Unraveling the effects on lithium-ion cathode performance by cation doping M–Li2CuO2 solid solution samples (M = Mn, Fe and Ni)

2020 ◽  
Vol 49 (14) ◽  
pp. 4549-4558 ◽  
Author(s):  
M. A. Martínez-Cruz ◽  
A. Yañez-Aulestia ◽  
G. Ramos-Sánchez ◽  
M. Oliver-Tolentino ◽  
M. Vera ◽  
...  
Keyword(s):  
Solid Solution ◽  
Lithium Ion ◽  
Electrochemical Stability ◽  
Superexchange Interaction ◽  
Partial Substitution ◽  
Cation Doping ◽  
Copper Sites ◽  
Charge Discharge

Manganese partial substitution reveals a drastic improvement in the electrochemical stability of Li2CuO2 during the charge/discharge processes, this is attributed to the increase in the superexchange interaction between copper sites and manganese.

Voltage hysteresis of lithium ion batteries caused by mechanical stress

2016 ◽  
Vol 18 (6) ◽  
pp. 4721-4727 ◽  
Author(s):  
Bo Lu ◽  
Yicheng Song ◽  
Qinglin Zhang ◽  
Jie Pan ◽  
Yang-Tse Cheng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Mechanical Stress ◽  
Crucial Role ◽  
Lithium Ion ◽  
Voltage Hysteresis ◽  
Charge Discharge

The crucial role of mechanical stress in voltage hysteresis of lithium ion batteries in charge–discharge cycles is investigated theoretically and experimentally.

scholarly journals The Effects of Power Levels/Time Periods for Sputtering Cobalt onto Carbon Nanotubes/Graphene Composites and Cobalt Annealed on the Characteristics of Anode Materials for Lithium-Ion Batteries

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Chuen-Chang Lin ◽  
You-Lun Shen ◽  
An-Na Wu
Keyword(s):  
Carbon Nanotubes ◽  
Cobalt Oxide ◽  
Anode Materials ◽  
Specific Capacity ◽  
Rf Sputtering ◽  
Lithium Ion ◽  
Chemical Vapor ◽  
Electrochemical Stability ◽  
Time Period ◽  
Time Periods

Carbon nanotubes/graphene composites are directly grown on nickel foil without additional catalysts by chemical vapor deposition (CVD). Next, the cobalt is deposited on carbon nanotubes/graphene composites by radio frequency (RF) sputtering with different power levels and time periods. Then, the cobalt is transformed into cobalt oxide by annealing. A longer time period of sputtering leads to higher specific capacity. Furthermore, the electrochemical stability of cobalt oxide/carbon nanotubes/graphene composites is higher than that of cobalt oxide.

Electrochemical stability of optimized Si/C composites anode for lithium-ion batteries

Ionics ◽  
2014 ◽  
Vol 21 (2) ◽  
pp. 579-585 ◽  
Author(s):  
Jianping Wang ◽  
Chongyun Wang ◽  
Yuanmin Zhu ◽  
Ningning Wu ◽  
Wenhuai Tian
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Electrochemical Stability

Investigation on Structure and Electrochemical Properties of Li[Ni1/3Co1/3Mn1/3]O2 for Lithium Ion Batteries

2007 ◽  
Vol 336-338 ◽  
pp. 455-458
Author(s):  
Xiu Juan Shi ◽  
Yong Ping Zheng ◽  
Fei Yu Kang ◽  
Xin Lu Li ◽  
Wan Ci Shen
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Sol Gel ◽  
Lithium Ion ◽  
Hexagonal Structure ◽  
Oxidation States ◽  
Potential Range ◽  
Xps Analysis ◽  
Electrochemical Behaviors ◽  
Charge Discharge

Cathode material Li[Ni1/3Co1/3Mn1/3]O2 for lithium-ion batteries with layered hexagonal structure was successfully synthesized in sol-gel way. The influences of calcination temperature (from 700° to 1000°C) on the structure and electrochemical behaviors of Li[Ni1/3Co1/3Mn1/3]O2 were extensively investigated. The results of XRD show that all samples are isostructural with α-NaFeO2 with a space group R-3m. XPS analysis shows that the oxidation states of Co and Mn were Co3+ and Mn4+ respectively, while Ni exists as Ni2+ and Ni3+. The charge-discharge experiments show that the sample calcined at 850°C delivers 194.8mAh/g in the first cycle at C/5 rate in 2.5-4.3V potential range.

scholarly journals DEVELOPMENT OF CHARGING AND DISCHARGE SOFTWARE AND HARDWARE COMPLEX APPLICABLE FOR CHECKING BATTERIES OF SPACE VEHICLES

2020 ◽  
Vol 5 (5(74)) ◽  
pp. 67-71
Author(s):  
N.V. Suharev
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Space Vehicles ◽  
Electrical Characteristics ◽  
Software Complex ◽  
Advantages And Disadvantages ◽  
Fifth Generation ◽  
Hardware Complex ◽  
Software And Hardware ◽  
Charge Discharge

