MIT News AI By Steve Nadis | Department of Nuclear Science and Engineering

Solving the solvent problem

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By focusing on electrolytes, MIT scientists are making sodium-metal batteries a more practical energy storage option.

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arXiv AI
Sep 12

A Density-Matrix Framework for Electronic-Structure Analysis of Electrolytes for Lithium Batteries

The paper introduces EMolStudio, a density‑matrix‑centered AI platform that predicts and analyzes electronic structure for electrolyte molecules in lithium batteries. It integrates molecular functionalization, explicit Li⁺ first‑shell assembly, density‑matrix prediction, and electronic‑structure parsing, enabling systematic study of 163,655 functionalized molecules and 22,500 first‑shell clusters across four lithium salts. The analysis reveals that functional groups and anion identity distinctly influence frontier orbital energies, electrostatic potential, and Li⁺‑donor contacts, with LiTDI anchoring the highest occupied orbital on the anion.

By Mingkang Liu, Huize Yu, Lei Shen
arXiv Machine Learning
Sep 14

Accelerating battery research with an interoperable interface between FINALES and Kadi4Mat

The paper presents a methodological framework that links the FINALES experiment orchestration system with the Kadi4Mat research data management ecosystem to create interoperable, automated workflows for battery research. By coordinating experiment planning, execution, data handling, and analysis across distributed sites, the framework enables reproducible, end‑to‑end experimental pipelines. The authors demonstrate its utility by studying sodium‑ion coin cell formation, using a Gaussian process model to map formation parameters to electrochemical performance and identify promising experimental regions.

By Giovanna Tosato (Karlsruhe Institute of Technology), Leon Merker (Karlsruhe Institute of Technology, Helmholtz Institute Ulm, Technical University of Munich), Monika Vogler (Technical University of Munich), Michael Selzer (Karlsruhe Institute of Technology), Arnd Koeppe (Karlsruhe Institute of Technology)
arXiv Machine Learning
Sep 3

Prototype-guided transfer of sparse literature knowledge for electrolyte additive discovery

ProtoMI is a literature‑driven framework that learns structural priors from 126 reported boron‑containing electrolyte additives and applies them to screen 179,977 unlabeled candidates. Using graph contrastive learning, it identifies seven interpretable prototypes and adapts them through semi‑supervised contrastive learning, achieving enrichment factors of 9.2–45.6 while evaluating less than 2% of the candidate space. The method led to the discovery of four commercially accessible additives, including TNDB, which improves high‑temperature LiFePO4||graphite cycling by 34.93% and forms protective interphases that suppress solvent decomposition and Fe deposition.

By Weixiang Hong, Hongting Du, Jiayue Tang, Ruifeng Tan, Yangjian Quan, Jia Li, Jiaqiang Huang