ACE Environmental Technology

Air control Engineering Co., Ltd.

Lithium ion battery recycling

With the growth of the electric vehicle (EV) industry and rising global demand for rare metals, there is an increasing need for recycling processes that recover rare metals from used lithium-ion batteries. This trend has spurred expanded development and investment in these technologies. As an environmental technology company, we have a deep understanding of the recycling process for used lithium-ion batteries and possess advanced technology for effectively treating various hazardous chemicals and gases generated during this process. We are the only company in the country with expertise in the independent design, manufacturing, overseas installation, and operational data (OP DATA) of hazardous gas treatment systems.

Lithium ion Battery Recycling

Battery Composition and Contaminants

Battery Composition

Effects of various components of lithium-ion batteries on the environment and human beings

Material Types Substances Chemical Properties Impacts
Cathode Material LiCoO2, LiMnO4, LiFePO4 등 Reacts with acids and bases, producing heavy metals Heavy metal contamination, acid rain
Anode Material Graphite, etc. Produces CO and particulate matter (DUST, FUME) during combustion Air pollution from fine dust
Electrolyte Solute LiPF6, LiBF4, LiCIO4, etc. Reacts with water or generates strong corrosive/toxic gases upon exposure Skin disorders, respiratory damage
Electrolyte Solvent EC, EMC, DMC, PC, etc. Generates VOCs and produces CO when burned Air pollution from odors
Other metals PVDF Produces HF when thermally decomposed or reacts with strong acids, alkalis, and alkali metals Skin and respiratory irritation

Treatment Flow

LIB HEETS

  1. 1 Organic compounds and VOCs are first thermally oxidized at high temperatures. The high-temperature energy released is then recycled through heat exchange or steam generation to save energy.
  2. 2 The thermally oxidized gases pass through a packing zone with KOH or NaOH for aqueous treatment. Remaining particulate contaminants (dust and fume) are then treated using a wet electrostatic precipitator.
  3. 3 Strongly acidic fluorine-based gases (F2, HF, BF3, CIF3) are neutralized with KOH solution in a scrubber for final treatment.

LIB Treatment Process Flowchart

Battery Analysis

Material Name/th> CAS No. Concentration(%) Application(%) Chemical Formula Structural Formula Melting Point Molecular Weight
Nor. Max.
Positive Electrode (Active Material) Cobalt compound 1307-96-6 4-50 27 50 CoO 1935℃ 74.9
Binder Styrene-Butadiene-Rubber 27288-99-9 <1 0.5 0.9 (C8H8·C4H6·C4H2O3)x - -
Binder Polyvinylidene Fluoride (PVDF) 24937-79-9 <5 3 4.9 (C2H2F2)x 154~184℃ 64.03
Positive(Conductive Material) Aluminum Foil 7429-90-5 2-10 6 10 Al 660℃ 26.98
Negative(Conductive Material) Copper Foil 7440-50-8 2-10 6 10 Cu 1059℃ 63.55
Negative Electrode(Active Material) Carbon 7440-44-0 10-30 20 30 C - 12.01
Organic Electrolyte(solvent) Electrolyte (Ethylene carbonate) 96-49-1 10-20 15 20 C3H4O3 36℃ 88.06
Organic Electrolyte(salt) Lithium hexafluorophosphate 21324-40-3 <5 3 4.9 LiPF6 200℃ 151.91
Stainless steel, Nickel and inert materials steel 7439-89-6 remainder remainder Fe Fe 1535℃ 55.85
Nickel 7440-02-0 remainder remainder Ni Ni 1455℃ 58-69
LeadNote)1 7439-92-1 remainder remainder Pb Pb 327.5℃ 207.2
BariumNote)1 7440-39-3 remainder remainder Ba Ba 725℃ 137.32
CadmiumNote)1 7440-43-9 remainder remainder Cd Cd 321℃ 112.41
ChromiumNote)1 7440-47-3 remainder remainder Cr Cr 1900℃ 52.00
ManganeseNote)1 7439-96-5 remainder remainder Mn Mn 1244℃ 54.94
ZincNote)1 7440-66-6 remainder remainder Zn Zn 419℃ 65.38
AntimonyNote)1 7440-36-0 remainder remainder Sb Sb 660℃ 121.76

Construction Cases(P&ID)

Construction Cases(LAY OUT)

Construction Cases(HEETS LAY OUT)

Construction Case(Photos)

Construction Case(Case 2)