ANTIMONY-BASED LIQUID METAL BATTERIES
•
ANTIMONY-BASED LIQUID METAL BATTERIES
ABOUT AMBRI:
Combining technological innovation with
commercial application to store energy longer, in
a scalable way that will change the way power
grids operate
Low-cost battery comprised of a liquid calcium
alloy anode, a molten salt electrolyte and a
cathode comprised of solid particles of antimony
Ambri secured $144M in capital led by Reliance
New Energy Solar (Reliance Industries), Paulson
& Co., Bill Gates, Fortistar, Goehring &
Rozencwajg and Japan Energy Fund to accelerate
growth and build domestic manufacturing facility
• Reliance appointed JV Partner in India as part of
broader plans to invest $10B billion in Green
Energy Giga Complex
Source: https://ambri.com/
4. Charging
Batteries absorb
power from the grid
Half-reactions
(3) CaSbx Ca2+ + Sbx + 2e
(4) Ca2+ + 2e Ca
Overall charge reaction
CaSbx+ Energy → Ca + Sbx
Ambri
Batteries for clean energy
1. Charged State
Ca and Sb separated
Liquid Metal
Calcium (Ca) alloy
(negative electrode)
Ca
Sb
Ca Ca2+ Sb
CalCl₂-based
salt electrolyte
e-
Ca-
Sb
e-
Solid antimony (Sb) particles
(positive electrode)
2. Discharging
Batteries provide
power to the grid
Half-reactions
(1) Ca Ca2+ + 2e
(2) Ca2+ + Sbx + 2e ⇒ CaSbx
Ca Ca2+ Sb
3. Discharged State
Ca and Sb form an intermetallic alloy
Overall discharge reaction
Ca + Sbx CaSby + Energy
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