NCM-811 Lithium-Ion Secondary Battery Cathode Material 

Introduction

NMC811 is a lithium-ion battery cathode material with the chemical formula LiNiMnCoO2. This chemical composition indicates that the cathode material contains nickel (Ni), manganese (Mn), cobalt (Co), and lithium (Li). The numerical part "811" represents its ratio, where the proportions are in a molar ratio of 8:1:1 for Ni, Mn, and Co, respectively. This cathode material is commonly used in high-energy-density lithium-ion batteries to enhance the overall performance of the battery.

 

1. NMC-811-S (single crystal Ni83) physical and chemical indicators

Product Name	D50 μm	surface area m2/g	pH	LiOH wt%	Li2CO3 wt%	3.0-4.3V 0.1C charge capacity mAh/g	Initial Discharge Efficiency %	Features
NMC-811-S	4.0±1.0	0.6±0.2	≤11.7	≤0.30	≤0.30	210±5	89±1	High safety, high capacity, excellent circulation
Typical value	3.6	0.65	11.50	0.21	0.09	210.2	89.6

2. Coin cell performance：

1）Room temperature performance(3-4.3V)

Product	Room temperature performance (3-4.3V)
	0.1/0.1C			0.5/0.5C	0.5/1C	0.5/2C	0.5/1C
	First charge (mAh/g)	First discharge (mAh/g)	Initial efficiency (%)	3th Capacity (mAh/g)	4th Capacity (mAh/g)	5th Capacity (mAh/g)	6th Capacity (mAh/g)	55th Capacity (mAh/g)	50th Capacity retention (%)
NMC-811-S	234.5	210.2	89.6	196.7	190.5	183.5	190.2	174.5	91.7

 

2）High temperature 45℃ power-withholding performance (3-4.3V)

Product	45℃ performance (3-4.3V)
	0.1/0.1C			0.5/0.5C	0.5/1C	0.5/2C	0.5/1C
	First charge (mAh/g)	First discharge (mAh/g)	Initial efficiency (%)	3th Capacity (mAh/g)	4th Capacity (mAh/g)	5th Capacity (mAh/g)	6th Capacity (mAh/g)	55th Capacity (mAh/g)	50th Capacity retention (%)
NMC-811-S	242.2	222.2	91.7	213.8	208.1	201.6	206.3	191.9	93

 

3. Application of single crystal Ni83 full battery:

1）Battery design (pouch cell 554065 2.1Ah):

Positive NMC-811-S			Negative S360-L1
Design specific capacity （mAh/g）	Area density （g/m2）	Compaction density （g/cm3）	Design specific capacity （mAh/g）	Area density（g/m2）	Compaction density （g/cm3）	Anode excess
200	330	3.6	350	218	1.65	12%

 

Positive	active substance	SP+GNLC-05	Solef5130		Actual solid content	Viscosity/temperature
NMC-811-S	97.30%	0.5%+1.0%	1.20%		73.00%	6030/25.4
Negative	active substance	SP	Dazhalu 2200	SBR(104A)	Actual solid content	Viscosity/temperature
S360-L1	95.20%	1.50%	1.30%	2.00%	42.70%	3570/26.9

 

2）Compaction performance

pressure level(Mpa)	5	6	7	8	9	10
NMC-811-S	3.2	3.33	3.37	3.4	3.45	3.53