Special spunlace reinforced preoxidized felt electrode material for energy storage all-vanadium batteries
Product Description
Changshu Yongdeli Spunlaced Non-woven Fabric Co., Ltd. has just developed a spunlace reinforced pre-oxidized fiber felt electrode material. By deeply integrating cutting-edge fiber processing technology with innovative laminated spunlace processes, we bring you electrode solutions that offer performance leaps and cost reductions, fully unleashing the surging potential of vanadium batteries! Core advantage: A dual disruption in performance and cost.
Energy efficiency leaps, benefits visible!
By using our company's products and undergoing post-processing by downstream companies, the electrode surface is endowed with rich oxygen-containing functional groups (oxygen atom content 5-30%) and an optimized pore structure (specific surface area 5-150 m²/g). This not only significantly enhances the electrocatalytic activity of the electrode for the REDOX reaction of vanadium ions, but also significantly reduces electrochemical polarization. The actual measured data is astonishing
✅ At a high current of 350 milliamperes, the cell energy efficiency is as high as 96%, the voltage efficiency is as high as 87%, and the energy efficiency exceeds 85%. Higher energy efficiency means less energy loss, which is directly converted into real money for the operation of power stations!
Cost reduction by 30%, return on investment soars!
We innovatively overcome the brittleness problem of pre-oxidized fibers through a precise and special spunlace process, achieving uniform fiber dispersion and high-strength and high-toughness felt forming.
✅ The original needle-punched electrode material was replaced with spunlace reinforced preoxidized felt electrode material. The weight and thickness of the same material decreased by approximately 20-30%. All performance indicators did not decrease but increased instead, reducing the volume of the reactor.
Worry-free conductivity and stronger power output!
The stable three-dimensional conductive network constructed by the special spunlace process, the low-pressure flexible water flow minimizes the fiber non-damage rate, and the high entanglement of the preoxidized fibers is conducive to enhancing the degree of graphitization. The fabric surface is smooth and clean, significantly reducing the content of dust and powder, greatly lowering the ohmic internal resistance of the electrode, and effectively alleviating ohmic polarization.
✅ Low resistance means less energy loss and more stable and powerful battery output during high-power charging and discharging!
✅ The surface finish after activation and the dense micropores and mesopores provide the necessary platform for PECVD and the necessary conditions for the elimination of ion-exchange membranes.
Technical moat: Special spunlace process
✅ Fiber control: The core adopts imported preoxidized fibers of different models to achieve the mixing of fibers of different fineness, etc. Through advanced non-destructive opening, carding, web laying and spiral spunlacing technology, the monofilaments and uniform dispersion of fibers are ensured, among which the coarser fibers serve as the framework material and the finer fibers provide dense three-dimensional channels. Drawing on the "surface-inner layer" variable density design concept, this product far exceeds the tensile strength, surface density, and uniform weight and thickness of the same needled felt. Build a three-dimensional network framework with high porosity (up to over 90%), high permeability and excellent mechanical strength to strongly resist the erosion of electrolyte and ensure a long cycle life.
✅ Revolutionary spiral low-pressure spunlace finishing: Utilizing the spiral low-pressure spunlace process. The flexible entanglement effect of the fine water needle: Ultimate surface smoothness: Reduce burrs, lower fiber damage rate, enhance the uniformity of contact between the electrode and the diaphragm, and reduce contact resistance.
✅ Fine-grained micropore regulation: Optimize pore distribution, enhance electrolyte wettability, and improve the transport efficiency of active substances.
✅ Our company adopts the high-efficiency and non-destructive opening machine independently developed by ourselves, the pneumatic cotton box for more uniform cotton feeding, the high-speed and high-yield non-destructive carding technology 3.75-meter carding machine, and the high-speed full clamping net laying machine. Significantly enhance the uniformity and structural stability of the felt: reduce weak points, and make the overall performance of the electrode more consistent and reliable.
✅ The big width reduces loss. The maximum width of our company can reach 3.2 meters.
✅ our company has independently created anti-static technology for combing. During the preoxidized fibers opening and carding process, no chemical antistatic agents were added. The series of problems caused by the addition of chemical antistatic agents in the subsequent carbonization, graphitization and activation processes no longer exist.
Comparison of Main Technical Parameters
|
Comparing dimensions |
Needle punched preoxygenation felt |
Special spunlace pre oxidized fiber felt |
|
production costs |
Lower |
Increased by 20% compared to needle punch |
|
Applicable current density |
80 milliampere per square centimeter conventional energy storage |
350mAh/cm2 high-power scenario |
|
thickness |
1-5MM |
10-30% lower than that of needle punch |
|
Weight |
120-800gsm |
40-500gsm |
|
Porosity |
70-80% |
90-99% |
|
density uniformity |
Local burrs cause fluctuations of ±15% |
The density of the leveled surface fluctuates by ±5% |
|
Density at the same thickness |
0.1-0.3 grams per square centimeter |
0.2-0.4 grams per square centimeter |
|
Fiber breakage rate |
Fibers longer than 1 centimeter account for 52% |
The proportion of fibers longer than 1 centimeter is 85% |
|
Electrolyte flushing |
The ratio is 1 |
The needling ratio of the same gram weight is 1:1.5 |
|
Thermal conductivity |
0.05W/M.K |
0.02-0.03W/M.K |
|
Chemical residue |
Chemical residue of antistatic agent |
no |
|
Ash powder 100% ethanol |
t turns black when soaked in ethanol |
No precipitation after soaking |
|
Technical parameters after processing |
|
The weight is 20-30% lower than that of needle-punched products, with the same parameters |
