Enhanced mechanical properties and proton conductivity of Nafion-SPEEK-GO composite membranes for fuel cell applications

Ananta Kumar Mishra; Nam Hoon Kim; Daeseung Jung; Joong Hee Lee

doi:10.1016/j.memsci.2014.01.073

Enhanced mechanical properties and proton conductivity of Nafion-SPEEK-GO composite membranes for fuel cell applications

Ananta Kumar Mishra
, Nam Hoon Kim
, Daeseung Jung
, Joong Hee Lee^*

^*Corresponding author for this work

Department of Nano Convergence Engineering

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

92 Scopus citations

Abstract

Nafion-sulfonated polyether ether ketone (SPEEK)-graphene oxide (GO) nanocomposite membranes were prepared. The effects of the degree of oxidation of GO on the physical properties of the nanocomposites have been investigated using two varieties of GOs with low degree (GO) and high degree (HGO) of oxidation. The concentrations of the oxygen functionality in GO and HGO are 28.4% and 31.8%, respectively as calculated by XPS analysis, but the size of HGO is less than that of GO. Thermal stabilities of the composites are similar except for minor differences in weight loss of various composites due to the presence of different amounts of -SO₃H and oxygen functionalities. The storage modulus of the HGO-based composite is the highest among the composites and the addition of SPEEK is detrimental to the mechanical properties in all cases. Optimum proton conductivity of 322.2mScm^-1 is noted with Nafion containing 1wt% SPEEK and 0.75wt% HGO at 100% relative humidity (RH) and 90°C compared to 198mScm^-1 under similar conditions. The maximum power density of 621.2mWcm^-2 has been noted for the same composite membrane at 80°C and 100% RH.

Original language	English
Pages (from-to)	128-135
Number of pages	8
Journal	Journal of Membrane Science
Volume	458
DOIs	https://doi.org/10.1016/j.memsci.2014.01.073
State	Published - 2014.05.15

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Fuel cell
Mechanical properties
Membrane
Proton conductivity
Sulfonated polyether ether ketone

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Petroleum
Engineering - Chemical
Chemistry
Biological Sciences

Access to Document

10.1016/j.memsci.2014.01.073

Cite this

@article{3f077b3d8e9c4e5f9f37ebe787bb324c,

title = "Enhanced mechanical properties and proton conductivity of Nafion-SPEEK-GO composite membranes for fuel cell applications",

abstract = "Nafion-sulfonated polyether ether ketone (SPEEK)-graphene oxide (GO) nanocomposite membranes were prepared. The effects of the degree of oxidation of GO on the physical properties of the nanocomposites have been investigated using two varieties of GOs with low degree (GO) and high degree (HGO) of oxidation. The concentrations of the oxygen functionality in GO and HGO are 28.4\% and 31.8\%, respectively as calculated by XPS analysis, but the size of HGO is less than that of GO. Thermal stabilities of the composites are similar except for minor differences in weight loss of various composites due to the presence of different amounts of -SO3H and oxygen functionalities. The storage modulus of the HGO-based composite is the highest among the composites and the addition of SPEEK is detrimental to the mechanical properties in all cases. Optimum proton conductivity of 322.2mScm-1 is noted with Nafion containing 1wt\% SPEEK and 0.75wt\% HGO at 100\% relative humidity (RH) and 90°C compared to 198mScm-1 under similar conditions. The maximum power density of 621.2mWcm-2 has been noted for the same composite membrane at 80°C and 100\% RH.",

keywords = "Fuel cell, Mechanical properties, Membrane, Proton conductivity, Sulfonated polyether ether ketone",

author = "Mishra, \{Ananta Kumar\} and Kim, \{Nam Hoon\} and Daeseung Jung and Lee, \{Joong Hee\}",

year = "2014",

month = may,

day = "15",

doi = "10.1016/j.memsci.2014.01.073",

language = "English",

volume = "458",

pages = "128--135",

journal = "Journal of Membrane Science",

issn = "0376-7388",

}

TY - JOUR

T1 - Enhanced mechanical properties and proton conductivity of Nafion-SPEEK-GO composite membranes for fuel cell applications

AU - Mishra, Ananta Kumar

AU - Kim, Nam Hoon

AU - Jung, Daeseung

AU - Lee, Joong Hee

PY - 2014/5/15

Y1 - 2014/5/15

N2 - Nafion-sulfonated polyether ether ketone (SPEEK)-graphene oxide (GO) nanocomposite membranes were prepared. The effects of the degree of oxidation of GO on the physical properties of the nanocomposites have been investigated using two varieties of GOs with low degree (GO) and high degree (HGO) of oxidation. The concentrations of the oxygen functionality in GO and HGO are 28.4% and 31.8%, respectively as calculated by XPS analysis, but the size of HGO is less than that of GO. Thermal stabilities of the composites are similar except for minor differences in weight loss of various composites due to the presence of different amounts of -SO3H and oxygen functionalities. The storage modulus of the HGO-based composite is the highest among the composites and the addition of SPEEK is detrimental to the mechanical properties in all cases. Optimum proton conductivity of 322.2mScm-1 is noted with Nafion containing 1wt% SPEEK and 0.75wt% HGO at 100% relative humidity (RH) and 90°C compared to 198mScm-1 under similar conditions. The maximum power density of 621.2mWcm-2 has been noted for the same composite membrane at 80°C and 100% RH.

AB - Nafion-sulfonated polyether ether ketone (SPEEK)-graphene oxide (GO) nanocomposite membranes were prepared. The effects of the degree of oxidation of GO on the physical properties of the nanocomposites have been investigated using two varieties of GOs with low degree (GO) and high degree (HGO) of oxidation. The concentrations of the oxygen functionality in GO and HGO are 28.4% and 31.8%, respectively as calculated by XPS analysis, but the size of HGO is less than that of GO. Thermal stabilities of the composites are similar except for minor differences in weight loss of various composites due to the presence of different amounts of -SO3H and oxygen functionalities. The storage modulus of the HGO-based composite is the highest among the composites and the addition of SPEEK is detrimental to the mechanical properties in all cases. Optimum proton conductivity of 322.2mScm-1 is noted with Nafion containing 1wt% SPEEK and 0.75wt% HGO at 100% relative humidity (RH) and 90°C compared to 198mScm-1 under similar conditions. The maximum power density of 621.2mWcm-2 has been noted for the same composite membrane at 80°C and 100% RH.

KW - Fuel cell

KW - Mechanical properties

KW - Membrane

KW - Proton conductivity

KW - Sulfonated polyether ether ketone

UR - https://www.scopus.com/pages/publications/84894305257

U2 - 10.1016/j.memsci.2014.01.073

DO - 10.1016/j.memsci.2014.01.073

M3 - Journal article

AN - SCOPUS:84894305257

SN - 0376-7388

VL - 458

SP - 128

EP - 135

JO - Journal of Membrane Science

JF - Journal of Membrane Science

ER -

Enhanced mechanical properties and proton conductivity of Nafion-SPEEK-GO composite membranes for fuel cell applications

Abstract

UN SDGs

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

Other files and links

Fingerprint

Cite this