scholarly journals Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26102-26109
Author(s):  
Hongli Lu ◽  
Shuangwei Zeng ◽  
Dongni Zhao ◽  
Jie Wang ◽  
Yin Quan ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Simplex Method ◽  
Lithium Ion ◽  
Electrolyte System ◽  
Electrochemical Testing ◽  
Better Than

The manuscript addresses that the electrolyte system with five components was optimized by combining the simplex method, normalization and electrochemical testing in lithium-ion batteries. The optimized electrolyte is better than commercial electrolyte LiPF6–EC/DEC.

Single Crystalline V2O5 Nanowire/Graphene Composite as Cathode Material for Lithium-Ion Batteries

2013 ◽  
Vol 873 ◽  
pp. 575-580 ◽  
Author(s):  
Qing He ◽  
Dong Lin Zhao ◽  
Yang Yang Zhu ◽  
Jing Xing Zhang
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Graphene Nanosheets ◽  
Synthesis Method ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycle Performance ◽  
Single Crystalline ◽  
Electrochemical Testing ◽  
Transmission Electron

The single crystalline V2O5nanowire/graphene nanosheets (GNS) composite has been successfully prepared via an easy and facile one-step hydrothermal synthesis method. The morphology, structure and electrochemical performance of V2O5nanowire/GNS composite as cathode material for lithium-ion batteries were systematically investigated by transmission electron microscope, X-ray diffraction and a variety of electrochemical testing techniques. The V2O5single crystalline nanowires were supported on the GNS substrate and exhibited excellent electrochemical properties. When used as a cathode material of lithium-ion batteries, the composite material revealed high initial discharge capacities and exceptional rate capacities. It was found that V2O5nanowire/GNS composite exhibited a relatively high reversible capacity of 357 mA h g-1and fine cycle performance.

Effect of Lithium Difluoro(oxalato)Borate-Based Electrolyte on the Performance of LiNi0.5Mn1.5O4 for High-Voltage Lithium-Ion Batteries

2013 ◽  
Vol 842 ◽  
pp. 3-6
Author(s):  
Xiao Peng Li ◽  
Xiao Ling Cui ◽  
Man Yun Wang ◽  
Xiu Xiu Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Discharge Voltage ◽  
Cycle Performance ◽  
Electrochemical Performances ◽  
Electrolyte System ◽  
Oxidation Potentials ◽  
Voltage Plateau

LiNi0.5Mn1.5O4is a promising 5 V class anode material for high power applications; however, before applying in lithium-ion batteries, it is necessary to find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiNi0.5Mn1.5O4. In this paper, the electrochemical performances of lithium difluoro (oxalato) borate (LiODFB)-sulfolane (SL)/dimethyl carbonate (DMC) electrolyte are investigated. It shows high oxidation potentials (>5.4 V) and satisfactory conductivities. When used in LiNi0.5Mn1.5O4/Li cells, compared to the cell with the electrolyte system of LiPF6-ethylene carbonate/DMC, LiODFB-SL/DMC electrolyte exhibits more stable cycle performance and higher discharge voltage plateau (>4.64 V).

Study of Synthesis and Properties of Spinel LiNi0.4Mn1.5Cr0.1O4 as Cathode for Lithium Ion Batteries

2010 ◽  
Vol 160-162 ◽  
pp. 513-517
Author(s):  
Guo Qiang Liu ◽  
Guang Yin Liu ◽  
Xiao Yan Shi
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Reaction Temperature ◽  
Electrochemical Property ◽  
Lithium Ion ◽  
Optimum Temperature ◽  
Capacity Retention ◽  
Better Than

Spinel compound LiNi0.4Mn1.5Cr0.1O4 was synthesized at different reaction temperature. The optimum temperature was 900 0C. The product exhibited good electrochemical properties. It delivered capacity of 128.2, 124.1 and 116.8 mAh g-1 at 0.2, 0.5 and 1C, respectively. The capacity retention was 98%, 99% and 99% after 30 cycles, respectively. The electrochemical property of compound LiNi0.4Mn1.5Cr0.1O4 was better than that of LiNi0.5Mn1.5O4.

scholarly journals Phosphorus-doped silicon nanorod anodes for high power lithium-ion batteries

2017 ◽  
Vol 8 ◽  
pp. 222-228 ◽  
Author(s):  
Chao Yan ◽  
Qianru Liu ◽  
Jianzhi Gao ◽  
Zhibo Yang ◽  
Deyan He
Keyword(s):  
Lithium Ion Batteries ◽  
High Power ◽  
Lithium Ion ◽  
Doped Silicon ◽  
Si Anode ◽  
Phosphorus Doped ◽  
A Current ◽  
Cuo Nanorods ◽  
Better Than

Heavy-phosphorus-doped silicon anodes were fabricated on CuO nanorods for application in high power lithium-ion batteries. Since the conductivity of lithiated CuO is significantly better than that of CuO, after the first discharge, the voltage cut-off window was then set to the range covering only the discharge–charge range of Si. Thus, the CuO core was in situ lithiated and acts merely as the electronic conductor in the following cycles. The Si anode presented herein exhibited a capacity of 990 mAh/g at the rate of 9 A/g after 100 cycles. The anode also presented a stable rate performance even at a current density as high as 20 A/g.

