High-contrast, reversible change of thermal conductivity in hexagonal nickel-iron sulfides

Zhang, X.K.; Li, J.Y.; Lin, Jiazao; Tong, P.; Wang, M.; Wang, X.L.; Tong, Hui; Zhang, Y.S.; Song, Wenjing; Sun, Yi‐Yang

doi:10.1016/j.actamat.2021.116709

Cited by 17 publications

(15 citation statements)

References 40 publications

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“…The photothermal processes on the Co 3 O 4 and NiS x @Co 3 O 4 models were calculated based on the following equation italicCp ∂ T ( x , t ) ∂ t + ρ italicCpu · ∇ T ( x , t ) = ∇ · ( k ∇ T false( x , t false) ) + italicEi where E in represents the thermal energy input from the photothermal conversion. Cp , ρ , and k are obtained from the literature, representing the thermal capacity, mass density, and thermal conductivity of Co 3 O 4 and NiS x @Co 3 O 4 . , x , t , and T are the space vector, time, and local temperature, respectively.…”

Section: Methodsmentioning

confidence: 99%

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Enhanced Oxygen Evolution Reaction Performance on NiS_x@Co₃O₄/Nickel Foam Electrocatalysts with Their Photothermal Property

et al. 2023

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Based on the principle of heterogeneous catalysis for water electrolysis, electrocatalysts with appropriate electronic structure and photothermal property are expected to drive the oxygen evolution reaction effectively. Herein, amorphous NiS x -coupled nanourchin-like Co3O4 was prepared on nickel foam (NiS x @Co3O4/NF) and investigated as a electrocatalyst for photothermal-assisted oxygen evolution reaction. The experimental investigations and simulant calculations jointly revealed NiS x @Co3O4/NF to be of suitable electronic structure and high near-infrared photothermal conversion capability to achieve the oxygen evolution reaction advantageously both in thermodynamics and in kinetics. Relative to Co3O4/NF and NiS x /NF, better oxygen evolution reaction activity, kinetics, and stability were achieved on NiS x @Co3O4/NF in 1.0 M KOH owing to the NiS x /Co3O4 synergetic effect. In addition, the oxygen evolution reaction performance of NiS x @Co3O4/NF can be obviously enhanced under near-infrared light irradiation, since NiS x @Co3O4 can absorb the near-infrared light to produce electric and thermal field. For the photothermal-mediated oxygen evolution reaction, the overpotential and Tafel slope of NiS x @Co3O4/NF at 50 mA cm–2 were reduced by 23 mV and 13 mV/dec, respectively. The present work provides an inspiring reference to design and develop photothermal-assisted water electrolysis using abundant solar energy.

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Section: Methodsmentioning

confidence: 99%

“…Cp, ρ, and k are obtained from the literature, representing the thermal capacity, mass density, and thermal conductivity of Co 3 O 4 and NiS x @Co 3 O 4 . 44,45 x, t, and T are the space vector, time, and local temperature, respectively. 1f).…”

Section: Cpmentioning

confidence: 99%

Enhanced Oxygen Evolution Reaction Performance on NiS_x@Co₃O₄/Nickel Foam Electrocatalysts with Their Photothermal Property

et al. 2023

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“…( b ) Variation curve of the adjustable thermal conductivity of B-LM-ECF with different liquid metal volume fraction. ( c ) Comparison of the performance of existing materials with adjustable thermal conductivity [ 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ]. ( d ) Maximum tensile fracture curve of the B-LM-ECF.…”

Section: Figurementioning

confidence: 99%

“…Therefore, the materials characterizing with adjustable thermal conductivity have attracted much attention in studying thermal conductivity materials [ 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ]. Cahill et al reported a lithium cobalt oxide with adjustable thermal conductivity, which is capable of dynamically adjusting its thermal conductivity by controlling the concentration of lithium ions in the range of 3.7–5.4 W·m −1 K −1 with the adjustment factor

of 1.46 [ 39 ].…”

