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Lithium ion battery

Peng Zhang, Furong Qin, Lei Zou, Mengran Wang, Kai Zhang, Yanqing Lai, Jie Li
Sodium-ion batteries (SIBs) show great potential as alternative energy storage devices for next generation energy storage systems due to the deficiency of lithium resources. MoS2 is a promising anode material for SIBs due to its high theoretical sodium storage capability and large interspace for accommodating sodium ions with a larger ionic radius than lithium ions. However, bulk MoS2 exhibits a sluggish kinetics for the intercalation-deintercalation of sodium ions and large volume expansion, which result in poor cyclability and rate performance...
August 14, 2017: Nanoscale
Min Li, Haoran Du, Long Kuai, Kuangfu Huang, Yuanyuan Xia, Baoyou Geng
Carbon-based transition metal oxides are considered as an appropriate anode material candidate for lithium ion batteries. Herein, a simple and scalable dry-production method is developed to produce carbon-encapsulated 3D net-like FeOx/C material. The process simply associates with pyrolysis of solid carbon source of filter paper with adsorbed ferrite nitrate. The carbon derived from filter paper induces a carbothermal reduction to form metallic Fe, the adding carbon and metal Fe increase the conductivity of this material...
August 14, 2017: Angewandte Chemie
Chunhua Han, Baoxuan Zhang, Kangning Zhao, Jiashen Meng, Qiu He, Pan He, Wei Yang, Qi Li, Liqiang Mai
SnO2 nanotubes are synthesized via an oxalate-assisted "redox etching and precipitating" route between MnOOH nanowires and Sn(2+) ions. The addition of oxalate is found to be crucial to guide the formation of uniform SnO2 nanotubes. To further improve the conductivity and stability, the as-obtained SnO2 nanotubes are coated with a thin carbon layer. The resulting carbon-confined SnO2 nanotubes possess superior rate performance as an anode material for lithium-ion batteries.
August 14, 2017: Chemical Communications: Chem Comm
Tsung-Chun Tsai, Guan-Min Huang, Chun-Wei Huang, Jui-Yuan Chen, Chih-Chieh Yang, Tseung-Yuen Tseng, Wen-Wei Wu
Transition metal oxides have attracted much interest owing to their ability to provide high power density in lithium batteries; therefore, it is important to understand the electrochemical behavior and mechanism of lithiation-delithiation processes. In this study, we successfully and directly observed the structural evolution of CNTs/MnO2 during the lithiation process using transmission electron microscopy (TEM). CNTs/MnO2 were selected due to their high surface area and capacitance effect, and the lithiation mechanism of the CNT wall expansion was systematically analyzed...
August 14, 2017: Analytical Chemistry
ChengJian Xu, Wenxuan Zhang, Wenzhi He, Guangming Li, Juwen Huang, Haochen Zhu
With the increasing adoption of EVs (electric vehicles), a large number of waste EV LIBs (electric vehicle lithium-ion batteries) were generated in China. Statistics showed generation of waste EV LIBs in 2016 reached approximately 10,000 tons, and the amount of them would be growing rapidly in the future. In view of the deleterious effects of waste EV LIBs on the environment and the valuable energy storage capacity or materials that can be reused in them, China has started emphasizing the management, reuse, and recycling of them...
August 12, 2017: Environmental Science and Pollution Research International
Kai He, Zhenpeng Yao, Sooyeon Hwang, Na Li, Ke Sun, Hong Gan, Yaping Du, Hua Zhang, Chris Wolverton, Dong Su
Two-dimensional (2D) transition metal chalcogenides have been widely studied and utilized as electrode materials for lithium ion batteries due to their unique layered structures to accommodate reversible lithium insertion. Real-time observation and mechanistic understanding of the phase transformations during lithiation of these materials are critically important for improving battery performance by controlling structures and reaction pathways. Here, we use in situ transmission electron microscopy methods to study the structural, morphological, and chemical evolutions in individual copper sulfide (CuS) nanoflakes during lithiation...
August 11, 2017: Nano Letters
Shi Chen, Tao He, Yuefeng Su, Yun Lu, Liying Bao, Lai Chen, Qiyu Zhang, Jing Wang, Renjie Chen, Feng Wu
Ni-rich materials are appealing to replace LiCoO2 as cathodes in Li-ion batteries due to their low cost and high capacity. However, there are also some disadvantages for Ni-rich cathode materials such as poor cycling and rate performance, especially under high voltage. Here, we demonstrate the effect of dual-conductive layers composed of Li3PO4 and PPy for layered Ni-rich cathode material. Fourier Transform Infrared Spectroscopy and X-ray photoelectron spectroscopy show that the coating layers are composed of Li3PO4 and PPy...
