A5050586102- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Inorganic Chemistry and Materials
- Supercapacitor Materials and Fabrication
- Thermal Expansion and Ionic Conductivity
- Advanced battery technologies research
Sapienza University of Rome
2023
Hard carbons (HC) from natural biowaste have been investigated as anodes for sodium-ion batteries in electrolytes based on 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide ([EMI][FSI]) and N-trimethyl-N-butylammonium ([N1114][FSI]) ionic liquids. The Na+ intercalation process has analyzed by cyclic voltammetry tests, performed at different scan rates hundreds of cycles, combination with impedance spectroscopy measurements to decouple bulk interfacial resistances the cells. diffusion...
Lithium–oxygen aprotic batteries (aLOBs) are highly promising next-generation secondary due to their high theoretical energy density. However, the practical implementation of these is hindered by parasitic reactions that negatively impact reversibility and cycle life. One challenges lies in oxidation Li2O2, which requires large overpotentials if not catalyzed. To address this issue, redox mediators (RMs) have been proposed reduce oxygen evolution reaction (OER) overpotentials. In study, we...
Abstract Sodium metal batteries (SMBs) are innovative and promising energy storage systems. SMBs a competitive technological paradigm compared to the state‐of‐the‐art lithium‐ion thanks high specific capacity of sodium metal, i. e., 1166 mAh g −1 , Na + /Na 0 low redox potential −2.71 V vs. standard hydrogen electrode. Unstable solid electrolyte interface (SEI), uncontrolled overpotentials dendrite growth main drawbacks that hinder development SMBs. Herein, we propose functionalized silica...
We present a computational study on the redox reactions of small clusters Li superoxide and peroxide in presence halogen/halide mediators. The is based DFT calculations with double hybrid functional an implicit solvent model. It shows that iodine less effective than bromine oxidation Li2O2 to oxygen. On basis our thermodynamic data, solvents low dielectric constant, does not spontaneously promote either or release singlet oxygen, while could trigger both events. When large constant used,...