NANOMYTE® Cathode & Anode 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 and anode compositions listed below, we can custom produce any lithium battery material composition of your choice – oxide, sulfide, and carbon coated. NEI’s cathode & anode materials are available as both powders and cast electrode tapes.
Anode Materials for Lithium-ion Batteries
Anode Materials are the negative electrode in lithium-ion batteries and are paired with cathode materials in a lithium-ion cell. The anode materials in lithium-ion cells act as the host where they reversibly allow lithium-ion intercalation / deintercallation during charge / discharge cycles. General criteria for selection of suitable intercalation-based anode materials include (i) low first cycle irreversible loss, (ii) high coulombic efficiency, (iii) fast lithium-ion diffusion into and out of the anode, (iv) high ionic and electronic conductivity, (v) minimum structural changes upon charge and discharge, (vi) high specific capacity (mAh/g), and (vii) the ability to form and maintain a stable SEI (Solid Electrolyte Interface) layer upon cycling. In addition to standard anode materials, NEI can also provide customized anode materials based on the customer’s needs.
Lithium titanate (Li4Ti5O12) is an electrode material with exceptional electrochemical stability, often used as the anode in lithium-ion batteries for applications that require high rate, long cycle life, and high efficiency. LTO-based batteries are considered safer and have a wider operating temperature range.
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 that are suitable for a wide range of applications. We also provide customized cathode materials based on customer needs.
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.
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.
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’s NANOMYTE® SP-10 is produced by a novel process that leads to exceptional cycling stability.
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.
Cathode Materials for Sodium-ion Batteries
Just as is the case with lithium-ion batteries, cathode materials are a key component of Sodium-ion batteries. The composition of the cathode material determines the cell voltage and capacity, and thereby the energy density. Sodium-ion cathode materials are typically based on intercalation / de-intercalation compounds, where sodium ions provided by the cathode are inserted into the host lattice (anode) during charge and extracted during discharge, with minimal structural change in the host material.
In contrast to lithium, sodium is one of the most abundant elements in the earth’s crust. Consequently, Na-ion batteries have attracted much attention over the past few years. 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.