Microwave-assisted synthesis of metal oxide/hydroxide composite electrodes for high power supercapacitors – A review

Rechargeable lithium-ion batteries (LIBs), as one of the most important electrochemical energy-storage devices, currently provide the dominant power source for a range of devices, including portable electronic devices and electric vehicles, due to their high energy and power densities. The interest in exploring new electrode materials for LIBs has been drastically increasing due to the surging demands for clean energy. However, the challenging issues essential to the development of electrode materials are their low lithium capacity, poor rate ability, and low cycling stability, which strongly limit their practical applications. Recent remarkable advances in material science and nanotechnology enable rational design of heterostructured nanomaterials with optimized composition and fine nanostructure, providing new opportunities for enhancing electrochemical performance. Here, the progress as to how to design new types of heterostructured anode materials for enhancing LIBs is reviewed, in the terms of capacity, rate ability, and cycling stability: i) carbon-nanomaterials-supported heterostructured anode materials; ii) conducting-polymer-coated electrode materials; iii) inorganic transition-metal compounds with core@shell structures; and iv) combined strategies to novel heterostructures. By applying different strategies, nanoscale heterostructured anode materials with reduced size, large surfaces area, enhanced electronic conductivity, structural stability, and fast electron and ion transport, are explored for boosting LIBs in terms of high capacity, long cycling lifespan, and high rate durability. Finally, the challenges and perspectives of future materials design for high-performance LIB anodes are considered. The strategies discussed here not only provide promising electrode materials for energy storage, but also offer opportunities in being extended for making a variety of novel heterostructured nanomaterials for practical renewable energy applications.

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Nanoscale Engineering of Heterostructured Anode Materials for Boosting Lithium-Ion Storage

Tin-based anode materials with well-designed architectures for next-generation lithium-ion batteries

Core-shell materials for advanced batteries

Two-dimensional (2D) multicomponent transition-metal oxide nanosheets are the most promising candidate in low-cost and eco-friendly energy storage/conversion applications Their surface-enhanced properties and synergic effects are fascinating, yet still underdeveloped Here, we first report the high-quality ultrathin 2D nanosheets of ZnCo2O4 synthesized on a large scale via microwave-assisted liquid-phase growth coupled with a post annealing procedure The well-defined and freestanding nanosheets exhibit a micron-sized planar area and ultrathin thickness, suggesting a high surface atom ratio with an unique surface and electronic structure, thus facilitating the charge transfer to enhance the overall performances in electrochemical reaction When used as anode materials for lithium ion batteries, the ultrathin ZnCo2O4 nanosheets exhibit a high reversible lithium storage capacity of 930–980 mA h g−1 at 200 mA g−1 current density in 200 cycles with an excellent cycling stability and good high-rate capability Even more importantly, we have extended the facile method for the formation of other analogue nanosheets including binary and ternary transition metal oxides (NiO, Co3O4, NiCo2O4, and CuCo2O4) and make a possibility in exploring more unique properties and promising commercial applications

Two-dimensional ultrathin ZnCo2O4 nanosheets: general formation and lithium storage application

Flake-by-flake ZnCo2O4 as a high capacity anode material for lithium-ion battery

Spherical nano-SnSb/MCMB/carbon core–shell composite for high stability lithium ion battery anodes

SnO2 nanorods grown on MCMB as the anode material for lithium ion battery

Amino induced high-loading atomically dispersed Co sites on N-doped hollow carbon for efficient CO2 transformation.

Post-modification of MOF to fabricate single-atom dispersed hollow nanocages catalysts for enhancing CO2 conversion

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