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Energy storage

Chunlei Jiang, Yue Fang, Wenyong Zhang, Xiaohe Song, Jihui Lang, Lei Shi, Yongbing Tang
Sodium-ion batteries (SIBs) are a promising alternative for the large-scale energy storage owing to the natural abundance of sodium. However, the practical application of SIBs is still hindered by the low working voltage, poor rate performance, and insufficient cycling stability. Herein, we first report a sodium-ion based full battery using a multi-ion design. The optimized full batteries delivered a high working voltage of ~4.0 V, which is the best result of reported sodium-ion full batteries. Moreover, this multi-ion battery exhibited good rate performance up to 30 C and a high capacity retention of 95% over 500 cycles at 5 C...
October 15, 2018: Angewandte Chemie
Dorota Weiss, Jerzy Stangierski, Hanna Maria Baranowska, Ryszard Rezler
The aim of the study was to prepare mathematical models based on the Arrhenius equation as predictive tools for the assessment of changes in quality parameters during the storage of spreadable Gouda cheese at temperatures of 8, 20 and 30 °C. The activation energy value and the chemical reaction rate constant enabled the construction of kinetic models, which helped to estimate the direction and rate of changes. Moreover, the activation energy (Ea ) of the quality parameters was used to determine the sequence of their vulnerability during storage...
October 2018: Food Science and Biotechnology
Dong Sung Choi, Chanhoon Kim, Joonwon Lim, Su-Ho Cho, Gil Yong Lee, Ho Jin Lee, Jang Wook Choi, Heeyeon Kim, Il-Doo Kim, Sang Ouk Kim
Nanoscale materials offer enormous opportunities for catalysis, sensing, energy storage, and so on, along with their superior surface activity and extremely large surface area. Unfortunately, their strong reactivity causes severe degradation and oxidation even under ambient conditions and thereby deteriorates long-term usability. Here superlative stable graphene-encapsulated nanoparticles with a narrow diameter distribution prepared via in situ chemical vapor deposition (CVD) are presented. The judiciously designed CVD protocol generates 3 nm size metal and ceramic nanoparticles intimately encapsulated by few-layer graphene shells...
October 15, 2018: Advanced Materials
Crystal Chan, Enno Kätelhön, Richard G Compton
The Brownian motion of nanoparticles near liquid-solid interfaces is at the heart of evolving technologies: recent developments in the sensing of nano-objects and energy storages based on electro-active colloidal solutions crucially rely on the understanding and, even more, on the control of particle transport near charged surfaces. On the basis of the Nernst-Planck equation, the Gouy-Chapman model, and an established model of near-wall hindered diffusion, this work predicts transient and highly-localised accumulations of nanoparticles at a well-defined distance from an electrified surface following a potential being applied...
October 15, 2018: Nanoscale
Eleni Theocharidou, Marianna Papademetriou, Andromachi Reklou, Alexandros Sachinidis, Chrisoula Boutari, Olga Giouleme
BACKGROUND: Statin treatment exhibits a beneficial effect on non-alcoholic fatty liver disease (NAFLD) and on cardiovascular disease (CVD) in patients with NAFLD. OBJECTIVE: The aim of this review is to summarize the role of proprotein convertase subtilisin kexin type-9(PCSK9) in the pathogenesis of NAFLD and discuss the effects of the new hypolipidaemic drugs PCSK9 inhibitors on NAFLD. RESULTS: Data indicates that high intrahepatic or circulating PCSK9 levels increase muscle and liver lipid storage, adipose energy storage and hepatic fatty acids, as well as triglycerides storage and secretion, thus contributing to the pathogenesis of NAFLD...
October 10, 2018: Current Pharmaceutical Design
Cheng Tan, Calvin He, Wangwang Tang, Peter Kovalsky, John Fletcher, T David Waite
Capacitive de-ionization (CDI) systems are well-known for their low energy consumption making them suitable for applications powered by renewable energy. In this study, CDI technology is, for the first time, integrated with a suitably-scaled, stand-alone, renewable power system comprising photovoltaic panels and battery storage. Guidelines for designing and sizing such power systems are proposed including determining electrode charging current, PV panels and battery capacity. A 1 kW pilot plant was designed, constructed and operated to verify the proposed guidelines...
October 3, 2018: Water Research
Anatoly Golovnev, Matthew E Suss
A broad variety of materials, ranging from composites and heat transfer nano-fluids to electrochemical energy storage electrodes, widely employ cylindrical particles of various aspect ratios, such as carbon nanotubes. These particles are generally excellent conductors of heat and electricity and when dispersed in a continuous medium influence dramatically the transport properties of the heterogeneous material by forming a percolating network. Numerous theories exist to predict key parameters such as particle concentration at the percolation threshold and transport properties at concentrations beyond the threshold...
