Analysis of Methanol Transport and Concentration Controlling Strategy in Direct Methanol Fuel Cell

doi:10.11944/j.issn.1000-0518.2019.10.190052

Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (10): 1211-1220.DOI: 10.11944/j.issn.1000-0518.2019.10.190052

• Full Papers • Previous Articles

Analysis of Methanol Transport and Concentration Controlling Strategy in Direct Methanol Fuel Cell

DENG Guangrong^a^b^d,LIANG Liang^a^b^d,LI Chenyang^a^d,LIU Changpeng^a^c^d^*(),GE Junjie^a^c^d,XING Wei^a^c^d^*()

^aLaboratory of Advanced Power Sources,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
^bUniversity of Chinese Academy of Sciences,Beijing 100049,China
^cState Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
^dJilin Province Key Laboratory of Advanced Low Carbon Power Sources,Changchun 130022,China

Received:2019-02-28 Accepted:2019-05-06 Published:2019-10-01 Online:2019-09-29
Contact: LIU Changpeng,XING Wei
Supported by:
Supported by the National Natural Science Foundation of China(No.21673221, No.U1601211), and the Jilin Province Science and Technology Development Program(No.20170203003SF)

Abstract

Abstract:

The methanol concentration plays an important role in the performance of direct methanol fuel cells(DMFCs). This work aims to establish an effective controlling strategy of methanol concentration for DMFC power system. We combined the methanol conservation equation and the thermal conservation equation to analyze the mass transport process inside DMFC. The concentration strategy was established based on the two parameters, i.e., charge and temperature. The strategy was effective clarified by the relationship of temperature and concentration. By applying the strategy, the DMFC power system realizes stable operation over 420 min. The appropriate methanol concentration of power system range from 0.70 to 0.87 mol/L. This strategy achieves the goal of methanol concentration control and will play a vital role in the DMFC power systems.

Key words: direct methanol fuel cell, methanol transport, concentration controlling, temperature effect

DENG Guangrong, LIANG Liang, LI Chenyang, LIU Changpeng, GE Junjie, XING Wei. Analysis of Methanol Transport and Concentration Controlling Strategy in Direct Methanol Fuel Cell[J]. Chinese Journal of Applied Chemistry, 2019, 36(10): 1211-1220.

References

[1]	Meyers J P,Newman J.Simulation of the Direct Methanol Fuel Cell-Ⅱ.Modeling and Data Analysis of Transport and Kinetic Phenomena[J]. J Electrochem Soc,2002,149:A718-A728.
[2]	Zhao T S,Xu C,Chen R,et al. Mass Transport Phenomena in Direct Methanol Fuel Cells[J]. Prog Energy Combust Sci,2009,35:275-292.
[3]	Mehmood A,Scibioh M A,Prabhuram J,et al. A Review on Durability Issues and Restoration Techniques in Long-Term Operations of Direct Methanol Fuel Cells[J]. J Power Sources,2015,297:224-241.
[4]	Zhao H,Shen J,Zhang J,et al. Liquid Methanol Concentration Sensors for Direct Methanol Fuel Cells[J]. J Power Sources,2006,159:626-636.
[5]	Chang C L,Chen C Y,Sung C C,et al. Fuel Sensor-Less Control of a Liquid Feed Fuel Cell under Dynamic Loading Conditions for Portable Power Sources(Ii)[J]. J Power Sources,2010,195:1427-1434.
[6]	Lian K Y,Yang C M.Sensor-Less Adaptive Fuel Concentration Control for Direct Methanol Fuel Cells under Varying Load[J]. J Power Sources,2013,231:239-245.
[7]	An M G,Mehmood A,Ha H Y. A Sensor-Less Methanol Concentration Control System Based on Feedback from the Stack Temperature[J]. Appl Energy,2014,131:257-266.
[8]	An M G,Mehmood A,Ha H Y.Sensor-Less Control of the Methanol Concentration of Direct Methanol Fuel Cells at Varying Ambient Temperatures[J]. Appl Energy,2014,129:104-111.
[9]	Chiu Y J,Lien H C.A Strategy of Estimating Fuel Concentration in a Direct Liquid-Feed Fuel Cell System[J]. J Power Sources,2006,159:1162-1168.
[10]	Ha T J,Kim J H,Joh H I,et al. Sensor-Less Control of Methanol Concentration Based on Estimation of Methanol Consumption Rates for Direct Methanol Fuel Cell Systems[J]. Int J Hydrogen Energy,2008,33:7163-7171.
[11]	Wang Z H,Wang C Y.Mathematical Modeling of Liquid-Feed Direct Methanol Fuel Cells[J]. J Electrochem Soc,2003,150:A508-A519.
[12]	Kulikovsky A A.Analysis of Thermal Stability of Direct Methanol Fuel Cell Stack Operation[J]. J Electrochem Soc,2008,155:B509-B516.
[13]	Shaffer C E,Wang C Y.Role of Hydrophobic Anode MPL in Controlling Water Crossover in DMFC[J]. Electrochim Acta,2009,54:5761-5769.
[14]	Jung S,Leng Y,Wang C Y.Role of Co2 in Methanol and Water Transport in Direct Methanol Fuel Cells[J]. Electrochim Acta,2014,134:35-48.
[15]	Deng G R,Liang L,Jin Z,et al. Enhancing Mass Transport in Direct Methanol Fuel Cell by Optimizing the Microstructure of Anode Microporous Layer[J]. AIChE J,2018,64:3519-3528.
[16]	Cai W W,Li S T,Li C Y,et al. A Model Based Thermal Management of Dmfc Stack Considering the Double-Phase Flow in the Anode[J]. Chem Eng Sci,2013,93:110-123.

Analysis of Methanol Transport and Concentration Controlling Strategy in Direct Methanol Fuel Cell

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 1

Recommended Articles

Metrics

Comments