About Sodium ion battery vs lithium ion energy density
Sodium-ion batteries have a higher capacity than lithium-ion batteries, which leads to a much greater energy density by weight1. However, lithium-ion batteries boast a higher energy density than sodium-ion batteries, which means a compact lithium-ion will have a longer run time between charges2. Sodium-ion batteries have demonstrated about half the energy density of lithium, which can reach 285 Wh/kg2. Sodium-ion batteries are larger than lithium-ion batteries and have a lower energy density, which means they cannot store as much charge per unit volume3.
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6 FAQs about [Sodium ion battery vs lithium ion energy density]
Are lithium ion batteries better than sodium batteries?
Scientists have achieved a higher-energy density in sodium-ion batteries than in lithium-ion batteries. However, lithium-ion batteries have a higher energy density, which helps cars travel farther, and currently hold the No. 1 spot among rechargeable batteries. Sodium-ion batteries may prioritize longevity or stability over energy density.
Are lithium ion batteries more energy dense?
In sodium-ion batteries, researchers from the Tokyo University of Science have achieved a higher energy density than in lithium-ion batteries.
Could sodium be competing with low-cost lithium-ion batteries?
Sodium could be competing with low-cost lithium-ion batteries —these lithium iron phosphate batteries figure into a growing fraction of EV sales. Take a tour of some other non-lithium-based batteries: Iron-based batteries could be a cheap way to store energy on the grid and assuage concerns about safety.
What are the advantages and disadvantages of sodium ion batteries?
Other advantages of sodium-ion batteries include high power, fast charging, and low-temperature operation . But there are also downsides to sodium-ion batteries, the top one being a lower energy density than their lithium-ion counterparts.
Will sodium ion batteries replace lithium-ion?
It’s unlikely that sodium-ion batteries will completely replace lithium-ion batteries. Instead, they are expected to complement them. Sodium-ion batteries could take over in niches where their specific advantages—such as lower cost, enhanced safety, and better environmental credentials—are more critical.
What is the energy density of sodium ion batteries?
Sodium ion gravimetric energy density is currently around 130 Wh/kg to 160 Wh/kg, but is expected to top 200 Wh/kg in future, above the theoretical limit for LFP devices. In power density terms, however, sodium ion batteries could have 1 kW/kg, higher than nickel-manganese-cobalt’s (NMC) 340W/kg to 420 W/kg and LFP’s 175 W/kg to 425 W/kg.
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