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Lithium ion battery

Sinho Choi, Yoon-Gyo Cho, Jieun Kim, Nam-Soon Choi, Hyun-Kon Song, Guoxiu Wang, Soojin Park
Porous structured materials have unique architectures and are promising for lithium-ion batteries to enhance performances. In particular, mesoporous materials have many advantages including a high surface area and large void spaces which can increase reactivity and accessibility of lithium ions. This study reports a synthesis of newly developed mesoporous germanium (Ge) particles prepared by a zincothermic reduction at a mild temperature for high performance lithium-ion batteries which can operate in a wide temperature range...
January 18, 2017: Small
Yingying Zhao, Zhixuan Wei, Qiang Pang, Yingjin Wei, Yongmao Cai, Qiang Fu, Fei Du, Angelina Sarapulova, Helmut Ehrenberg, Bingbing Liu, Gang Chen
A Carbon-coated Mg0.5Ti2(PO4)3 polyanion material was prepared by the sol-gel method and then studied as the negative electrode materials for lithium-ion and sodium-ion batteries. The material showed a specific capacity of 268.6 mAh g-1 in the voltage window of 0.01-3.0 V vs. Na+/Na0. Due to the fast diffusion of Na+ in the NASICON framework, the material exhibited superior rate capability with a specific capacity of 94.4 mAh g-1 at a current density of 5A g-1. Additionally, 99.1 % capacity retention was achieved after 300 cycles, demonstrating excellent cycle stability...
January 18, 2017: ACS Applied Materials & Interfaces
Guowei Li, Graeme R Blake, Thomas T M Palstra
Vacancies exist throughout nature and determine the physical properties of materials. By manipulating the density and distribution of vacancies, it is possible to influence their physical properties such as band-gap, conductivity, magnetism, etc. This can generate exciting applications in the fields of water treatment, energy storage, and physical devices such as resistance-change memories. In this review, we focus on recent progress in vacancy engineering for the design of materials for energy harvesting applications...
January 18, 2017: Chemical Society Reviews
Heng Zhang, Chunmei Li, Michal Piszcz, Estibaliz Coya, Teofilo Rojo, Lide M Rodriguez-Martinez, Michel Armand, Zhibin Zhou
Electrochemical energy storage is one of the main societal challenges to humankind in this century. The performances of classical Li-ion batteries (LIBs) with non-aqueous liquid electrolytes have made great advances in the past two decades, but the intrinsic instability of liquid electrolytes results in safety issues, and the energy density of the state-of-the-art LIBs cannot satisfy the practical requirement. Therefore, rechargeable lithium metal batteries (LMBs) have been intensively investigated considering the high theoretical capacity of lithium metal and its low negative potential...
January 18, 2017: Chemical Society Reviews
Yan Zhong, Yifan Ma, Qiubo Guo, Jiaqi Liu, Yadong Wang, Mei Yang, Hui Xia
Highlighted by the safe operation and stable performances, titanium oxides (TiO2) are deemed as promising candidates for next generation lithium-ion batteries (LIBs). However, the pervasively low capacity is casting shadow on desirable electrochemical behaviors and obscuring their practical applications. In this work, we reported a unique template-assisted and two-step atomic layer deposition (ALD) method to achieve TiO2@Fe2O3 core-shell nanotube arrays with hollow interior and double-wall coating. The as-prepared architecture combines both merits of the high specific capacity of Fe2O3 and structural stability of TiO2 backbone...
January 18, 2017: Scientific Reports
Kai Liu, Wei Liu, Yongcai Qiu, Biao Kong, Yongming Sun, Zheng Chen, Denys Zhuo, Dingchang Lin, Yi Cui
Although the energy densities of batteries continue to increase, safety problems (for example, fires and explosions) associated with the use of highly flammable liquid organic electrolytes remain a big issue, significantly hindering further practical applications of the next generation of high-energy batteries. We have fabricated a novel "smart" nonwoven electrospun separator with thermal-triggered flame-retardant properties for lithium-ion batteries. The encapsulation of a flame retardant inside a protective polymer shell has prevented direct dissolution of the retardant agent into the electrolyte, which would otherwise have negative effects on battery performance...
January 2017: Science Advances
Jiajia Ye, Zhihong Wang, Qin Hao, Binbin Liu, Caixia Xu
Fe3O4 octahedra embedded in conductive nanoporous copper (NPC) network are straightforwardly fabricated by means of alloy refining followed by facile electroless dealloying in mild condition. During selectively dissolving the Al from FeCuAl alloy, the residual Cu atoms assemble to form sponge-like nanostructure, meanwhile the Fe atoms undergo spontaneous oxidation and aggregation to grow into Fe3O4 octahedra travelled through NPC network. Owing to the combination of conductive NPC network, Fe3O4 octahedra exhibit dramatically enhanced lithium storage performances with excellent reversible capacity, enhanced rate performance, as well outstanding cyclability compared with pure Fe3O4 octahedra...
