HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

Methanol fuel cell

2008-02-04View Original

Thread Content

As relatively forward-looking downstream products of methanol, which are the research institutions in China focused on methanol fuel cells? Are there any installations under construction in the country? Does anyone have technical or economic information on this topic?
Reply #22008-02-04
The so-called Direct Methanol Fuel Cell is a type of Proton Exchange Membrane Fuel Cell (PEMFC). It uses aqueous solutions and gaseous methanol as fuel sources directly, without the need to reprocess methanol, gasoline, natural gas, etc. through a reformer in order to extract hydrogen for power generation. Compared to proton exchange membrane fuel cells (PEMFCs), direct methanol fuel cells (DMFCs) have advantages such as the ability to generate electricity at low temperatures, lower risk associated with the fuel components, and a simpler cell structure, which make them a viable option for use in portable electronic devices.   Direct methanol fuel cells are a variant of proton exchange membrane fuel cells; they use methanol directly without the need for prior reformation. Methanol is converted into carbon dioxide, protons, and electrons at the anode. As in a standard proton exchange membrane fuel cell, protons pass through the proton exchange membrane to react with oxygen at the cathode, while electrons travel through the external circuit to the cathode where they do work. Under alkaline conditions, the overall reaction is: 2CH4O + 3O2 = 2CO2 + 4H2O. At the anode: 3O2 + 12e– + 6H2O = 12OH–. At the cathode: 2CH4O – 12e– + 12OH– = 2CO2 + 10H2O. Under acidic conditions, the overall reaction remains the same. At the anode: 3O2 + 12e– + 12H+ = 6H2O. At the cathode: 2CH4O – 12e– + 2H2O = 12H+ + 2CO2. The desired operating temperature for this type of battery is below 120°C, which is slightly higher than that of standard proton exchange membrane fuel cells; its efficiency is around 40%. Direct methanol fuel cells are a variant of proton exchange membrane fuel cells; they use methanol directly without the need for prior reformation. Methanol is converted into carbon dioxide and hydrogen at the anode, just as in a standard proton exchange membrane fuel cell, after which hydrogen reacts with oxygen. The desired operating temperature for this type of battery is 120°C, which is slightly higher than that of standard proton exchange membrane fuel cells; its efficiency is around 40%. Its drawback is that converting methanol into hydrogen and carbon dioxide at low temperatures requires more platinum catalyst than conventional proton exchange membrane fuel cells. However, this increased cost is offset by the convenience of using liquid fuel and the ability to operate without the need for reforming. The technology used in direct methanol fuel cells is still in its early stages of development, but it has successfully demonstrated that it can be used as a power source for mobile phones and laptops, and it holds potential for use by specific end-users in the future.
Reply #32008-07-02
What is the status of industrialization of methanol fuel cells in China?
Reply #42008-07-02
I request the original poster and industry experts to provide more information on methanol fuel cells for everyone to learn from*
Reply #52008-07-02
Both Tsinghua University and Tianjin University are conducting research! It seems that industrialization in the domestic market has made no progress at all!
Reply #62008-07-03
Among fuel cells, proton exchange membrane fuel cells are the ones that have seen the most activity in terms of industrialization. Methanol fuel cells exist in various laboratories, but no industrialization has been achieved yet. Proton exchange membrane fuel cells are being developed by institutions such as the Dalian Institute of Chemical Physics, SAIC Group, Shanghai Shenli Technology Co., Ltd., and Xinyuan Power Co., Ltd

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.