High-efficiency, nickel-ceramic composite anode current collector for micro-tubular solid oxide fuel cells

Li, Tao; Wu, Zhentao; Li, K.

doi:10.1016/j.jpowsour.2015.01.130

Cited by 25 publications

(8 citation statements)

References 32 publications

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“…At optimum condition, the chamber pressure remained stable after 1 day (Figure 3d), displaying N2 permeance of 6.16×10 -10 mol m −2 s −1 Pa −1 . According to past literature [24], membrane is considered gas-tight when the N2 permeance is at the level of 10 −10 mol m −2 s −1 Pa −1 , thus this indicates the absence of pinholes and defects for the current nickel-plated YSZ hollow fibre. Whereas at un-optimised condition, the pressure decreased rapidly in the first 5 hours, exhibiting N2 permeance above 4.40×10 -8 mol m −2 s −1 Pa -1 indicating the low-quality nickel layer formed.…”

Section: Formation Of Nickel Sacrificial Layer On Ysz Hollow Fibrementioning

confidence: 97%

Pristine graphene membranes supported on ceramic hollow fibre prepared via a sacrificial layer assisted CVD approach

Chi

Chong

Wang

et al. 2020

Journal of Membrane Science

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Graphene is a 2D ultra-thin material, when being used as membranes, potentially promises high permeation flux and can be operated in extreme conditions attributed to its chemical inertness. Currently, continuous atomic thin graphene membranes can only be made by chemical vapour deposition (CVD) on flat sheet, which limits its process intensification because of the low surfacearea-to-volume ratio. To tackle this challenge, we have successfully devised an unprecedented method to fabricate graphene membranes supported on ceramic hollow fibre via a nickel sacrificial layer approach. It starts with coating a continuous dense nickel sacrificial layer on yttrium-stabilised zirconia (YSZ) hollow fibre via electroless plating, followed by synthesis of a continuous graphene layer by CVD. After that, thermal oxygen etching followed by nitric acid leaching were performed to successfully remove the nickel layer, and defect-patching treatment was carried out to eliminate any major defects formed during the leaching process. Herein, a continuous ultra-thin graphene layer sitting on YSZ hollow fibre was obtained. The achieved graphene hollow fibre membrane exhibits a methanol flux of 2.4 LMH (L m −2 h −1) bar-1 and a remarkable 98.8 % rose bengal rejection. This study thus demonstrates a step towards successful engineering of pristine graphene membrane on microtubular supports.

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Section: Formation Of Nickel Sacrificial Layer On Ysz Hollow Fibrementioning

confidence: 97%

Pristine graphene membranes supported on ceramic hollow fibre prepared via a sacrificial layer assisted CVD approach

Chi

Chong

Wang

et al. 2020

Journal of Membrane Science

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“…The nitrogen permeance at room temperature was determined to be of the order 1 Â 10 À11 mol m À2 s À1 Pa À1 , implying suitable gas-tightness had been obtained for the YSZ electrolyte. 25 The fracture robustness of a 3-channel anode was investigated using three-point bending tests (for experimental details see the ESI †); the fracture load was measured as approximately 24 N, which is more than 3-4 times higher than that of single-channel counterparts fabricated under similar conditions. 26 Such marked enhancement in mechanical robustness could effectively facilitate stack assembly and improve the resistance towards external impact.…”

Section: Broader Contextmentioning

confidence: 99%

A highly-robust solid oxide fuel cell (SOFC): simultaneous greenhouse gas treatment and clean energy generation

Rabuni

Kleiminger

et al. 2016

Energy Environ. Sci.

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“…The last category is to form a conductive function layer as current collector at the inner side of the anode, which is generally a metallic nickel layer (18,19,20,21). Li et al (18) developed a dual-structured hollow fibre design for current collecting, which used a singlestep phase-inversion assisted co-extrusion technique and realized an electrical conductivity of 4.0×10 4 S•cm -1 .…”

Section: Introductionmentioning

confidence: 99%

A New Design Using a Metal Wire Brush as the Current Collector of Micro-Tubular SOFCs

et al. 2021

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In this study, a novel current collecting method was designed and demonstrated by inserting a metal wire brush into the anode supported micro-tubular SOFC. The new design enables a tight and stable contact between the wire and the inner wall of the anode which leads to a fine performance of the SOFC. Different kinds of metal wires were applied, where the copper wire brush (CZWB) shows a better performance than the stainless steel wire brush (SSWB). At a temperature of 700℃ and a fuel feed of hydrogen, the SOFC using CZWB can achieve a maximum power density of 290 mW/cm2 and an ohmic resistance of 0.66 Ω∙cm2. And the brush size has been approved to have little effect on the ohmic resistance. A 108 h long-time discharge test was carried on, resulting with a degradation rate of 1.728‰/h and indicating a relative stability.

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High-efficiency, nickel-ceramic composite anode current collector for micro-tubular solid oxide fuel cells

Cited by 25 publications

References 32 publications

Pristine graphene membranes supported on ceramic hollow fibre prepared via a sacrificial layer assisted CVD approach

Pristine graphene membranes supported on ceramic hollow fibre prepared via a sacrificial layer assisted CVD approach

A highly-robust solid oxide fuel cell (SOFC): simultaneous greenhouse gas treatment and clean energy generation

A New Design Using a Metal Wire Brush as the Current Collector of Micro-Tubular SOFCs

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