18650 rechargeable battery lithium 3.7v 3500mah
CH
About Us
Company Profile Development History Sales Network Partner Social Responsibility
Products
Rechargeable Battery Battery Packs Energy Storage Battery Primary Battery Handicraft Article
Subsidiary Company
SINO TECHNOLOGY SUNBEAM GREEN POWER DATAPOWER SEONG-HEE STD
Honor
Qualification Certificate Patent Certificate Honor Certificate
R&D
R&D Center Test Center
News
Company News Industry News
Contact Us
Other information
product
polymer lithium battery Primary battery Rechargeable Battery LR03 alkaline battery
18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

Other information

Home  >  Other information

12V23A battery

release time:2024-05-10 Hits:     Popular:AG11 battery

  12V23A battery proton exchange membrane preparation process

  12V23A battery proton exchange membrane preparation process - the traditional method is developed on the basis of phosphate 12V23A batterys. The specific preparation process of this method is: mix the Pt/C electrocatalyst with the diluted PTFE solution (or powder) to prepare a uniformly dispersed catalyst slurry, prepare a catalytic layer on the surface of the diffusion layer by spraying, and then heat it at 80 Dry in a vacuum oven at °C to remove the organic solvent in the catalytic layer. 12V23A battery proton exchange membrane preparation process

  (1) Clean the coating clamp. Use absorbent cotton dipped in absolute ethanol to clean the clamp and gasket (see Figure 1(a)).

  (2) Install the proton exchange membrane on the fixture, place a sealing gasket on the base, see Figure 1(b); then place the proton exchange membrane, see Figure 1(c); then place a round hole sealing gasket. , see Figure 1(d).

  (3) Cover the clamp panel, see Figure 1(e); then clamp the membrane with screws, see Figure 1(f); apply the prepared catalyst slurry evenly on the membrane (the membrane will curl at this time , which is a normal phenomenon), blow dry with a hair dryer, see Figure 1(g).

  (4) Remove the membrane from the fixture, invert it, and repeat the catalyst coating step.

  Preparation method of 12V23A battery proton exchange membrane

  1. Traditional law

  The traditional method was developed on the basis of phosphate 12V23A batterys. The specific preparation process of this method is: mix the pt/C electrocatalyst with the diluted pTFE solution (or powder) to prepare a uniformly dispersed catalyst slurry, use spraying to prepare a catalytic layer on the surface of the diffusion layer, and then 80 Dry in a vacuum oven at °C to remove the organic solvent in the catalytic layer. Then the diluted Nafion solution is impregnated or sprayed on the surface of the catalytic layer, and dried in a vacuum oven at 80°C; finally, the electrode and the proton exchange membrane are hot-pressed to prepare the MEA.

  MEA prepared by this method uses pTFE as a hydrophobic agent, which is beneficial to gas mass transfer. The catalytic layer can be made thicker, about 30~50um. The disadvantage is that it is usually difficult for the Nafion solution to fully enter the catalytic layer and fully contact the catalyst. Generally, it can only penetrate about 10μm into the catalytic layer, making the catalyst utilization rate low, generally around 10% to 20%. Secondly, pTFE is used as a hydrophobic agent, which is not conducive to the conduction of electrons and protons; at the same time, the expansion coefficients of the catalytic layer and the proton exchange membrane are different. The proton exchange membrane shrinks and swells more seriously when it loses or absorbs water, and it is easy to interact with the catalytic layer. Separation causes the interface resistance of the electrode to increase and the electrical performance to decay seriously.

  2. Thin layer electrode method

  The Los Alamos Laboratory in the United States proposed the thin-layer electrode method, mainly to overcome the problem of expansion mismatch between the traditional electrode catalytic layer and the proton exchange membrane. The main feature of this method "is that the hydrophobic agent pTFE is not added to the catalytic layer, but the hydrophilic agent Nafion solution is used as the binder and proton conductor. The specific preparation method is: first, the diluted 5% Nafion solution and pt /C electrocatalyst is mixed, the mass ratio is about 3:1, and then water and glycerol are added to it, and the mass ratio of pt/C:H2O:glycerol is controlled at 1:5:20. After ultrasonic vibration, apply it multiple times. onto the pretreated pTFE membrane, dried at 130C, then hot-pressed the pTFE membrane with the catalytic layer and the proton exchange membrane, separated from the pTFE membrane, and transferred the catalytic layer to the proton exchange membrane. A supporting layer of carbon paper is combined with it to form a thin-layer electrode.

  3. Vacuum deposition method

  Vacuum deposition methods generally include chemical vapor deposition, physical vapor deposition and sputtering. The performance of electrodes prepared by vacuum deposition depends to a large extent on the preparation of the sputtered substrate, and different sputtering processes have little impact on the performance. The pretreatment of the substrate mainly involves the process of impregnating the porous substrate with pTFE and carbon powder. The sputtering method is used to make the catalytic layer, which has obvious effects on reducing the PT loading, improving the utilization of the catalyst and increasing the area specific power of the electrode. However, the water generated in the 12V23A battery prepared by this method is not easy to discharge, and it It is not suitable for mass production of electrodes and the cost is also high.


Read recommendations:

L822 32A/29A

Lithium Power Battery Science Research.CR2032 button cell battery

CR2032 Button Cell Battery Overview

701221 battery direct sales

NiMH No.7 battery

Last article:12V27A battery

Next article:CR2450 battery

Popular recommendation

li ion 18650 battery pack direct sales

2023-03-22

21700 battery Processing

2023-03-22

3.2v 20ah lifepo4 battery

2023-03-22

AAA Ni-MH batteries Vendor

2023-03-22

18650 battery 3.7v 2000mah

2023-03-22

R20

2023-03-27

5/AA USB 1.5V 2035mWh

2023-06-29

18650 1000mAh 3.7V

2022-08-19

Lithium Battery LQ12-200

2022-08-19

501825 180mAh 3.7V

2022-08-19

902030 500mAh 3.7V

2022-06-27

775767 3500mAh 7.4V

2022-08-19

3.2V 280Ah

2022-10-12

Alkaline AA Battery LR06

2022-11-11

702535 600mAh 3.7V

2022-06-27

CR1616 battery

2023-06-25

502030 polymer battery

2023-06-25

Nickel Metal Hydride No. 5 battery

2023-06-25

3.7V 18650 lifepo4 battery

2023-06-25

AG6 battery

2023-06-25

Do you know all these terms in the battery industry

2024-08-22

Master the three major characteristics of lithium iron phosphate battery.48v solar power energy stor

2023-03-15

What is the difference between ordinary batteries and lithium batteries?

2022-11-08

Standard for marine lithium batteries

2024-06-15

lithium 3400mah 3.7v 18650 battery.Blindly disassembling the battery causes the loss of ECU informat

2023-11-23

What is the difference between energy storage battery and power battery

2022-11-09

Seven advantages of lithium iron phosphate battery, know?energy storage battery 48v lithium ion batt

2023-03-10

What is the reason for the battery of electric vehicle not durable

2022-11-07

Introduction to semi -solid lithium batteries.household energy storage lithium battery company

2023-04-14

18650 battery 3.7v 6000mah.Key points to pay attention to when using lithium batteries

2023-10-14
360° FACTORY VR TOUR
lithium ion battery 18650 priceWhatsapp
lithium ion battery 18650 price

lithium ion battery 18650 priceTel
+86 19925278095

lithium ion battery 18650 priceEmail
admin@sino-techgroup.com

TOP