Activated Carbon Fiber-Felt

Catalog	ACFM-HP-A0004
Benzene Absorption	36.0 wt%
Sample Lot No.	A24Q2823
Specific Surface Area	≥ 1100 m2/g
Thickness	3 mm

Case Study

Supercapacitor Electrode Based on Activated Carbon Fiber Felt

Rodrigues, A. C., et al. Materials Today Communications, 2019, 21, 100553.

An activated carbon fiber (ACF) felt/iron oxide based electrode material was developed for supercapacitors. Specifically, a simple chemical plating process was used to deposit the iron chemical on the textile activated carbon fiber felt. The obtained Fe@ACF supercapacitor electrode exhibited a high specific capacitance of 237 F g^-1 at a current density of 0.2 A g^-1 and lost only 3% of its initial specific capacitance after 3000 charge-discharge cycles. The formation of γ-FeOOH on the carbon mesh may be responsible for the increase in conductivity and specific capacitance.
Preparation of Fe@ACF composite electrode
The deposition of iron species on the ACF felt was performed using an aqueous Fe(NO3)3 solution. To prepare the samples, 10 g of ACF felt was submerged in 200 mL of a solution containing 2.88 g/L Fe(NO3)3 for 24 hours at room temperature. After the adsorption process, the sample was rinsed with deionized water and subsequently dried in a vacuum oven at 50 °C. Ultimately, the Fe@ACF composite was produced for use as an electrode in a supercapacitor.

Activated Carbon Fiber Felt for Efficient Solar Evaporator

Li, Haoran, et al. ACS applied materials & interfaces, 2018, 10(11), 9362-9368.

Activated carbon fiber felt (ACF) has been investigated for efficient solar evaporation. The evaporation performance is also enhanced due to the well-developed pore structure of ACF, which can improve water supply and steam escape, and the low thermal conductivity, which can reduce the increase in bulk water temperature. ACF-based evaporators can efficiently generate steam under one-sun irradiation, with an evaporation rate and solar conversion efficiency of 1.22 kg m-2 h-1 and 79.4%, respectively. The local temperature of the ACF-based evaporator reached 48 °C.
Design of ACF-based evaporator
· Commercially available polyacrylonitrile ACF felt was shaped into discs measuring 38 mm in diameter and 3.0 mm in thickness. These discs underwent a thorough cleaning process involving acetone, ethanol, and water, each for 15 minutes, facilitated by a 500 W ultrasonic cleaner. The diameter of the ACF felt discs was intentionally made slightly smaller than the chamber's inner diameter to allow for unobstructed movement during the experiment.
· To enhance the buoyancy of the felt during evaporation, insulation foam with a diameter of 34 mm and a thickness of 18 mm was securely attached to the bottom surface. This foam also minimized heat conduction losses to the bulk water within the evaporator. Water was allowed to interact with the ACF felt solely through a 2-mm annular channel located near the inner wall, enabling it to diffuse freely and fully saturate the sample within 5 minutes.