Journal ArticleDOI
Oxygen defective metal oxides for energy conversion and storage
TLDR
In this article, the authors present an overview of progress made in preparing oxygen defective metal oxide nanostructures and probing the role of oxygen vacancies on the performance of metal oxides.About:
This article is published in Nano Today.The article was published on 2017-04-01. It has received 242 citations till now. The article focuses on the topics: Oxide & Water splitting.read more
Citations
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Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond
TL;DR: The physicochemical characteristics of spinels such as their compositions, structures, morphologies, defects, and substrates have been rationally regulated through various approaches and can yield spinels with improved ORR/OER catalytic activities, which can further accelerate the speed, prolong the life, and narrow the polarization of fuel cells, metal-air batteries, and water splitting devices.
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Suppressing Manganese Dissolution in Potassium Manganate with Rich Oxygen Defects Engaged High-Energy-Density and Durable Aqueous Zinc-Ion Battery
Guozhao Fang,Chuyu Zhu,Minghui Chen,Jiang Zhou,Boya Tang,Xinxin Cao,Xusheng Zheng,Anqiang Pan,Shuquan Liang +8 more
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Crystal facet engineering of photoelectrodes for photoelectrochemical water splitting
TL;DR: This article summarizes the major challenges and some invigorating perspectives for future research on crystal facet engineered photoelectrodes, which are believed to play a vital role in promoting the development of this important research field.
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High Mass Loading MnO2 with Hierarchical Nanostructures for Supercapacitors.
TL;DR: A morphology and phase-controlled electrodeposition of MnO2 with ultrahigh mass loading of 10 mg cm-2 on a carbon cloth substrate is performed to achieve high overall capacitance without sacrificing the electrochemical performance.
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Defect engineering in earth-abundant electrocatalysts for CO2 and N2 reduction
TL;DR: In this article, the type, regulation strategy, fine defect characterization methods, and their application in the electrocatalytic CO2 reduction reaction (CRR) and N 2 reduction reaction(NRR) are discussed and summarized, and major challenges, opportunities, and future development direction of defect engineering in CRR and NRR catalysts are proposed.
References
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Journal ArticleDOI
LiCl/PVA Gel Electrolyte Stabilizes Vanadium Oxide Nanowire Electrodes for Pseudocapacitors
TL;DR: It is demonstrated that vanadium oxide nanowire pseudocapacitors with gel electrolyte exhibit excellent capacitance retention rates of more than 85% after cycling for 5000 cycles, without sacrificing the electrochemical performance of vanadium oxides.
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A New Benchmark Capacitance for Supercapacitor Anodes by Mixed-Valence Sulfur-Doped V6O13−x
Teng Zhai,Teng Zhai,Xihong Lu,Yichuan Ling,Minghao Yu,Gongming Wang,Tianyu Liu,Chaolun Liang,Yexiang Tong,Yat Li +9 more
TL;DR: A new pseudocapacitor anode, sulfur-doped V6O(13-x), is reported, which achieves a benchmark capacitance of 1353 F/g (0.72 F/cm(2)) at a current density of 1.9 A/g in 5 M LiCl solution.
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Sulfur Cathodes with Hydrogen Reduced Titanium Dioxide Inverse Opal Structure
TL;DR: A three-dimensional electrode structure based on hydrogen reduced TiO2 with an inverse opal structure that is highly conductive and robust toward electrochemical cycling is reported to achieve both sulfur physical encapsulation and polysulfides binding simultaneously.
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Probing oxygen vacancy concentration and homogeneity in solid-oxide fuel-cell cathode materials on the subunit-cell level
Young-Min Kim,J. He,J. He,Michael D. Biegalski,Hailemariam Ambaye,Valeria Lauter,Hans M. Christen,Sokrates T. Pantelides,Sokrates T. Pantelides,Stephen J. Pennycook,Stephen J. Pennycook,Sergei V. Kalinin,Albina Y. Borisevich +12 more
TL;DR: An approach for direct mapping of oxygen vacancy concentrations based on local lattice parameter measurements by scanning transmission electron microscopy is developed and the concept of chemical expansivity is demonstrated to be applicable on the subunit-cell level: local stoichiometry variations produce local lattices expansion that can be quantified.
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Fuel from Water: The Photochemical Generation of Hydrogen from Water
Zhiji Han,Richard Eisenberg +1 more
TL;DR: The discovery and study of new Co and Ni catalysts are described that suggest H2 forms via a heterocoupling mechanism from a metal-hydride and a ligand-bound proton, and a major new development in the work described is the use of water-soluble CdSe quantum dots (QDs) as light absorbers for H2 generation in water.