High power factor n-type Ag<sub>2</sub>Se/SWCNTs hybrid film for flexible thermoelectric generator

Geng, Jixin; Wu, Bo; Hou, Chengyi; Li, Yaogang; Wang, Hongzhi; Zhang, Qinghong

doi:10.1088/1361-6463/ac10db

Cited by 21 publications

(18 citation statements)

References 39 publications

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“…Geng et al. [ 156 ] fabricated Ag 2 Se/single‐wall carbon nanotube (SWCNTs) hybrid thin films. The films have special bridging structures and phase interfaces between SWCNTs and Ag 2 Se NWs, achieving a PF of ≈1030 µW m −1 K −2 at 300 K. A 6‐leg thermoelectric generator provides an open voltage of ≈40 mV and a power output of 2.36 µW under ∆ T = 50 K.…”

Section: Ag2q‐based Flexible or Hetero‐shaped Thermoelectric Devicesmentioning

confidence: 99%

“…By elaborately controlling the morphology of Ag 2 Se and the interfacial structures, high PF and output performance can be achieved. [152][153][154][155][156][157][158][159][160][161][162] The materials and performance of several Ag 2 Se-based composite flexible thermoelectric devices are listed in Table 4.…”

Section: Flexible Thermoelectric Generators Based On Ag 2 Se-organic ...mentioning

confidence: 99%

“…The assembled 4-leg thermoelectric generator yields a maximum output power up to 3.2 µW (ΔT = 30 K), corresponding to the maximum power density of www.advmat.de www.advancedsciencenews.com 22.0 W m −2 . Geng et al [156] fabricated Ag 2 Se/single-wall carbon nanotube (SWCNTs) hybrid thin films. The films have special bridging structures and phase interfaces between SWCNTs and Ag 2 Se NWs, achieving a PF of ≈1030 µW m −1 K −2 at 300 K. A 6-leg thermoelectric generator provides an open voltage of ≈40 mV and a power output of 2.36 µW under ΔT = 50 K.…”

Section: Flexible Thermoelectric Generators Based On Ag 2 Se-organic ...mentioning

confidence: 99%

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Ag₂Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

et al. 2022

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should have a high electrical conductivity (σ), a high Seebeck coefficient (S), and a low thermal conductivity (κ). [6][7][8][9] Cu 2 Q-and Ag 2 Q-based (Q = S, Se, Te) chalcogenides are exemplified with partially decoupled electrical and thermal transports. Over the past decade, Cu 2 Q materials have been widely investigated, showcasing remarkable zT values (around 2.0) at high temperatures. [10][11][12][13][14] As the homologous compounds sharing some common features, Ag 2 Q-based silver chalcogenides have arisen as a new spotlight in thermoelectrics (Figure 1) in recent years. Notably, the high zT values near unity of Ag 2 Se [15][16][17] make it a potential candidate for room-temperature thermoelectric application. In fact, Ag 2 Q compounds are "old" materials whose discovery can be traced back to the 19th century. [18][19][20] Their thermoelectric properties were first reported in the 1940s-1960s during which decent performance of Ag 2 Se and Ag 2 Te was unveiled. [21][22][23][24][25][26] After that, the study on Ag 2 Q had faded out over decades accompanying the low ebb of thermoelectric research. [27,28] Upon the turn of the century, especially over the last 10 years, the revival has come for thermoelectrics, bringing about great progress in transport theories, [29][30][31][32][33] advanced synthesis, [34][35][36][37] and characterization techniques, [38][39][40] and even the research paradigm. [41][42][43] All these progresses have boosted zT from 1 to 2 in not a few new or old thermoelectric materials. [44][45][46][47][48] In the same period, the booming of flexible/wearable electronics necessitates thermoelectric materials having both high performance and deformability at room temperature. [49][50][51][52] All these factors inspire people to revisit Ag 2 Q-based materials.Ag 2 Q-based materials exhibit a low lattice thermal conductivity originating from the large disorder or even liquid-like behavior of Ag ions. [53][54][55][56] They tend to show n-type conduction with a high electron mobility. [15,57,58] Apart from the thermoelectric properties, an exceptional room-temperature plasticity has been found in Ag 2 S-based materials (Figure 1), [59] which is quite rare and valuable for inorganic semiconductors. [60] Beyond the binary compounds, several ternary and even quaternary Ag 2 (S, Se, Te) alloys have been developed, exhibiting both high zT values and excellent plastic deformability. [54,[61][62][63] In addition, CuAgQ materials, the intermediate compounds between Ag 2 Q and Cu 2 Q, have also received wide attention as promising thermoelectric materials. [64][65][66][67] Considering the new, intriguing scientific issues and great application prospects of Ag 2 Q-based silver chalcogenide thermoelectric materials, here in this review, we try to provide the Thermoelectric technology provides a promising solution to sustainable energy utilization and scalable power supply. Recently, Ag 2 Q-based (Q = S, Se, Te) silver chalcogenides have come forth as potential thermoelectric materials that are endowed wi...

