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Full-Text Articles in Physical Sciences and Mathematics
Structural And Dynamic Studies Of Spinel Lini0.5Mn1.5O4Cathode Material During Initial Charge/Discharge Processes, Qin Wang, Li-Li Zhou, Chong-Heng Shen, Qi Wang, Ling Huang, Jun-Tao Li, Shi-Gang Sun
Structural And Dynamic Studies Of Spinel Lini0.5Mn1.5O4Cathode Material During Initial Charge/Discharge Processes, Qin Wang, Li-Li Zhou, Chong-Heng Shen, Qi Wang, Ling Huang, Jun-Tao Li, Shi-Gang Sun
Journal of Electrochemistry
The spinel LiNi0.5Mn1.5O4 material was synthesized by co-precipitation method with NaOH as a precipitant. The structure and morphology of the as-prepared LiNi0.5Mn1.5O4 materials were characterized by means of XRD、FTIR and SEM. The results indicated that the material belonged to space group and consisted of octahedral particles with the sizes of 3 ~ 6 μm. Electrochemical tests showed the first discharge specific capacity of 121.5 mAh·g-1 at 0.1C. After 150 cycles, about 99% of reversible capacity was retained for the LiNi0.5Mn1.5O4 material. A combining potentiostatic …
Sodium Difluoro(Oxalato)Borate As An Electrolyte Additive To Improve The Electrochemical Performance Of Graphite Anode, Yang-Yang Yao, Dong-Dong Liu, Li Wang, Xiang-Ming He, Jian-Jun Li, Ding Zhang
Sodium Difluoro(Oxalato)Borate As An Electrolyte Additive To Improve The Electrochemical Performance Of Graphite Anode, Yang-Yang Yao, Dong-Dong Liu, Li Wang, Xiang-Ming He, Jian-Jun Li, Ding Zhang
Journal of Electrochemistry
The fast development in applications of Li-ion batteries (LiBs) in daily life urges for better electrochemical performance of LiBs, which can be promoted by adding appropriate electrolyte additives. This work studied the effect of NaDFOB as the additive on a common electrolyte formula (1 mol·L-1 LiPF6 in EC+DMC+EMC, 1:1:1 by volume). Analysis methods such as CV, EIS and SEM were adopted to study electrochemical performance of experimental battery and interface profiles. It was revealed that the reversible charge-discharge capacity and cycling performance of graphite anode had been dramatically improved. In addition, the cycling performance of graphite anode at …
Research Progress Of Mn-Based Lithium-Rich Cathode Materials For Li-Ion Batteries, Luo-Zeng Zhou, Qun-Jie Xu, Wei-Ping Tang, Xue Jin, Xiao-Lei Yuan
Research Progress Of Mn-Based Lithium-Rich Cathode Materials For Li-Ion Batteries, Luo-Zeng Zhou, Qun-Jie Xu, Wei-Ping Tang, Xue Jin, Xiao-Lei Yuan
Journal of Electrochemistry
With rapid development of new energy industry like electric vehicles and energy storage station, these fields highly demand the next generation of high performance Li-ion battery systems with stronger energy density, higher power density, and longer cycling life. Lithium-rich Mn-based cathode materials, xLi2MnO3·(1-x)LiMO2(M=Mn, Co, Ni...), have become the hot topic and drawn attentions of scholars worldwide because of their high reversible capacity exceeding 240 mAh·g-1, excellent electrochemical properties, and low cost, which makes them most promising cathode material candidates for next Li-ion battery system. The cathode material Li[Li0.2Mn0.54Ni …