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ÌâÄ¿£ºFabrication of niobium-based oxides/oxynitrides/nitrides and their applications in dye-sensitized solar cells and anaerobic digestion

ÆÚ¿¯£ºJournal of Power Sources

¾í(ÆÚ)£¬ÆðÖ¹Ò³Â룺2017. 340: 325-336

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sunshan4379: LS-EPI+1, ¸ÐлӦÖú£¡ 2017-05-05 19:51:14
Fabrication of niobium-based oxides/oxynitrides/nitrides and their applications in dye-sensitized solar cells and anaerobic digestion
×÷Õß:Zhang, TH (Zhang, Taihong)[ 1 ] ; Yun, SN (Yun, Sining)[ 1 ] ; Li, X (Li, Xue)[ 1 ] ; Huang, XL (Huang, Xinlei)[ 1 ] ; Hou, YZ (Hou, Yuzhi)[ 1 ] ; Liu, YF (Liu, Yanfang)[ 1 ] ; Li, J (Li, Jing)[ 1 ] ; Zhou, X (Zhou, Xiao)[ 1 ] ; Fang, W (Fang, Wen)[ 1 ]
JOURNAL OF POWER SOURCES
¾í: 340  Ò³: 325-336
DOI: 10.1016/j.jpowsour.2016.11.082
³ö°æÄê: FEB 1 2017
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Transition metal compounds (TMCs), as a representative family of functional materials, have attracted great attention in the field of renewable energy. Herein, Nb3.49N4.56O0.44 and NbN are prepared from the nitridation of NbO2 in an NH3 atmosphere. These dual-functional Nb-based compounds were applied to dye-sensitized solar cells (DSSCs) and anaerobic digestion (AD), and the efficiency and stability of these DSSCs and AD systems were systematically evaluated. The Nb3.49N4.56O0.44 counter electrode (CE) exhibited considerable electrocatalytic activity and stability in I-3(-) reduction in DSSCs, achieving photovoltaic performance comparable with Pt (6.36% vs. 7.19%). Furthermore, as accelerants, Nb-based compounds can greatly improve the AD environment, increasing substrate utilization and decreasing the hazards in the digestate. Compared with the control sample (409.2 mL/g.VS and 29.55%), substantially higher cumulative biogas production (437.1-522.7 mL/g.VS) and chemical oxygen demand removal rates (56.08%-65.19%) were achieved using Nb-based accelerants in the AD system. The nitridation technique is an effective and general means of converting Nb-based oxides into oxynitrides and nitrides. The Nb-based compounds with high electrocatalytic activities showed promise for DSSCs applications, while greatly enhancing the biodegradability of the AD system as accelerants. These findings could pave the way for multifunctional applications of TMCs in renewable energy fields. (C) 2016 Elsevier B.V. All rights reserved.
¹Ø¼ü´Ê
×÷Õ߹ؼü´Ê:Nb-based compounds; Counter electrodes; Accelerants; Dye-sensitized solar cells; Anaerobic digestion
KeyWords Plus:COUNTER ELECTRODE CATALYSTS; SUPPORTED HAFNIUM OXYNITRIDE; OXYGEN REDUCTION REACTION; WASTE-WATER TREATMENT; MICROBIAL FUEL-CELL; CO-DIGESTION; HIGH-PERFORMANCE; NONNOBLE ELECTROCATALYST; BIOGAS PRODUCTION; HIGH-EFFICIENCY
×÷ÕßÐÅÏ¢
ͨѶ×÷ÕßµØÖ·: Yun, SN (ͨѶ×÷Õß)
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ        Xian Univ Architecture & Technol, Sch Mat & Mineral Resources, FML, Xian 710055, Shaanxi, Peoples R China.
µØÖ·:
ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ        [ 1 ] Xian Univ Architecture & Technol, Sch Mat & Mineral Resources, FML, Xian 710055, Shaanxi, Peoples R China
µç×ÓÓʼþµØÖ·:yunsining@xauat.edu.cn
»ù½ð×ÊÖúÖÂл
»ù½ð×ÊÖú»ú¹¹        ÊÚȨºÅ
National Science & Technology Pillar Program during the Twelfth Five-year Plan Period        
2012BAD47B02
NSFC        
51672208
Sci-Tech R&D Program of Shaanxi Province        
2010K01-120
2015JM5183
Shaanxi Provincial Department of Education        
2013JK0927
SRF for ROCS, SEM          
²é¿´»ù½ð×ÊÖúÐÅÏ¢   
³ö°æÉÌ
ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Àà±ð / ·ÖÀà
Ñо¿·½Ïò:Chemistry; Electrochemistry; Energy & Fuels; Materials Science
Web of Science Àà±ð:Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary
ÎÄÏ×ÐÅÏ¢
ÎÄÏ×ÀàÐÍ:Article
ÓïÖÖ:English
Èë²ØºÅ: WOS:000392771900038
ISSN: 0378-7753
eISSN: 1873-2755
ÆäËûÐÅÏ¢
IDS ºÅ: EI8QG
Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 84
Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 0
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2Â¥: Originally posted by skyÆÑ¹«Ó¢ at 2017-05-04 10:33:47
Fabrication of niobium-based oxides/oxynitrides/nitrides and their applications in dye-sensitized solar cells and anaerobic digestion
×÷Õß:Zhang, TH (Zhang, Taihong) ; Yun, SN (Yun, Sining) ; Li, X  ...

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