A dual-functional gel-polymer electrolyte for lithium ion batteries with superior rate and safety performances

2017 ◽  
Vol 5 (35) ◽  
pp. 18888-18895 ◽  
Author(s):  
Xilin Li ◽  
Kun Qian ◽  
Yan-Bing He ◽  
Cheng Liu ◽  
Decheng An ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Polymer Electrolyte ◽  
Gel Polymer Electrolyte ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Dual Functional ◽  
Li Ion

An attractive approach to fabricate high energy density and safe Li-ion batteries was proposed by utilizing a pentaerythritol tetraacrylate-based gel-polymer electrolyte.

New high-energy-density GeTe-based anodes for Li-ion batteries

2019 ◽  
Vol 7 (7) ◽  
pp. 3278-3288 ◽  
Author(s):  
Ki-Hun Nam ◽  
Geon-Kyu Sung ◽  
Jeong-Hee Choi ◽  
Jong-Sang Youn ◽  
Ki-Joon Jeon ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Electrochemical Behaviors ◽  
Germanium Telluride ◽  
Li Ion

A layered germanium telluride (GeTe) and its C-modified nanocomposite (GeTe–C) are synthesized by a simple solid-state synthesis technique, and their electrochemical behaviors for rechargeable lithium-ion batteries (LIBs) are evaluated.

Ni-rich LiNi0·8Co0·1Mn0·1O2 coated with Li-ion conductive Li3PO4 as competitive cathodes for high-energy-density lithium ion batteries

2020 ◽  
Vol 340 ◽  
pp. 135871 ◽  
Author(s):  
Wenheng Zhang ◽  
Longwei Liang ◽  
Fei Zhao ◽  
Yang Liu ◽  
Linrui Hou ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion

Tris (2, 2, 2-Trifluoroethyl) Phosphate (TFP) as Flame-Retarded Additives for Li-Ion Batteries

2013 ◽  
Vol 787 ◽  
pp. 40-45 ◽  
Author(s):  
Wei Wang ◽  
Shi Xiong Wang ◽  
Yun Bo He ◽  
Xiang Jun Yang ◽  
Hong Guo
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Batteries ◽  
Large Scale ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Long Cycle Life ◽  
Flame Retarded ◽  
Li Ion

With high energy density, long cycle life and high voltage Lithium-ion batteries are one of very promising pollution-free power supply. The electrolytes for these batteries consist of flammable organic solvents which are serious hazard under abusive conditions especially for large-scale lithium batteries. To reduce flammability of electrolyte of lithium-ion batteries and resolve safety problem, Tris (2, 2, 2-trifluoroethyl) phosphate (TFP) was synthesized and added into electrolytes as additive. It was found that the SET decreased significantly with the increase of the concentration of TFP. When the concentration is over 20% (vol.) electrolytes are nonflammable. At the same time, with the concentration increasing, the ion-conductivity decreased and the discharge capacity also came down slowly. The electrochemistry stability of LiCoO2 cathode was improved. According to our study, it is possible to find a cosolvent or additive that makes nonflammable lithium-ion electrolyte be put into practice.

Enabling Stable and High-Rate Cycling of Ni-Rich Layered Oxide Cathode for Lithium-Ion Batteries by Modification with an Artificial Li+-Conducting Cathode-Electrolyte Interphase

2021 ◽  
Author(s):  
Shixuan Wang ◽  
Alvin Dai ◽  
Yuliang Cao ◽  
Han Xi Yang ◽  
Khalil Amine ◽  
...  
Keyword(s):  
Energy Density ◽  
Thermal Instability ◽  
Lithium Ion ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Oxide Cathode ◽  
Li Ion ◽  
Long Life

Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathodes are investigated to realize high energy density Li ion batteries for long life electric vehicle applications. However, capacity decay and thermal instability due to cathode-electrolyte interfacial...

scholarly journals Dependence of Li-Ion Battery Energy Density on Separator Thickness

2021 ◽  
Author(s):  
gaolong zhu ◽  
yuyu he ◽  
yunlong deng ◽  
ming wang ◽  
xiaoyan liu ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Rational Design ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Li Ion ◽  
Battery Energy

Abstract High energy density lithium-ion batteries are urgently needed due to the rapid growth demands of electric vehicles, electronic devices, and grid energy storage devices. There is still significant opportunity to improve the energy density of existing state-of-the-art lithium-ion batteries by optimizing the separator thickness, which is usually ignored. Here, the dependence of battery gravimetric and volumetric energy densities on separator thickness has been quantitatively discussed in different type Li-ion batteries by calculations combined with experiments. With a decrease in separator thickness, the volumetric energy density is greatly improved. Meanwhile, the gravimetric energy densities are significantly improved as the electrolyte soaking in the separator is reduced. The gravimetric and volumetric energy densities of graphite (Gr) | NCM523 cells enable to increase 11.5% and 29.7%, respectively, by reducing the thickness of separator from 25 μm to 7 μm. Furthermore, the Li | S battery exhibits an extremely high energy density of 664.2 Wh Kg-1 when the thickness of the separator is reduced to 1 μm. This work sheds fresh light on the rational design of high energy density lithium-ion batteries.

