Graphene network in copper sulfide leading to enhanced thermoelectric properties and thermal stability

Tang, Haida; Sun, Fu‐Hua; Dong, Jinfeng; Asfandiyar,; Zhuang, Hua‐Lu; Pan, Yu; Li, Jing‐Feng

doi:10.1016/j.nanoen.2018.04.058

Cited by 112 publications

(86 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most recently, we have studied the mechanism of Cu migration in liquidlike materials and found it is possible to greatly improve material's stability by introducing electronically-conducting but ion-blocking barriers [104]. Similarly, Tang et al [105] found that the incorporated graphene three dimensional (3D) network can provide another possibility to block the migration of Cu ions and to enhance the stability of Cu 2 S.…”

Section: Concerns About Cu Migration and Materials Stabilitymentioning

confidence: 99%

Copper chalcogenide thermoelectric materials

et al. 2018

View full text Add to dashboard Cite

Cu-based chalcogenides have received increasing attention as promising thermoelectric materials due to their high efficiency, tunable transport properties, high elemental abundance and low toxicity. In this review, we summarize the recent research progress on this large family compounds covering diamond-like chalcogenides and liquid-like Cu 2 X (X=S, Se, Te) binary compounds as well as their multinary derivatives. These materials have the general features of two sublattices to decouple electron and phonon transport properties. On the one hand, the complex crystal structure and the disordered or even liquid-like sublattice bring about an intrinsically low lattice thermal conductivity. On the other hand, the rigid sublattice constitutes the charge-transport network, maintaining a decent electrical performance. For specific material systems, we demonstrate their unique structural features and outline the structure-performance correlation. Various design strategies including doping, alloying, band engineering and nanostructure architecture, covering nearly all the material scale, are also presented. Finally, the potential of the application of Cu-based chalcogenides as high-performance thermoelectric materials is briefly discussed from material design to device development.

show abstract

Section: Concerns About Cu Migration and Materials Stabilitymentioning

confidence: 99%

Copper chalcogenide thermoelectric materials

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Both Zhao et al and Liu et al have reported the peak zT value of SnSe can be higher than 2 when the temperature is above 800 K. Meanwhile, most other results suggest the peak zT values of SnSe are at the temperature range lower than 800 K . When the temperature is between ≈800 and ≈1000 K, Cu 2 X, PbX (X = Te, Se, and S), SnTe as well as low‐cost and stable BiCuSeO are more attractive. Through nonequilibrium processing, Tan et al have achieved a record‐high zT value of 2.5 in Pb 0.98 Na 0.02 Te‐8%SrTe at 923 K. As a potential substitution for highly toxic PbTe, peak zT values of SnTe of ≈1.5 have also been widely reported .…”

Section: Introductionmentioning

confidence: 98%

“…b) Peak zT values of state‐of‐the‐art Cu 2 X‐based thermoelectric materials and their derivatives as a function of publication year. c) Maximum energy conversion efficiency (η max , estimated from peak zT values and corresponding T ) and d) material costs (in the unit of US$ kg −1 ) of Cu 2 Te, Cu 2 Se and Cu 2 S‐based thermoelectric materials, respectively …”

Section: Introductionmentioning

confidence: 99%

“…However, most these developed Cu 2 X‐based materials are unstable under some certain application conditions . Since the revisiting the liquid‐like behavior of Cu 2 Se leading to low κ l (<0.6 W m −1 K −1 at 1000 K) several years ago, significant progress has been witnessed in Cu 2 X‐based thermoelectric materials and their derivatives, as summarized in Figure b. Detailed thermoelectric performance of Cu 2 X‐based thermoelectric materials are summarized in Table 1 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Promising and Eco‐Friendly Cu₂X‐Based Thermoelectric Materials: Progress and Applications

et al. 2020

View full text Add to dashboard Cite

Due to the nature of their liquid‐like behavior and high dimensionless figure of merit, Cu2X (X = Te, Se, and S)‐based thermoelectric materials have attracted extensive attention. The superionicity and Cu disorder at the high temperature can dramatically affect the electronic structure of Cu2X and in turn result in temperature‐dependent carrier‐transport properties. Here, the effective strategies in enhancing the thermoelectric performance of Cu2X‐based thermoelectric materials are summarized, in which the proper optimization of carrier concentration and minimization of the lattice thermal conductivity are the main focus. Then, the stabilities, mechanical properties, and module assembly of Cu2X‐based thermoelectric materials are investigated. Finally, the future directions for further improving the energy conversion efficiency of Cu2X‐based thermoelectric materials are highlighted.

show abstract

“…The thermoelectric research on copper sulfides is also extended for composite materials . Very recently, Tang et al introduced the 3D graphene into copper sulfide matrix . The graphene‐Cu 2− x S composites were fabricated by a combined process of mechanical alloying and SPS.…”

Section: Strategies To Improve Thermoelectric Properties Of Copper Sumentioning

confidence: 99%

Copper Sulfides: Earth‐Abundant and Low‐Cost Thermoelectric Materials

Mulla

Rabinal

2019

Energy Tech

View full text Add to dashboard Cite

The depletion of nonrenewable energy sources insisted the search for new types of energy solutions. Thermoelectric conversion is one possible energy solution which converts waste heat into useful electricity. In the past several years, thermoelectric research developed many novel materials. Among these, most of the practically useful materials with better performance are based on Bi, Pb, Te, and Sb, but are toxic and expensive. There is a need of earth‐abundant, low‐cost, and less‐toxic compounds with superior thermoelectric performance so as to realize the large‐scale commercial applications. Recent studies have identified eco‐friendly thermoelectric materials based on the alloys of copper and sulfur, suggesting an alternative to the well‐established expensive thermoelectric materials. These compounds exhibit interesting electronic properties with better thermoelectric efficiency (zT). The structural properties permit to decouple electrical and thermal conductivities, which is an essential requirement to get improved efficiency. Several approaches, such as phase tuning, doping, nanostructure/microstructure designing, compound formation, etc., are chosen to increase the performance. On the whole, the present review summarizes the strategies and techniques that have been adopted to improve the thermoelectric behavior of copper sulfides and its compounds.

show abstract

Graphene network in copper sulfide leading to enhanced thermoelectric properties and thermal stability

Cited by 112 publications

References 41 publications

Copper chalcogenide thermoelectric materials

Copper chalcogenide thermoelectric materials

Promising and Eco‐Friendly Cu₂X‐Based Thermoelectric Materials: Progress and Applications

Copper Sulfides: Earth‐Abundant and Low‐Cost Thermoelectric Materials

Contact Info

Product

Resources

About

Graphene network in copper sulfide leading to enhanced thermoelectric properties and thermal stability

Cited by 112 publications

References 41 publications

Copper chalcogenide thermoelectric materials

Copper chalcogenide thermoelectric materials

Promising and Eco‐Friendly Cu2X‐Based Thermoelectric Materials: Progress and Applications

Copper Sulfides: Earth‐Abundant and Low‐Cost Thermoelectric Materials

Contact Info

Product

Resources

About

Promising and Eco‐Friendly Cu₂X‐Based Thermoelectric Materials: Progress and Applications