A High Conductive Composite Bipolar Plate with Conductive Network Constructed by Chemical Vapor Deposition

Li, Wenkai; Zeng, Haodong; Peng, Tao; Gao, Ziteng; Xie, Zhiyong

doi:10.3390/en15144979

Cited by 5 publications

(1 citation statement)

References 27 publications

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“…For example, Fan [ 22 ] uses the reasonable distribution of flake graphite (FG) and expanding graphite (EG) to construct a conductive path to improve the performance of the composite bipolar plate, and its conductivity can reach up to 332.64 S/cm. Additionally, the addition of conductive fillers can also effectively improve the electrical conductivity of composite bipolar plates [ 23 , 24 , 25 , 26 ]. At present, a variety of fillers have been proven to play a positive role in the performance of composite bipolar plates, such as carbon fibers (CF), multi-walled carbon nanotubes (MWCNTs), graphene, and conductive carbon black [ 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Improved Performance of Composite Bipolar Plates for PEMFC Modified by Homogeneously Dispersed Multi-Walled Carbon Nanotube Networks Prepared by In Situ Chemical Deposition

Xie

Qiu

et al. 2023

Nanomaterials

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Composite bipolar plates with excellent performance play a crucial role in improving the overall performance of proton-exchange-membrane fuel cells. However, for graphite/resin composite bipolar plates, their electrical conductivity and mechanical properties are often too complex to meet the needs of users at the same time. Although nanoconductive fillers can alleviate this problem, the performance improvement for composite bipolar plates is often limited due to problems such as agglomeration. In this study, a uniformly dispersed multi-walled carbon nanotube network was prepared by in situ vapor deposition on the surface and pores of expanded graphite, which effectively avoided the problem of agglomeration and effectively improved the various properties of the composite BPs through the synergistic effect with graphite. With the addition of 2% in situ deposited carbon nanotubes, the modified composite bipolar plate has the best conductivity (334.53 S/cm) and flexural strength (50.24 MPa), and all the properties can meet the DOE requirements in 2025. Using the in situ deposition of carbon nanotubes to modify composite bipolar plates is a feasible route because it can result in multi-walled carbon nanotubes in large quantities and avoid the agglomeration phenomenon caused by adding nanofillers. It can also significantly improve the performance of composite bipolar plates, achieving the high performance of composite bipolar plates at a lower cost.

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Section: Introductionmentioning

confidence: 99%

Improved Performance of Composite Bipolar Plates for PEMFC Modified by Homogeneously Dispersed Multi-Walled Carbon Nanotube Networks Prepared by In Situ Chemical Deposition

Xie

Qiu

et al. 2023

Nanomaterials

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Polybenzoxazine‐based PEMFC composite bipolar plates with three‐dimensional conductive skeleton

Xianwu,

Bin,

Qilong

et al. 2024

J of Applied Polymer Sci

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To address the limitation of poor conductivity in composite bipolar plates (CBPs), a three‐dimensional (3D) conductive skeleton structure of graphite flakes (GF) is constructed using the sacrificial template method. This method prepares 3D polybenzoxazine/graphite flakes composite bipolar plates (3D‐PBA/GF CBPs) with high conductivity through vacuum impregnation of benzoxazine resin (BA). In this paper, the effect of the presence of a conductive network structure on the key properties of CBPs is analyzed, and the performance of GF randomly dispersed CBPs obtained through traditional solution dispersion is also compared. Thanks to the efficient conductive path within its 3D conductive skeleton structure, the 3D‐PBA/GF CBP achieves excellent conductivity meeting US Department of Energy (DOE) targets (in‐plane conductivity greater than 100 S/cm, area‐specific resistance less than 10 mΩ cm2) at a low filler content (50 wt%). In addition, CBPs with 3D conductive skeleton structures also exhibit qualified service performances to meet the requirements of proton exchange membrane fuel cells (PEMFCs). Compared with GF randomly dispersed CBPs, 3D‐PBA/GF CBPs exhibited higher power density in a single cell. This study demonstrates that constructing PBA/GF CBPs with a 3D conductive skeleton to achieve an accumulation distribution of conductive fillers is an efficient method for enhancing the conductivity of CBPs.

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High-performance polybenzoxazine based composites PEMFC bipolar plates with a multi-layer structure for surface enrichment of conductive phase

Huang

Tong

et al. 2023

International Journal of Hydrogen Energy

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A High Conductive Composite Bipolar Plate with Conductive Network Constructed by Chemical Vapor Deposition

Cited by 5 publications

References 27 publications

Improved Performance of Composite Bipolar Plates for PEMFC Modified by Homogeneously Dispersed Multi-Walled Carbon Nanotube Networks Prepared by In Situ Chemical Deposition

Improved Performance of Composite Bipolar Plates for PEMFC Modified by Homogeneously Dispersed Multi-Walled Carbon Nanotube Networks Prepared by In Situ Chemical Deposition

Polybenzoxazine‐based PEMFC composite bipolar plates with three‐dimensional conductive skeleton

High-performance polybenzoxazine based composites PEMFC bipolar plates with a multi-layer structure for surface enrichment of conductive phase

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