Nickel Felt Sheet (T 0.1-1.0 mm, L 100mm * W 100mm) for Battery, Electrolyzer, and Fuel Cell, CBEFCNFES

Nickel felt is a high-performance, three-dimensional porous material composed of sintered pure nickel fibers.

(1) In battery applications, the nickel felt is used as a support for the active material in the negative electrode, allowing for high power density and rapid charge/discharge cycles. It can act as a lightweight, conductive current collector, particularly in experimental or high-power designs where its 3D structure helps manage volume expansion and improves ion transport. For redox flow battery, nickel felt (often modified with catalysts like NiO) is used to provide electrochemically active sites for redox reactions, significantly increasing energy efficiency and discharge capacity compared to standard graphite felts.

(2) In electrolyzer application, nickel felt acts as a Porous Transport Layer (PTL), which facilitates the transport of liquid electrolyte to the catalyst layer while allowing oxygen and hydrogen gas bubbles to escape efficiently. Due to its high specific surface area, it can be used directly as an electrode or as a substrate for advanced catalysts, reducing the overpotential required for the Oxygen Evolution Reaction (OER).

(3) In fuel cell application, the nickel felt is frequently used as an anode substrate or current collector in SOFC. When combined with ceramic materials like Yttria-Stabilized Zirconia (YSZ), it provides excellent conductivity and mechanical strength while matching the thermal expansion of other cell components. Moreover, nickel felt is also used in alkaline-type fuel cells and as a diffusion medium to improve water management and reactant distribution.