Title |
SPEEK Membrane of Ultrahigh Stability Enhanced by Functionalized Carbon Nanotubes for Vanadium Redox Flow Battery
|
---|---|
Published in |
Frontiers in Chemistry, July 2018
|
DOI | 10.3389/fchem.2018.00286 |
Pubmed ID | |
Authors |
Mei Ding, Xiao Ling, Du Yuan, Yuanhang Cheng, Chun Wu, Zi-Sheng Chao, Lidong Sun, Chuanwei Yan, Chuankun Jia |
Abstract |
Proton exchange membrane is the key factor of vanadium redox flow battery (VRB) as their stability largely determine the lifetime of the VRB. In this study, a SPEEK/MWCNTs-OH composite membrane with ultrahigh stability is constructed by blending sulfonated poly(ether ether ketone) (SPEEK) with multi-walled carbon nanotubes toward VRB application. The carbon nanotubes disperse homogeneously in the SPEEK matrix with the assistance of hydroxyl group. The blended membrane exhibits 94.2 and 73.0% capacity retention after 100 and 500 cycles, respectively in a VRB single cell with coulombic efficiency of over 99.4% at 60 mA cm-2 indicating outstanding capability of reducing the permeability of vanadium ions and enhancing the transport of protons. The ultrahigh stability and low cost of the composite membrane make it a competent candidate for the next generation larger-scale vanadium redox flow battery. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 45 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 12 | 27% |
Researcher | 6 | 13% |
Student > Bachelor | 4 | 9% |
Student > Master | 3 | 7% |
Other | 3 | 7% |
Other | 4 | 9% |
Unknown | 13 | 29% |
Readers by discipline | Count | As % |
---|---|---|
Chemistry | 10 | 22% |
Chemical Engineering | 6 | 13% |
Engineering | 4 | 9% |
Materials Science | 4 | 9% |
Energy | 3 | 7% |
Other | 4 | 9% |
Unknown | 14 | 31% |