Multifunctional phase change composites based on biomass/MXene-derived hybrid scaffolds for excellent electromagnetic interference shielding and superior solar/electro-thermal energy storage

Cao, Yang; Zeng, Ziheng; Huang, Danyuan; Chen, Ying; Zhang, Li; Sheng, Xinxin

doi:10.1007/s12274-022-4626-6

Cited by 105 publications

(32 citation statements)

References 58 publications

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“…Therefore, they are promising as practical flexible TE devices. Among them, transition-metal carbides or nitrides (MXenes) have been widely investigated in areas such as energy storage, − catalysts, − electromagnetic shielding, − and sensors, among others, since their discovery in 2011, because of their excellent electrochemical activity, hydrophilicity, electrical conductivity, etc. , MXenes are conventionally prepared by the selective removal of A atoms from the layered parent ternary carbide compounds (MAX), e.g., Ti 3 AlC 2 (MAX) → Ti 3 C 2 T x (MXene), where T is the surface termination groups, such as −O, −OH, −F, and −Cl. , The general formula of MAX is M n +1 AX n , where M is transition-metal atoms (e.g., Ti, Nb, Mo, Cr, or Ta), A is atoms belonging to the group 13 and 14 elements in the periodic table (e.g., Al, Si, S, P, Sn, or Ge), X is C and/or N, and n = 1, 2, or 3. , In MAX, each X atomic layer is sandwiched by two M atomic layers, while the A atomic layer is sandwiched by two M n +1 X n layers, wherein M–A metal bonding is weaker than M–X covalent bonding. − To date, more than 30 species of MXenes, such as Nb 2 CT x , Ti 3 NCT x , etc., have been developed. Among them, Ti 3 C 2 T x is lightweight, nontoxic, and flexible and thus is the most widely investigated.…”

Section: Introductionmentioning

confidence: 99%

MXene Nanosheet/Organics Superlattice for Flexible Thermoelectrics

Wang

Chen

Cao

et al. 2022

ACS Appl. Nano Mater.

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Two-dimensional (2D) materials with outstanding electronic transport properties are rigid against bending because of strong in-plane covalent bonding and intrinsically flexible because of the lack of out-of-plane constraint and thus are considered to be promising for flexible thermoelectrics (TEs). As a typical 2D material, MXene, however, exhibited a restricted TE performance because the termination groups and guest molecules in MXene nanosheets introduced by acid etching and reassembly deteriorate intra/interflake conduction. This work realized increases in both the carrier concentration and intra/interflake mobility by the construction of a MXene nanosheet/organic superlattice (SL) and composition engineering, attributed to electron injection, intercoupling strengthening, and defect reduction at the nanosheet edges. An electrical conductivity increased by 5 times, to 2.7 × 105 S m–1, led to power factors of up to ∼33 μW m–1 K–2, which is above the state-of-the-art for similar materials, almost by a factor of 10. A TE module comprising four SL film legs could yield 58.6 nW power at a temperature gradient of 50 K. Additionally, both the annealed film and the corresponding module exhibited excellent reproducibility and stability. Our results provide a strategy to tailor the TE performance of 2D-material films through SL construction and composition engineering.

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Section: Introductionmentioning

confidence: 99%

MXene Nanosheet/Organics Superlattice for Flexible Thermoelectrics

Wang

Chen

Cao

et al. 2022

ACS Appl. Nano Mater.

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“…5 Due to its excellent physical and chemical properties, it is widely used in energy storage, 6 photocatalysis, 7 electromagnetic shielding, 8 and other fields. 9,10 The enhancement of the coating protection ability through the use of MXene as the filler has also been reported. However, the natural restacking tendency of MXene nanosheets limits its performance.…”

Section: Introductionmentioning

confidence: 96%

“…The incorporation of nanomaterials into WEP coatings is an effective solution to improve their corrosion and/or friction resistance. − MXene is a two-dimensional (2D) transition-metal carbide/nitride/carbonitride nanomaterial that was discovered in 2011 . Due to its excellent physical and chemical properties, it is widely used in energy storage, photocatalysis, electromagnetic shielding, and other fields. , The enhancement of the coating protection ability through the use of MXene as the filler has also been reported. However, the natural restacking tendency of MXene nanosheets limits its performance.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Fabrication of an MXene-ZrP@PDA Heterojunction for Enhanced Corrosion/Wear Resistance of Waterborne Epoxy Coatings

et al. 2022

Ind. Eng. Chem. Res.

