Lithium Nickel Cobalt Oxide (LiNi(1-x)CoxO2) is a layered transition-metal oxide supplied by Infinita Materials as a high-density sputtering target for thin-film lithium-ion battery cathode research and microelectronics energy storage. As a binary solid solution between LiNiO2 and LiCoO2, it offers researchers a tunable platform for studying how the nickel-to-cobalt ratio governs capacity, voltage, and structural stability in layered cathode films. Targets are produced as sintered ceramic discs engineered for stable, particulate-free RF and pulsed-DC sputtering.
Lithium Nickel Cobalt Oxide LiNi₁₋ₓCoₓO₂ crystallises in the layered α-NaFeO₂-type structure (R-3m), with Li and Ni/Co occupying alternating octahedral layers that enable reversible lithium-ion intercalation. Cobalt substitution reduces Li/Ni cation mixing, improving structural stability and cycling reversibility while retaining the high capacity associated with nickel-rich compositions. Sputtering from ceramic targets enables dense, uniform films with controlled composition and thickness, making the material suitable for thin-film energy-storage architectures. Sputtered LiNi₁₋ₓCoₓO₂ films are investigated as cathode layers in solid-state and microbattery systems, including on-chip energy storage for MEMS, RFID, wearable, and implantable electronics, where precise thickness and direct substrate integration are essential.
Answer: LiNi₁₋ₓCoxO₂ is commonly used as a target material in thin-film deposition processes, particularly for producing cathodes in lithium-ion batteries. It offers excellent electrochemical performance.
Answer: It provides high capacity and stability in lithium-ion batteries, enabling the production of high-performance thin films with good cycling efficiency and thermal stability.
Answer: During sputtering, argon ions bombard the target, causing the material to eject as a thin film onto a substrate. The substrate is then used in battery and electronic applications.
Answer: Some challenges include target oxidation, precise composition control, and potential sputtering instability due to the material's complexity in stoichiometric ratios during deposition.
Lithium Nickel Cobalt Oxide LiNi₁₋ₓCoₓO₂ crystallises in the layered α-NaFeO₂-type structure (R-3m), with Li and Ni/Co occupying alternating octahedral layers that enable reversible lithium-ion intercalation. Cobalt substitution reduces Li/Ni cation mixing, improving structural stability and cycling reversibility while retaining the high capacity associated with nickel-rich compositions. Sputtering from ceramic targets enables dense, uniform films with controlled composition and thickness, making the material suitable for thin-film energy-storage architectures. Sputtered LiNi₁₋ₓCoₓO₂ films are investigated as cathode layers in solid-state and microbattery systems, including on-chip energy storage for MEMS, RFID, wearable, and implantable electronics, where precise thickness and direct substrate integration are essential.
Key Properties of Lithium Nickel Cobalt Oxide
Property
Value
Significance
Chemical formula
LiNi(1-x)CoxO2
Binary solid solution between LiNiO2 and LiCoO2 end members; x is tuned to balance capacity against structural stability
Crystal structure
Layered rhombohedral, alpha-NaFeO2 type, space group R-3m
Alternating Li and Ni/Co octahedral layers enable two-dimensional Li-ion diffusion pathways essential to cathode function
CAS number
113066-89-0
Unique registry identifier confirmed against independent chemical supplier records for procurement and documentation
Molar mass
~97.7 g/mol (representative, x=0.2)
Nearly invariant with composition since Ni and Co atomic weights differ by under 1 per cent, simplifying stoichiometric calculations
Density (theoretical)
~4.8 – 5.0 g/cm3
Bounded by the densities of the LiNiO2 (~4.8 g/cm3) and LiCoO2 (~5.05 g/cm3) end members; sintered targets typically reach 90-95 per cent of this value
Thermal stability
>1000 C before decomposition
Layered oxide begins releasing lattice oxygen and converting to a rock-salt phase at high temperature, a key safety consideration in cell design
Supports both electron transport and Li-ion diffusion needed for cathode charge/discharge cycling
Magnetic type
Paramagnetic
Consistent with partially filled d-orbitals on the Ni3+/Co3+ transition-metal sublattice
Types & Grades of Lithium Nickel Cobalt Oxide
Lithium Nickel Cobalt Oxide targets are offered in standard catalogue sizes and grades, with custom purity, density, and geometry available for OEM and R&D deposition systems.
Grade / Form
Typical Purity
Key Features / Uses
Standard sputtering-grade disc
99.9%
Cost-effective grade for process development, tool qualification, and non-critical research depositions
High-purity grade
99.99%
Reduced transition-metal and alkali contamination for reproducible electrochemical cycling data
Ultra-high-purity grade
99.999%
Reserved for fundamental studies of intrinsic cathode behaviour where trace impurities would confound results
Bonded target on backing plate
99.9% – 99.99%
Indium- or elastomer-bonded to a copper backing plate to manage thermal stress in this brittle ceramic during high-power sputtering
Custom stoichiometry (x-value) target
99.9% – 99.99%
Ni: Co ratio produced to a specified x (commonly 0.15-0.5) to match a target voltage, capacity, or cycle-life profile
Applications of Lithium Nickel Cobalt Oxide
Sputtered films of Lithium Nickel Cobalt Oxide support demanding roles across research and production applications where this material’s specific structural, electronic, or optical properties are the key requirement.
Industry
Application
Function
Li-ion battery R&D
Thin-film cathode deposition for micro-batteries and coin-cell test structures
Cathode films for all-solid-state thin-film battery stacks
Provides a clean, low-roughness cathode interface compatible with sequential solid-electrolyte co-deposition
Semiconductor and MEMS integration
On-chip energy storage for IoT and sensor nodes
Enables a thin-film battery to be built directly onto silicon or glass alongside other on-chip components
Wearable and flexible electronics
Thin-film batteries on flexible or curved substrates
Low-temperature sputtering deposits a functional cathode layer without damaging polymer or textile substrates
Medical devices
Power sources for implantable and ingestible electronics
Delivers a compact, biocompatible-package energy source at the small form factors implantable devices require
Academic and materials research
Structure-property studies of layered oxide cathodes
Supplies reproducible, composition-controlled epitaxial or polycrystalline films for diffraction and electrochemical study
Why Partner with Infinita Materials?
Technical Depth: in-house quality control with ICP-MS and XRF purity verification, density measurement, and full certificates of analysis on every target.
Global Logistics: reliable supply from single R&D-scale targets to production-line volumes, with established international shipping.
Responsive Support: direct access to materials engineers for grade, bonding, and geometry selection, and process-compatibility questions.
Take the Next Step
Infinita Materials fabricates Lithium Nickel Cobalt Oxide sputtering targets engineered to the purity, density, and geometry your deposition process requires. Whether the requirement is a standard catalogue target or a custom size, purity, or bonded assembly, our team can help match the right specification to your deposition system. Request a quote or speak with our technical team to discuss your target specification.
Other Related Product to Lithium Nickel Cobalt Oxide, LiNi(1-x)CoxO2
LiNi₁₋ₓCoxO₂ is commonly used as a target material in thin-film deposition processes, particularly for producing cathodes in lithium-ion batteries. It offers excellent electrochemical performance.
It provides high capacity and stability in lithium-ion batteries, enabling the production of high-performance thin films with good cycling efficiency and thermal stability.
During sputtering, argon ions bombard the target, causing the material to eject as a thin film onto a substrate. The substrate is then used in battery and electronic applications.
Some challenges include target oxidation, precise composition control, and potential sputtering instability due to the material's complexity in stoichiometric ratios during deposition.
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