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Section: Ag2q‐based Flexible or Hetero‐shaped Thermoelectric Devicesmentioning

confidence: 99%

Section: Flexible Thermoelectric Generators Based On Ag 2 Se-organic ...mentioning

confidence: 99%

Section: Flexible Thermoelectric Generators Based On Ag 2 Se-organic ...mentioning

confidence: 99%

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Ag₂Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

et al. 2022

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“…In the past decade, the development of new self-powered technologies has been driven by the growing demand for intelligent, lightweight, and flexible electronic devices and the fatal flaws of environmental pollution, inflexibility, limited lifetime, and frequent recharging of traditional energy supply devices such as lithium and nickel–zinc batteries. − In addition to well-known mechanical nanogenerators derived from Maxwell’s displacement current, thermoelectric (TE) generators can be woven, , embedded, and coated to enable the conversion of waste heat from the environment into clean electrical energy , and have proven to be practical devices for energy harvesting in combustion-driven vehicles, aircraft, homes, industries, and solar and microelectronic devices . Whether the performance of TE materials is excellent or not is determined by the dimensionless figure of merit ZT , − defined as S 2 σ T /κ, where T is the absolute temperature (K) and σ, S , and κ, respectively, represent the electrical conductivity (S cm –1 ), Seebeck coefficient (μV K –1 ), and thermal conductivity (W m –1 K –1 ) in the direction of heat flow. , High S and σ are sought in the field of organic TE materials, while low κ is expected in inorganic TE materials to obtain high properties.…”

Section: Introductionmentioning

confidence: 99%

Constructing A/B-Side Heterogeneous Asynchronous Structure with Ag₂Se Layers and Bushy-like PPy toward High-Performance Flexible Photo-Thermoelectric Generators

Yang

Jin

Huang

et al. 2022

ACS Appl. Mater. Interfaces

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The enthusiasm for environmental energy harvesting has triggered a boom in research on photo-thermoelectric generators (PTEGs), and the relevant applications are mainly focused on self-energy supply sensors owing to the limitations of their output performances. For this purpose, high-output hierarchical heterogeneous PTEGs were constructed by assembling separately optimized thermoelectric (TE) and photothermal (PT) layers. The pressure and temperature conditions of Ag2Se films during the pressing process were first explored, and the sample with the optimal performance and least defects was selected as the TE layer. At the same time, different morphologies of polypyrrole (PPy) PT layers were electrochemically synthesized. It is found that the three-dimensional structure of Bushy-PPy could effectively improve the light absorption and thus enhance the PT conversion performance. The final assembled PTEG can produce an output voltage of −9.03 mV and an output power of 3.53 μW under the irradiation of a near-infrared light source of 300 mW cm–2 without a cooling source, and it can also achieve considerable output power under visible light irradiation of different intensities. Combining its high retentions of electrical conductivity (99%) and output performance (97%) after 1000 bending-tension cycles, it is proven to be a promising next-generation wearable flexible energy harvesting device.

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“…Flexible thermoelectric generators (f-TEGs) can directly utilize the waste heat from human body and environment to generate electricity, [1][2][3][4][5] which shows great potential in the wearable field. For example, Zhou et al 6 proposed a wearable leaf-TEG that can directly harvest body's heat energy by vertically standing on skin.…”

Section: Introductionmentioning

confidence: 99%

Hydrogel-based printing strategy for high-performance flexible thermoelectric generators

Geng

Lin

et al. 2022

Nanoscale

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High power factor n-type Ag₂Se/SWCNTs hybrid film for flexible thermoelectric generator

Cited by 21 publications

References 39 publications

Ag₂Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

Ag₂Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

Constructing A/B-Side Heterogeneous Asynchronous Structure with Ag₂Se Layers and Bushy-like PPy toward High-Performance Flexible Photo-Thermoelectric Generators

Hydrogel-based printing strategy for high-performance flexible thermoelectric generators

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High power factor n-type Ag2Se/SWCNTs hybrid film for flexible thermoelectric generator

Cited by 21 publications

References 39 publications

Ag2Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

Ag2Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

Constructing A/B-Side Heterogeneous Asynchronous Structure with Ag2Se Layers and Bushy-like PPy toward High-Performance Flexible Photo-Thermoelectric Generators

Hydrogel-based printing strategy for high-performance flexible thermoelectric generators

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Product

Resources

About

High power factor n-type Ag₂Se/SWCNTs hybrid film for flexible thermoelectric generator

Ag₂Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

Ag₂Q‐Based (Q = S, Se, Te) Silver Chalcogenide Thermoelectric Materials

Constructing A/B-Side Heterogeneous Asynchronous Structure with Ag₂Se Layers and Bushy-like PPy toward High-Performance Flexible Photo-Thermoelectric Generators