Solving the solvent problem
By focusing on electrolytes, MIT scientists are making sodium-metal batteries a more practical energy storage option. MIT researchers are exploring sodium metal batteries as a cheaper, more abundant alternative for fast, scalable energy storage. The main challenge is sodium metal's high reactivity, but the researchers show how choosing the right electrolyte can improve stability while enabling fast cycling.
Key Takeaways
- Steve Nadis | Department of Nuclear Science and Engineering Publication Date : August 4, 2026 Press Inquiries Press Contact : Ilavenil Subbiah Email: subbiah@mit.
edu Nuclear Science and Engineering : A machine-learning-guided pipeline enables researchers to generate solvent candidate pools on demand, narrow the selections down, and experimentally test the most promising electrolyte recipes.
- That need, among other reasons, has motivated a group of researchers - based at MIT and led by Ju Li, the Carl Richard Soderberg Professor of Power Engineering in the departments of Nuclear Science and Engineering (NSE) and Materials Science and Engineering - to develop complementary energy storage solutions.
The team is looking, in particular, at sodium-metal batteries, which offer several attractive features.
- Electrolytes behaving badly An electrolyte is one of three main components of a battery, along with the negative electrode (the anode) and the positive electrode (the cathode).
The electrolyte acts like the "blood" of the battery, allowing electrically charged ions to move between the two electrodes.
- " But unfortunately, most electrolytes get involved in unwanted chemical reactions with the electrodes, which can greatly undermine battery stability.
The consequences of these "side reactions" can be severe, says Weiyin Chen, a postdoc in NSE and one of four lead authors of the Joule paper.
- This molecule is known as DMTMSA.
Stats & Key Facts
- #Sodium is about 1,000 times more abundant than lithium and, pound for pound, about one-hundredth the cost.
MIT researchers are exploring sodium metal batteries as a cheaper, more abundant alternative for fast, scalable energy storage. The main challenge is sodium metal's high reactivity, but the researchers show how choosing the right electrolyte can improve stability while enabling fast cycling. By focusing on electrolytes, MIT scientists are making sodium-metal batteries a more practical energy storage option.
Steve Nadis | Department of Nuclear Science and Engineering Publication Date : August 4, 2026 Press Inquiries Press Contact : Ilavenil Subbiah Email: subbiah@mit. edu Nuclear Science and Engineering : A machine-learning-guided pipeline enables researchers to generate solvent candidate pools on demand, narrow the selections down, and experimentally test the most promising electrolyte recipes. These scanning electron microscopy images show the morphology of sodium-metal deposits obtained from three different electrolyte candidates.
As renewable energy, electrified infrastructure, and high-power digital technologies continue to grow, there is an increasing need for energy storage systems that are low-cost, resource-abundant, and capable of fast charging and discharging. That need, among other reasons, has motivated a group of researchers - based at MIT and led by Ju Li, the Carl Richard Soderberg Professor of Power Engineering in the departments of Nuclear Science and Engineering (NSE) and Materials Science and Engineering - to develop complementary energy storage solutions. The team is looking, in particular, at sodium-metal batteries, which offer several attractive features.
For more details please read the original article at MIT News AI.
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