Journal ArticleDOI
Co3O4 Nanocages for High-Performance Anode Material in Lithium-Ion Batteries
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TLDR
In this article, the thermal decomposition of Co3O4 nanoparticles of cobalt-based Prussian blue analogues at different temperatures was used to obtain high discharge capacity of 800, 970, 828, 854, and 651 mAhg.Abstract:
Co3O4 nanoparticles have been prepared by a facile strategy, which involves the thermal decomposition of nanoparticles of cobalt-based Prussian blue analogues at different temperatures. The nanoparticles prepared at 450, 550, 650, 750, and 850 °C exhibited a high discharge capacity of 800, 970, 828, 854, and 651 mAhg–1, respectively, after 30 cycles at a current density of 50 mAg–1. The nanocages produced at 550 °C show the highest lithium storage capacity. It is found that the nanocages display nanosize grains, hollow structure, a porous shell, and large specific surface area. At the temperature higher than 650 °C, the samples with larger grains, better crystallinity, and lower specific surface area can be obtained. It is found that the size, crystallinity, and morphology of nanoparticles have different effects on electrochemical performance. Better crystallinity is able to enhance the initial discharge capacity, while porous structure can reduce the irreversible loss. Therefore, the optimal size, crysta...read more
Citations
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Journal ArticleDOI
Synthesis, Properties, and Applications of Hollow Micro-/Nanostructures
TL;DR: The unique properties and niche applications of the hollow structures in diverse fields, including micro-/nanocontainers and reactors, optical properties and applications, magnetic properties, energy storage, catalysis, biomedical applications, environmental remediation, and sensors are discussed.
Journal ArticleDOI
MOF-Templated Synthesis of Porous Co3O4 Concave Nanocubes with High Specific Surface Area and Their Gas Sensing Properties
Yinyun Lü,Wenwen Zhan,Yue He,Yiting Wang,Xiang-Jian Kong,Qin Kuang,Zhaoxiong Xie,Lan-Sun Zheng +7 more
TL;DR: Experimental results reveal that the porous Co3O4 concave nanocubes present the highest sensitivity to ethanol with fast response/recovery time (< 10 s) and a low detection limit (at least 10 ppm).
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A review of rechargeable batteries for portable electronic devices
Yeru Liang,Yeru Liang,Chen-Zi Zhao,Hong Yuan,Yuan Chen,Weicai Zhang,Jia-Qi Huang,Dingshan Yu,Yingliang Liu,Maria-Magdalena Titirici,Yu-Lun Chueh,Haijun Yu,Qiang Zhang +12 more
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Ruthenium-cobalt nanoalloys encapsulated in nitrogen-doped graphene as active electrocatalysts for producing hydrogen in alkaline media.
TL;DR: Density functional theory calculations reveal that the introduction of ruthenium atoms into cobalt core can improve the efficiency of electron transfer from alloy core to graphene shell, beneficial for enhancing carbon–hydrogen bond, thereby lowing ΔGH* of HER.
Journal ArticleDOI
Hollow Structures Based on Prussian Blue and Its Analogs for Electrochemical Energy Storage and Conversion.
Jianwei Nai,Xiong Wen David Lou +1 more
TL;DR: The research of Prussian blue and its analog (PBA) related nanomaterials has emerged and has drawn considerable attention because of their low cost, facile preparation, intrinsic open framework, and tunable composition.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
Formation of hollow nanocrystals through the nanoscale Kirkendall effect
Yadong Yin,Robert M. Rioux,Can K. Erdonmez,Steven Hughes,Gabor A. Somorjai,A. Paul Alivisatos +5 more
TL;DR: A simple extension of the process yielded platinum–cobalt oxide yolk-shell nanostructures, which may serve as nanoscale reactors in catalytic applications, and provides a general route to the synthesis of hollow nanostructureures of a large number of compounds.
Journal Article
Formation of hollow nanocrystals through the nanoscale kirkendall effect
Yadong Yin,Robert M. Rioux,Can K. Erdonmez,Steven Hughes,Gabor A. Somorjai,A. Paul Alivisatos +5 more
TL;DR: Alivisatos et al. as mentioned in this paper demonstrate that hollow nanocrystals can be synthesized through a mechanism analogous to the Kirkendall Effect, in which pores form due to the difference in diffusion rates between two components in a diffusion couple.
Journal ArticleDOI
Graphene Anchored with Co 3 O 4 Nanoparticles as Anode of Lithium Ion Batteries with Enhanced Reversible Capacity and Cyclic Performance
Zhong-Shuai Wu,Wencai Ren,Lei Wen,Libo Gao,Jinping Zhao,Zongping Chen,Guangmin Zhou,Feng Li,Hui-Ming Cheng +8 more
TL;DR: Wu, Zhong-Shuai; Ren, Wencai; Wen, Lei; Gao, Libo; Zhao, Jinping; Chen, Zongping; Zhou, Guangmin; Li, Feng; Cheng, Hui-Ming.
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