A Review of Nanostructured TiO2 Application in Li-Ion Batteries

2013 ◽  
Vol 750-752 ◽  
pp. 301-306 ◽  
Author(s):  
Jiang Wei ◽  
Jian Xiong Liu ◽  
Yu Chun Dang ◽  
Kun Xu ◽  
Yi Zhou
Keyword(s):  
Electron Transfer ◽  
Energy Density ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Future Research ◽  
Li Ion Batteries ◽  
Diffusion Distance ◽  
Li Ion ◽  
Insertion Sites

TiO2has large potential ability in Lithium-ion batteries due to its high energy density and safety. The main reasons that limit the performance of TiO2electrode is its low real capacity which caused by poor conductivity and other factors. Varying bulk TiO2materials to nanoscale is believed a promising method as it could increase Li insertion sites, short the ions diffusion distance and enhance the kinetics. In addition, doping heterogeneous elements or compositing other conductivity materials could enable TiO2to improve electron transfer ability. In this paper, we reviewed the electrochemical performance of some nanostructured TiO2and analyzed the merits and weaknesses. Some challenges and perspectives for future research were also discussed.

scholarly journals Operando Raman analysis of electrolyte changes in Li-ion batteries with hollow-core optical fibre sensors

2021 ◽  
Author(s):  
Ermanno Miele ◽  
Wesley Dose ◽  
Ilya Manyakin ◽  
Michael Frosz ◽  
Michael De Volder ◽  
...  
Keyword(s):  
Energy Density ◽  
Optical Fibre ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Materials ◽  
Solvation Dynamics ◽  
Li Ion Batteries ◽  
Hollow Core ◽  
Li Ion

Abstract New methods are urgently required to identify degradation and failure mechanisms in high energy density energy storage materials such as Ni-rich LiNi0.8Mn0.1Co0.1O2 cathodes (NMC811) for Li-ion batteries. Understanding and ultimately avoiding these mechanisms requires in-situ tracking of the complex electrochemical processes that occur in different parts of battery cells. Here we demonstrate a new operando spectroscopy method that enables the tracking of electrolyte chemistry, applied here for high energy density Li-ion batteries with a NMC811 cathode, during electrochemical cycling. This is achieved by embedding a novel hollow-core optical fibre probe inside the battery to monitor the evolution of electrolyte species by background-free Raman spectroscopy. Our data reveals changes in the ratio of carbonate solvents and electrolyte additives as a function of the cell voltage, as well as changes in the lithium-ion solvation dynamics. This advanced operando methodology delivers a new way to study battery degradation mechanisms, and the understanding it develops should contribute to extending the lifetime of next-generation batteries.

scholarly journals Oscillating Heat Pipe Cooling System of Electric Vehicle’s Li-Ion Batteries with Direct Contact Bottom Cooling Mode

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1698 ◽  
Author(s):  
Ri-Guang Chi ◽  
Seok-Ho Rhi
Keyword(s):  
Lithium Ion Batteries ◽  
Heat Pipe ◽  
Cooling System ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Coolant Temperature ◽  
Li Ion Batteries ◽  
Oscillating Heat Pipe ◽  
Li Ion

Recently, the use of electrical vehicles has abruptly increased due to environmental crises. The high energy density of lithium-ion batteries is their main advantage for use in electric vehicles (EVs). However, the thermal management of Li-ion batteries is a challenge due to the poor heat resistance of Lithium ions. The performance and lifetime of lithium ion batteries are strongly affected by the internal operating temperature. Thermal characterization of battery cells is very important to ensure the consistent operation of a Li-ion battery for its application. In the present study, the OHP (Oscillating Heat Pipe) system is proposed as a battery cooling module, and experimental verification was carried out. OHP is characterized by a long evaporator section, an extremely short condenser section, and almost no adiabatic section. Experimental investigations were conducted using various parameters such as the filling ratio, orientation, coolant temperature, and heat flux. Average temperature of the heater’s surface was maintained at 56.4 °C using 14 W with 25 °C coolant water. The experimental results show that the present cooling technology basically meets the design goal of consistent operation.

Optimized electron occupancy of solid-solution transition metals for suppressing the oxygen evolution of Li2MnO3

2021 ◽  
Vol 9 (14) ◽  
pp. 9337-9346
Author(s):  
Erhong Song ◽  
Yifan Hu ◽  
Ruguang Ma ◽  
Yining Li ◽  
Xiaolin Zhao ◽  
...  
Keyword(s):  
Solid Solution ◽  
Energy Density ◽  
Transition Metals ◽  
Oxygen Evolution ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Increasing Demand ◽  
Layered Cathodes

Li-rich layered cathodes based on Li2MnO3 have exhibited extraordinary promise to satisfy the rapidly increasing demand for high-energy density Li-ion batteries.

Novel low-cost, high-energy-density (>700 Wh kg−1) Li-rich organic cathodes for Li-ion batteries

2021 ◽  
Vol 415 ◽  
pp. 128509
Author(s):  
Qihang Yu ◽  
Wu Tang ◽  
Yang Hu ◽  
Jian Gao ◽  
Ming Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion
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