Achievements of PEMFC
1. R&D of GDL and MEA
G-Lab homemade GDL:Model: GL23，containing Toray 060 carbon paper (0.15mm in Thickness) and homemade micro porous layer (MPL).
Comparison of gas permeability
Contact angles for the MPL side of GL23
| Test NO. | Theta [deg] | |
| 1 | 159.5 | |
| 2 | 168 | |
| 3 | 157.5 | |
| 4 | 164.6 | |
| 5 | 161.4 | |
| Average | 162.2 ±4.16 | |
| MPL side |
I-V curve comparison of G-Lab MEA and Gore MEA
（The Right tables show the testing data for each MEA）
The testing data
for the G-Lab MEA
The testing data
for the Gore MEA
Important information
1.Basic characteristic information for the MEAs
(1) Active area: 25c㎡ for both the G-Lab MEA and Gore MEA；
(2) Fabrication method: Catalyst coated membrane (CCM) for both the G-Lab MEA and Gore MEA；
(3) Materials for the MEAs:
(a) G-Lab MEA: Membrane: Gore, 15um in thickness, Catalyst: JM9100, GDL: homemade GL23；
(b) Gore MEA: Membrane: 15um in thickness, Catalyst: unknown, GDL: unknown
2.Evaluation description for the MEAs
(1) Testing bench for both MEAs: CHINO 5100 (Japan)；
(2)Three-Step Activation Method[*] was used for both MEAs, the data shown in the above figure and tables are the results from the third step of the Three-Step activation method;
(3) The same operating conditions were used for testing the two MEAs:
(a) Pressure: No back pressure (ambient pressure) for both the anode and the cathode;
(b) Humidification tank temperatures were set as 60℃ for both the anode and cathode, cell temperature was set as 70℃, i.e., the relative humidities at both inlets were around 63.5%;
(c) Hydrogen utilization and air utilization were 68% and 40% respectively.
Important information
Double-blind testing: GL23 fabricated by G-Lab was sent by a middleman to a fuel cell company. Before the testing results were presented to the middleman, both G-Lab and the fuel cell company didn’t know who the counterpart was, i.e., the whole process is double-blinded.
The purpose of the double-blind testing: Excluding the disturbing factors on the tested sample.
Operation explanation: The fuel cell company first tested a 25c㎡ MEA integrating a commercialized CCM and commercialized GDLs, which is noted as "standard" as shown in the following I-V curve figure and testing data table. After that, they tested another 25cm2 MEA integrating the same type of commercialized CCM and two pieces of GL23 GDL, which is designated as “X” as shown in the following I-V curve figure and testing data table.
| Operation conditions and testing procedure | |
| Cell temperature | 75℃ |
| Cathode/Anode reactants | Air/H2 |
| Cathode/Anode back pressure (gage) | 100kPa |
| Cathode/Anode dew point temperature | 49℃/55℃ |
| Cathode/Anode flow rate and stoichiometric ratio | 0.511L/min/0.178 L/min 1.8:1.5 |
| Testing procedure | From 0A/c㎡ to 2.8A/c㎡, six-minute testing was conducted for each current density. Average voltage within the last two minutes was presented for each current density. |
I-V curve comparison of “X” and “Standard” MEA
（The Right table shows the testing data above 2A/c㎡
for each MEA）
| Current density (A/c㎡) | X(V) | standard(V) |
| 2.0 | 0.603 | 0.546 |
| 2.2 | 0.585 | 0.501 |
| 2.4 | 0.57 | 0.429 |
| 2.5 | 0.564 | - |
| 2.6 | 0.557 | - |
| 2.8 | 0.539 | - |
Comparison of testing data above 2A/c㎡
between “X” and “Standard” MEA
2. R&D of PEMFC stack and system
In 2006, a detailed report was given for the first time on fabricating a large MEA of 600c㎡ based on CCM method and the development of a 10kW stack based on this MEA in an international journal.
In 2016, the size of the 10kW stack was reduced to one-third of the 2006 model based on the optimized MEA and thin graphite bipolar plate technology.
In 2012, a 100W air-cooled PEMFC stack was developed (Left figure); In 2014, its patent was authorized (Right figure).
In 2018, the specific power density of the air-cooled PEMFC stack was increased to 440W/kg (Left figure: a 200W stack) based on the optimized stack design and MEA performance. The project won the second prize of the 11th National College Student Energy Conservation and Emission Reduction Social Practice and Technology Competition in 2018 (Left figure).
Left figure: An all-pneumatic small-scale hydrogen production system based on powder hydrolysis has been developed for the air-cooled PEMFC. This system can use any hydrogen-containing powder such as sodium borohydride powder, magnesium hydride powder and aluminum powder to generating a hydrogen wih stable flow rate (about 2 liters/min) and a purity of 99.99%. Right figure: the patent for the system was authorized in 2014.
5kW PEMFC system (Left); Fuel processor (right, cooperated with Professor Ming Li at Tong Ji University)
PEMFC testing system for water cooling stack (Left in the figure) Integrated bench for stack assembling and testing (Right in the figure)
In 2013, the patent for the Integrated bench was authorized.
Achievements of microfluidic oxygen (MFO) technology based wound therapy
1. Principle and application
Microfluidic Oxygen (MFO) wound therapy device (Left figure)
The principle of MFO wound therapy (Right figure)
Before the MFO therapy
After the MFO therapy
The female arm had a medical accident caused by the failure of the push-up sugar treatment. The wound was severely infected for more than two months before using the MFO therapy, and obvious green mildew could be seen, and other treatment methods were ineffective. The wound was healed after 37 days of the MFO therapy.
