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±¾ÈËÏ뿪¸ö¼ìË÷Ö¤Ã÷£¬ÎÄÕÂÐÅÏ¢ÈçÏ£º 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 лл´ó¼Ò£¡ |
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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 ²é¿´ÆÚ¿¯ÐÅÏ¢ ÕªÒª 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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