An ultralight-weight polymer electrolyte fuel cell based on woven carbon fiber-resin reinforced bipolar plate

Choi, Hyunguk; Seo, Dong Jun; Choi, Wook; Choi, Seo Won; Lee, Myeong Hwa; Park, Young Je; Kim, Tae Young; Yoon, Young Gi; Yi, Seong‐Tae; Jung, Chan‐Hee

doi:10.1016/j.jpowsour.2020.229291

Cited by 28 publications

(13 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it is difficult to polish the channels after the flow fields are formed. 26 A soft layer method is another effective way to remove the polymer binder on the surface layer without external energy sources using a soft polymer film in the hot press. In the following curing process, the conductive carbon was exposed after the film was detached.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Choi's group employed a physical grinding method to remove the resin layer. 26 Their 200 μm thin carbon BPPs had no flow patterns, and a metal mesh was used as the flow field instead. Lee's group developed a soft layer method in the molding process.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Since pure graphite suffers from brittleness and machining difficulties, graphite/polymer composites have attracted attention for their good mechanical properties, straightforward molding process, superior corrosion resistance, and low density. − However, the main drawback in the development of such composite BPPs is high interfacial contact resistance (ICR): the enhanced temperature and the compression pressure in the hot molding process squeeze the resin onto the surface, inevitably forming a resin-rich layer there. − A number of research groups have sought to avoid forming such a layer or to remove it by modifying the manufacturing process and performing a surface treatment. − For example, Jiang reported obtaining highly conductive BPPs by spreading graphitized cactus-like carbon nanofibers on the surface prior to hot pressing. The carbon nanofiber requires a high temperature of 500 °C in an inert atmosphere and the use of carbon monoxide.…”

Section: Introductionmentioning

confidence: 99%

“…The carbon nanofiber requires a high temperature of 500 °C in an inert atmosphere and the use of carbon monoxide. Choi’s group employed a physical grinding method to remove the resin layer . Their 200 μm thin carbon BPPs had no flow patterns, and a metal mesh was used as the flow field instead.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Gradient Structured Composite Bipolar Plates for Proton Exchange Membrane Fuel Cells

Zhang

Huang

Fan

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Carbon/polymer binder composite bipolar plates for proton exchange membrane fuel cells have attracted attention for their corrosion resistivity and ease of manufacturing. However, the hot-pressing fabrication process often leads to a resin-rich surface on the plate, which may increase the interfacial contact resistance. A number of studies have been reported to reduce resin accumulation on the surface. However, most reported methods have focused on how to exceed the United States Department of Energy conductivity and mechanical targets. Their fabrication methods are often complicated, which is hard to form flow channels directly in manufacturing. Herein, we propose a simple layer-by-layer method to prepare graphite/resin composite bipolar plates. During compression of the multilayer graphite/resin powder, elevated temperature and pressure make the resin in the inner polymer-rich layer flow toward the outer resin-deficient layers. Scanning electron microscopy with energy-dispersive X-ray analysis shows an unbroken "smiling" curve of carbon content along the whole cross-section, suggesting a continuous distribution of the resin across the whole composite. The resulting composite demonstrates a better interfacial contact resistance (9.2 mΩ cm 2 @100 psi) and a flexural strength (44.3 MPa) than the plates prepared by a single-layer method. Flow channels with a good molding accuracy (±4 μm) are also observed. Single-cell testing with the gradient-structured composite plate shows excellent cell performance: the cell voltage is 0.67 V at 1 A cm −2 , and the maximum power density reaches 0.99 W cm −2 . In situ electrochemical impedance analysis demonstrates that compared to an analogue using the single-layer loading method, the cell with gradient structured plates displays lower ohmic and mass transfer resistance than the cell using the plates prepared by a single-layer method.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Gradient Structured Composite Bipolar Plates for Proton Exchange Membrane Fuel Cells

Zhang

Huang

Fan

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Today, renewable energy sources, as well as alternative energy resources, are a topical trend all over the world. At the same time, energy storage systems such as various batteries [75], fuel cells [76] and electrochemical capacitors [77] (supercapacitors) are evolving and are increasingly referred to as next generation technologies that will help overcome the world's energy crisis. Supercapacitors are special types of capacitors that have a high electron transfer rate, which facilitates fast charging, and are characterized as devices with a long life cycle and low maintenance costs.…”

Section: Energy Storage Systemsmentioning

confidence: 99%

Pitch-based carbon fibers: preparation and applications

Kaidar¹,

Смагулова²,

Imash³

et al. 2021

Горение и Плазмохимия

View full text Add to dashboard Cite

Attention to carbon fiber (CF) conditioned by their unique physicochemical, mechanical and electrical properties, which makes them in demand in various fields of activity. Today there are several kinds of carbon fibers, most of which (about 90%) are made of polyacrylonitrile (PAN). Despite the fact that carbon fibers are produced from several types of different precursors, their widespread commercial use is limited by the high cost of the product. Has, many research and engineering group seek to reduce the cost of production by using cheap carbon raw materials. A likely solution to this problem is the exploitation of coal, petroleum and coal tar as an effective progenitor for CF production. This review discusses neoteric accomplishment in CF synthesis using various carbon pitches. The possibility of obtaining carbon fibers based on resin with the addition of PAN is presented, and the prospects for their use in energy storage systems and various reinforced composite materials are described in detail.

show abstract