High-efficiency and high-power rechargeable lithium–sulfur dioxide batteries exploiting conventional carbonate-based electrolytes

Abstract

Shedding new light on conventional batteries sometimes inspires a chemistry adoptable for rechargeable batteries. Recently, the primary lithium-sulfur dioxide battery, which offers a high energy density and long shelf-life, is successfully renewed as a promising rechargeable system exhibiting small polarization and good reversibility. Here, we demonstrate for the first time that reversible operation of the lithium-sulfur dioxide battery is also possible by exploiting conventional carbonate-based electrolytes. Theoretical and experimental studies reveal that the sulfur dioxide electrochemistry is highly stable in carbonate-based electrolytes, enabling the reversible formation of lithium dithionite. The use of the carbonate-based electrolyte leads to a remarkable enhancement of power and reversibility; furthermore, the optimized lithium-sulfur dioxide battery with catalysts achieves outstanding cycle stability for over 450 cycles with 0.2 V polarization. This study highlights the potential promise of lithium-sulfur dioxide chemistry along with the viability of conventional carbonate-based electrolytes in metal-gas rechargeable systems.

MLSolvA: solvation free energy prediction from pairwise atomistic interactions by machine learning

“…The importance of solvation or hydration mechanisms and their accompanying free energy change has rendered in silico calculation methods for the solvation energy one of the most important applications in computational chemistry [ 3 , 7 , 12 , 13 , 15 , 16 , 18 , 19 , 21 , 23 , 33 – 37 , 39 , 40 , 43 , 44 , 50 , 52 , 54 , 57 , 58 , 65 , 67 , 71 , 73 , 79 , 81 ]. Solvation free energy directly influences numerous chemical properties in condensed phases and plays a dominant role in various chemical reactions, such as drug delivery [ 18 , 21 , 51 , 67 ], organic synthesis [ 53 ], electrochemical redox reactions [ 1 , 30 , 47 , 72 ], etc.…”

Solvation Free Energy Prediction from Pairwise Atomistic Interactions by Machine Learning

“…The importance of solvation or hydration mechanisms and their accompanying free energy change has rendered in silico calculation methods for the solvation energy one of the most important applications in computational chemistry [33,16,69,15,37,32,61,11,40,35,38,53,34,41,31,63,76,19,14,17,75,6,50,21,12,3,48,54,67,46]. Solvation free energy directly influences numerous chemical properties in condensed phases and plays a dominant role in various chemical reactions, such as drug delivery [16,63,19,47], organic synthesis [49], electrochemical redox reactions [68,43,1,28], etc.…”

Size Tunable Zeolite‐Templated Carbon as Microporous Sulfur Host for Lithium‐Sulfur Batteries

“…Three peaks corresponding to lithium sulfide (Li 2 S,159.8 eV), terminal sulfur (Li 2 S 2 , 161.5 eV), and bridging sulfur (Li 2 S x , 162.9 eV) [19] were identified in the XPS spectrum of ZTC/S-20. The very weak peaks at 165 eV [20] and 166.5 eV [21] can be attributed to RSOR and Li 2 S 2 O 4 , respectively, and may have formed as a result of side reactions between PSs and the electrolyte. For ZTC/S-100, the oxidized sulfur species observed over 165 eV disappeared and only peaks corresponding to Li 2 S were detected.…”