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1. Li 8 ZrO 6 as a Pre-lithiation Additive for Lithium-Ion Batteries

   https://doi.org/10.1021/acsaem.2c02980  

   Kim, Minog ; Spindler, Brian D. ; Dong, Lifeng ; Stein, Andreas ( November 2022 , ACS Applied Energy Materials)
2. Li 2 Mg 2 Si 2 S 6 and Li 2 Mg 2 Ge 2 S 6 : Two nonlinear optical sulfides featuring a unique, polar trigonal structure incorporating ethane‐like anions

   https://doi.org/10.1002/zaac.202200071  

   Barton, Ari T. ; Liang, Mingli ; Craig, Andrew J. ; Zhang, Weiguo ; Stoyko, Stanislav S. ; Radzanowski, Anne N. ; Fingerlow, Delenn ; Halasyamani, P. Shiv ; MacNeil, Joseph H. ; Aitken, Jennifer A. ( May 2022 , Zeitschrift für anorganische und allgemeine Chemie)

   The new compounds Li₂Mg₂Si₂S₆and Li₂Mg₂Ge₂S₆have been prepared via traditional high‐temperature, solid‐state synthesis. The title compounds crystallize in the polar, noncentrosymmetric, trigonal space groupP31m(No. 157) and adopt a new structure type featuring staggered, ethane‐like (T₂S₆)⁶⁻units, where T=Si or Ge. These (T₂S₆)⁶⁻units are nestled within the holes of magnesium‐sulfide “layers” that are created through the edge‐sharing of MgS₆octahedra. The holes found in the lithium‐sulfide “layers”, created by LiS₆edge‐sharing octahedra, remain vacant, containing no (T₂S₆)⁶⁻anionic group. Through the face sharing of the respective MgS₆and LiS₆octahedra, the magnesium‐sulfide and lithium‐sulfide “layers” are stitched together resulting in an overall three‐dimensional structure. The optical bandgaps of Li₂Mg₂Si₂S₆and Li₂Mg₂Ge₂S₆are 3.24 and 3.18 eV, respectively, as estimated from optical diffuse reflectance UV‐Vis‐NIR spectroscopy. The compounds exhibit second harmonic generation responses of ∼0.24×KDP and ∼2.92×α‐quartz for Li₂Mg₂Si₂S₆and ∼0.17×KDP and ∼2.08×α‐quartz for Li₂Mg₂Ge₂S₆, using a Nd:YAG laser at 1.064 μm. Electronic structure calculations were performed using density functional theory and the linearized augmented plane‐wave approach within the WIEN2k software package. Examination of the electronic band structures shows that these compounds are indirect bandgap semiconductors.

    

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3. Pressure-induced phase and chemical transformations of lithium peroxide (Li 2 O 2 )

   https://doi.org/10.1063/1.4961453  

   Dunuwille, Mihindra ; Kim, Minseob ; Yoo, Choong-Shik ( August 2016 , The Journal of Chemical Physics)
4. Rechargeable Li/Cl 2 Battery Down to −80 °C

   https://doi.org/10.1002/adma.202307192  

   Liang, Peng ; Zhu, Guanzhou ; Huang, Cheng‐Liang ; Li, Yuan‐Yao ; Sun, Hao ; Yuan, Bin ; Wu, Shu‐Chi ; Li, Jiachen ; Wang, Feifei ; Hwang, Bing‐Joe ; et al ( December 2023 , Advanced Materials)

   Low temperature rechargeable batteries are important to life in cold climates, polar/deep‐sea expeditions, and space explorations. Here, this work reports 3.5–4 V rechargeable lithium/chlorine (Li/Cl₂) batteries operating down to −80 °C, employing Li metal negative electrode, a novel carbon dioxide (CO₂) activated porous carbon (KJCO₂) as the positive electrode, and a high ionic conductivity (≈5–20 mS cm⁻¹from −80 °C to room‐temperature) electrolyte comprised of aluminum chloride (AlCl₃), lithium chloride (LiCl), and lithium bis(fluorosulfonyl)imide (LiFSI) in low‐melting‐point (−104.5 °C) thionyl chloride (SOCl₂). Between room‐temperature and −80 °C, the Li/Cl₂battery delivers up to ≈29 100–4500 mAh g⁻¹first discharge capacity (based on carbon mass) and a 1200–5000 mAh g⁻¹reversible capacity over up to 130 charge–discharge cycles. Mass spectrometry and X‐ray photoelectron spectroscopy probe Cl₂trapped in the porous carbon upon LiCl electro‐oxidation during charging. At −80 °C, Cl₂/SCl₂/S₂Cl₂generated by electro‐oxidation in the charging step are trapped in porous KJCO₂carbon, allowing for reversible reduction to afford a high discharge voltage plateau near ≈4 V with up to ≈1000 mAh g⁻¹capacity for SCl₂/S₂Cl₂reduction and up to ≈4000 mAh g⁻¹capacity at ≈3.1 V plateau for Cl₂reduction.

    

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5. Anion Photoelectron Imaging Spectroscopy of C 6 HF 5 – , C 6 F 6 – , and the Absence of C 6 H 2 F 4 –

   https://doi.org/10.1021/acs.jpca.3c04016  

   McGee, Conor J. ; McGinnis, Kristen Rose ; Jarrold, Caroline Chick ( October 2023 , The Journal of Physical Chemistry A)