High thermoelectric performance in Cu2Se/CDs hybrid materials

Hu, Qiujun; Zhang, Yan; Zhang, Yuewen; Li, Xinjian; Song, Hang

doi:10.1016/j.jallcom.2019.152204

Cited by 49 publications

(28 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The research on this field has been renewed and developed since the 1990s. In general, the Seebeck coefficient increases with an increase of the barrier height [54,55] while the electrical conductivity decreases [56][57][58]. In the presence of multiple potential barriers, the bipolar effect can be suppressed, decreasing the flow of minority charge carriers and reducing the decrease in the electrical conductivity [59][60][61][62].…”

Section: Energy Filteringmentioning

confidence: 99%

Recent Progress in Multiphase Thermoelectric Materials

Fortulan

Yamini

2021

Materials

View full text Add to dashboard Cite

Thermoelectric materials, which directly convert thermal energy to electricity and vice versa, are considered a viable source of renewable energy. However, the enhancement of conversion efficiency in these materials is very challenging. Recently, multiphase thermoelectric materials have presented themselves as the most promising materials to achieve higher thermoelectric efficiencies than single-phase compounds. These materials provide higher degrees of freedom to design new compounds and adopt new approaches to enhance the electronic transport properties of thermoelectric materials. Here, we have summarised the current developments in multiphase thermoelectric materials, exploiting the beneficial effects of secondary phases, and reviewed the principal mechanisms explaining the enhanced conversion efficiency in these materials. This includes energy filtering, modulation doping, phonon scattering, and magnetic effects. This work assists researchers to design new high-performance thermoelectric materials by providing common concepts.

show abstract

Section: Energy Filteringmentioning

confidence: 99%

Recent Progress in Multiphase Thermoelectric Materials

Fortulan

Yamini

2021

Materials

View full text Add to dashboard Cite

show abstract

“…Recently, carbon‐based materials have been exploited in Cu 2 Se materials to elevated S and reduced κ t for better TE performance. For example, Hu et al used carbon nanodots into Cu 2 Se that enhanced S and reduced κ t to ~290 μVK −1 and 0.45 Wm −1 K −1 , respectively, and consequently obtained ZT value of 1.98 at 973 K . In addition, Li et al used carbon‐coated‐boron nanoparticles in Cu 2 Se and reported ZT value of ~2.23 at 1000 K .…”

Section: High Performance Inorganic Te Materialsmentioning

confidence: 99%

“…221 In addition, Yang et al used nanostructuring technique that reduced κ lat up to ~0.2 Wm −1 K −1 , as a result obtained high ZT value of 1.82 at 850 K. 222 Recently, carbon-based materials have been exploited in Cu 2 Se materials to elevated S and reduced κ t for better TE performance. For example, Hu et al used carbon nanodots into Cu 2 Se that enhanced S and reduced κ t to ~290 μVK −1 and 0.45 Wm −1 K −1 , respectively, and consequently obtained ZT value of 1.98 at 973 K. 223 In addition, Li et al used carbon-coatedboron nanoparticles in Cu 2 Se and reported ZT value of ~2.23 at 1000 K. 224 Similarly, Li et al integrated graphene nanoplates into a Cu 2 Se matrix that reduce κ t to ~0.4 Wm −1 K −1 and as a result obtained ZT of ~2.44 at 873 K. 225 All these substantial improvements indicate that both SnSe and Cu 2 Se are a robust candidate for TE applications.…”

Section: Tin Selenide (Snse) and Copper Selenide (Cu 2 Se)mentioning

confidence: 99%

Inorganic thermoelectric materials: A review

et al. 2020

View full text Add to dashboard Cite

Summary Thermoelectric generator, which converts heat into electrical energy, has great potential to power portable devices. Nevertheless, the efficiency of a thermoelectric generator suffers due to inefficient thermoelectric material performance. In the last two decades, the performance of inorganic thermoelectric materials has been significantly advanced through rigorous efforts and novel techniques. In this review, major issues and recent advancements that are associated with the efficiency of inorganic thermoelectric materials are encapsulated. In addition, miscellaneous optimization strategies, such as band engineering, energy filtering, modulation doping, and low dimensional materials to improve the performance of inorganic thermoelectric materials are reported. The methodological reviews and analyses showed that all these techniques have significantly enhanced the Seebeck coefficient, electrical conductivity, and reduced the thermal conductivity, consequently, improved ZT value to 2.42, 2.6, and 1.85 for near‐room, medium, and high temperature inorganic thermoelectric material, respectively. Moreover, this review also focuses on the performance of silicon nanowires and their common fabrication techniques, which have the potential for thermoelectric power generation. Finally, the key outcomes along with future directions from this review are discussed at the end of this article.

show abstract

“…Mid-temperature Cu 2 Se-based [29][30][31][32][33][34][35], SnSe-based [36][37][38][39][40][41][42], PbTe-based [43][44][45][46][47][48][49][50][51] and GeTe-based materials [52][53][54][55][56][57][58], as summed up in Table 1, have been recorded with zT values close to 2 or higher. In general, better mid-temperature TE performance in Group-IV chalcogenides was observed.…”

Section: Background Of Mid-temperature Thermoelectric Materialsmentioning

confidence: 99%

An Overview of the Strategies for Tin Selenide Advancement in Thermoelectric Application

et al. 2021

View full text Add to dashboard Cite

Chalcogenide, tin selenide-based thermoelectric (TE) materials are Earth-abundant, non-toxic, and are proven to be highly stable intrinsically with ultralow thermal conductivity. This work presented an updated review regarding the extraordinary performance of tin selenide in TE applications, focusing on the crystal structures and their commonly used fabrication methods. Besides, various optimization strategies were recorded to improve the performance of tin selenide as a mid-temperature TE material. The analyses and reviews over the methodologies showed a noticeable improvement in the electrical conductivity and Seebeck coefficient, with a noticeable decrement in the thermal conductivity, thereby enhancing the tin selenide figure of merit value. The applications of SnSe in the TE fields such as microgenerators, and flexible and wearable devices are also discussed. In the future, research in low-dimensional TE materials focusing on nanostructures and nanocomposites can be conducted with the advancements in material science technology as well as microtechnology and nanotechnology.

show abstract

High thermoelectric performance in Cu2Se/CDs hybrid materials

Cited by 49 publications

References 50 publications

Recent Progress in Multiphase Thermoelectric Materials

Recent Progress in Multiphase Thermoelectric Materials

Inorganic thermoelectric materials: A review

An Overview of the Strategies for Tin Selenide Advancement in Thermoelectric Application

Contact Info

Product

Resources

About