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Hard Carbon Anode Material

Hard carbon is a dual-functional anode material derived from biomass and resin, utilizing innovative refining technology for biomass-based resin precursors and advanced preparation processes to produce hard carbon suitable for both lithium-ion and sodium-ion batteries.

Hard Carbon Anode Material

Introduction

Hard carbon is a hard carbon anode material with dual characteristics of biomass and resin. It uses unique biomass refining technology and advanced preparation processes to obtain bio-based resin precursors, and then prepares hard carbon suitable for lithium-ion batteries and sodium-ion batteries. Carbon anode material. Product features: Wide source of precursors, high consistency, in line with the concept of carbon neutrality; High compaction density; High performance; Black powder, uniform color, no agglomerations and no impurities.

Hard Carbon Anode Material

Specification

 

Index Unit SQNHC-001 SQNHC-002 SQNHC-003
Average Particle Size Dv50 Um 4-7 4-7 4-7
Specific Surface Area SSA M2/g ≤5 ≤5 ≤5
Ash % ≤0.5 ≤0.3 ≤0.1
Vibration Density G/cm3 0.93±0.2 0.93±0.2 0.93±0.2
Compacted Density G/cm3 1.05±0.05 1.05±0.05 1.05±0.05
Specific Volume (Above 0V) MAh/g 290±5 320±5 350±5
First Coulombic Efficiency % ≥91 ≥92 ≥92

 

 

Testing Items Unit Model Batch Test Results
Dv(10) Dv(50) Dv(90) Dv(100)
Granularity μm SQ-NHC001 N23202008A-1 3.637.01 7.01 12.1 18.7

 

 

Features

High consistency of the precursor: using biomass as raw material, using unique refining technology and resinization process, a hard carbon precursor with dual characteristics of biomass and resin is obtained;
High compacted density: 5-10% higher than conventional biomass hard carbon;
High cost performance: the precursor has a high carbon yield (above 40%);
There is a lot of room for performance improvement: the precursor can be molecularly designed and modified.

 

Half Cell Test Recommendations

Slurry ratio: 96 (hard carbon): 1.5 (CMC): 1.5 (SBR): 1 (SP);
Mixing process: 300rpm-10min; 400rpm-20min; 600rpm-30min;
Drying: 90℃ 30-40min;
Surface loading capacity: 12mm diameter disc, about 3-3.5mg of active substance;
Electrolyte: 1.5M NaPF6 in EC/DEC/EMC=1/2/2(V);
Diaphragm: fiberglass (GF/A);
Charging and discharging: leave the battery for 8 hours;
Discharge CC (30mA/g, constant current discharge to 0V at about 0.1C) - CV (0V - constant voltage discharge to 0.01mA), let stand for 10 minutes;
Charging CC (30mA/g about 0.1C - constant current charging to 1.5V/2.5V).

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