Enhancement of thermoelectric performance of Cu2Se by K doping

Zhu, Zheng; Zhang, Yuewen; Song, Hang; Li, Xinjian

doi:10.1007/s00339-018-2299-5

Cited by 31 publications

(11 citation statements)

References 39 publications

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“…Similar results are founded in Cu 2 Se materials with other alkali metal dopants. Zheng Zhu et al [ 43 , 44 ] get the same nanopore microstructure in the Na and K doped Cu 2 Se bulk materials through the same synthesis approaches as Li doped samples. ZT values of 2.1 at 973 K and 1.19 at 773 K were achieved for Cu 1.96 Na 0.04 Se and Cu 1.97 K 0.03 Se respectively.…”

Section: Doping By Group Ia and Iia Elementsmentioning

confidence: 99%

Doping Effect on Cu2Se Thermoelectric Performance: A Review

et al. 2020

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Cu2Se, owing to its intrinsic excellent thermoelectric (TE) performance emerging from the peculiar nature of “liquid-like” Cu+ ions, has been regarded as one of the most promising thermoelectric materials recently. However, the commercial use is still something far from reach unless effective approaches can be applied to further increase the figure of merit (ZT) of Cu2Se, and doping has shown wide development prospect. Until now, the highest ZT value of 2.62 has been achieved in Al doped samples, which is twice as much as the original pure Cu2Se. Herein, various doping elements from all main groups and some transitional groups that have been used as dopants in enhancing the TE performance of Cu2Se are summarized, and the mechanisms of TE performance enhancement are analyzed. In addition, points of great concern for further enhancing the TE performance of doped Cu2Se are proposed.

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Section: Doping By Group Ia and Iia Elementsmentioning

confidence: 99%

Doping Effect on Cu2Se Thermoelectric Performance: A Review

et al. 2020

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“…Temperature‐dependent figure of merit for some efficient liquid‐like thermoelectric materials: here magenta, orange and violet colors presents the Cu 2 S‐based, 54–68 Cu 2 Se‐based 38,50,69–89 and Cu 2 Te‐based 69,81,90–102 materials respectively.…”

Section: Liquid‐like Cu2x‐based Thermoelectric Materialsmentioning

confidence: 99%

Recent advances, challenges, and perspective of copper‐based liquid‐like thermoelectric chalcogenides: A review

Basit

Xin

Murtaza

et al. 2023

EcoMat

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As a group of emerging liquid‐like thermoelectric materials for waste heat recovery into useful energy, di‐chalcogenides Cu2(S, Se, Te) have been considered as superionic thermoelectric materials. Due to their highly disordered degree of Cu‐ion in the crystal lattice, Cu2(S, Se, Te) compounds can exhibit ultralow thermal conductivity, and in the meantime, their rigid sublattice can decently maintain the electrical performance, making them distinct from other state‐of‐the‐art thermoelectric materials. This review summarizes the well‐designed strategies to realize the impressive performance in thermoelectric materials and their modules by linking the adopted approaches such as defect engineering, interfaces, nano‐porous inclusions, thin films, dislocations, nano‐inclusions, and polycrystalline bulks etc., with the moderate design of the device. Some recent reports are selected to outline the fundamentals, underlined challenges, outlooks, and future development of Cu2(S, Se, Te) liquid‐like thermoelectric materials. We expect that this review covers the needs of future researchers in choosing some potential materials to explore thermoelectricity and other efficient energy conversion technologies.image

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“…Binary copper and silver chalcogenides have excellent thermoelectric characteristics, which continue to be the subjects of intense research [2,4,82,83,109,139,[164][165][166][167]. Over the past 5 years, as examples, we can mention the works [12,14,17,31,39,99,106,129,168,169] on Cu 2-δ S, the works [15,16,165,167,[170][171][172][173][174][175][176][177][178] on Cu 2−δ Se, the works [110,[179][180][181][182][183][184][185] on Cu 2−δ Te, the works [186][187][188][189][190] on Ag 2+δ Se, the works [191][192]…”

Section: Seebeck Coefficient and Thermal Conductivity 321 Seebeck Effectmentioning

confidence: 99%

Some Thermoelectric Phenomena in Copper Chalcogenides Replaced by Lithium and Sodium Alkaline Metals

et al. 2021

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This review presents thermoelectric phenomena in copper chalcogenides substituted with sodium and lithium alkali metals. The results for other modern thermoelectric materials are presented for comparison. The results of the study of the crystal structure and phase transitions in the ternary systems Na-Cu-S and Li-Cu-S are presented. The main synthesis methods of nanocrystalline copper chalcogenides and its alloys are presented, as well as electrical, thermodynamic, thermal, and thermoelectric properties and practical application. The features of mixed electron–ionic conductors are discussed. In particular, in semiconductor superionic copper chalcogenides, the presence of a “liquid-like phase” inside a “solid” lattice interferes with the normal propagation of phonons; therefore, superionic copper chalcogenides have low lattice thermal conductivity, and this is a favorable factor for the formation of high thermoelectric efficiency in them.

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Enhancement of thermoelectric performance of Cu2Se by K doping

Cited by 31 publications

References 39 publications

Doping Effect on Cu2Se Thermoelectric Performance: A Review

Doping Effect on Cu2Se Thermoelectric Performance: A Review

Recent advances, challenges, and perspective of copper‐based liquid‐like thermoelectric chalcogenides: A review

Some Thermoelectric Phenomena in Copper Chalcogenides Replaced by Lithium and Sodium Alkaline Metals

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