SiSe for Superior Sulfide Solid Electrolytes and Li-Ion Batteries.

Among the various existing layered compounds, silicon diselenide (SiSe) possesses diverse chemical and physical properties, owing to its large interlayer spacing and interesting atomic arrangements. Despite the unique properties of layered SiSe, it has not yet been used in energy applications. Herein, we introduce the synthesis of layered SiSe through a facile solid-state synthetic route and demonstrate its versatility as a sulfide solid electrolyte (SE) additive for all-solid-state batteries (ASSBs) and as an anode material for Li-ion batteries (LIBs).

Li-Compound Anodes: A Classification for High-Performance Li-Ion Battery Anodes.

Four main anode types are generally considered as typical anodes for Li-ion batteries (LIBs): Li-metal, carbon-based, alloy-based, and oxide-based anodes. Although they exhibit satisfactory electrochemical performance as LIB anodes, they cannot simultaneously satisfy all key requirements for LIB anodes: high reversible capacity, high initial Coulombic efficiency (ICE), long cycle life, fast rate capability, structural stability, and no safety concerns. Here, we suggest Li-compound anodes as a promising class of high-performance LIB anodes.

Self-Healing Graphene-Templated Platinum-Nickel Oxide Heterostructures for Overall Water Splitting.

Electrocatalysts with dramatically enhanced water splitting efficiency, derived from controlled structures, phase transitions, functional activation, , have been developed recently. Herein, we report an observation of graphene-based self-healing, in which this functional activation is induced by a redox reaction. Specifically, graphene on stainless steel (SUS) switches between graphene (C-C) and graphene oxide (C-O) coordination via an electrical redox reaction to activate water splitting.

Zinc Phosphides as Outstanding Sodium-Ion Battery Anodes.

To design a high-performance sodium-ion battery anode, binary zinc phosphides (ZnP and ZnP) were synthesized by a facile solid-state heat treatment process, and their Na storage characteristics were evaluated. The Na reactivity of ZnP was better than that of ZnP. Therefore, a C-modified ZnP-based composite (ZnP-C) was fabricated to achieve better electrochemical performance.

Emergency management training in Korea: combining and balancing supply- and demand-centered paradigms.

This article aims to encourage NEMA (or newly named as MPSS) to combine its supply-centered paradigm with a newly proposed "demand-centered paradigm" in the Korean field of emergency management training (EMT). Based on qualitative content analysis, this paper defined the current field of EMT to be a supply-centered paradigm via three components: locations, courses, and participants. This paradigm focuses on EMT provision as supplied and dictated by the national government.