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E-One Moli to Introduce New High-Power Li-Ion Cell

E-Moli is addressing the cycle life of its current high-power LiMn2O4 cells with the new generation of material. Cycle characteristics of the current IMR-26700A high-power cell shown. Click to enlarge.

E-One Moli Energy Corp.(Molicel) will introduce its new generation of manganese spinel-based high-power lithium-ion batteries at the 14th International Meeting on Lithium Batteries (IMLB 2008) starting Sunday in Tianjin, China. The new generation of cell features better rate capability and cycle life, and is intended to match iron phosphate materials (LiFePO4) with longer cycle and calendar life.

The new high-power battery offers a capacity retention rate of more than 80% after 1,200 cycles and safety, even under harsh conditions. E-one Moli said it is launching the cell for use in cordless tools, electric bicycles, hybrid and plug-in hybrid electric vehicles.

E-One Moli (Molicel), based in Taiwan, currently manufactures and markets a variety of cylindrical and prismatic lithium-ion cells for the portable market, using four different cathode materials:

  • Lithium cobalt dioxide, LiCoO2 (energy cell). 3.7 V.
  • Lithium manganese oxide, LiMn2O4 spinel (power cell). 3.8V.
  • NMC,composed of LiNi, Mn, Co, and O2 (high-rate cell). 3.8V.
  • Lithium iron phosphate, LiFePO4 (high-rate cell). 3.2V.

The largest of E-Moli’s current generation of manganese spinel cells—the IMR-26700A—has a nominal capacity of 2900 mAh, with a volumetric energy density of 285 Wh/L and a gravimetric density of 110 Wh/kg. Maximum discharge is 20A, maximum charge is 3.7A.


Henry Gibson

Again, the latest greatest lithium battery will have about the same energy density as the more than ten year old ZEBRA battery. Perhaps MES-DEA will make a high power ZEBRA version, but they would be better off just developing or buying a flywheel system for high power peaks. EFFPOWER has a lead-acid bipolar product that might be good for high power in conjunction with a ZEBRA or any other battery system. Most cars could be made into cheap more efficient hybrid with simple flywheel storage systems. ..HG..

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