August 11, 2017: ACS Applied Materials & Interfaces
Yunchao Li, Yongqiang Cheng, Luke L Daemen, Gabriel M Veith, Alan M Levine, Richard J Lee, Shannon M Mahurin, Sheng Dai, Amit K Naskar, Mariappan Parans Paranthaman
Sulfonated tire-derived carbons have been demonstrated to be high value-added carbon products of tire recycling in several energy storage system applications including lithium, sodium, potassium ion batteries and supercapacitors. In this communication, we compared different temperature pyrolyzed sulfonated tire-derived carbons with commercial graphite and unmodified/non-functionalized tire-derived carbon by studying the surface chemistry and properties, vibrational spectroscopy of the molecular structure, chemical bonding such as C-H bonding, and intermolecular interactions of the carbon materials...
August 11, 2017: Physical Chemistry Chemical Physics: PCCP
Hua Zhang, Juntan Yang, Haoqing Hou, Shuiliang Chen, Haimin Yao
In this paper, a novel nitrogen-doped carbon paper (NCP) with both highly dense three-dimensional cellular structure and excellent bending flexibility is fabricated by pyrolyzing a melamine foam under compression. When serving as a free-standing anode for lithium-ion batteries, the NCP electrode delivers a reversible capacity up to 329.8 mA h g(-1) after 200 cycles at 0.5 A g(-1) (1.34 C) and 126.5 mA h g(-1) after 500 cycles at 8.0 A g(-1) (21.5 C). Such electrochemical performance is much higher than those of the counterparts prepared by pyrolysis without compression and can be mainly attributed to (a) the 3D highly dense interconnected carbon network with numerous junctions which can facilitate the efficient electron transfer and provide short transportation paths for lithium ions; and (b) the excellent mechanical flexibility and self-standing capability which exempt the use of binder, conductive additive and current collector...
August 10, 2017: Scientific Reports
Changyong Liu, Xingxing Cheng, Bohan Li, Zhangwei Chen, Shengli Mi, Changshi Lao
LiFePO₄ (LFP) is a promising cathode material for lithium-ion batteries. In this study, low temperature direct writing (LTDW)-based 3D printing was used to fabricate three-dimensional (3D) LFP electrodes for the first time. LFP inks were deposited into a low temperature chamber and solidified to maintain the shape and mechanical integrity of the printed features. The printed LFP electrodes were then freeze-dried to remove the solvents so that highly-porous architectures in the electrodes were obtained. LFP inks capable of freezing at low temperature was developed by adding 1,4 dioxane as a freezing agent...
August 10, 2017: Materials
Man Gao, Kaixiang Zou, Yuanfu Deng, Zhenxia Zhao, Yingwei Li, Guohua Chen
A nanocomposite of ultra-fine anatase nanoparticles (< 5 nm) embedded N-doped carbon (TiO2-NPs/NC) with a relatively low specific surface area was successfully synthesized by in-situ pyrolysis of a new and cheap single source precursor of (H2en)3[Ti4(O2)4(Hcit)2(cit)2]∙12H2O (en = ethylenediamine and H4cit = citric acid) under 550 oC and inert atmosphere. The precursor in crystalline state was isolated from an aqueous solution containing of titanium butoxide, citric acid, hydrogen peroxide and ethylenediamine and was characterized...
August 10, 2017: ACS Applied Materials & Interfaces
Yuan Yue, Daniel Juarez-Robles, Yan Chen, Lian Ma, Winson C H Kuo, Partha P Mukherjee, Hong Liang
The electrochemical performance of anodes made of transition metal oxides (TMOs) in lithium-ion batteries (LIBs) often suffers from their chemical and mechanical instability. In this research, a novel electrode with a hierarchical current collector for TMO active materials is successfully fabricated. It consists porous nickel as current collector on a copper substrate. The copper has vertically-aligned micro-channels. Anatase titanium dioxide (TiO2) nanoparticles of ~100 nm are directly synthesized and casted on the porous Ni using a one-step process...
August 10, 2017: ACS Applied Materials & Interfaces
Mao-Xiang Jing, Jing-Quan Li, Chong Han, Shan-Shan Yao, Ji Zhang, Hong-Ai Zhai, Li-Li Chen, Xiang-Qian Shen, Ke-Song Xiao
Improving the specific capacity and electronic conductivity of TiO2 can boost its practical application as a promising anode material for lithium ion batteries. In this work, a three-dimensional networking oxygen-deficient nano TiO2-x/carbon fibre membrane was achieved by combining the electrospinning process with a hot-press sintering method and directly used as a self-standing anode. With the synergistic effects of three-dimensional conductive networks, surface oxygen deficiency, high specific surface area and high porosity, binder-free and self-standing structure, etc...
