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Effect of the Cell Count on Geometrical, Mechanical, and Thermal Properties of Hierarchical‐Porous Reticulated Copper Foams from a Combination of Sponge Replication and Freeze‐Drying Techniques

Alina Sutygina, Ulf Betke, Michael Scheffler

Advanced Engineering Materials > 24 > 10 > n/a - n/a

Copper foams are manufactured from polyurethane template foams with a cell size of 10 and 30 ppi using two techniques: Sponge replication and a combination of sponge replication with additional freezing steps to obtain lamellar strut pores. The total porosity of foams is ≈93% with and ≈87% without additional freezing, respectively. The foams possess randomly oriented lamellar pores with a thickness...

article

A facile preparation of robust superhydrophilic and underwater superoleophobic copper foam for high efficiency and repeatable oil–water separation

Jinmei He, Rong Wang, Yajie Pang, Zhanxia Luo, more

Surface and Interface Analysis > 53 > 11 > 963 - 972

Design of robust separation materials with superwettability for efficient oil–water separation is of great significance because of the serious problem of oil leakage. Herein, we have fabricated a superwetting material based on copper foam via chemical oxidation and hydrothermal method for oil–water separation. These modified copper foam with rough structure exhibit excellent superhydrophilicity and...

article

Electrochemical behavior of residual salts and an effective method to remove impurities in the formation of porous copper electrode for lithium metal batteries

Youngkwang Kim, Seonghun Jeong, Hyo Eun Bae, Artur Tron, more

International Journal of Energy Research > 45 > 7 > 10738 - 10745

Lithium is one of the most promising candidates for use as an anode in lithium rechargeable batteries owing to its high specific capacity and low redox potential. However, lithium dendritic formation during charging and discharging hinders the use of lithium metal as an anode. Herein, we introduce a porous copper electrode that mitigates dendritic lithium deposition and the formation of dead lithium...

article

Performance of a liquid cooling‐based battery thermal management system with a composite phase change material

Yanqi Zhao, Qi Li, Boyang Zou, Tongtong Zhang, more

International Journal of Energy Research > 44 > 6 > 4727 - 4742

This article reports a recent study on a liquid cooling‐based battery thermal management system (BTMS) with a composite phase change material (CPCM). Both copper foam and expanded graphite were considered as the structural materials for the CPCM. The thermal behaviour of a lithium‐ion battery was experimental investigated first under different charge/discharge rates. A two‐dimensional model was then...

article

Experimental investigation of a new thermal energy storage system using thermo‐sensitive magnetic fluid and porous medium

Licong Jin, Decai Li, Xin‐Rong Zhang

International Journal of Energy Research > 43 > 13 > 7336 - 7351

In this paper, a novel thermal energy storage (TES) system based on a thermo‐sensitive magnetic fluid (MF) in a porous medium is proposed to store low‐temperature thermal energy. In order to have a better understanding about the fluid flow and heat‐transfer mechanism in the TES system, four different configurations, using ferrofluid as the basic fluid and either copper foam or porous carbon with different...

article

Synthesis of nanoporous copper foam-applied current collector electrode for supercapacitor

Majid Mirzaee, Changiz Dehghanian

Journal of the Iranian Chemical Society > 2019 > 16 > 2 > 283-292

Through electrodeposition at a high current density and controlling the produced hydrogen gas, nanostructured copper foams were fabricated on copper as high-performance electrodes for supercapacitors. The structure and morphology of copper foams were controlled by adjusting deposition parameters and addition of acid acetic as bubble stabilizer addition. Acid acetic reduced the hydrophobic force between...

article

3D copper foam/bamboo charcoal composites as high sulfur loading host for lithium-sulfur batteries

Juanjuan Cheng, Hongjia Song, Yong Pan, Yun Ou, more

Ionics > 2018 > 24 > 12 > 4093-4099

In this study, a three-Dimensional (3D) copper foam/bamboo charcoal/sulfur cathode is designed for high sulfur loading lithium-sulfur (Li-S) battery. In the cathode, an interconnected conductive skeleton of 3D copper foam and the bamboo charcoal within the pores of 3D structure are facilitating fast ion and electron transport physically. The bamboo charcoal can improve the volume utilization. More...

article

Experimental investigation on the heat transfer enhancement in a novel latent heat thermal storage equipment

Yang Liu, Jianguo Duan, Xiufen He, Yaxiong Wang

Applied Thermal Engineering > 2018 > 142 > C > 361-370

Latent heat thermal energy storage (LHTES) is a potential and promising technology for efficient utilization of renewable energy. In order to achieve efficient heat storage and release capacity, a novel and compact LHTES equipment which is integrated with several parallel U-tube rectangular heat storage units (HSUs) has been developed and investigated experimentally. The thermal storage equipment...

