气候变化领域集成服务门户(CCPortal): Skutterudite with graphene-modified grain-boundary complexion enhances zT enabling high-efficiency thermoelectric device

CCPortal

DOI	10.1039/c6ee02467j
	Skutterudite with graphene-modified grain-boundary complexion enhances zT enabling high-efficiency thermoelectric device
	Zong P.-A.; Hanus R.; Dylla M.; Tang Y.; Liao J.; Zhang Q.; Snyder G.J.; Chen L.
发表日期	2017
ISSN	17545692
起始页码	183
结束页码	191
卷号	10 期号:1
英文摘要	Skutterudite materials are widely considered for thermoelectric waste heat recovery. While the skutterudite structure effectively scatters the high frequency phonons, grain-boundary engineering is needed to further reduce the thermal conductivity beyond simply decreasing grain size. Here, we show that reduced graphene oxide (rGO) increases the grain boundary thermal resistivity by a factor of 3 to 5 compared to grain boundaries without graphene. Wrapping even micron sized grains with graphene leads to such a significant reduction in the thermal conductivity that a high thermoelectric figure of merit zT = 1.5 was realized in n-type YbyCo4Sb12, while a zT of 1.06 was achieved in p-type CeyFe3CoSb12. A 16 leg thermoelectric module was made by using n- and p-type skutterudite-graphene nanocomposites that exhibited conversion efficiency 24% higher than a module made without graphene. Engineering grain boundary complexions with 2-D materials introduces a new strategy for advanced thermoelectric materials. © The Royal Society of Chemistry 2017.
英文关键词	Efficiency; Grain boundaries; Graphene; Graphene devices; Skutterudites; Thermal Engineering; Thermoelectric equipment; Thermoelectricity; Waste heat; Waste heat utilization; Grain boundary engineering; Graphene nanocomposites; Reduced graphene oxides (RGO); Skutterudite materials; Skutterudite structures; Thermo-Electric materials; Thermo-electric modules; Thermoelectric figure of merit; Thermal conductivity; cobalt; composite; electrical resistivity; grain boundary; grain size; reduction; technical efficiency; thermal conductivity
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/190583
作者单位	State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, United States; Shanghai Institute of Materials Genome, Shanghai, 200444, China
推荐引用方式 GB/T 7714	Zong P.-A.,Hanus R.,Dylla M.,et al. Skutterudite with graphene-modified grain-boundary complexion enhances zT enabling high-efficiency thermoelectric device[J],2017,10(1).
APA	Zong P.-A..,Hanus R..,Dylla M..,Tang Y..,Liao J..,...&Chen L..(2017).Skutterudite with graphene-modified grain-boundary complexion enhances zT enabling high-efficiency thermoelectric device.Energy & Environmental Science,10(1).
MLA	Zong P.-A.,et al."Skutterudite with graphene-modified grain-boundary complexion enhances zT enabling high-efficiency thermoelectric device".Energy & Environmental Science 10.1(2017).