Ranjani, M. and Al-Sehemi, Abdullah G. and Pannipara, Mehboobali and Aziz, Md. Abdul and Phang, Siew Moi and Ng, Fong Lee and kumar, G. Gnana (2020) SnO2 nanocubes/bentonite modified SPEEK nanocomposite composite membrane for high performance and durable direct methanol fuel cells. Solid State Ionics, 353. p. 115318. ISSN 0167-2738, DOI https://doi.org/10.1016/j.ssi.2020.115318.
Full text not available from this repository.Abstract
Tin oxide nanocubes/sulfonated bentonite (SnO2/sBH) nanocomposite blended with acidified poly ether ether ketone (SPEEK) solid state electrolyte is developed for DMFCs. Morphological investigations reveal the existence of SnO2 nanocubes on sheet-like structure of sBH and the uniform dispersion of above composite on SPEEK matrix. The layered sheet-like structure of BH act as heat diffusion barrier and the ceramic feature of SnO2 further improves the thermal stability of a SPEEK membrane. The exposed large surface area of BH and tightly bound water molecules in SnO2 and -SO3H sites increase the water retention properties, which consequently enhance the ionic conductivity of SPEEK/sBH/SnO2 composite membrane. Furthermore, the high aspect ratio of sBH and methanol resistive characteristic of SnO2 lower the methanol diffusion channels in the sBH/SnO2 composite membrane. With the coalition of above significant electrochemical properties, SPEEK/sBH/SnO2 solid electrolyte demonstrates the high DMFC power density and excellent durability, which showers light on the viability of prepared membrane in high performance and durable DMFCs. © 2020 Elsevier B.V.
| Item Type: | Article |
|---|---|
| Funders: | Council of Scientific and Industrial Research (CSIR), New Delhi Major Project Grant No.: 01(2997)19/EMR-II, Deanship of Scientific Research at King Khalid University for funding this work through Research Group Project under grant number R.G.P.2/48/40 |
| Uncontrolled Keywords: | Aspect ratio; Bound water; Layered silicate; Nanocubes; Tortous path |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 13 Aug 2020 04:25 |
| Last Modified: | 13 Aug 2020 04:25 |
| URI: | http://eprints.um.edu.my/id/eprint/25330 |
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