article

Fabrication of robust surfaces with special wettability on porous copper substrates for various oil/water separations

Chenyang Cao, Jiang Cheng

Chemical Engineering Journal > 2018 > 347 > C > 585-594

We fabricated robust superhydrophilic or superhydrophobic films on porous copper substrates including copper mesh and copper foam for various oil/water separations. By simple acid etching and replacement reaction, a composite film comprised of copper and silver (denoted as Cu@Ag) with superhydrophilic and underwater superoleophobic properties was prepared. After modification with n-dodecanethiol (DDT),...

article

Synthesis and characterization of copper foams through a powder metallurgy route using a compressible and lubricant space-holder material

Mohit Sharma, O. P. Modi, Punit Kumar

International Journal of Minerals, Metallurgy, and Materials > 2018 > 25 > 8 > 902-912

In the present work, a compressible and lubricating space-holder material commonly known as “acrawax” was used to process Cu foams with various pore sizes and various porosities. The foams were processed without using binders to avoid contamination of their metal matrices. The lubricant space-holder material was found to facilitate more uniform flow and distribution of metal powder around the surface...

article

An efficient multidoped Cu0.39Zn0.14Co2.47O4-ZnO electrode attached on reduced graphene oxide and copper foam as superior lithium-ion battery anodes

Ji-Liang Niu, Hai-Jun Peng, Cheng-Hui Zeng, Xiao-Ming Lin, more

Chemical Engineering Journal > 2018 > 336 > C > 510-517

Metal-organic frameworks (MOFs) are very promising self-sacrificing templates to develop the large-scale fabrication of new functional materials for energy conversion and storage. In this study, novel multidoped porous mixed metal oxides Cu_0.39Zn_0.14Co_2.47O₄-ZnO nanoparticles were successfully fabricated through one-step pyrolysis of a polymetallic zeolitic imidazolate framework attached on reduced...

article

Sprayed superamphiphilic copper foams for long term recoverable oil-water separation

Haiyan Zhu, Doudou Li, Mingjuan Cai, Xinquan Yu, more

Surface and Coatings Technology > 2018 > 334 > C > 394-401

Superamphiphilic copper foams were prepared by one-step spraying a water-borne solution of hydroxyl-functionalized multi-wall carbon nanotubes and melamine formaldehyde. Water or oil droplets can spread on the coating rapidly and completely in air; meanwhile, oil droplets underwater can retain quasi-spheres without any penetration all the time (superoleophobic underwater), and so the water droplets...

article

Experimental investigation on copper foam/hydrated salt composite phase change material for thermal energy storage

T.X. Li, D.L. Wu, F. He, R.Z. Wang

International Journal of Heat and Mass Transfer > 2017 > 115 > PA > 148-157

Latent thermal energy storage based on hydrated salt as phase change material (PCM) has the potential to store large amounts of energy in relatively small volume. However, the problems of phase separation, high supercooling degree and low thermal conductivity are the common drawbacks for hydrated salts and thus critically limit their energy storage applications. In this study, the hydrated salt of...

article

A facile method for the fabrication of a superhydrophobic polydopamine-coated copper foam for oil/water separation

Wei Zhou, Guangji Li, Liying Wang, Zhifeng Chen, more

Applied Surface Science > 2017 > 413 > C > 140-148

A simple dip-coating method was explored to construct hierarchical structures on a 3D copper foam (CF) surface by combining the intrinsic properties of mussel-inspired polydopamine (PDA) and a 3D metal structure. The CF substrate was sequentially modified with PDA and Ag nanoparticles (NPs) and then coupled with n-dodecyl mercaptan (NDM) to create a durable superhydrophobic CF for oil/water separation...

article

Integrated flat heat pipe with a porous network wick for high-heat-flux electronic devices

Xianbing Ji, Hongchuan Li, Jinliang Xu, Yanping Huang

Experimental Thermal and Fluid Science > 2017 > 85 > C > 119-131

A novel integrated flat heat pipe (IFHP) was constructed, which consists of an evaporator and a condenser with multiple channels fabricated in the fin heat sink. A layer of compressed copper foam was sintered on the inner surface of the evaporator bottom plate, and many copper foam bars were inserted into the channels, both of which formed a porous network wick. Experiments were performed under three...

article

Facile method of pulse electrodeposited NiO-CeO2Sm doped nanocomposite electrode on copper foam for supercapacitor application

