Sodium Ion Battery VS Lithium ion Battery

2024-06-12 18:17:25 Deligreen 1154

Sodium ion battery is a hot topic nowdays.

There are many types of batteries such as Lifepo4, NMC, lead acid battery ,solid state battery and so on.

What are the differences/ advantages of sodium ion battery?

1)Na+raw material cost 50% lower

2)sodium salt conductivity is about 20% higher than lithium electrolyte

3)Zero risk of over discharge:

it is allowed for sodium ion batteries to discharge to zero volts

4)High energy density above 120wh/KG

Why sodium ion battery is safer?

1)lower current during short curcuit and less heat since the inner resistance is high

2)Na+ are more stable in aqueous solutions,

3)high activity ,can avoid battery short circuit self ignition

4)no fire no explosion

5)Sodium ion battery can be over discharged till 0V

Among different types of batteries, Deligreen made a comparison as follows:

Item	Sodium ion Battery	NMC Battery	LFP	Lead Acid Battery
Energy density	120-200wh/kg	200-300wh/kg	150-220wh/kg	20-70wh/kg
Cycle life	3000-5000	1500-2000	3000-6000	500-1000
-20°C capacity retention rate	above 88%	70%	<70%	<60%
Low temperature performance	-40	-30	-30	-20
Environmental characteristics	Best	Middle	Best	Severe pollution
Over charge over discharge	can be overdischarged to 0V	not allowed	not allowed	Not allowed
Fast charge performance	Fast charging 80% in 10min	charge 80% in 30min	charge 80% in 40min	NO
Safety	High/no fire,no explosion	Low/Easy catch fire/explode	Middle/hard to catch fire or explode	High/no fire,no explosion
Resource richness	High	Low	Low	High
Future price reduction space	High	Low	Low	Low
Application	E-tool/home appliance,communication base, energy storage,low speed EV	EV	EV	two-wheel EV,starter,communication base