January 11, 2017: Journal of Colloid and Interface Science
Le Yu, Han Hu, Hao Bin Wu, Xiong Wen David Lou
Hollow nanostructures offer promising potential for advanced energy storage and conversion applications. In the past decade, considerable research efforts have been devoted to the design and synthesis of hollow nanostructures with high complexity by manipulating their geometric morphology, chemical composition, and building block and interior architecture to boost their electrochemical performance, fulfilling the increasing global demand for renewable and sustainable energy sources. In this Review, we present a comprehensive overview of the synthesis and energy-related applications of complex hollow nanostructures...
January 16, 2017: Advanced Materials
Pengfei Yan, Jianming Zheng, Meng Gu, Jie Xiao, Ji-Guang Zhang, Chong-Min Wang
LiNi1/3Mn1/3Co1/3O2-layered cathode is often fabricated in the form of secondary particles, consisting of densely packed primary particles. This offers advantages for high energy density and alleviation of cathode side reactions/corrosions, but introduces drawbacks such as intergranular cracking. Here, we report unexpected observations on the nucleation and growth of intragranular cracks in a commercial LiNi1/3Mn1/3Co1/3O2 cathode by using advanced scanning transmission electron microscopy. We find the formation of the intragranular cracks is directly associated with high-voltage cycling, an electrochemically driven and diffusion-controlled process...
January 16, 2017: Nature Communications
Wenfang Gao, Xihua Zhang, Xiaohong Zheng, Xiao Lin, Hongbin Cao, Yi Zhang, Zhi H I Sun
A closed-loop process to recover lithium carbonate from cathode scrap of lithium-ion battery (LIB) is developed. Lithium could be selectively leached into solution using formic acid while aluminum remained as metallic form and most of other metals from the cathode scrap could be precipitated out. This phenomenon clearly demonstrates that formic acid can be used for lithium recovery from cathode scrap, as both leaching and separation reagent. By investigating the effects of different parameters including temperature, formic acid concentration, H2O2 amount and solid to liquid ratio, the leaching rate of Li can reach 99...
January 12, 2017: Environmental Science & Technology
Congyan Zhang, Ming Yu, George Anderson, Ruchira Ravinath Dharmasena, Gamini Sumanasekera
To completely understand lithium adsorption, diffusion, and capacity on the surface of phosphorene and, therefore, the prospects of phosphorene as an anode material for high-performance lithium-ion batteries (LIBs), we carried out density-functional-theory calculations and studied the lithium adsorption energy landscape, the lithium diffusion mobility, the lithium intercalation, and the lithium capacity of phosphorene. We also carried out, for the very first time, experimental measurement of the lithium capacity of phosphorene...
January 12, 2017: Nanotechnology
Wei-Chung Chang, Kuan-Wei Tseng, Hsing-Yu Tuan
Red Phosphorus (RP) is a promising anode material for lithium-ion battery due to its earth abundance and a high theoretical capacity of 2596 mA h g-1. Although RP-based anodes for lithium-ion batteries have been reported, they were all in the form of carbon/P composites, including P-graphene, P-graphite, P-CNTs and P-carbon black, in order to improve P's extremely low conductivity and large volume change during cycling process. Here we report the large-scale synthesis of red phosphorus nanoparticles (RPNPs) with sizes ranging from 100 to 200 nm by reacting PI3 with ethylene glycol in the presence of cetyltrimethylammonium bromide (CTAB) in ambient environment...
January 12, 2017: Nano Letters
Yinghui Yin, Ruijie Zhao, Yue Deng, Alejandro A Franco
We simulated the discharge process of Li-O2 batteries and the growth of Li2O2 thin films at the mesoscale with a novel kinetic Monte Carlo model, which combined a stochastic description of mass transport and detailed elementary reaction kinetics. The simulation results show that the ordering of the Li2O2 thin film is determined by the interplay between diffusion and reaction kinetics. Due to the fast reaction kinetics on the catalyst, the Li2O2 formed in the presence of catalyst (cat-CNF) shows a low degree of ordering and is more likely to be amorphous...
January 19, 2017: Journal of Physical Chemistry Letters
Brett M Savoie, Michael A Webb, Thomas F Miller
Solid polymer electrolytes (SPE) have the potential to increase both the energy density and stability of lithium-based batteries, but low Li+ conductivity remains a barrier to technological viability. SPEs are designed to maximize Li+ diffusivity relative to the anion, while maintaining sufficient salt solubility. It is thus remarkable that polyethylene oxide (PEO), the most widely used SPE, exhibits Li+ diffusivity that is an order of magnitude smaller than that of typical counter-ions at moderate salt concentrations...