P. Sivasakthi, G.N.K. Ramesh Bapu, Kathiresan Murugavel, S. Mohan

Journal of Alloys and Compounds > 2017 > 709 > C > 240-247

A new mesoporous NiO-CeO₂Sm doped nanocomposite electrode on copper foam has been prepared by pulse electrodeposition technique. The as-prepared NiO and NiO-CeO₂Sm doped nanocomposite electrodes were characterized by SEM, TEM, EDAX, XRD and BET. Electrochemical performance of the as prepared materials was characterized by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impendence...

article

Durability evaluation of superhydrophobic copper foams for long-term oil-water separation

Haiyan Zhu, Lin Gao, Xinquan Yu, Caihua Liang, more

Applied Surface Science > 2017 > 407 > C > 145-155

Superhydrophobic three-dimensional porous composites with good mechanical stability and high efficiency are promising candidates for oil-water separation application. Hence, several superhydrophobic copper foams were fabricated via the in situ growth of patterned Cu(OH)₂ nanoneedles or ZnO nanocrystals (e.g. ZnO nanocones and ZnO nanorods) on the skeleton and followed by chemically modification. All...

article

Cooling capacity of high porosity open-cell metal foams as passive cryogenic radiators

Tisha Dixit, Indranil Ghosh

Cryogenics > 2017 > 84 > C > 81-88

This work presents an innovative avenue for employment of high porosity open-cell metal foams as extended heat transfer surfaces in passive cryogenic radiators. Metal foams are known for being light in weight and possess high surface area density. In contrast to a solid surface, porosity of metal foams makes it feasible for penetration of radiation thereby resulting in higher radiatively interactive...

article

Enhancing boiling and condensation co-existing heat transfer in a small and closed space by copper foam inserts

Zhongliang Liu, Fuwei Zheng, Yanxia Li

International Journal of Heat and Mass Transfer > 2017 > 108 > PA > 961-971

This paper aims at enhancing the boiling-condensation co-existing phase change heat transfer process inside a small and closed space by inserting copper foams into the space. The working fluid is deionized water. The pore density of copper foam used is 20 PPI and the porosity is 0.96. The inserts used include cut and non-cut copper foam blocks. Experiments were carried out to study the influences...

article

Experimental investigation of thermal performance of metal foam wicked flat heat pipe

Dhanabal Somasundaram, Annamalai Mani, Muthusamy Kamaraj

Experimental Thermal and Fluid Science > 2017 > 82 > Complete > 482-492

Experimental investigations of thermal performance of a flat heat pipe (FHP) with and without wick columns were investigated. Copper metal foam fabricated by lost carbonate sintering process and characterized by Scanning Electron Microscope (SEM) was used as wick structure. The effect of heat input, cooling water flow rate, cooling water temperature and fill ratio on the thermal response of the FHP...

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Search results

Effect of the Cell Count on Geometrical, Mechanical, and Thermal Properties of Hierarchical‐Porous Reticulated Copper Foams from a Combination of Sponge Replication and Freeze‐Drying Techniques

A facile preparation of robust superhydrophilic and underwater superoleophobic copper foam for high efficiency and repeatable oil–water separation

Electrochemical behavior of residual salts and an effective method to remove impurities in the formation of porous copper electrode for lithium metal batteries

Performance of a liquid cooling‐based battery thermal management system with a composite phase change material

Experimental investigation of a new thermal energy storage system using thermo‐sensitive magnetic fluid and porous medium

Synthesis of nanoporous copper foam-applied current collector electrode for supercapacitor

3D copper foam/bamboo charcoal composites as high sulfur loading host for lithium-sulfur batteries

Experimental investigation on the heat transfer enhancement in a novel latent heat thermal storage equipment

Fabrication of robust surfaces with special wettability on porous copper substrates for various oil/water separations

Synthesis and characterization of copper foams through a powder metallurgy route using a compressible and lubricant space-holder material

An efficient multidoped Cu0.39Zn0.14Co2.47O4-ZnO electrode attached on reduced graphene oxide and copper foam as superior lithium-ion battery anodes

Sprayed superamphiphilic copper foams for long term recoverable oil-water separation

Experimental investigation on copper foam/hydrated salt composite phase change material for thermal energy storage

A facile method for the fabrication of a superhydrophobic polydopamine-coated copper foam for oil/water separation

Integrated flat heat pipe with a porous network wick for high-heat-flux electronic devices

Facile method of pulse electrodeposited NiO-CeO2Sm doped nanocomposite electrode on copper foam for supercapacitor application

Durability evaluation of superhydrophobic copper foams for long-term oil-water separation

Cooling capacity of high porosity open-cell metal foams as passive cryogenic radiators

Enhancing boiling and condensation co-existing heat transfer in a small and closed space by copper foam inserts

Experimental investigation of thermal performance of metal foam wicked flat heat pipe

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