October 14, 2018: Journal of Chemical Physics
W Q Wang, Z J Yao, X L Wang, X H Xia, C D Gu, J P Tu
Exploring high performance cathode materials is of great means for the development of bi-functional electrochromic energy storage devices. Herein, Nb-doped WO3 mesoporous films as integrated high-quality cathode are successfully constructed via a facile sol-gel method. Chemical state and crystallinity of the WO3 based films are significantly influenced by doping concentration. Compared with the pure WO3 , the optimal Nb-doped film shows improved optical-electrochemical properties with high specific capacity (74...
October 4, 2018: Journal of Colloid and Interface Science
Sisi He, Fenglou Ni, Yujin Ji, Lie Wang, Yunzhou Wen, Haipeng Bai, Gejun Liu, Ye Zhang, Youyong Li, Bo Zhang, Huisheng Peng
Electrochemical reduction of CO2 to valuable chemical products is a promising strategy to store intermittent renewable energy and mitigate net greenhouse gas emissions. Among CO2 reduction products, formate has a high product value per electron, and can potentially be used in fuel cells, hydrogen storage, and pharmaceuticals synthesis. However, electrocatalysts for formate production have yet to exhibit the combination of high current density and high power conversion efficiency required for practical applications...
October 13, 2018: Angewandte Chemie
Penghe Zhao, Zhaokui Jin, Qian Chen, Tian Yang, Danyang Chen, Jin Meng, Xifeng Lu, Zhen Gu, Qianjun He
By delivering the concept of clean hydrogen energy and green catalysis to the biomedical field, engineering of hydrogen-generating nanomaterials for treatment of major diseases holds great promise. Leveraging virtue of versatile abilities of Pd hydride nanomaterials in high/stable hydrogen storage, self-catalytic hydrogenation, near-infrared (NIR) light absorption and photothermal conversion, here we utilize the cubic PdH0.2 nanocrystals for tumour-targeted and photoacoustic imaging (PAI)-guided hydrogenothermal therapy of cancer...
October 12, 2018: Nature Communications
George Manos, Lawrence J Dunne
Currently, metal-organic frameworks (MOFs) are receiving significant attention as part of an international push to use their special properties in an extensive variety of energy applications. In particular, MOFs have exceptional potential for gas storage especially for methane and hydrogen for automobiles. However, using theoretical approaches to investigate this important problem presents various difficulties. Here we present the outcomes of a basic theoretical investigation into methane adsorption in large pore MOFs with the aim of capturing the unique features of this phenomenon...
October 11, 2018: Nanomaterials
Sheng Li, Xiaoqiang Yu, Qili Feng
The insect fat body is analogous to vertebrate adipose tissue and liver. In this review, the new and exciting advancements made in fat body biology in the last decade are summarized. Controlled by hormonal and nutritional signals, insect fat body cells undergo mitosis during embryogenesis, endoreplication during the larval stages, and remodeling during metamorphosis and regulate reproduction in adults. Fat body tissues are major sites for nutrient storage, energy metabolism, innate immunity, and detoxification...
October 12, 2018: Annual Review of Entomology
Jianhui Li, Haiting Yan, Wei Wei, Lingjie Meng
Layered transition metal disulfides (TMDs) possess intriguing properties and hold enormous potential for applications in electronic, optoelectronic, catalytic and energy storage devices. It is an emerging and impactful technology to develop TMD alloys for diverse applications, but mass synthesis of the TMD alloys with tunable compositions and properties remains a major challenge. Herein, we develop a facile but effective microwave-assisted solvothermal method for mass production of Mo1-xWxS2 (0 ≤ x ≤ 1) alloy composites...
October 12, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Naveed Ullah Khan, Atif Ali, Hira Khan, Zaheer Ullah Khan, Zia Ahmed
Glutathione reduced (GSH) is the mother of all the antioxidants and has an antimelanogenic effect. It is extremely vulnerable to oxidation in the solution form which limits its use. The GSH in nano-oil droplets present a potential solution to this problem. The aim of this study was to formulate glutathione-loaded nanoemulsion and assess its stability studies over a 90-day testing period. To formulate GSH-loaded nanoemulsion pseudo-ternary phase diagram, it was built with various concentrations of water, liquid paraffin oil, and surfactant mixture (Tween 80 and Span 80)...
