Effect of pre-calcined ceramic powders at different temperatures on Ni-YSZ anode-supported SOFC cell/stack by low pressure injection molding

Xiao, Jie; Zeng, Xiaoyuan; Li, Mian; Dong, Peng; Wu, Hao; Xu, Mingli; Yan, Lin; Liu, Jiang; Xie, Yongmin; Zhang, Yingjie

doi:10.1016/j.ceramint.2019.06.270

Cited by 28 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The different polarities of powder and binder make it difficult for them to adsorb each other, and surfactants are usually applied as a connecting medium. The carboxyl group of surfactants is polar, which can combine powder, whereas the alkyl group is nonpolar, combining the binder, according to the 'like dissolves like' concept [110].…”

Section: Binder Systemmentioning

confidence: 99%

Research Progress on Low-Pressure Powder Injection Molding

et al. 2022

View full text Add to dashboard Cite

Powder injection molding (PIM) is a well-known technique to manufacture net-shaped, complicated, macro or micro parts employing a wide range of materials and alloys. Depending on the pressure applied to inject the feedstock, this process can be separated into low-pressure (LPIM) and high-pressure (HPIM) injection molding. Although the LPIM and HPIM processes are theoretically similar, all steps have substantial differences, particularly feedstock preparation, injection, and debinding. After decades of focusing on HPIM, low-viscosity feedstocks with improved flowability have recently been produced utilizing low-molecular-weight polymers for LPIM. It has been proven that LPIM can be used for making parts in low quantities or mass production. Compared to HPIM, which could only be used for the mass production of metallic and ceramic components, LPIM can give an outstanding opportunity to cover applications in low or large batch production rates. Due to the use of low-cost equipment, LPIM also provides several economic benefits. However, establishing an optimal binder system for all powders that should be injected at extremely low pressures (below 1 MPa) is challenging. Therefore, various defects may occur throughout the mixing, injection, debinding, and sintering stages. Since all steps in the process are interrelated, it is important to have a general picture of the whole process which needs a scientific overview. This paper reviews the potential of LPIM and the characteristics of all steps. A complete academic and research background survey on the applications, challenges, and prospects has been indicated. It can be concluded that although many challenges of LPIM have been solved, it could be a proper solution to use this process and materials in developing new applications for technologies such as additive manufacturing and processing of sensitive alloys.

show abstract

Section: Binder Systemmentioning

confidence: 99%

Research Progress on Low-Pressure Powder Injection Molding

et al. 2022

View full text Add to dashboard Cite

show abstract

“…By precisely controlling the raw material ratio and sintering temperature, the structural integrity and performance stability of the microchannel can be ensured. Due to the limitations of the process of mold manufacturing and demolding, this method faces certain challenges in the processing of high-aspect-ratio microchannels [ 24 , 25 ]. Laser micromachining technology is known for its non-contact processing and wide applicability.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Ceramic Microchannels with Periodic Corrugated Microstructures as Catalyst Support for Hydrogen Production via Diamond Wire Sawing

Li,

Gao,

Yuan

et al. 2024

Materials

View full text Add to dashboard Cite

Hydrogen energy is the clean energy with the most potential in the 21st century. The microchannel reactor for methanol steam reforming (MSR) is one of the effective ways to obtain hydrogen. Ceramic materials have the advantages of high temperature resistance, corrosion resistance, and high mechanical strength, and are ideal materials for preparing the catalyst support in microchannel reactors. However, the structure of ceramic materials is hard and brittle, and the feature size of microchannel is generally not more than 1 mm, which is difficult to process using traditional processing methods. Diamond wire saw processing technology is mainly used in the slicing of hard and brittle materials such as sapphire and silicon. In this paper, a microchannel with a periodic corrugated microstructure was fabricated on a ceramic plate using diamond wire sawing, and then as a catalyst support when used in a microreactor for MSR hydrogen production. The effects of wire speed and feed speed on the amplitude and period size of the periodic corrugated microstructure were studied using a single-factor experiment. The microchannel surface morphology was observed via SEM and a 3D confocal laser microscope under different processing parameters. The microchannel samples obtained under different processing parameters were supported by a multiple impregnation method. The loading strength of the catalyst was tested via a strong wind purge experiment. The experimental results show that the periodic corrugated microstructure can significantly enhance the load strength of the catalyst. The microchannel catalyst support with the periodic corrugated microstructure was put into the microreactor for a hydrogen production experiment, and a good hydrogen production effect was obtained. The experimental results have a positive guiding effect on promoting ceramic materials as the microchannel catalyst support for the development of hydrogen energy.

show abstract

“…For this, a variety of issues must be taken into account. Although nickel-based materials have been explored targeting methane reforming [1,2], in the case of methane directly-fed SOFCs, carbon deposition causes anode deactivation, and sulphur poisons conventional nickel-based anode materials [3]. It is well known that reactions such as methane cracking, carbon monoxide reduction, or the Boudouard reaction are pathways that should be avoided in these cases.…”

Section: Introductionmentioning

confidence: 99%

Influence of novel anode design on the performance and coke resistance towards methane directly-fed solid oxide fuel cells

Sarruf

Hong

Steinberger‐Wilckens

et al. 2020

Ceramics International

View full text Add to dashboard Cite

The direct utilisation of primary fuels such as natural gas, green methane or ethanol represents a transition step towards a cleaner energy-based society. This work shows the influence of a nickel-free intermediate anode layer, and a ceria-based functional anode composite, on solid oxide fuel cell (SOFC) performance when directly utilising dry methane without fuel pre-reforming. A CeO 2-Co 3 O 4-CuO electrocatalyst was investigated by X-ray diffraction and X-ray fluorescence to confirm the presence of CeO 2 , Co 3 O 4 , and CuO phases. To avoid thermal mismatches between the anode/electrolyte, an anode intermediate layer was developed and tested, with the aim of enhancing the thermal and chemical compatibility of components and oxygen ion transfer within the anode. The electrochemical properties of the assembled cells were evaluated by measuring i-V plots and electrochemical impedance spectra. The addition of the intermediate layer substantially decreased the polarisation resistance of the cell and increased the electrochemical performance of the cell 2.5-to 5.5-fold depending on which fuel was being utilised. Scanning electron microscopy was performed to observe the integrity of the microstructure morphology of both anode assemblies. The utilisation of dry methane was shown to be viable for operation from 750 to 850˚C within the developed cells. Furthermore, Raman spectroscopy and temperature-programmed oxidation tests confirmed that carbon deposition over the anode surface was negligible within the proposed configuration and materials design. Accordingly, this study reveals that the addition of the intermediate layer is promising for improving SOFC performance and mitigating carbon coking under direct methane-fuelled operation.

show abstract

Effect of pre-calcined ceramic powders at different temperatures on Ni-YSZ anode-supported SOFC cell/stack by low pressure injection molding

Cited by 28 publications

References 33 publications

Research Progress on Low-Pressure Powder Injection Molding

Research Progress on Low-Pressure Powder Injection Molding

Fabrication of Ceramic Microchannels with Periodic Corrugated Microstructures as Catalyst Support for Hydrogen Production via Diamond Wire Sawing

Influence of novel anode design on the performance and coke resistance towards methane directly-fed solid oxide fuel cells

Contact Info

Product

Resources

About