利用电化学质谱对醇类燃料电池的原位检测
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- 英文论文题名：In-situ monitor of DAFC by on-line electrochemical mass spectrometry
- 论文作者：洪宇浩 ; 周志有 ; 孙世刚
- 英文论文作者：Yuhao Hong ; Zhiyou Zhou ; Shigang Sun ; College of Chemistry and Chemical Engineering ; Xiamen University
- 年：2016
- 作者机构：厦门大学化学化工学院;
- 论文关键词：直接醇类燃料电池 ; 电化学质谱 ; 差分真空进样
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十分会：化学电源
- 语种：中文
- 分类号：O657;TM911.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十分会 ; 化学电源
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：169k
- 原文格式：D
- 会议级别：全国
摘要
直接醇类燃料电池由于具有应用范围广、成本低廉,转化效率高、环保等优点,近些年吸引了越来越多研究人员的目光。原位表征技术能够快速方便地展示研究体系在实际工作条件下的物种、温度等分布情况,对于研究体系具有极高的参考价值。然而目前对于燃料电池的原位实时物种表征手段尚且匮乏,针对该情况我们通过发展差分真空液体进样的电化学质谱接头,实现了对直接醇类燃料电池中质子交换膜产物物种的在线快速监测与实时跟踪。通过该方法,我们得到甲醇燃料电池中PEM处的产物在0.2V-0.6V的分布情况以及不同流速下流场板末端甲醇氧化的转化率以及产物的扩散情况。
The DAFC has attracted much more interests of scientists with its advantages like high theoretical efficiency,low cost and environmental-friendly.The in-situ characterization technique was tremendously valuable for it can easily and clearly demonstrate the species and temperature distribution of the research system in real time.Regrettably,though,it lacks in-situ technique to characterize DAFC for its black box property.In this work,the differential vacuum liquid sample introduction system was used in electrochemical mass spectrometry to monitor the species of membrane,catalyst layer,flow channels in DAFC.By this method,the distribution of products in DMFC PEM/catalyst layer from 0.2 to 0.6V was investigated.The conversions of Methanol and the diffusion of products at different flow velocity were obtained by monitoring the outlet of flow channels.
The DAFC has attracted much more interests of scientists with its advantages like high theoretical efficiency,low cost and environmental-friendly.The in-situ characterization technique was tremendously valuable for it can easily and clearly demonstrate the species and temperature distribution of the research system in real time.Regrettably,though,it lacks in-situ technique to characterize DAFC for its black box property.In this work,the differential vacuum liquid sample introduction system was used in electrochemical mass spectrometry to monitor the species of membrane,catalyst layer,flow channels in DAFC.By this method,the distribution of products in DMFC PEM/catalyst layer from 0.2 to 0.6V was investigated.The conversions of Methanol and the diffusion of products at different flow velocity were obtained by monitoring the outlet of flow channels.
引文
[1]Choi,C.H.;Baldizzone,C.;Grote,J.P.;Schuppert,A.K.;Jaouen,F.;Mayrhofer,K.J.;Angew.Chem.Int.Ed.2015,54,12753
[2]V.Rao.;Hariyanto.;C.Cremers.;U.Stimming.;Fuel Cells,2007,5,417
[2]V.Rao.;Hariyanto.;C.Cremers.;U.Stimming.;Fuel Cells,2007,5,417