Section: Introductionmentioning

confidence: 99%

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Biomimetic Liquid Metal–Elastomer Composited Foam with Adjustable Thermal Conductivity for Heat Control

et al. 2023

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The application of traditional materials with constant thermal conductivity in time-varying thermal environments poses great challenges due to their inability of adjusting thermal conductivity according to different requirements, for which reason materials with adjustable thermal conductivity have attracted much attention. However, certain limitations induced by those materials’ low softness or harsh adjustment conditions restrict them from being applied in heat dissipation and heat transfer scenarios. In this study, we report a biomimetic liquid metal–elastomer composited foam with adjustable thermal conductivity (B-LM-ECF). Inspired by the rationale of homeothermic animals regulating the thermal conductivity of their subcutaneous tissue, the prepared material adjusts its thermal conductivity via adjusting the volume proportion of liquid metal within it. The thermal conductivity of B-LM-ECF can be adjusted within the range of 0.11–8.4 W·m−1K−1. The adjustment factor η of B-LM-ECF is 76, which is defined as the ratio of the highest to the lowest thermal conductivity of the material. The material enabling reversible switching for itself from thermal insulation to heat dissipation. The prepared material exhibits 45 KPa of Young’s modulus with the maximum fracture tensile rate of 600%, facilitating better covering for thermal management objects. We selected a power lithium battery and a smartphone as specific thermal management objects to demonstrate its practical application in thermal management experiment.

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Continuously‐Tunable and Ultrawide‐Range Thermal Regulator Based on Superaligned Carbon Nanotube Aerogels for Dynamic Thermal Management of Batteries and Buildings

Yu,

Dai,

Hong

et al. 2024

Adv Funct Materials

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Efficient heat transfer control is highly demanded for dynamic thermal management of equipment and buildings especially when the environmental temperature dramatically changes. Thermal switches, the current approach of heat transfer control, suffer from the issues of low switching ratios below eight and sharp state transition between “on” and “off”. Herein, a continuously‐tuned thermal regulator with an ultrahigh thermal‐conductivity change ratio of 43 based on superaligned carbon nanotube aerogel is reported, which works on the regulation of both thermal interfacial resistance and conduction pathways by compressive deformation‐induced microstructure evolution. This thermal regulator can stabilize the device temperature at 25 °C when the environmental temperature varies by 7 and 11 °C under the natural convection and forced convection conditions, respectively. Toward practical application, the thermal regulator with flexibility is wrapped around a cylindrical lithium‐ion battery to control the operation temperature within the optimal range of 20–40 °C for enhanced discharging performance even at an environmental temperature of −20 °C. Besides, by combining the thermal regulator with radiative cooling film, the house model temperature can be lowered by 2.7 °C during daytime and raised by 1.1 °C during nighttime compared with the bare one. This efficient thermal regulation approach offers an effective solution for practical thermal management.

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High-contrast, reversible change of thermal conductivity in hexagonal nickel-iron sulfides

Cited by 17 publications

References 40 publications

Enhanced Oxygen Evolution Reaction Performance on NiS_x@Co₃O₄/Nickel Foam Electrocatalysts with Their Photothermal Property

Enhanced Oxygen Evolution Reaction Performance on NiS_x@Co₃O₄/Nickel Foam Electrocatalysts with Their Photothermal Property

Biomimetic Liquid Metal–Elastomer Composited Foam with Adjustable Thermal Conductivity for Heat Control

Continuously‐Tunable and Ultrawide‐Range Thermal Regulator Based on Superaligned Carbon Nanotube Aerogels for Dynamic Thermal Management of Batteries and Buildings

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High-contrast, reversible change of thermal conductivity in hexagonal nickel-iron sulfides

Cited by 17 publications

References 40 publications

Enhanced Oxygen Evolution Reaction Performance on NiSx@Co3O4/Nickel Foam Electrocatalysts with Their Photothermal Property

Enhanced Oxygen Evolution Reaction Performance on NiSx@Co3O4/Nickel Foam Electrocatalysts with Their Photothermal Property

Biomimetic Liquid Metal–Elastomer Composited Foam with Adjustable Thermal Conductivity for Heat Control

Continuously‐Tunable and Ultrawide‐Range Thermal Regulator Based on Superaligned Carbon Nanotube Aerogels for Dynamic Thermal Management of Batteries and Buildings

Contact Info

Product

Resources

About

Enhanced Oxygen Evolution Reaction Performance on NiS_x@Co₃O₄/Nickel Foam Electrocatalysts with Their Photothermal Property

Enhanced Oxygen Evolution Reaction Performance on NiS_x@Co₃O₄/Nickel Foam Electrocatalysts with Their Photothermal Property