New high-performance bulky N-heterocyclic group functionalized poly(terphenyl piperidinium) membranes for HT-PEMFC applications

Jin, Yaping; Wang, Ting; Che, Xuefu; Dong, Jianxin; Liu, Ruihong; Yang, Jingshuai

doi:10.1016/j.memsci.2021.119884

Cited by 65 publications

(43 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flow rate of supply gas is set at the stoichiometric ratio of 1.5, where the volume flow rate of supply gas at the anode and cathode is 0.210 NL/min and 0.105 NL/min, respectively. The stoichiometric ratio of 1.0 for the flow rate of supply gas can be defined by Equation (7).…”

Section: Model Description and Governing Equationsmentioning

confidence: 99%

“…According to the literature on high-temperature PEMFC operated over 373 K, newly developed membranes which can be used at a high temperature include polybenzimidazolebased membrane [6] and bulky N-heterocyclic group functionalized poly (terphenyl piperidinium) membrane [7]. Regarding the development of new electrode, polytetrafluoroethylene (PTFE) binder dispersion [8] and 3D numerical simulation for the optimization of electrode thickness [9] have been reported.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Simulation on Impacts of Thickness of Nafion Series Membranes and Relative Humidity on PEMFC Operated at 363 K and 373 K

et al. 2021

View full text Add to dashboard Cite

The purpose of this study is to understand the impact of the thickness of Nafion membrane, which is a typical polymer electrolyte membrane (PEM) in Polymer Electrolyte Membrane Fuel Cells (PEMFCs), and relative humidity of supply gas on the distributions of H2, O2, H2O concentration and current density on the interface between a Nafion membrane and anode catalyst layer or the interface between a Nafion membrane and cathode catalyst layer. The effect of the initial temperature of the cell (Tini) is also investigated by the numerical simulation using the 3D model by COMSOL Multiphysics. As a result, the current density decreases along with the gas flow through the gas channel irrespective of the Nafion membrane thickness and Tini, which can be explained by the concentration distribution of H2 and O2 consumed by electrochemical reaction. The molar concentration of H2O decreases when the thickness of Nafion membrane increases, irrespective of Tini and the relative humidity of the supply gas. The current density increases with the increase in relative humidity of the supply gas, irrespective of the Nafion membrane thickness and Tini. This study recommends that a thinner Nafion membrane with well-humidified supply gas would promote high power generation at the target temperature of 363 K and 373 K.

show abstract

Section: Model Description and Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Impacts of Thickness of Nafion Series Membranes and Relative Humidity on PEMFC Operated at 363 K and 373 K

et al. 2021

View full text Add to dashboard Cite

show abstract

“…As to PEM, some research focuses on new materials which are available for high temperature operation. Phosphoric acid-doped polybenzimidazole (PA-PBI) membranes [8] and bulky basic group grafted ether-free poly (terphenyl piperidinium) membranes [9] have been reported. However, the stability has not been confirmed.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on Impact of Thickness of PEM and GDL with and without MPL on Coupling Phenomena in PEFC Operated at Higher Temperature Such as 363 K and 373 K

et al. 2022

View full text Add to dashboard Cite

The aim of this study is to clarify the impact of the thickness of a gas diffusion layer (GDL) and a micro porous layer (MPL) on the distributions of gas, H2O, and current density in a polymer electrolyte fuel cell (PEFC) which is operated at 363 K and 373 K and with various thicknesses of polymer electrolyte membrane (PEM) as well as a relative humidity (RH) of supply gas. These investigations are carried out by numerical simulation using the 3D model with COMSOL Multiphysics. In the case of Nafion 115, which is the thicker PEM, the change in the molar concentration of H2O from the inlet to the outlet with MPL is larger than that without MPL irrespective of the thickness of GDL, Tini and RH condition. In the case of Nafion NRE-212, which is the thinner PEM, the change in the molar concentration of H2O from the inlet to the outlet is larger with MPL than that without MPL in the case of TGP-H-060 (the thicker commercial GDL), while that is smaller with MPL than that without MPL in the case of TGP-H-030 (the thinner commercial GDL). These results exhibit the same tendency as the results of the numerical simulation on the current density.

show abstract

“…High Temperature PEFC (HTPEFC) has been focused recently on temperature above 100˚C [7]- [14]. Most of them can be categorized into the R & D of new materials, which can work at a higher temperature, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Most of them can be categorized into the R & D of new materials, which can work at a higher temperature, e.g. membrane and catalyst [7]- [14]. Focused on the research to understand the heat and mass transfer characteristics in HTPEFC, some numerical studies have reported that the temperature-driven H 2 O transport in cathode GDL [15], optimization of electrode thickness to obtain higher performance without high cost [16], assessment of mass transport effect on the performance by 3D multi-physics modeling [17], optimization of GDL focusing the thickness of porosity by non-isothermal 3D model [18] and dynamic simulation for start-up process by non-isothermal 3D model [4].…”

Section: Introductionmentioning

confidence: 99%

Impact of Separator Thickness on Temperature Distribution in Single Polymer Electrolyte Fuel Cell Based on 1D Heat Transfer

Nishimura¹,

Mishima²,

Kono³

et al. 2022

EPE

View full text Add to dashboard Cite

It is known from the New Energy and Industry Technology Development Organization (NEDO) roam map Japan, 2017 that the polymer electrolyte fuel cell (PEFC) power generation system is required to operate at 100˚C for application of mobility usage from 2020 to 2025. This study aims to clarify the effect of separator thickness on the distribution of the temperature of reaction surface (T react ) at the initial temperature of cell (T ini ) with flow rate, relative humidity (RH) of supply gases as well as RH of air surrounding cell of PEFC.The distribution of T react is estimated by means of the heat transfer model considering the H 2 O vapor transfer proposed by the authors. The relationship between the standard deviation of T react -T ini and total voltage obtained in the experiment is also investigated. We can know the effect of the flow rate of supply gas as well as RH of air surrounding cell of PEFC on the distribution of T react -T ini is not significant. It is observed the wider distribution of T react -T ini provides the reduction in power generation performance irrespective of separator thickness. In the case of separator thickness of 1.0 mm, the standard deviation of T react -T ini has smaller distribution range and the total voltage shows a larger variation compared to the other cases.

show abstract

New high-performance bulky N-heterocyclic group functionalized poly(terphenyl piperidinium) membranes for HT-PEMFC applications

Cited by 65 publications

References 60 publications

Numerical Simulation on Impacts of Thickness of Nafion Series Membranes and Relative Humidity on PEMFC Operated at 363 K and 373 K

Numerical Simulation on Impacts of Thickness of Nafion Series Membranes and Relative Humidity on PEMFC Operated at 363 K and 373 K

Numerical Analysis on Impact of Thickness of PEM and GDL with and without MPL on Coupling Phenomena in PEFC Operated at Higher Temperature Such as 363 K and 373 K

Impact of Separator Thickness on Temperature Distribution in Single Polymer Electrolyte Fuel Cell Based on 1D Heat Transfer

Contact Info

Product

Resources

About