Journal
JOURNAL OF POWER SOURCES
Volume 514, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2021.230578
Keywords
Liquid metal battery; Energy storage; Self-healing electrode; High energy density; Cost-effective
Funding
- National Key Research and Develop-ment Program of China [2018YFB0905600]
- National Natural Science Foundation of China [U1766216, 51774148, 51861135315, 51804128]
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The study explores a liquid metal battery using liquid lithium and solid antimony as main materials, providing high energy density and low cost energy storage at high temperatures. With the self-healing characteristic of the pure antimony electrode, no capacity fading is observed during cycles.
As expected, a desired electrochemical energy storage system can simultaneously combine the low-cost raw materials with ultra-high energy density and no performance degradation characteristics. Here, we use liquid lithium as the anode, solid antimony as the cathode, molten LiF-LiCl-LiBr (or molten LiF-LiCl) as the electrolyte and test the battery at 550 degrees C. It can provide the energy density as high as 421.6 Wh kg(-1), while the energy storage cost is only 42.4 $ kWh(-1). More importantly, due to the self-healing characteristic of the pure antimony electrode, no capacity fading is observed during 470 cycles. Therefore, with all the merits, the Li parallel to Sb liquid metal battery has become a competitive choice in the field of grid-level energy storage.
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