nanowire electrodes for high performance supercapacitors".Energy & Environmental Science 10.6(2017).