ChemInform Abstract: Lithium/Molybdenum Oxysulfide Secondary Batteries.

Abstract

The molybdenum oxysulfides (V) and (VI) are prepared according to the scheme and their chemical reactivity with Li is tested using BuLi.

Understanding the redox shuttle stability of 3,5-di-tert-butyl-1,2-dimethoxybenzene for overcharge protection of lithium-ion batteries

“…Looking through the timeline and corresponding literatures, one can easily find out that more and more organic structures have been employed in the design of the redox shuttles, e.g. from inorganic halogen redox couples [9][10][11] to organometallics ferrocene derivatives [3,[12][13][14][15], and then to conjugated organic compounds [16][17][18][19][20][21]. However, with a few exceptions, most of the reported redox shuttles cannot meet the requirements for practical battery applications due to either the low redox potentials of the redox shuttles or the poor stability of the oxidized shuttle molecules, which are two major obstacles for finding successful redox shuttle additives.…”

Metal Oxysulfides: From Bulk Compounds to Nanomaterials

“…Abraham, Pasquariello et al synthesized various MoO y S z amorphous compounds from the thermal decomposition of ammonium dithiomolybdate (NH 4 ) 2 MoO 2 S 2 (Abraham et al, 1989;Pasquariello et al, 1990 and (NH 4 ) 2 MoS 4 also led to a solid precursor whose thermal decomposition yielded MoO y S z . Based on the electrochemical properties of these amorphous compounds, the authors suggested different structures for them, with different O/S ratios and involving both S 2 2− and S 2− anions (Abraham and Pasquariello, 1993).…”

“…We already mentioned that titanium (Meunier et al, 1989;Lindic et al, 2005a;Dubois et al, 2017) or tungsten (Martin et al, 1999;Martin-Litas et al, 2001 thin films were studied as cathodes in solid-state lithium-ion batteries. As cathodes, molybdenum oxysulfide thin films were also developed (Abraham et al, 1989;Pasquariello et al, 1990;Gonbeau et al, 1991;Abraham and Pasquariello, 1993;Levasseur et al, 1995;Schmidt et al, 1995a;Yufit et al, 2003;Golodnitsky et al, 2006a,b) More recently, a TiO 2 @MoO y S z composite was investigated as anode material (Qiao et al, 2013). The external layer of molybdenum oxysulfide was supposed to enhance the conductivity of the hybrid material.…”