High-entropy solvent design enabling a universal electrolyte with a low freezing point for low-temperature aqueous batteries
Huimin Ji, Chunlin Xie, Tingqing Wu, Hao Wang, Hao Wang, Zhiwen Cai, Qi Zhang, Wenbin Li, Liang Fu, Huanhuan Li, Haiyan Wang, Haiyan Wang
Abstract
Amide additives acting as hydrogen-bonding ligands effectively break the cross-linking structures between water molecules and increase the entropy of mixed solvents, thus enabling a mixed solvent with an ultralow freezing point of -98 °C. Zinc-ion batteries using this hybrid solvent exhibit good cycling stability over a wide temperature range from -60 °C to 50 °C.
Topics & Concepts
ElectrolyteAqueous solutionSolventFreezing pointEntropy (arrow of time)ChemistryIonMoleculeThermodynamicsMaterials scienceChemical engineeringInorganic chemistryChemical physicsPhysical chemistryOrganic chemistryElectrodePhysicsEngineeringAdvanced battery technologies researchAdvanced Battery Materials and TechnologiesAdvancements in Battery Materials