Musa Ali Cambaz

Helmholtz-Institut Ulm | KIT-HIU · Materials Research Area

In article number 2300982, Guruprakash Karkera, Maximilian Fichtner, and co-workers report high ionic mobility in cesium tin chloride perovskites, highlighting their application as solid electrolytes in all-solid-state batteries. The vacancy mediated ionic conduction (depicted in the cover image) is facilitated by flexible structural building block...

The high ionic conductivity and good oxidation stability of halide-based solid electrolytes evoke strong interest in this class of materials. Nonetheless, the superior oxidative stability compared to sulfides comes at the expense of limited stability toward reduction and instability against metallic lithium anodes, which hinders their practical use...

In this work, a structurally revivable, chloride‐ion conducting solid electrolyte (SE), CsSn0.9In0.067Cl3, with a high ionic conductivity of 3.45 × 10⁻⁴ S cm⁻¹ at 25 °C is investigated. The impedance spectroscopy, density functional theory, solid‐state ³⁵Cl NMR, and electron paramagnetic resonance studies collectively reveal that the high Cl⁻ ionic...

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Supporting Information

Upon cycling, Li‐rich Mn‐based disordered rocksalt (DRS) oxyfluoride cathode materials undergo unwanted degradation processes, which are triggered by chemical side reactions or irreversible oxygen redox activity, especially at high voltages and in contact with the electrolyte. A surface coating can be an effective strategy to mitigate these parasit...

Energy storage in a rechargeable chloride ion battery by tungsten oxytetrachloride cathode material. This class of material is used, as an electrode for the first time in batteries, and paves way for the employment of abundant chloride‐based materials, for energy storage applications. More details can be found in article number 2200193, Guruprakash...

Rechargeable chloride ion batteries are a new emerging battery technology that can potentially provide high theoretical volumetric capacities at lower cost and higher abundance. However, research on chloride ion batteries (CIB) is in its early stages, and the current challenge lies in finding suitable electrodes and electrolytes. Herein, tungsten o...

The Li+ transport kinetics at the solid-solid electrode|electrolyte interfaces is crucial for the stable and durable performance of solid-state batteries (SSBs). A poor interface due to mechanical problems and/or (electro-)chemical instabilities will curtail the performance of such batteries. Herein, we present a detailed study on the interfaces of...

In article number 2000279, Maximilian Fichtner, Stefano Passerini, and co‐workers demonstrate improved interfacial properties of a lithium lanthanium zirconate (LLZO) solid‐electrolyte (SE)‐based solid‐state battery by employing ionic liquid interlayers at the electrode/electrolyte junctions. This strategy lowers the interfacial resistances and sup...

Lithium-excess disordered rock-salt oxides have opened up a new vista in search of high-capacity cathodes, resulting in a variety of new materials with versatile elemental compositions. This work introduces W⁶⁺ as a possible charge-compensator and explores the solid-solution series Li1+x/100Ni1/2−x/120Ti1/2−x/120Wx/150O2 (x = 0, 5, 10, 15, 20), whi...

Li‐garnets are promising inorganic ceramic solid electrolytes for lithium metal batteries, showing good electrochemical stability with Li anode. However, their brittle and stiff nature restricts their intimate contact with both the electrodes, hence presenting high interfacial resistance to the ionic mobility. To address this issue, a strategy empl...

The present study shows the electrochemical performance of a room-temperature magnesium/sulfur (Mg/S) battery with a newly designed sulfur (3–0.5 mgsulfur cm−2) composite cathode. Operando Raman spectroscopy is employed to investigate the formation of polysulfide species at the cathode of Mg/S cells during the charge/discharge process, while densit...

Disordered rock-salt compounds are becoming increasingly important due to their potential as high-capacity positive electrode materials for lithium-ion batteries. Thereby, a significant number of studies have focused on increasing the accessible Li capacity, but studies to manipulate the electrochemical potential are limited. This work explores the...

Li2VO2F with the cation-disordered rock-salt structure is an attractive high-energy-density positive electrode material but suffers from severe capacity fading upon cycling. The underlying reasons are yet unclear. In this study, we unveil the overlooked role of vanadium dissolution and electrode-electrolyte interactions and provide insight into the...

