Interfacial modulation to achieve low lattice thermal conductivity and enhanced thermoelectric performance in n-type Mg3(Sb, Bi)2-based materials via graphene and MXene

Tian, Bang-Zhou; Liao, Yi-Yan; Xu, Fang; Qiu, Xiao-Ling; Zhang, Fu-Jie; Ang, Ran

doi:10.1039/d3ta05238a

Cited by 6 publications

(1 citation statement)

References 48 publications

(58 reference statements)

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“…26 Moreover, improving the phonon transport performance is reported to be highly significant by generating a large interfacial thermal resistance at the grain boundary, such as nano-carbon additives ( i.e. , graphene nanoplatelets, 27 graphene 28 and carbon nanotube 29 ), which significantly reduces the κ L but also severely deteriorates the electrical transport properties.…”

Section: Introductionmentioning

confidence: 99%

Magnetism-induced diffuse scattering effect triggers excellent thermoelectric performance

Song,

Sun,

Yang

et al. 2024

Energy Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

Magnetism-induced diffuse scattering effect triggers excellent thermoelectric performance

Song,

Sun,

Yang

et al. 2024

Energy Environ. Sci.

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Microstructure Optimization in the Shear‐Exfoliated Bi₆Cu₂Se₄O₆ through Introducing Reduced Graphene Oxide Leads to Wide‐Ranged Thermoelectric Performance

Zheng,

Wen,

Wang

et al. 2024

Adv Funct Materials

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Bi6Cu2Se4O6 is considered as an ideal n‐type thermoelectric material to pair with p‐type BiCuSeO for preparing oxyselenide‐based thermoelectric devices, but its thermoelectric performance is limited by poor electrical conductivity. In this research, the reduced graphene oxide (rGO) nanosheets are introduced into Bi6Cu2Se3.6Cl0.4O6 matrix through liquid‐phase shear exfoliation to modify the microstructure. rGO can insert into matrix grains as intercalations, or embed into grain boundaries as wetting phase, and prompt grain alignment, which contributes to the significantly enhanced carrier mobility, thus leading to an improvement in electrical conductivity from ≈15 S cm−1 to ≈230 S cm−1 at 303 K. Whereafter, the effective donor dopant Nb is chosen to substitute Bi. The carrier concentration is increased without damaging the carrier mobility, resulting in a further improved electrical conductivity of ≈840 S cm−1 at 303 K. Lattice thermal conductivity is also suppressed owing to the intensive phonon scattering by point defects and grain boundaries. Ultimately, a record‐breaking peak ZT ≈0.5 (873 K) and average ZT ≈0.3 (303–873 K) can be achieved in Bi5.91Nb0.09Cu2Se3.6Cl0.4O6 + 0.5% rGO. The microstructure optimization method in this research effectively improves thermoelectric performance, and is anticipated to be applied in other thermoelectrics.

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Effects of introducing MXene on thermoelectric properties of Cu2Se alloys

Zhao,

Li,

et al. 2024

Journal of Alloys and Compounds

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Interfacial modulation to achieve low lattice thermal conductivity and enhanced thermoelectric performance in n-type Mg₃(Sb, Bi)₂-based materials via graphene and MXene

Abstract: Interfacial modulation has been considered an effective strategy to enhance the thermoelectric (TE) performance by decoupling thermal and electrical parameters.

Cited by 6 publications

References 48 publications

Magnetism-induced diffuse scattering effect triggers excellent thermoelectric performance

Magnetism-induced diffuse scattering effect triggers excellent thermoelectric performance

Microstructure Optimization in the Shear‐Exfoliated Bi₆Cu₂Se₄O₆ through Introducing Reduced Graphene Oxide Leads to Wide‐Ranged Thermoelectric Performance

Effects of introducing MXene on thermoelectric properties of Cu2Se alloys

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Interfacial modulation to achieve low lattice thermal conductivity and enhanced thermoelectric performance in n-type Mg3(Sb, Bi)2-based materials via graphene and MXene

Abstract: Interfacial modulation has been considered an effective strategy to enhance the thermoelectric (TE) performance by decoupling thermal and electrical parameters.

Cited by 6 publications

References 48 publications

Magnetism-induced diffuse scattering effect triggers excellent thermoelectric performance

Magnetism-induced diffuse scattering effect triggers excellent thermoelectric performance

Microstructure Optimization in the Shear‐Exfoliated Bi6Cu2Se4O6 through Introducing Reduced Graphene Oxide Leads to Wide‐Ranged Thermoelectric Performance

Effects of introducing MXene on thermoelectric properties of Cu2Se alloys

Contact Info

Product

Resources

About

Interfacial modulation to achieve low lattice thermal conductivity and enhanced thermoelectric performance in n-type Mg₃(Sb, Bi)₂-based materials via graphene and MXene

Microstructure Optimization in the Shear‐Exfoliated Bi₆Cu₂Se₄O₆ through Introducing Reduced Graphene Oxide Leads to Wide‐Ranged Thermoelectric Performance