涂层铌酸锂，涂层NMC 811

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LiNbO3 (1 wt%) coated NMC 811 Cathode Powder, 10g, 11-15um D50, Cathode Material

Product Benefit: LiNbO3 coated NMC 811 (or NCM 811) Cathode Powder provides superior high rate capability of cathode when being used with solid state electrolyte materials. According to a 2019 paper published by the M. Stanley Whittingham lab, the coating of LiNbO3 on NMC 811 cathode not only supplied a protective surface coating but also optimized the electrochemical behavior of NMC 811 cathode material.

SKU#: PO0185

NMC 811 CAS#: 346417-97-8, LiNbO3 CAS#: 12031-63-9

Package Size: 10g

Supplier: Ampcera Inc.

Specifications (Custom made cathode materials with LiNbO3 coating can be provided by Ampcera Inc. )

LiNbO3 coating: 1 wt% of NMC 811

Appearance: Ash black color powder

Molecular Formula: LiNi0.8Co0.10Mn0.10O2 (Ni:Mn:Co = 8:1:1), NMC 811

Chemical Name or Material: Lithium Nickel Manganese Cobalt Oxide

Particle size distribution:

D10: ~ 5 µm
D50: 11 - 15 µm
D90: 35 µm

Tap density: ~ 2.2 g/cm3 (typical value 2.45 g/cm3)

BET Specific Surface Area: 0.15 - 0.35 m2/g

LiNbO3 coating thickness (TEM measurement): 5~10 nm

Chemical Composition and Impurities of NMC 811 Powder (metals only)

Elements	Unit	Specification	Typical Value
Co+Ni+Mn	wt%	57.00-59.50	58.67
Li	wt%	7.30-7.65	7.42
Fe	wt%	0.0050	0.0020
Cu	wt%	0.0050	0.0009
Ca	wt%	0.0200	0.0017
Na	wt%	0.0300	0.0129
Zn	wt%	0.0200	0.0004

Electrochemical Performance of NMC 811 powder

Coulombic Efficiency (0.1C) >86%

First Discharge Capacity (button half open cell, 4.2 - 3.0V)

at 0.1C, 178 mAh/g, First discharge efficiency: ~ 85%； at 0.5C, 172 mAh/g； at 1.0C, 165 mAh/g ；

Capacity remaining：

97% after 100 cycles； 96% after 200 cycles； 94% after 300 cycles

According to a recent study, LiNbO3-coated NMC 811 cathode displays the higher discharge capacity of 203 mAh g−1 at 0.1 C and a rate performance of 136.8 mAh g−1 at 5 C at 60 °C than NMC 811 and reported oxide electrodes.