Batteries
Silicon Anodes
High Aspect Ratio Solution to Overcome the Limitations of Silicon Anode Materials
SWCNT from FCT GLOBAL’s Alliance Network effectively addresses one of the most critical challenges of silicon anodes in lithium-ion batteries—severe volume expansion.
With its exceptionally high aspect ratio, SWCNT from FCT GLOBAL’s Alliance Network forms a strong conductive network between active materials. This network suppresses expansion during charge–discharge cycles and significantly improves both cycle life and capacity.
Verified Performance Data: Pure Silicon Anode Test Results
The performance of SWCNT from FCT GLOBAL’s Alliance Network has been validated through rigorous testing conditions.
In a coin cell (half-cell) test using a pure silicon anode, the addition of only 2 wt% SWCNT from FCT GLOBAL’s Alliance Network relative to the active material demonstrated outstanding performance results.
- Capacity Retention: Over 92% capacity retention after more than 100 cycles at 0.5C.
- Cycle Stability: After the initial activation period, the cycling behavior gradually stabilizes, indicating the potential for long-term durability and extended battery life.
- Coulombic Efficienc: Maintains a consistently high coulombic efficiency of approximately 99.95%, demonstrating stable and highly reversible electrochemical reactions.
Secondary Particle NMC Cathode Materials for Fast Charging
Material Innovation Challenging the Refueling Speed of Internal Combustion Vehicles
FCT GLOBAL’s Alliance Network provides next-generation materials for ultra-fast charging by optimizing the secondary particle structure of ternary lithium-ion battery cathodes (NMC/NCA).
Our goal goes beyond simple performance improvement. We aim to transform the electric vehicle charging experience to approach the convenience and speed of refueling internal combustion engine vehicles.
Three Key Technology Pathways for Fast Charging
- Secondary Particle Structure Optimization(Particle Engineering)
- Optimized secondary particle design shortens the lithium-ion transport pathway and maximizes diffusion efficiency within particles.
This enables structural stability even under high-power and fast-charging conditions. - Advanced Material Integration(Material Innovation)
- The integration of highly conductive SWCNT minimizes electrical resistance and mitigates thermal deformation under high-voltage and high-current charging conditions.
- Advanced Charging Management
- By combining optimized charging algorithms and battery management systems that maximize material performance, ultra-fast charging can be achieved without compromising battery lifespan.
SWCNT Film Current Collectors Replacing Conventional Copper and Aluminum Foils
“Breaking the limits – redefining the paradigm of current collectors.”
FCT GLOBAL’s Alliance Network introduces next-generation current collector technology based on SWCNT films to overcome the limitations of conventional copper (Cu) and aluminum (Al) foils.
Beyond simply conducting electricity, this innovative solution simultaneously enhances the mechanical strength and chemical stability of batteries.
- Extraordinary Physical Reinforcement
- When SWCNT is applied as a conductive coating material for current collectors, it significantly improves the tensile strength and toughness of ultra-thin copper and aluminum foils.
Compared with conventional carbon black coating technologies, SWCNT provides a fundamentally stronger reinforcement effect. This helps prevent foil breakage during manufacturing processes and improves overall battery durability. - Enabling High-Nickel Battery Stability
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When SWCNT films are used as cathode current collectors (replacing aluminum foil), they can maximize the stability and cycle life of high-nickel lithium-ion batteries, which traditionally suffer from instability despite their high energy density.
Enhanced Stability: Minimizes structural deformation even under high-temperature and harsh operating conditions.
Extended Cycle Life: Suppresses capacity degradation during repeated charge–discharge cycles, enabling longer battery lifespan. - Safety Comparable to Solid-State Batteries
- Batteries utilizing current collector technology from FCT GLOBAL’s Alliance Network significantly reduce the risk of thermal runaway, achieving a level of safety comparable to next-generation solid-state batteries.
This breakthrough establishes a new benchmark for safety—one of the most critical factors in the electric vehicle and energy storage system (ESS) markets.
The Vital Role of SWCNT in All-Solid-State Batteries
As a critical conductive additive for next-generation all-solid-state batteries, SWCNT addresses the inherent challenges of low ionic conductivity and high interface resistance. It is an essential material for maximizing both energy density and cycle life.
- By forming a seamless conductive network that connects solid electrolytes and active materials within the cathode and anode, SWCNT facilitates highly efficient electron transport.
- Even at minimal loading levels, SWCNT significantly boosts conductivity, effectively mitigates the volumetric expansion of silicon anodes, and enhances both battery longevity and charging speeds.
- By reducing the interfacial contact resistance, a weakness of solid electrolytes, SWCNTs enable high energy densities (up to 500 Wh/kg).
