Earth-abundant and nano-micro composite catalysts of Fe3O4@reduced graphene oxide for green and economical mesoscopic photovoltaic devices with high efficiencies up to 9%

doi:10.1039/c5ta06525a

	Earth-abundant and nano-micro composite catalysts of Fe3O4@reduced graphene oxide for green and economical mesoscopic photovoltaic devices with high efficiencies up to 9%
	Zhou, Huawei 2; Yin, Jie 2; Nie, Zhonghao 2; Yang, Zhaojin 2; Li, Dongjie 2; Wang, Junhu 1; Liu, Xin 1; Jin, Changzi 1; Zhang, Xianxi 2; Ma, Tingli 3
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2016
卷号	4 期号:1 页码:67-73
ISSN号	2050-7488
DOI	10.1039/c5ta06525a
文献子类	Article
英文摘要	The ideal liquid-solid heterogeneous electrocatalysis should have not only high catalytic activity but also free electron transport. However, preparing a single catalyst that simultaneously possesses both advantages has proven to be challenging. Herein, we prepared nano-micro composite catalysts (NMCCs) composed of highly dispersed Fe3O4 nanoparticles fixed on reduced graphene oxide (RGO) sheets (namely Fe3O4@RGO-NMCC) as the counter electrode (CE) in dye-sensitized solar cells (DSCs). Compared with the Fe3O4 or RGO CE, the Fe3O4@RGO-NMCC CE exhibited improved activity and reversibility for the catalytic reduction of triiodide ions (I-3(-)) to iodide ions (I-). Notably, DSCs using rigid and flexible Fe3O4@RGO-NMCC CEs achieved high PCEs up to 9% and 8% on fluorine-doped tin oxide (FTO)/glass substrates and flexible polymer substrates, respectively. These values are, to our knowledge, some of the highest reported efficiencies for DSCs based on a flexible Pt-free CE. We ascribed the superior catalytic performance of Fe3O4@RGO-NMCC to faster electron hopping between Fe2+ and Fe3+ and free electron transport by broad RGO sheets. Finally, Fe3O4@RGO-NMCC exhibited good stability in the practical application of DSCs because Fe3O4 nanoparticles were chemically bonded to the surface of RGO. Our work here will be of great interest for fundamental research and practical applications of Fe3O4 in lithium batteries, splitting water and magnetic fields.
WOS关键词	SENSITIZED SOLAR-CELLS ; FREE COUNTER ELECTRODES ; METAL-FREE CATHODES ; LOW-COST ; GRAIN-BOUNDARIES ; IRON-OXIDE ; NANOPLATELETS
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000366825300005
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171540]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Yin, Jie
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China 2.Liaocheng Univ, Coll Mat Sci & Engn, Sch Chem & Chem Engn, Shandong Prov Key Lab Chem Energy Storage & Novel, Liaocheng 252059, Peoples R China 3.Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, Kitakyushu, Fukuoka 8080196, Japan
推荐引用方式 GB/T 7714	Zhou, Huawei,Yin, Jie,Nie, Zhonghao,et al. Earth-abundant and nano-micro composite catalysts of Fe3O4@reduced graphene oxide for green and economical mesoscopic photovoltaic devices with high efficiencies up to 9%[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(1):67-73.
APA	Zhou, Huawei.,Yin, Jie.,Nie, Zhonghao.,Yang, Zhaojin.,Li, Dongjie.,...&Ma, Tingli.(2016).Earth-abundant and nano-micro composite catalysts of Fe3O4@reduced graphene oxide for green and economical mesoscopic photovoltaic devices with high efficiencies up to 9%.JOURNAL OF MATERIALS CHEMISTRY A,4(1),67-73.
MLA	Zhou, Huawei,et al."Earth-abundant and nano-micro composite catalysts of Fe3O4@reduced graphene oxide for green and economical mesoscopic photovoltaic devices with high efficiencies up to 9%".JOURNAL OF MATERIALS CHEMISTRY A 4.1(2016):67-73.