US 12,405,207 B2
System and method for testing durability of gas diffusion layer (GDL)
Zhengnan Li, Shenzhen (CN); Keguang Yao, Shenzhen (CN); Xin Wang, Shenzhen (CN); Jianming Bai, Shenzhen (CN); and Gangping Peng, Beijing (CN)
Assigned to General Hydrogen Corp., Ltd., Shenzhen (CN); and China Huadian Engineering Co., Ltd., Beijing (CN)
Filed by General Hydrogen Corp., Ltd., Shenzhen (CN); and China Huadian Engineering Co., Ltd., Beijing (CN)
Filed on Nov. 28, 2024, as Appl. No. 18/963,619.
Claims priority of application No. 202410643655.4 (CN), filed on May 23, 2024.
Prior Publication US 2025/0116595 A1, Apr. 10, 2025
Int. Cl. G01N 17/00 (2006.01)
CPC G01N 17/002 (2013.01) 7 Claims
OG exemplary drawing
 
1. A system for testing durability of a gas diffusion layer (GDL), comprising:
a clamping component;
a liquid storage tank; and
a peristaltic pump;
wherein the clamping component is configured to fix the GDL, a middle of the clamping component is provided with a flow channel, and both ends of the clamping component are channel-free;
the liquid storage tank is configured to store a corrosive liquid;
the peristaltic pump is arranged between the clamping component and the liquid storage tank; and the peristaltic pump is connected to the clamping component via a first pipeline, and is connected to the liquid storage tank via a second pipeline;
the peristaltic pump is configured to be turned on to pump the corrosive liquid from the liquid storage tank into the clamping component during testing, so as to perform erosion-corrosion on the GDL;
the clamping component comprises a plurality of clamping plates arranged in parallel;
the GDL is located between two adjacent clamping plates among the plurality of clamping plates; each of the plurality of clamping plates is provided with a water inlet and a water outlet; the water inlet is connected to the first pipeline, and the water outlet is connected to a third pipeline connected to the liquid storage tank; and the water inlet and the water outlet are configured such that the corrosive liquid enters the flow channel through the water inlet to perform the erosion-corrosion on the GDL, and flows back to the liquid storage tank through the water outlet;
the plurality of clamping plates comprise two end plates with one flow-channel side surface and at least one middle plate with two flow-channel side surfaces;
the at least one middle plate is located between the flow-channel side surfaces of the two end plates;
the GDL is configured to be tested for physical and chemical parameters, wherein the physical and chemical parameters comprise planar conductivity, machine-direction (MD) stiffness and weight loss rate; and
an end of the water inlet is connected to a float-type flowmeter and a pulse valve in sequence, and the pulse valve is connected to the peristaltic pump.