Lithium-ion battery

How it is used

Often shortened to Li-ion. In grid storage the main chemistry today is lithium iron phosphate (LFP), valued for safety and long life. Engineers talk about cell chemistry, cycle life, degradation, thermal runaway and fire safety.

Example sentences

1. The project uses lithium-ion batteries with LFP cells for better fire safety.

2. A lithium-ion battery slowly loses capacity with every charge cycle.

Common collocations

• lithium-ion cells
• LFP chemistry
• cycle life
• battery degradation
• thermal runaway

Related terms

• battery storageStoring electricity in large rechargeable batteries so it can be released later, for example during the evening peak or when the grid needs fast support.
• state of chargeHow full a battery is at a given moment, shown as a percentage of its usable capacity, from 0 percent (empty) to 100 percent (full).
• round-trip efficiencyThe share of the energy put into a storage system that can be taken out again after losses in charging, storing and discharging, shown as a percentage.
• energy storageTechnologies that capture energy when it is available and release it later when it is needed, such as batteries, pumped hydro and thermal storage.

More terms: Energy Storage

• pumped hydro storage