High Performance Battery Materials

Cathodes, Anodes, and Electrolytes

Cathode Materials for Lithium-ion Batteries

Cathode materials are the main component of Li-ion batteries; they determine the energy density of a cell through cell voltage and / or capacity. Lithium ion batteries are typically based on intercalation / deintercallation compounds, where lithium ions provided by the cathode are inserted into the host lattice (anode) during charge and extracted during discharge, with a minimal structural change in the host material. The choice of cathode material with a particular chemistry depends on various factors, including cell voltage, capacity, energy and power capabilities, cycle life, and temperature of operation.

NEI provides a variety of cathode materials, suitable for a wide range of applications, that are available for purchase as both powders and cast electrode tapes. We also provide customized cathode materials based on customer needs.

NANOMYTE® Cathode Powders

Our battery materials are produced through a scalable and economical solid state synthesis process, which is adaptable to different materials compositions and particle morphologies. In addition to supplying the standard cathode compositions listed below, we can custom produce any lithium battery material composition of your choice, as well as oxide, sulfide, and carbon-coated cathode materials.

LMO Cathode Powders

Lithium Manganese Oxide (LMO) Powders

Lithium Manganate (LiMn2O4) is a cathode material with a spinel structure, which allows the material to be discharged at high rates. LMO-based batteries are most suited for use in high rate applications.

NEI provides two LMO materials: NANOMYTE® BE-30 and BE-35.

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NCA Cathode Powders

Lithium Nickel Cobalt Aluminum Oxide (NCA) Powders

Lithium nickel cobalt aluminum oxide (LiNi0.8Co0.15Al0.05O2) is a cathode material that provides higher capacity than LiCoO2 when both are charged to 4.2 / 4.3V. NCA-based batteries are most suited for use in moderate rate applications that require high energy density.

NEI’s NCA powder is NANOMYTE® BE-45.

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LMNO Cathode Powders

Lithium Manganese Nickel Oxide (LMNO/Spinel) Powders

Lithium Manganese Nickel Oxide / Spinel (LiMn1.5Ni0.5O4) is a cathode material that can be charged at high voltage (5V). Due to the high potential, the material has a higher energy density compared to lithium cobalt oxide and lithium iron phosphate. LMNO-based batteries can be used in high energy and high rate applications.

NEI provides two LMNO powders: NANOMYTE® SP-10 is our standard Lithium Manganese Nickel Oxide (LMNO) powder, and NANOMYTE® SP-10C is our LATP-coated Lithium Manganese Nickel Oxide powder.

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Custom Cathode Powders

Custom Cathode Materials

NEI specializes in developing new compositions and particle morphologies (including nanoscale particle engineering) and has been a long trusted source for customized cathode (and anode) materials used in lithium-ion batteries.

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NANOMYTE® Cathode Electrode Sheets

NEI offers a variety of cathode electrode sheets that are suitable for a wide range of applications. Standard electrode sheets are cast on 5 inch x 10 inch (12.7 cm x 25.4 cm) sheets of aluminum foil current collectors, single-side coated with a 90% active material loading. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can be modified to accommodate different active material loadings, coating thickness, and binder type / content upon request.

"LCO" Tapes

Lithium Cobalt Oxide (LCO) Electrode Sheets

Lithium Cobalt Oxide (LiCoO2) was the first and most commercially successful form of layered transition metal oxide cathodes, and it is still used in the majority of commercial Li-ion batteries today. LCO is a very attractive cathode material because of its relatively high theoretical specific capacity of 274 mAh g−1, high theoretical volumetric capacity of 1363 mAh cm−3, low self-discharge, high discharge voltage, and good cycling performance.

NANOMYTE® BE-20E is a cast electrode tape of LCO powder. Standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast either single-sided or double-sided on 16 µm thick aluminum foil current collectors. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

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"LMO" Tapes

Lithium Manganese Oxide (LMO) Electrode Sheets

Lithium Manganese Oxide (LiMn2O4) is a cathode material with a spinel structure, which allows the material to be discharged at high rates. LMO-based batteries are most suited for use in high rate applications.

