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Rationally Designed Hierarchical TiO2@Fe2O3 Hollow Nanostructures for Improved Lithium Ion Storage

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TLDR
In this paper, an atomic layer deposition (ALD) and sacrificial template-assisted hydrolysis were used to construct a hierarchical hollow TiO2@Fe2O3 nanostructures for the application of lithium ion battery.
Abstract
Hollow and hierarchical nanostructures have received wide attention in new-generation, high-performance, lithium ion battery (LIB) applications. Both TiO2 and Fe2O3 are under current investigation because of their high structural stability (TiO2) and high capacity (Fe2O3), and their low cost. Here, we demonstrate a simple strategy for the fabrication of hierarchical hollow TiO2@Fe2O3 nanostructures for the application as LIB anodes. Using atomic layer deposition (ALD) and sacrificial template-assisted hydrolysis, the resulting nanostructure combines a large surface area with a hollow interior and robust structure. As a result, such rationally designed LIB anodes exhibit a high reversible capacity (initial value 840 mAh g−1), improved cycle stability (530 mAh g−1 after 200 cycles at the current density of 200 mA g−1), as well as outstanding rate capability. This ALD-assisted fabrication strategy can be extended to other hierarchical hollow metal oxide nanostructures for favorable applications in electrochemical and optoelectronic devices.

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Facile synthesis and lithium storage performance of SnO2–Co3O4 core–shell nanoneedle arrays on copper foil

TL;DR: In this paper, one-dimensional nanocomposite arrays on copper foils are used for the anode of a lithium ion battery, achieving a reversible capacity of ∼985 mAh−h−g −1 after 20 cycles.
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Emerging Organic Surface Chemistry for Si Anodes in Lithium‐Ion Batteries: Advances, Prospects, and Beyond

TL;DR: In this paper , the authors discuss the ongoing efforts in tailoring Si particle surfaces to minimize the cycle-induced changes to the integral structure of particles or electrodes, highlighting the versatility and tunability of surface organic chemistry.
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Morphology controlled synthesis of hierarchical structured Fe2O3 from natural ilmenite and its high performance for dyes adsorption

TL;DR: In this article, a facile method using acid leachate of ilmenite as the precursor has been successfully developed to tailor the structure of Fe2O3 microspheres by varying the synthetic parameters.
Journal ArticleDOI

Facile synthesis of CoFe2O4 quantum dots/N-doped graphene composite with enhanced lithium-storage performance

TL;DR: In this paper, the CoFe2O4 quantum dots/N-doped graphene composites were successfully fabricated through a facile strategy involving a hydrothermal process and subsequent calcination at high temperature.
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Improving the cycle stability of FeCl3-graphite intercalation compounds by polar Fe2O3 trapping in lithium-ion batteries

TL;DR: In this article, a flake-like Fe2O3 species with inherently polar surface on the edge of FeCl3-intercalated GICs was introduced through microwave-assisted transformation of a fraction of the component.
References
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Journal ArticleDOI

Issues and challenges facing rechargeable lithium batteries

TL;DR: A brief historical review of the development of lithium-based rechargeable batteries is presented, ongoing research strategies are highlighted, and the challenges that remain regarding the synthesis, characterization, electrochemical performance and safety of these systems are discussed.
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Building better batteries

TL;DR: Researchers must find a sustainable way of providing the power their modern lifestyles demand to ensure the continued existence of clean energy sources.
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Electrical Energy Storage for the Grid: A Battery of Choices

TL;DR: The battery systems reviewed here include sodium-sulfur batteries that are commercially available for grid applications, redox-flow batteries that offer low cost, and lithium-ion batteries whose development for commercial electronics and electric vehicles is being applied to grid storage.
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Nanostructured materials for advanced energy conversion and storage devices

TL;DR: This review describes some recent developments in the discovery of nanoelectrolytes and nanoeLECTrodes for lithium batteries, fuel cells and supercapacitors and the advantages and disadvantages of the nanoscale in materials design for such devices.
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Nano-sized transition-metal oxides as negative-electrode materials for lithium-ion batteries

TL;DR: It is reported that electrodes made of nanoparticles of transition-metal oxides (MO), where M is Co, Ni, Cu or Fe, demonstrate electrochemical capacities of 700 mA h g-1, with 100% capacity retention for up to 100 cycles and high recharging rates.
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