1. Overview
Nanodiamond (ND) is an emerging advanced carbon material that demonstrates tremendous application potential in the battery industry through its unique physical and chemical properties. Rather than serving as a primary active material it functions as a critical functional additive interface modifier or composite structural component addressing core challenges in conventional batteries such as dendrite formation thermal runaway and limited cycle life.
2. Technical Specifications
| Parameter |
Typical Value |
| Average Particle Size |
4 - 10 nm |
| Purity |
≥ 98.0% |
| Specific Surface Area (BET) |
200 - 400 m²/g |
| Thermal Conductivity |
2000 - 2500 W/m·K |
| Nucleation Sites Density |
Up to 10¹² cm⁻² |
| Appearance |
Gray / white powder |
3. Key Features
Dendrite Suppression: Provides abundant nucleation sites (up to 10¹² cm⁻²) for uniform metal deposition and dense plating layers.
Ultra-High Thermal Conductivity: 2000-2500 W/m·K (5× copper 10× aluminum) enables efficient heat dissipation and thermal management.
Surface Functionalization Ready: Easily modified for dispersion in various electrolytes and composite systems.
Synergistic Composite Performance: Prevents graphene restacking and enhances charge transfer kinetics in composite electrodes.
4. Applications
Dendrite Suppression in Metal Anodes
Lithium zinc and other metal anodes offer high theoretical capacity but suffer from dendrite formation during charge discharge which can pierce separators and cause short circuits. Nanodiamond effectively suppresses dendrites through two mechanisms:
Electrolyte Additive: Surface-modified nanodiamond particles dispersed in electrolyte provide preferential adsorption sites for Li⁺/Zn²⁺ ions due to low diffusion barriers. This promotes uniform nucleation and dense deposition rather than disordered dendrite growth.
Artificial Interface Layer: A multifunctional nanodiamond coating applied directly on the metal anode surface offers ultra-high surface energy and abundant nucleation sites (up to 10¹² cm⁻²) to homogenize ion flux and electric field distribution fundamentally suppressing dendrite initiation and growth while reducing parasitic reactions between metal and electrolyte.
Supercapacitor Performance Enhancement
Conventional graphene electrodes suffer from restacking poor stability and narrow operating voltage windows. Nanodiamond composites offer a solution:
3D Composite Aerogels: Nanodiamond anchored between reduced graphene oxide (rGO) sheets via chemical bonding forms 3D superelastic aerogels. Nanodiamond prevents graphene restacking while graphene prevents nanodiamond agglomeration creating efficient dual-conductive pathways.
Laser-Induced Composite Electrodes: In situ integration of nanodiamond into graphene frameworks via laser technology enhances charge transport kinetics and electrochemical activity through optimized carbon structure engineering. Thermal Management for Power Batteries
High-power charge discharge scenarios cause rapid heat accumulation in power batteries risking thermal runaway. Nanodiamond serves as an efficient thermal management material:
Diamond Heat Sinks: Leveraging its ultra-high thermal conductivity (2000-2500 W/m·K 5× copper 10× aluminum) nanodiamond can be fabricated into heat sink components integrated into battery modules. These rapidly conduct and evenly distribute heat generated by cells effectively controlling battery temperature preventing localized overheating reducing thermal runaway risk extending cycle life and supporting higher-efficiency fast charging.
About Us
TRUNNANO is a leading supplier of high-performance battery materials for lithium-ion and sodium-ion batteries. Our portfolio includes nano cathodes, silicon-carbon anodes, hard carbon, and specialty additives. With strict quality control and consistent purity, we deliver reliable solutions for 3C electronics, power tools, and energy storage systems. Committed to innovation, TRUNNANO drives the future of energy storage with cutting-edge materials and dedicated customer support.
5. Packaging
Available in 10 g to 1 kg options with double-sealed moisture-proof liners. Custom sizes and inert gas purging are available upon request.
6. Frequently Asked Questions (FAQ)
Q1: Is nanodiamond a conductive material?
A1: Nanodiamond itself is not highly conductive due to its sp³ carbon structure. However its surface can be functionalized or graphitized to tune conductivity. In battery applications it is typically used in combination with conductive carbons (e.g. graphene carbon nanotubes) to build conductive networks while leveraging its unique nucleation and thermal properties.
Q2: What is the recommended dosage for electrolyte additive?
A2: Typical recommended dosage ranges from 0.1 - 2.0 wt% depending on the electrolyte system and specific battery chemistry. We recommend optimization through systematic testing for your specific application.
Q3: How should nanodiamond be dispersed in electrolyte?
A3: Surface-modified nanodiamond with appropriate functional groups (e.g. -OH -COOH) is recommended. Dispersion typically requires ultrasonication in suitable solvents followed by mixing with electrolyte. Please contact us for dispersion protocols tailored to your system.
Q4: What is the difference between nanodiamond and other carbon additives like carbon black or graphene?
A4: Unlike carbon black and graphene which primarily serve as conductive additives nanodiamond offers unique multifunctional benefits including ultra-high thermal conductivity abundant nucleation sites for dendrite suppression and surface functionalization capability. It is often used synergistically with other carbons rather than as a replacement.
Q5: Can nanodiamond be used in solid-state batteries?
A5: Yes nanodiamond shows promise in solid-state battery applications as both a composite electrolyte additive and an interfacial modification layer. Its high surface energy and nucleation sites are particularly beneficial for solid-state systems.
