Vapor Grown Carbon Fiber (VGCF-H) Powder as Conductive Electrode Additive, 10 g/bottle, CCEAVGCFHP

Vapor Grown Carbon Fiber (VGCF-H) is a highly graphitized, one-dimensional (1D) conductive additive used in a variety of electrochemical applications. It is synthesized through chemical vapor deposition (CVD) and is prized for its ability to form network-like "bridges" that connect active material particles over long distances. The key features of VGCF-H are: (1) Long-Distance Conductive Paths: While carbon black (Super P) provides "point-to-point" contact at short ranges, the fibrous structure of VGCF (up to 20 µm in length) creates long-range electrical highways. This is especially critical in thick electrodes where electrons must travel further to reach the current collector. (2) Mechanical Reinforcement: It acts as a structural anchor. During the expansion and contraction of active materials (e.g., in Silicon-rich anodes), VGCF fibers maintain electrical contact where brittle spherical additives might fail. (3) Electrolyte Absorption & Wicking: The hollow microstructure of VGCF allows it to absorb and hold liquid electrolyte. This facilitates faster ion transport and improves performance during high-rate (C-rate) discharge and low-temperature operation. 

(1) In battery applications, VGCF-H is normally used in both cathodes (NMC, LFP) and anodes to improve current distribution. It is often paired with Super P in a hybrid conductive network for optimal performance.

(2) In electrolyzer and fuel cell application, VGCF-H is incorporated into the Microporous Layer (MPL) or catalyst layers to manage water and gas transport. It creates larger pore volumes, which helps reduce water flooding at the cathode.

(3) In supercapacitor system, VGCF-H is added to aerogel or porous carbon electrodes to reduce internal resistance and increase power density through synergistic effects with pseudocapacitive materials like polypyrrole.

Notes: Please try to store the VGCF-H powder in a dry place (glovebox is the best option). 

References: 

1. S. Yoshihara, et al. Designing current collector/composite electrode interfacial structure of organic radical battery, J. Power Sources, 2011, 196, 7806-7811.
2. N. Lee, et al. Rationally Designed Solution-Processible Conductive Carbon Additive Coating for Sulfide-based All-Solid-State Batteries, ACS Appl. Mater. Interfaces 2023, 15, 29, 34931–34940.