Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion

Abstract

Mixed metal sulfides (MMSs) have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), hybrid supercapacitors (HSCs), metal–air batteries (MABs), and water splitting. Compared with monometal sulfides, MMSs exhibit greatly enhanced electrochemical performance, which is largely originated from their higher electronic conductivity and richer redox reactions. In this review, recent progresses in the rational design and synthesis of diverse MMS‐based micro/nanostructures with controlled morphologies, sizes, and compositions for LIBs, SIBs, HSCs, MABs, and water splitting are summarized. In particular, nanostructuring, synthesis of nanocomposites with carbonaceous materials and fabrication of 3D MMS‐based electrodes are demonstrated to be three effective approaches for improving the electrochemical performance of MMS‐based electrode materials. Furthermore, some potential challenges as well as prospects are discussed to further advance the development of MMS‐based electrode materials for next‐generation electrochemical energy storage and conversion systems.

Defect‐Rich Heterogeneous MoS2/NiS2 Nanosheets Electrocatalysts for Efficient Overall Water Splitting

“…[5,6] Among these potential candidates, transition metal sulfides (TMSs), such as MoS 2 , CoS 2 , and NiS 2 , have drawn extensive attention, due to their considerable electrocatalytic performances. [9,10] Element doping would be an effective method to improve the catalytic activities, such as doping Ni atoms in MoS 2 . [9,10] Element doping would be an effective method to improve the catalytic activities, such as doping Ni atoms in MoS 2 .…”

Modulierung der elektronischen Strukturen anorganischer Nanomaterialien für eine effiziente elektrokatalytische Wasserspaltung

“…Diese erzeugten Fe 4+ -Zentren mit optimiertem e g -Orbital-Füllzustand (t 2g 3 e g 1 )e ntsprechen der Erwartung des SH-Prinzips,mit abnehmender Tafel-Steigung von 77 auf 48 mV dev À1 und ansteigender spezifischer Aktivitätv on 0.061 auf 0.364 mA cm À2 .D erweil hat man festgestellt, dass die Oberflächen-Sauerstoff-Leerstellen von LaFeO 3 auch zur Umordnung der elektronischen Struktur beitragen. [50] Um die e g -Struktur zu modifizieren, haben Xie und Mitarbeiter durch Yb-Dotierung und Wasserstoffreduktion Sauerstoff-Leerstellen in Ca 0.9 Yb 0.1 MnO 3Àd eingeführt. [44][45][46]48,49] Darüber hinaus schlugen Yang et al einen geometrischen Effekt vor,umdie Rolle der Sauerstoff-Leerstellen in Ca 2 Mn 2 O 5 bei OER zu erklären.…”

Synergistical Coupling Interconnected ZnS/SnS2 Nanoboxes with Polypyrrole‐Derived N/S Dual‐Doped Carbon for Boosting High‐Performance Sodium Storage

“…However, the low electric conductivity and huge volume variation of the continuous sodiation/desodiation could lead to severe pulverization and aggregation with unstable structure, leading to inferior rate capability and poor cycle performance . To address these issues, combining binary metal chalcogenides with hierarchical nanostructure has explored into a newly developing strategy . It is well known that constructing a heterogeneous composite can improve the electric conductivity and charge transfer induced by the internal electric field .…”