July 2018: Journal of Cosmetic Science
Feng-Quan Liu, Wen-Peng Wang, Ya-Xia Yin, Shuai-Feng Zhang, Ji-Lei Shi, Lu Wang, Xu-Dong Zhang, Yue Zheng, Jian-Jun Zhou, Lin Li, Yu-Guo Guo
High-energy lithium metal batteries (LMBs) are expected to play important roles in the next-generation energy storage systems. However, the uncontrolled Li dendrite growth in liquid electrolytes still impedes LMBs from authentic commercialization. Upgrading the traditional electrolyte system from liquid to solid and quasi-solid has therefore become a key issue for prospective LMBs. From this premise, it is particularly urgent to exploit facile strategies to accomplish this goal. We report that commercialized liquid electrolyte can be easily converted into a novel quasi-solid gel polymer electrolyte (GPE) via a simple and efficient in situ gelation strategy, which, in essence, is to use LiPF6 to induce the cationic polymerization of the ether-based 1,3-dioxolane and 1,2-dimethoxyethane liquid electrolyte under ambient temperature...
October 2018: Science Advances
Nicolas Kaeffer, Christopher D Windle, Romain Brisse, Corinne Gablin, Didier Leonard, Bruno Jousselme, Murielle Chavarot-Kerlidou, Vincent Artero
Dye-sensitized photo-electrochemical cells (DS-PECs) form an emerging technology for the large-scale storage of solar energy in the form of (solar) fuels because of the low cost and ease of processing of their constitutive photoelectrode materials. Preparing such molecular photocathodes requires a well-controlled co-immobilization of molecular dyes and catalysts onto transparent semiconducting materials. Here we used a series of surface analysis techniques to describe the molecular assembly of a push-pull organic dye and a cobalt diimine-dioxime catalyst co-grafted on a p-type NiO electrode substrate...
August 28, 2018: Chemical Science
Ran Tivony, Sam Safran, Philip Pincus, Gilad Silbert, Jacob Klein
Meso-porous electrodes (pore width « 1 µm) are a central component in electrochemical energy storage devices and related technologies, based on the capacitive nature of electric double-layers at their surfaces. This requires that such charging, limited by ion transport within the pores, is attained over the device operation time. Here we measure directly electric double layer charging within individual nano-slits, formed between gold and mica surfaces in a surface force balance, by monitoring transient surface forces in response to an applied electric potential...
October 11, 2018: Nature Communications
Joanna Burger, Michael Gochfeld, David S Kosson, Kevin G Brown, Lisa S Bliss, Amoret Bunn, James H Clarke, Henry J Mayer, Jennifer A Salisbury
Remediation and restoration of the Nation's nuclear legacy of radiological and chemical contaminated areas is an ongoing and costly challenge for the U.S. Department of Energy (DOE). For large sites, such as the Hanford and Savannah River Sites, successful remediation involves complex decisions related to remedies, end-states, timing, and sequencing of cleanup of separate and related contaminated units within a site. Hanford Site cannot clean up every unit simultaneously due to limits in funding, personnel, and technology...
February 1, 2019: Science of the Total Environment
Zheng Dong, Charles T Driscoll, John L Campbell, Afshin Pourmokhtarian, Anne M K Stoner, Katharine Hayhoe
Using statistically downscaled future climate scenarios and a version of the biogeochemical model (PnET-BGC) that was modified for use in the alpine tundra, we investigated changes in water, carbon, and nitrogen dynamics under the Representative Concentration Pathways at Niwot Ridge in Colorado, USA. Our simulations indicate that future hydrology will become more water-limited over the short-term due to the temperature-induced increases in leaf conductance, but remains energy-limited over the longer term because of anticipated future decreases in leaf area and increases in annual precipitation...
February 10, 2019: Science of the Total Environment
Steffen Heuser, Nianjun Yang, Felix Hof, Anna Schulte, Holger Schönherr, Xin Jiang
High-performance supercapacitors feature big and stable capacitances and high power and energy densities. To fabricate high-performance supercapacitors, 3D 3C-SiC/graphene hybrid nanolaminate films are grown via a microwave plasma-assisted chemical vapor deposition technique. Such films consist of 3D alternating structures of vertically aligned 3C-SiC and graphene layers, leading to high surface areas and excellent conductivity. They are further applied as the capacitor electrodes to construct electrical double layer capacitors (EDLCs) and pseudocapacitors (PCs) in both aqueous and organic solutions...
October 11, 2018: Small
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