Surface oxygen vacancy regulation strategy enhances the electrochemical catalytic activity of CoFeO cathode for solid oxide fuel cells.

Oxygen vacancies are crucial for enhancing oxygen ion transport in solid-state materials. Therefore, an approach was established to efficiently adjust the surface oxygen vacancy concentration in the solid oxide fuel cell (SOFC) cathodes. This method employs NaBH solution to capture lattice oxygen on the cathode surface, enabling precise control over both the surface oxygen vacancy concentration and the transition metal ion valence states in spinel CoFeO (CFO) by modulating the NaBH treatment duration.

Synergistically engineered in-situ self-assembled heterostructure composite nanofiber cathode with superior oxygen reduction reaction catalysis for solid oxide fuel cells.

The engineering and exploration of cathode materials to achieve superior oxygen reduction catalytic activity and resistance to CO are crucial for enhancing the performance of solid oxide fuel cells (SOFCs). Herein, a novel heterostructure composite nanofiber cathode comprised of PrBaSrCoO and CePrO (PBSC-CPO-ES) was prepared for the first time through a synergistic approach involving in-situ self-assembly and electrostatic spinning techniques. PBSC-CPO-ES exhibits exceptionally high oxygen reduction catalytic activity and CO resistance, which is attributed to its unique nanofiber microstructure and abundant presence of heterointerfaces, significantly accelerating the charge transfer process, surface exchange and bulk diffusion of oxygen.

Ti in-situ intercalation and interlayer modification via titanium foil/vanadium ion solution interface of VO as sulfur-wrapped matrix enabling long-life lithium sulfur battery.

Lithium sulfur battery (LSB) has great potential as a promising next-generation energy storage system owing to ultra-high theoretical specific capacity and energy density. However, the polysulfide shuttle effect and slow redox kinetics are recognized the most stumbling blocks on the way of commercializing LSB. On this account, for the first time, we use Ti in-situ intercalation strategy via titanium foil/vanadium ion (V) solution interface to modify the layer of vanadium oxide for long cycle LSB.

In situ self-assembled NdBaSrCoO/GdCeO hetero-interfaces enable enhanced electrochemical activity and CO durability for solid oxide fuel cells.

The development of solid oxide fuel cells (SOFCs) faces impediments in terms of challenges associated with oxygen reduction activity and CO durability. Therefore, a series of novel composite cathode materials, consisting of NdBaSrCoO (NBSC) and GdCeO (GDC), were designed and synthesized using a one-pot strategy through a self-assembly process. The incorporation of GDC leads to a significant increase in the number of active sites.

A review on nickel-rich nickel-cobalt-manganese ternary cathode materials LiNiCoMnO for lithium-ion batteries: performance enhancement by modification.

The new energy era has put forward higher requirements for lithium-ion batteries, and the cathode material plays a major role in the determination of electrochemical performance. Due to the advantages of low cost, environmental friendliness, and reversible capacity, high-nickel ternary materials are considered to be one of ideal candidates for power batteries now and in the future. At present, the main design idea of ternary materials is to fully consider the structural stability and safety performance of batteries while maintaining high energy density.

Gradient Mn-La-Pt Catalysts with Three-layered Structure for Li-O battery.

Gradient Mn-La-Pt catalysts with three-layered structure of manganese dioxide (MnO), lanthanum oxide (LaO), and Platinum (Pt) for Li-O battery are prepared in this study. The mass ratio of the catalysts is respectively 5:2:3, 4:2:4, and 3:2:5 (MnO: LaO: Pt) which is start from the side of the electrolyte. The relationship between morphology structure and electrochemical performance of gradient catalyst is investigated by energy dispersive spectrometry and constant current charge/discharge test.

Thermally Reduced Graphene Oxide Electrochemically Activated by Bis-Spiro Quaternary Alkyl Ammonium for Capacitors.

Thermally reduced graphene oxide (RGO) electrochemically activated by a quaternary alkyl ammonium-based organic electrolytes/activated carbon (AC) electrode asymmetric capacitor is proposed. The electrochemical activation process includes adsorption of anions into the pores of AC in the positive electrode and the interlayer intercalation of cations into RGO in the negative electrode under high potential (4.0 V).