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Why Lithium-ion Batteries?

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As Hybrid Electric Vehicles (HEVs), Plug-in Hybrid Electric Vehicles (PHEV), and Electric Vehicles (EV), also designated as xEV’s, continue to gain acceptance as a viable alternative to gasoline-powered vehicles, it is clear that they will need light, compact, high-powered, high-capacity batteries to power their needs. Lithium-ion batteries provide the most attractive solution to these requirements.

Unique Features of LG Chem/LGCPI Lithium-Ion Polymer Cells

Safety Cost Performance
LG Chem’s unique safety-reinforced separator (SRS) having higher mechanical strength has been developed to minimize potential thermal runaways due to internal short. SRS demonstrates superior robustness and functionality at higher temperatures. LG Chem’s unique fabrication technology and packaging design ensures a low cost, high quality and reliable cell that is easy to scale-up. LG Chem is experienced in the design and production of multiple state-of-the-art Li ion chemistries. For the xEVs, LG Chem has developed customized cathode and anode chemistries that optimize performance and cost without sacrificing battery life.

Lithium is the future

Based on current and future xEV launches, it is clear that a large-scale switch from NiMH to Li ion batteries has already begun. Why? Because NiMH has limitations in meeting the power, energy and life demands of many applications. Also, lithium-ion batteries are providing equivalent energy for longer periods of time at a smaller size and half the weight of NiMH. Lithium-ion batteries also are less harmful to the environment than NiMH batteries. Most of the industry is expected to switch to this battery technology within the next 10 years.

LG Chem Ltd., LGCPI’s parent company, is a leader in the development and production of Li ion batteries for cell phones, laptops, tablets and other portable equipment. The transfer of technology from these smaller batteries to mid and large-size lithium-ion batteries for xEV applications is a natural one for LG Chem and it is taking place at a rapid pace.

Battery Cells

LG Chem first manufactured lithium-ion batteries in 1998. By establishing a robust mass production system, LG Chem is able to supply cells to major international companies.

With increased investments and leading-edge technology, LG Chem has now become one of the world’s global leaders for xEV battery development and manufacturing.

LG Chem’s lithium-ion cells provide several advantages over the competition, including:

Improved abuse-tolerance

  • Safety Reinforced Separator
  • Appropriate Choice of Chemistries
  • Safer Packaging

Better thermal performance (thin, flat package)

Higher reliability (fewer parts, simpler manufacturing)

Improved Total Cost (packaging, chemistry)

  • Outstanding Performance
  • Power Density
  • Energy Density
  • Calendar and Cycle Life

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Fundamentals of Lithium-ion batteries

More Power, Less Weight and Environmentally Friendly Energy Solution

Factor Detail
Environmentally Friendly Natural progression of application
Environmentally friendly systems
Value to Customer
Weight Power Charge Design
Less weight (50%-70%) Hold 2 to 4 times more energy than NiCd or NiMH Maintain power level through entire discharge cycle, with more capacity retention capability than NiCd. Provides a memory-free battery pack. Safety-reinforced separator (SRS) and laminated packaging.
NiCd NiMH Lithium-ion Lithium-ion polymer
Operating voltage (V) 1.2 1.2 3.7 3.7
Energy density (Wh/kg) 60 80 >100 >100
High current performance Good Good OK Good
Cycle life (deep discharge) <500 <300 >500 >1000
Quick charge (hr) 1 1.5-3 <1.5 <1.5
Self discharge (% per month) 5 15-30 <5 <5
Advantage Low cost Higher energy High energy and power density

Battery Cells

LG Chem/LGCPI first manufactured lithium-ion batteries in 1998. By establishing a robust mass production system, LG Chem/LGCPI now supplies cells to major international companies.

With increased investments and leading-edge technology, LG Chem/LGCPI has become one of the world’s principal battery manufacturers for the HEV, PHEV, and EV industries.

LG Chem/LGCPI’s lithium-ion battery cells provide several advantages over the competition, including:

Improved abuse-tolerance

  • Safety Reinforced Separator
  • “Mixed Cathode” Chemistry
  • Safer Packaging

Better thermal performance (Thin, Flat Package)

Higher reliability (Fewer parts, simpler manufacturing)

Improved Total Cost (Packaging, Chemistry)

Outstanding Performance

  • Power Density
  • Energy Density
  • Calendar and Cycle Life
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