Problem statement: Currently, there is a need in the space industry to actively improve the characteristics of battery batteries, the use of new types of batteries for power supply systems of spacecraft leads to a constant demand to improve the control and verification equipment (CPA). Depending on the improvement of storage batteries (AB) for spacecraft, the requirements for electrical inspections and control and verificationequipment were gradually changed. With the advent of lithium-ion batteries for spacecraft, there was a need to develop and manufacture a charge-discharge hardware and software complex (ZRPAK). The charge-discharge hardware-software complex designed to work as a charger-bit complex to work with AB spacecraft for all ground operation phases, to verify compliance of the electrical characteristics of the AB to the specified requirements, conduct incoming inspection and Autonomous tests of AB on the manufacturer of the spacecraft. The advantages and disadvantages of the previously developed and currently used control and verification equipment are analyzed. The electrical characteristics of the KPA of all generations of development are summarized in the table. Based on the analysis of the development of batteries, trends in the development of control and verification equipment and the fact that all spacecraft of new developments will use only lithium-ion batteries, the requirements for a promising fifth-generation ZRPAK are formulated. The following requirements are applied to the fifth-generation charge-discharge software and hardware complex: increase the charge-discharge voltage to 150 V; increase the charge -discharge current to 150 A; introduce devices for pre-charge-pre-discharge of the battery into the KPA; increase the accuracy of measuring the voltage of each battery; provide remote operation from the control PC; writing cyclograms; logging and subsequent viewing of all test data

scholarly journals Enhancement of Y5−xPrxSb3−yMy (M = Sn, Pb) Electrodes for Lithium- and Sodium-Ion Batteries by Structure Disordering and CNTs Additives

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4331
Author(s):  
Volodymyr Pavlyuk ◽  
Wojciech Ciesielski ◽  
Nazar Pavlyuk ◽  
Damian Kulawik ◽  
Agnieszka Balińska ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Partial Substitution ◽  
Sodium Ion Batteries ◽  
Cycle Stability ◽  
High Entropy ◽  
Electrochemical Lithiation ◽  
Effective Additive ◽  
Structure Disordering

The maximally disordered (MD) phases with the general formula Y5−xPrxSb3−yMy (M = Sn, Pb) are formed with partial substitution of Y by Pr and Sb by Sn or Pb in the binary Y5Sb3 compound. During the electrochemical lithiation and sodiation, the formation of Y5-xPrxSb3-yMyLiz and Y5−xPrxSb3−yMyNaz maximally disordered–high entropy intermetallic phases (MD-HEIP), as the result of insertion of Li/Na into octahedral voids, were observed. Carbon nanotubes (CNT) are an effective additive to improve the cycle stability of the Y5−xPrxSb3−yMy (M = Sn, Pb) anodes for lithium-ion (LIBs) and sodium-ion batteries (SIBs). Modification of Y5−xPrxSb3−ySny alloys by carbon nanotubes allowed us to significantly increase the discharge capacity of both types of batteries, which reaches 280 mAh · g−1 (for LIBs) and 160 mAh · g−1 (for SIBs), respectively. For Y5−xPrxSb3−yPby alloys in which antimony is replaced by lead, these capacities are slightly smaller and are 270 mAh · g−1 (for LIBs) and 155 mAh · g−1 (for SIBs), respectively. Results show that structure disordering and CNT additives could increase the electrode capacities up to 30% for LIBs and up to 25% for SIBs.

Two-dimensional SnS2@PANI nanoplates with high capacity and excellent stability for lithium-ion batteries

2015 ◽  
Vol 3 (7) ◽  
pp. 3659-3666 ◽  
Author(s):  
Gang Wang ◽  
Jun Peng ◽  
Lili Zhang ◽  
Jun Zhang ◽  
Bin Dai ◽  
...  
Keyword(s):  
Electron Transport ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Two Dimensional ◽  
Volume Changes ◽  
Nanostructured Electrode ◽  
Charge Discharge ◽  
Excellent Stability

Nanostructured electrode materials have been extensively studied with the aim of enhancing lithium ion and electron transport and lowering the stress caused by their volume changes during the charge–discharge processes of electrodes in lithium-ion batteries.

Rapid Charge–Discharge Property of Li4Ti5O12–TiO2 Nanosheet and Nanotube Composites as Anode Material for Power Lithium-Ion Batteries

2014 ◽  
Vol 6 (22) ◽  
pp. 20205-20213 ◽  
Author(s):  
Ting-Feng Yi ◽  
Zi-Kui Fang ◽  
Ying Xie ◽  
Yan-Rong Zhu ◽  
Shuang-Yuan Yang
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Nanotube Composites ◽  
Charge Discharge
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