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Two-dimensional (2D) materials have a wide range of applications in the field of corrosion protection and wear resistance. The use of MXene (Ti 3 C 2 T x ) in epoxy coatings is limited due to its natural restacking tendency. Herein, MXene-ZrP@ PDA was obtained through the polydopamine (PDA) functionalization of a heterojunction composed of MXene and exfoliated αzirconium phosphate (α-ZrP). MXene-ZrP@PDA (MZP) was incorporated into a waterborne epoxy (WEP) coating to prepare an MZP/WEP composite coating. The results show that the corrosion rate of MZP/WEP (1.70 × 10 −4 mpy) is one order of magnitude lower than that of blank WEP (1.28 × 10 −3 mpy). Moreover, the average coefficient of friction (COF) of the MZP/WEP composite coating decreased by 82.06% compared with that of the blank WEP coating. The results reveal that the addition of MXene-ZrP@ PDA can significantly improve the anticorrosion/antiwear properties of WEP. Our results provide new ideas for the application of MXene/ZrP in the field of metal protection.

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“…However, the structure of the MXene foam was not stable, so it was impossible to provide the composite PCMs with the shape stabilization property. The researchers, including Wang et al, 29 Sheng et al, 30 Lu et al, 31 and Cao et al, 32 used different biomass polymers or melamine foams to fix the MXene nanosheets to prepare a stable thermal conduction path. Although their samples presented good shape stabilization properties, the improvement of the thermal conductivity of composite PCMs was very slight due to the limitation of low thermal conductivity of the biomass materials and melamine foam.…”

Section: Introductionmentioning

confidence: 99%

Highly Stable MXene-Based Phase Change Composites with Enhanced Thermal Conductivity and Photothermal Storage Capability

Chen

et al. 2022

ACS Appl. Energy Mater.

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To improve the solar energy storage efficiency and thermal conductivity, we developed stable 3D-Ti 3 C 2 T x frameworksupported composites as phase change materials (FCPCMs) fabricated by the spatial confining forced network assembly (SCFNA) method. The 3D-Ti 3 C 2 T x framework was constructed by decomposition of a compressed mixture of NH 4 HCO 3 and Ti 3 C 2 T x nanosheets. The controllable porous structure of the 3D-Ti 3 C 2 T x framework and hydrogen bonds between -OH groups (or -F groups) on the surface of MXene and the long chain of PEG benefited the good impregnation of PEG into the framework with good compatibility. Therefore, the developed PCM composites exhibited satisfactory phase change enthalpy in the range of 93.36− 119.11 J/g. Compared with PEG8000, the thermal conductivity of the composite with loading 40 wt % of 3D-Ti 3 C 2 T x increased from 0.166 to 1.733 W/(m•K). The improvement of the thermal conductivity is mainly derived from the thermal conduction path provided by the stable 3D-Ti 3 C 2 T x framework. Based on the spatial confining forced network assembly, FCPCMs presented good shape stabilization and thermal reliability in 200 melting−freezing cycles. Benefiting from the construction of the 3D-Ti 3 C 2 T x thermal conductivity path, the fast temperature increase rate under light irradiation is the highlight of FCPCMs. It is noted that FCPCMs exhibit both good photothermal conversion and energy storage efficiency, with the photothermal conversion and storage performance η as high as 95%. Consequently, the developed PCM composites in this work exhibited tremendous application potential in the solar energy utilization field. KEYWORDS: 3D-Ti 3 C 2 T x framework, phase change materials, photothermal conversion and energy storage, thermal conductivity, spatial confining forced network assembly

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Multifunctional phase change composites based on biomass/MXene-derived hybrid scaffolds for excellent electromagnetic interference shielding and superior solar/electro-thermal energy storage

Cited by 105 publications

References 58 publications

MXene Nanosheet/Organics Superlattice for Flexible Thermoelectrics

MXene Nanosheet/Organics Superlattice for Flexible Thermoelectrics

One-Pot Fabrication of an MXene-ZrP@PDA Heterojunction for Enhanced Corrosion/Wear Resistance of Waterborne Epoxy Coatings

Highly Stable MXene-Based Phase Change Composites with Enhanced Thermal Conductivity and Photothermal Storage Capability

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