scholarly journals Self-Polymerized Dopamine Nanoparticles Modified Separators for Improving Electrochemical Performance and Enhancing Mechanical Strength of Lithium-Ion Batteries

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 648 ◽  
Author(s):  
Wenqian Hao ◽  
Dechong Kong ◽  
Jiamiao Xie ◽  
Yaping Chen ◽  
Jian Ding ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Mechanical Strength ◽  
Lithium Ion Batteries ◽  
Ionic Conductivities ◽  
Lithium Ion ◽  
Thermal Shrinkage ◽  
Thermal Stabilities ◽  
Electrochemical Testing ◽  
Adhesion Ability ◽  
Electrolyte Uptake

Separators in lithium-ion batteries (LIBs) play an important role for battery safety, so stable electrochemical performance and high mechanical strength of separators will always be of interest. On the basis of the fact that polydopamine (PDA) nanoparticles found in mussel have a strong adhesion ability, biomaterial surface nanoparticles modification methods are developed to increase electrochemical performance and enhance mechanical strength of polypropylene (PP) and polypropylene/polyethylene/polypropylene (PP/PE/PP) separators. The electrolyte uptake performance, ionic conductivities, discharging rate capabilities, yield stresses, and failure strains of PP and PP/PE/PP separators are all enhanced remarkably by PDA modification. Thermal shrinkage results show that thermal stabilities and the shrinkage percentage of PDA-modified separators are improved. The electrochemical testing results conclude that the discharging capacities of PP (increased by 3.77%~187.57%) and PP/PE/PP (increased by 2.31%~92.21%) separators increase remarkably from 0.1 C to 5.0 C. The ionic conductivities of PDA-modified PP and PP/PE/PP separators are 1.5 times and 6.1 times higher than that of unmodified PP and PP/PE/PP separators, which in turn increase the electrolyte uptake and ionic migration. In addition, mechanical properties of PP (yield stresses: 17.48%~100.11%; failure stresses: 13.45%~82.71%; failure strains: 4.08%~303.13%) and PP/PE/PP (yield stresses: 11.77%~296.00%; failure stresses: 12.50%~248.30%; failure strains: 16.53%~32.56%) separators are increased greatly.

Effect of Lithium Bis(oxalate)Borate-Based Electrolyte on the Performance of LiNi0.5Mn1.5O4 for High Voltage Lithium-Ion Batteries

2012 ◽  
Vol 519 ◽  
pp. 156-159 ◽  
Author(s):  
Shi You Li ◽  
Yang Yu Zhao ◽  
Wei Zhao ◽  
Xiao Ling Cui
Keyword(s):  
Lithium Ion Batteries ◽  
Dimethyl Carbonate ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Discharge Voltage ◽  
Cycle Performance ◽  
Electrochemical Performances ◽  
Electrolyte System ◽  
Oxidation Potentials ◽  
Voltage Plateau

LiNi0.5Mn1.5O4 is a promising 5 V class anode material for high power applications, however, before applying in lithium-ion batteries, it is necessary to find more appropriate electrolyte systems to exert the perfect electrochemical performance of LiNi0.5Mn1.5O4. In this paper, the electrochemical performances of LiBOB-propylene carbonate (PC)/dimethyl carbonate (DMC) electrolyte are investigated. It shows high oxidation potentials (>5.5 V) and satisfactory conductivities, When used in LiNi0.5Mn1.5O4/Li cells, compared to the cell with the electrolyte system of LiPF6-ethylene carbonate (EC)/dimethyl carbonate (DMC) electrolyte, LiBOB-PC/DMC electrolyte exhibit several advantages, such as more stable cycle performance, higher discharge voltage plateau (>4.64 V), higher coulomb efficiency, and higher mean voltage (4.55 V).

TixSn1-xO3 Solid Solution Nanoparticles as Anode Material for Lithium-Ion Batteries

2013 ◽  
Vol 873 ◽  
pp. 587-591
Author(s):  
Jing Xing Zhang ◽  
Dong Lin Zhao ◽  
Yang Yang Zhu ◽  
Qing He
Keyword(s):  
Solid Solution ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Hydrothermal Process ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycle Performance ◽  
Electrochemical Testing ◽  
Transmission Electron

TixSn1-xO3solid solution nanoparticles have been successfully prepared via a hydrothermal process. The morphology and structure of TiO2, SnO2and TixSn1-xO3solid solution nanoparticles were investigated by scanning electron microscopy, transmission electron microscope and X-ray diffraction measurements. The electrochemical performance of TiO2, SnO2and TixSn1-xO3solid solution nanoparticles as anode material for lithium-ion batteries were systematically investigated by a variety of electrochemical testing techniques. The TixSn1-xO3solid solution nanoparticles showed not only higher specific capacity of 401.3 mA h·g1after 50 cycles but also better cycle performance, superior than the pure SnO2electrode, which can be ascribed to the stable cyclability of TiO2and the high reversible capacity of nanosized SnO2.

CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries

2021 ◽  
Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Low Cost ◽  
High Capacity ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.

Synthesis and study of carbon nanostructured additives for lithium-ion batteries

2018 ◽  
Vol 125 (4) ◽  
pp. 8-13
Author(s):  
А.Б. Абдрахманова ◽  
◽  
В. А. Кривченко ◽  
Н. М. Омарова
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion
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