PMID- 29300368 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1996-1944 (Print) IS - 1996-1944 (Electronic) IS - 1996-1944 (Linking) VI - 11 IP - 1 DP - 2018 Jan 4 TI - Using Electrospinning-Based Carbon Nanofiber Webs for Methanol Crossover Control in Passive Direct Methanol Fuel Cells. LID - 10.3390/ma11010071 [doi] LID - 71 AB - Methanol crossover (MCO) significantly affects the performance of a direct methanol fuel cell (DMFC). In order to reduce its effect, this study presents in-house carbon nanofiber webs (CNWs) used as a porous methanol barrier for MCO control in a passive DMFC. The CNW is made from polyacrylonitrile (PAN) by using electrospinning and heat treatment. The impacts of PAN concentration and carbonizing temperature on the material properties are considered. The concentration of PAN has a great effect on the micro structures of the CNWs since a higher concentration of PAN leads to a larger nanofiber diameter and lower porosity. A higher carbonizing temperature helps promote the sample conductivity. The use of CNWs has twofold effects on the cell performance. It helps significantly enhance the cell performance, especially at a low methanol concentration due to its balanced effect on reactant and product management. There is an increase in peak power density of up to 53.54% when the CNW is used, in contrast with the conventional DMFC at 2 mol/L. The dynamic and constant-load performances of the fuel cell based on CNWs are also investigated in this work. FAU - Yuan, Wei AU - Yuan W AUID- ORCID: 0000-0003-4235-2533 AD - School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China. mewyuan@scut.edu.cn. FAU - Fang, Guoyun AU - Fang G AD - School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China. megyfang@mail.scut.edu.cn. FAU - Li, Zongtao AU - Li Z AUID- ORCID: 0000-0001-7745-2783 AD - School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China. meztli@scut.edu.cn. FAU - Chen, Yonghui AU - Chen Y AD - School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China. meyhchen@mail.scut.edu.cn. FAU - Tang, Yong AU - Tang Y AD - School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China. ytang@scut.edu.cn. LA - eng PT - Journal Article DEP - 20180104 PL - Switzerland TA - Materials (Basel) JT - Materials (Basel, Switzerland) JID - 101555929 PMC - PMC5793569 OTO - NOTNLM OT - carbon nanofiber webs OT - direct methanol fuel cell OT - electrospinning OT - methanol crossover OT - passive COIS- The authors declare no conflict of interest. EDAT- 2018/01/05 06:00 MHDA- 2018/01/05 06:01 PMCR- 2018/01/04 CRDT- 2018/01/05 06:00 PHST- 2017/12/01 00:00 [received] PHST- 2017/12/29 00:00 [revised] PHST- 2018/01/02 00:00 [accepted] PHST- 2018/01/05 06:00 [entrez] PHST- 2018/01/05 06:00 [pubmed] PHST- 2018/01/05 06:01 [medline] PHST- 2018/01/04 00:00 [pmc-release] AID - ma11010071 [pii] AID - materials-11-00071 [pii] AID - 10.3390/ma11010071 [doi] PST - epublish SO - Materials (Basel). 2018 Jan 4;11(1):71. doi: 10.3390/ma11010071.