Loading…
Academic Journal
Swelling-induced morpholine functionalized adamantane-containing poly(aryl ether ketone) membranes for vanadium flow batteries
Bengui Zhang, Xueting Zhang, Qian Liu, Minghui Zhao, Zhirong Yang, Yanshi Fu, Enlei Zhang, Kangjun Wang, Guosheng Wang, Zhigang Zhang, Shouhai Zhang
Resources Chemicals and Materials, Vol 1, Iss 3, Pp 268-274 (2022)
Saved in:
| Title | Swelling-induced morpholine functionalized adamantane-containing poly(aryl ether ketone) membranes for vanadium flow batteries |
|---|---|
| Authors | Bengui Zhang, Xueting Zhang, Qian Liu, Minghui Zhao, Zhirong Yang, Yanshi Fu, Enlei Zhang, Kangjun Wang, Guosheng Wang, Zhigang Zhang, Shouhai Zhang |
| Publication Year |
2022
|
| Source |
Resources Chemicals and Materials, Vol 1, Iss 3, Pp 268-274 (2022)
|
| Description |
Swelling-induced morpholine functionalized adamantane-containing poly(aryl ether ketone) (MAPEK) membranes were prepared for vanadium flow batteries. MAPEK membranes were prepared from chloromethylated polymer and morpholine and further swelling-induced with hot phosphoric acid to obtain membranes with enhanced ionic conductivity. The swelling, selectivity, and ionic conductivity of MAPEK membranes were regulated by varying the swelling temperature. Selective swelling-induced microphase separation in MAPEK membranes, forming wider ion transport pathways and resulting in low area resistance. The unique rigid adamantane-containing backbone limited the swelling of membranes. Consequently, MAPEK membranes showed excellent selectivity and conductivity (vanadium ion permeability coefficient of MAPEK membranes was lower than 3.82 × 0−7 cm2min−1) (Nafion212 membrane, 42.5 × 0−7 cm2min−1), and MAPEK-150 membrane exhibited low area resistance (0.17 Ωcm2). The vanadium flow batteries (VFB) with MAPEK-150 membrane exhibited high energy efficiency (91.1% at 80 mAcm−2, 81.4% at 200 mAcm−2). Furthermore, MAPEK membranes showed good stability in VFB and oxidative electrolytes. The swelling-induced method utilized in this work is a versatile and facile method to enhance the conductivity of ion-exchange membranes.
|
| Document Type |
article
|
| Language |
English
|
| Publisher Information |
KeAi Communications Co., Ltd., 2022.
|
| Subject Terms | |