Before the MFO therapy
After the MFO therapy
Female, 91 years old, was hospitalized for many days with fractures and could not eat independently. During this period, she relied on infusion to maintain her life. Pressure ulcer existed for more than one month. Before using the MFO therapy, the conventional treatments were ineffective and the pressure ulcer were enlarged. The wound was healed after 100 days of the MFO therapy.
Typical cases of microfluidic oxygen (MFO) wound therapy device
2. Patents and Qualifications
Chinese authorized patent
U.S. authorized patent
Japanese authorized patent
Registration certificate in mainland China
Registration certificate in Hong Kong, China
CE certification
ISO certification
Patents of G-Lab
Authorized patent in foreign countries
[GP] Authorized U.S. Patent：US 9580820B2 Self-breathing electrochemical oxygenerator
[GP] Authorized Japanese patent：3202647 電気化学酸素発生器
Authorized patent or patent pending in China
Invention patent
[GP] Application announcement number：CN113108843B The invention relates to a test fixture and a test method for a micro-oxygen generator and its oxygen producing parts
[GP] Application announcement number：CN113599236B Microfluidic oxygen wound treatment system
[GP] Application announcement number：CN113549944B A fabricating method and a set of fabrication tools and molds for the microfluidic oxygen-producing module
[GP] Application announcement number：CN112522728B Microfluidic oxygen-producing module and the related oxygen generating system
[GP] Application announcement number：CN102013493B Bipolar plate for air-cooled proton exchange membrane fuel cell
[GP] Application announcement number：CN102790230B Air-cooled proton exchange membrane fuel cell stack
[GP] Application announcement number：CN102786031B Hydrogen production system based on powder hydrolysis
[GP] Application announcement number：CN102683716B United structure of bipolar plate and membrane electrode assembly
[GP] Application announcement number：CN102074720B ntegrated bench for stack assembling and testing
[GP] Application announcement number：CN102211000B Quantitative discharge structure with the intermediate exhaust pipe
[GP] Application announcement number：CN102034987B Impregnation and spin-drying device for the pretreatment of carbon paper of proton exchange membrane fuel cell
[GP] Application announcement number：CN101552339B A fabrication method for the bipolar plate of proton exchange membrane fuel cell based on low-temperature catalytic graphitization
[GP] Application announcement number：CN101587962B Cooling system for proton exchange membrane fuel cell
[GP] Application announcement number：CN101388463B MEA and its fabrication method of proton exchange membrane water electrolyzer
[GP] Application announcement number：CN100385184C A combined system of fuel cell and air source heat pump water heater
[GP] Application announcement number：CN100346521C Proton exchange membrane fuel cell stack with bypass air preheating section
[GP] Application announcement number：CN105040021B Microfluidic oxygen wound therapy device and its oxygen generating part
[GP] Application announcement number：CN103173781B Self-breathing electrochemical oxygen system
[GP] Application announcement number：CN103205771B Method of storage and usage of the self-breathing electrochemical oxygen generator
[GP] Application announcement number：CN102851681B Self-breathing electrochemical oxygen generator
[GP] Application announcement number：CN102330107B Self-breathing electrochemical oxygen module based on adhesive sealing
[GP] Application announcement number：CN101969129B Method for mass production of the membrane electrode assembly and its fixture for fabrication.
[GP] Authorized announcement number：CN101967651B Self-breathing electrochemical oxygen producer
[GP] Authorized announcement number：CN102071432B Self-breathing electrochemical oxygen generator with the replaceable module
[GP] Authorized announcement number：CN101967650B Self-breathing electrochemical oxygen component
Utility model patent
[GP] Authorized patent number：ZL202120824997.8 Testing Fixture for a Microfluidic oxygen generator and its Oxygen Generating Component
[GP] Authorized patent number：ZL202121988303.0 Microfluidic oxygen wound treatment system
[GP] Authorized patent number：ZL2020203232304.0 Microfluidic oxygen-producing module and the related pure oxygen generating system
[GP] Authorized patent number：ZL202120825466.0 A set of fabrication tools and molds for microfluidic oxygen-producing module
[GP] Authorized announcement number：CN2010205560539 MEA hot press mold for mass production
[GP] Authorized announcement number：CN2014200889410 Microfluidic oxygen dressing
[GP] Authorized announcement number：CN201520381167.7 Microfluidic oxygen wound therapy device
[GP] Authorized announcement number：CN205268679U Negative pressure and microfluidic oxygen integrated system for wound therapy
Appearance patent
[GP] Authorized announcement number：CN303693076S Microfluidic oxygen and negative pressure integrated device for wound therapy
[GP] Authorized announcement number：CN 201230602326.3 Microfluidic oxygen generator.
[GP] Authorized announcement number：CN 201530142507.6 Wound therapy device.
[GP] Authorized announcement number：CN 201530142828.6 Wound therapy device (main part).
[GP] Authorized announcement number：CN 201530142867.6 Wound therapy device (microfluidic oxygen generating module).
Standard
[GS] Jiangsu Provincial Second Class Medical Devices Su Food and Drug Administration (zhun) 2014 No. 2540401 (Wound Therapy device) Registration Standard