All-solid-state batteries (ASSBs) based on inorganic solid electrolytes promise improved safety, higher energy density, longer cycle life and lower cost than conventional Li-ion batteries. However, their practical application is hampered by the high resistance arising at the solid-solid electrode-electrolyte interface. Although, the exact mechanism...

Li-rich disordered rock-salt oxides such as Li1.2Ni1/3Ti1/3Mo2/15O2 are receiving increasing attention as high-capacity cathodes due to their potential as high-energy materials with variable elemental composition. However, the first-cycle surface oxygen release aggravates the cycling performance due to cation densification and structural reconstruc...

Cation-disordered oxides have been ignored as positive electrode material for a long time, due to structurally limited lithium insertion/extraction capabilities. In this work, a case study is carried out on nickel based cation-disordered Fm-3m LiNi0.5M0.5O2 positive electrode materials. The present investigation targets tailoring the electrochemica...

In article 1600372, B. P. Vinayan and co-workers describe the design of a high capacity and excellent cycling stability sulfur cathode electrode by encapsulating elemental sulfur into the hierarchically organized micro/meso pores of a chemically modified carbon host matrix, which contains both nitrogen and oxygen functional groups. The charge/disch...

Secondary lithium batteries are considered as a fundamental device for green and sustainable energy development and are now used as power sources for EV’s. However, the demand for higher energy density LIB’s necessitates the search for new materials and new systems. Compounds with the ability to reversibly exchange more than 1 Li ⁺ per formula unit...

The physiochemical properties of the carbon host matrix and their sulfur loading play a major role in the electrochemical performance of lithium–sulfur batteries. A highly sulfur (S) loaded (75 wt%) carbon matrix (S/nitrogen rich carbon host matrix (NGC)) has been designed, with hierarchically organized micro/mesopore structures containing nitrogen...

Rechargeable magnesium (Mg) batteries are a sustainable option for electrochemical energy storage of renewable energy due to the inherent merits associated with Mg such as natural abundance, operational safety and high theoretical volumetric capacity (3,832 mAh cm ⁻³ ), with a reduction potential of − 2.356 V versus normal hydrogen electrode (NHE)....

Metal oxyfluoride compounds are gathering significant interest as cathode materials for lithium ion batteries at the moment because of their high theoretical capacity and resulting high energy density. In this regard, a new and direct approach is presented to synthesize phase-pure vanadium oxyfluoride (VO2F). The structure of VO2F was identified by...

Here we report for the first time the development of a Mg rechargeable battery using a graphene-sulfur nanocomposite as the cathode, a Mg-carbon composite as the anode and a non-nucleophilic Mg based complex in tetraglyme solvent as the electrolyte. The graphene-sulfur nanocomposites are prepared through a new pathway by the combination of thermal...

Here we report for the first time the development of a Mg rechargeable battery using a graphene–sulfur nanocomposite as the cathode, a Mg–carbon composite as the anode and a non-nucleophilic Mg based complex in tetraglyme solvent as the electrolyte. The graphene–sulfur nanocomposites are prepared through a new pathway by the combination of thermal...

Polyanionic framework compounds have attracted increasing interest since the first report of LiFePO4 as cathode material. [1] In between these polyanionic compounds the group of the borates are offering attractive features in term of high theoretical capacity. The BO 3 ³⁻ is having the lowest-weight framework and therefore having the highest theore...

Vanadium-based materials have received considerable attention for lithium ion batteries due to the facts that vanadium is the fifth most abundant transition metal in the earth’s crust, its relatively low atomic mass, its multiple oxidation states. The redox operating voltage (typically < 4.5 V) of vanadium-based materials is typically within the st...

Colloidal Au@ZnO hybrid nanocrystals with linear and branched shape were synthesized. The number of ZnO domains on the Au seeds can be controlled by the solvent mixture. Imidazole-functionalized Au@ZnO hybrid nanocrystals were soluble in water and exhibited a greatly enhanced photocatalytic activity compared to ZnO nanocrystals. The pristine hetero...