January 11, 2017: Journal of Physical Chemistry Letters
Jiagang Xu, Long Zhang, Yikai Wang, Tao Chen, Mohanad Al-Shroofy, Yang-Tse Cheng
Because of its natural abundance and high theoretical specific capacity (3579 mAh g-1, based on Li15Si4), silicon and its composites have been extensively studied as the negative electrode for future high energy density lithium-ion batteries. While the rapid failure due to significant volumetric strain of lithium-silicon reactions makes bulk silicon unsuitable for practical applications, silicon nanoparticles can sustain the large volume changes without fracturing. However, polymeric binders are usually required to maintain the structural integrity of electrodes made of particles...
January 11, 2017: ACS Applied Materials & Interfaces
Ang Li, Yan Tong, Bin Cao, Huaihe Song, Zhihong Li, Xiaohong Chen, Jisheng Zhou, Gen Chen, Hongmei Luo
Porous carbon is one of the most promising alternatives to traditional graphite materials in lithium-ion batteries. This is not only attributed to its advantages of good safety, stability and electrical conductivity, which are held by all the carbon-based electrodes, but also especially ascribed to its relatively high capacity and excellent cycle stability. Here we report the design and synthesis of a highly porous pure carbon material with multifractal structures. This material is prepared by the vacuum carbonization of a zinc-based metal-organic framework, which demonstrates an ultrahigh lithium storage capacity of 2458 mAh g(-1) and a favorable high-rate performance...
January 11, 2017: Scientific Reports
Huijie Wen, Jianjun Zhang, Jingchao Chai, Jun Ma, Liping Yue, Tiantian Dong, Xiao Zang, Zhihong Liu, Botao Zhang, Guanglei Cui
Nowadays' high-voltage lithium ion battery becomes the research focus. As a major part of lithium batteries, separator plays a critical role in the development of high-voltage lithium batteries. Herein, we demonstrated a sustainable and superior heat-resistant alginate nonwoven separator for high-voltage (5 V) lithium batteries. It was demonstrated that the resultant alginate nonwoven separator exhibited better mechanical property (37 MPa), superior thermal stability (up to 150 oC) and higher ionic conductivity (1...
January 11, 2017: ACS Applied Materials & Interfaces
Daniele Di Lecce, Roberta Verrelli, Daniele Campanella, Vittorio Marangon, Jusef Hassoun
Ternary CuO-Fe2O3-MCMB conversion anode is herein characterized and combined with high-voltage Li1.35Ni0.48Fe0.1Mn1.72O4 spinel cathode in a lithium-ion battery of relevant performances in terms of cycling stability and rate capability. The CuO-Fe2O3-MCMB composite is prepared using high-energy milling, i.e., a low-cost pathway which leads to a crystalline structure, and homogeneous submicrometrical morphology revealed by X-ray diffraction and electronic microscopy. The anode reversibly exchanges lithium ions by conversion reactions of CuO and Fe2O3, as well as by insertion into MCMB carbon...
January 10, 2017: ChemSusChem
Allen Pei, Guangyuan Zheng, Feifei Shi, Yuzhang Li, Yi Cui
Lithium metal has re-emerged as an exciting anode for high energy lithium-ion batteries due to its high specific capacity of 3,860 mAh g(-1) and lowest electrochemical potential of all known materials. However, lithium has been plagued by the issues of dendrite formation, high chemical reactivity with electrolyte, and infinite relative volume expansion during plating and stripping, which present safety hazards and low cycling efficiency in batteries with lithium metal electrodes. There have been a lot of recent studies on Li metal although little work has focused on the initial nucleation and growth behavior of Li metal, neglecting a critical fundamental scientific foundation of Li plating...
January 10, 2017: Nano Letters
Gui-Liang Xu, Tian Sheng, Lina Chong, Tianyuan Ma, Chengjun Sun, Xiaobing Zuo, Di-Jia Liu, Yang Ren, Xiaoyi Zhang, Yuzi Liu, Steve M Heald, Shi-Gang Sun, Zonghai Chen, Khalil Amine
Sodium-ion batteries (SIBs) have been considered as one of the promising power source candidates for the stationary storage industries owing to the much lower cost of sodium than lithium. It's well known that the electrode materials largely determine the energy density of the battery systems. However, recent discoveries on the electrode materials showed that most of them present distinct lithium and sodium storage performance, which is not yet well understood. In this work, we performed a comparative understanding on the structural changes of porous cobalt oxide during its electrochemical lithiation and sodiation process by in operando synchrotron small angel X-ray scattering, X-ray diffraction and X-ray absorption spectroscopy...
January 10, 2017: Nano Letters
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