NANOMYTE® BE-30E and BE-35E are cast electrode tapes of lithium manganese oxide (LMO) powder. Both standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast either single-sided or double-sided on 16 µm thick aluminum foil current collectors. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

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"NCA" Tapes

Lithium Nickel Cobalt Aluminum Oxide (NCA) Electrode Sheets

Lithium nickel cobalt aluminum oxide (LiNi0.8Co0.15Al0.05O2) is a cathode material that provides higher capacity than LiCoO2 when both are charged to 4.2 / 4.3V. NCA-based batteries are most suited for use in moderate rate applications that require high energy density.

NANOMYTE® BE-45E is a cast electrode tape of NCA powder. Standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast either single-sided or double-sided on 16 µm thick aluminum foil current collectors. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

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"NMC" Tapes

Lithium Nickel Manganese Cobalt Oxide (NMC) Electrode Sheets

Layered Lithium Nickel Manganese Cobalt Oxide (LiNixMnyCozO2) is a widely used class of cathode material with NMC111 (LiNi1/3Mn1/3Co1/3O2, also known as NMC333) being the most common representative. However, Ni-rich NMCs (NMC811, 622, 532) are becoming more and more in focus now in current research due to their higher specific capacity and energy. Among these materials, NMC811 (LiNi0.8Mn0.1Co0.1O2) can deliver a high capacity of ∼200 mAh/g with an average discharge potential of ∼3.8 V (vs. Li+/Li), making it a promising positive electrode material for high energy density lithium-ion batteries.

NEI’S NMC electrode sheets are available in four different compositions: NANOMYTE® BE-50E (NMC111), BE-52E (NMC532), BE-54E (NMC622), and BE-56E (NMC811). Standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast either single-sided or double-sided on 16 µm thick aluminum foil current collectors. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

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"LFP" Tapes

Lithium Iron Phosphate (LFP) Electrode Sheets

Lithium Iron Phosphate (LiFePO4) is the representative material for olivine structured cathode materials. Its specific capacity (~170 mAh/g) is higher than that of the related lithium cobalt oxide (~140 mAh/g), however its energy density is slightly lower due to its low operating voltage. Because of its low-cost, low-toxicity, long-term stability, and well-defined performance, LFP-based batteries are finding a number of roles in vehicle use and backup power applications.

NANOMYTE® BE-60E is a cast electrode tape of LFP powder. Standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast either single-sided or double-sided on 16 µm thick aluminum foil current collectors. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

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Sulfur Tapes

Sublimed Sulfur Electrode Sheets

Sulfur cathodes offer a high theoretical capacity of 1,672 mAh/g in a Li-S cell, which is an order of magnitude higher than those of the transition-metal oxide cathodes. The high capacity is based on the conversion reaction of sulfur to form lithium sulfide (Li2S) by reversibly incorporating two electrons per sulfur atom. Li−S cell consists of a lithium metal anode, an organic electrolyte, and a sulfur composite cathode, which leads to a theoretical cell capacity of 1,167 mAh/g. BE-70E has a practical capacity of at least 800 mAh/g. The discharge reaction has an average cell voltage of 2.15 V, resulting in a high theoretical gravimetric energy density of 2,509 Wh/kg at the cell level.

NANOMYTE® BE-70E is a cast electrode tape of Sublimed Sulfur powder. Standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast either single-sided or double-sided on 16 µm thick aluminum foil current collectors. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

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"LMNO" Tapes

Lithium Manganese Nickel Oxide (LMNO/Spinel) Electrode Sheets

Lithium Manganese Nickel Oxide / Spinel (LiMn1.5Ni0.5O4) is a cathode material that can be charged at high voltage (5V). Due to the high potential, the material has a higher energy density compared to lithium cobalt oxide and lithium iron phosphate. LMNO-based batteries can be used in high energy and high rate applications.

NANOMYTE® SP-10E is a cast electrode tape of Lithium Manganese Nickel Oxide (LMNO) powder, and NANOMYTE® SP-10CE is a cast electrode tape of our LATP-coated Lithium Manganese Nickel Oxide powder.  Both standard electrode sheets are 5 inches x 10 inches (127 mm x 254 mm) and cast either single-sided or double-sided on 16 µm thick aluminum foil current collectors. NEI also offers custom tailored solutions for customers with unique specification requirements. Our tapes can also be customized to accommodate different active material loadings, coating thickness, binder type (aqueous/non-aqueous), and binder content, as well as choice of current collector.

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