July 2017: Royal Society Open Science
João Coelho, Anuj Pokle, Sang-Hoon Park, Niall McEvoy, Nina C Berner, Georg S Duesberg, Valeria Nicolosi
In this work, lithium titanate nanoparticles (nLTO)/single wall carbon nanotubes (SWCNT) composite electrodes are prepared by the combination of an ultrasound irradiation and ultrasonic spray deposition methods. It was found that a mass fraction of 15% carbon nanotubes optimizes the electrochemical performance of nLTO electrodes. These present capacities as high as 173, 130, 110 and 70 mAh.g(-1) at 0.1C, 1C, 10C and 100C, respectively. Moreover, after 1000 cycles at 1C, the nLTO/SWCNT composites present a capacity loss of just 9% and a Coulombic efficiency of 99...
August 8, 2017: Scientific Reports
Yuzi Zhang, Yue Pan, Yingnan Dong, Brett L Lucht, Arijit Bose
Tin (Sn) is a useful anode material for lithium ion batteries (LIBs) because of its high theoretical capacity. We fabricated oil-in-water emulsion-templated tin nanoparticle/carbon black (SnNP/CB) anodes with octane, hexadecane, 1-chlorohexadecane and 1-bromohexadecane as the oil phases. Emulsion creaming, the oil vapor pressure and the emulsion droplet size distribution all affect drying and thus the morphology of the dried emulsion. This morphology has a direct impact on the electrochemical performance of the anode...
August 7, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Hong-Jie Peng, Jia-Qi Huang, Qiang Zhang
Flexible energy storage systems are imperative for emerging flexible devices that are revolutionizing our life. Lithium-ion batteries, the current main power sources, are gradually approaching their theoretical limitation in terms of energy density. Therefore, alternative battery chemistries are urgently required for next-generation flexible power sources with high energy densities, low cost, and inherent safety. Flexible lithium-sulfur (Li-S) batteries and analogous flexible alkali metal-chalcogen batteries are of paramount interest owing to their high energy densities endowed by multielectron chemistry...
August 7, 2017: Chemical Society Reviews
Peiyu Hou, Hongzhou Zhang, Xiaolong Deng, Xijin Xu, Lianqi Zhang
The unstable electrode/electrolyte interface of high-capacity LiNi0.8Co0.15Al0.05O2 (NCA) cathodes, especially at highly delithiated state, usually leads to the transformation of layered to spinel and/or rock-salt phases, resulting in drastic capacity fade and poor thermal stability. Herein, the Al-increased and Ni, Co-decreased electrode surface is fabricated through tailoring element distribution in micron-sized spherical NCA secondary particles via co-precipitation and solid-state reactions, aimed at stabilizing the electrode/electrolyte interface during continuous cycles...
August 7, 2017: ACS Applied Materials & Interfaces
Huan Liu, Xinlu Wang, Hang Xu, Wensheng Yu, Xiangting Dong, Ying Yang, Hongbo Zhang, Jinxian Wang
Nanostructured CoO/NiO/CoNi composites as anode materials for lithium-ion batteries (LIBs) have been successfully prepared by a facile, straightforward, and large-scale dealloying method. The effects of NaOH solution concentration on the structure, morphology and electrochemical performances of the resulting products are studied systematically. These results indicate that the concentration of NaOH solution mainly influences the morphology of the CoO/NiO/CoNi composites. Cyclic voltammetry (CV) and charge-discharge tests have been conducted to assess the lithium storage performances of the CoO/NiO/CoNi anodes obtained from the 5 M NaOH solution...
August 7, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
Aoxuan Wang, Xianfei Hu, Haoqing Tang, Chanyuan Zhang, Shan Liu, Yingwei Yang, Quanhong Yang, Jiayan Luo
Sodium ion batteries are similar in concept and function to lithium ion batteries, but their development and commercialization lag far behind. One obstacle is the lack of a standard reference electrode. Unlike Li foil reference electrodes, sodium is not easily processable or moldable and it deform easily. Here we fabricate a processable and moldable composite sodium metal anode made from sodium and reduced graphene oxide. With only 4.5% percent of reduced graphene oxide, the composite anodes exhibit improved hardness, strength and stability to corrosion compared to sodium metal, and can be engineered to various shapes and sizes...
August 6, 2017: Angewandte Chemie
Ji-Liang Niu, Gui-Xia Hao, Jia Lin, Xiao-Bin He, Palanivel Sathishkumar, Xiao-Ming Lin, Yue-Peng Cai
By application of newly designed ligand 5-(3-(pyridin-3-yl)benzamido)isophthalic acid (H2PBI) to react with Mn(NO3)2 under solvothermal conditions, a 2-fold interpenetrated Mn-based metal-organic framework (Mn-PBI) with rutile-type topology has been obtained. When treated as a precursor by pyrolysis of Mn-PBI at 500 °C, mesoporous MnO/C-N nanostructures were prepared and treated as an lithium-ion battery anode. The MnO/C-N manifests good capacity of approximately 1085 mAh g(-1) after 100 cycles together with superior cyclic stability and remarkable rate capacity, which is supposed to benefit from a large accessible specific area and unique nanostructures...
August 4, 2017: Inorganic Chemistry
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