Dual-Functional Cathodic Prelithiation Reagent of Li3P in Lithium-Ion Battery for Compensating Initial Capacity Loss and Enhancing Safety

2021 ◽  
Author(s):  
Xiaoyi Wang ◽  
Cheng Liu ◽  
Shaojie Zhang ◽  
Haipeng Wang ◽  
Ruying Wang ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Dual Functional ◽  
Capacity Loss ◽  
Initial Capacity

scholarly journals Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery

Batteries ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 57 ◽  
Author(s):  
Seyed Madani ◽  
Erik Schaltz ◽  
Søren Knudsen Kær
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Degradation Behavior ◽  
Battery Cell ◽  
The Third ◽  
Capacity Loss ◽  
Battery Cells

The determination of coulombic efficiency of the lithium-ion batteries can contribute to comprehend better their degradation behavior. In this research, the coulombic efficiency and capacity loss of three lithium-ion batteries at different current rates (C) were investigated. Two new battery cells were discharged and charged at 0.4 C and 0.8 C for twenty times to monitor the variations in the aging and coulombic efficiency of the battery cell. In addition, prior cycling was applied to the third battery cell which consist of charging and discharging with 0.2 C, 0.4 C, 0.6 C, and 0.8 C current rates and each of them twenty times. The coulombic efficiency of the new battery cells was compared with the cycled one. The experiments demonstrated that approximately all the charge that was stored in the battery cell was extracted out of the battery cell, even at the bigger charging and discharging currents. The average capacity loss rates for discharge and charge during 0.8 C were approximately 0.44% and 0.45% per cycle, correspondingly.

scholarly journals A Diffusion Model in a Two-Phase Interfacial Zone for Nanoscale Lithium-Ion Battery Materials

2012 ◽  
Author(s):  
Cheng-Kai ChiuHuang ◽  
Hsiao-Ying Shadow Huang
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Electric Vehicle ◽  
Cathode Materials ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Capacity Loss ◽  
Induced Stress ◽  
Stress Formation ◽  
Diffusion Induced Stress

The development of lithium-ion batteries plays an important role to stimulate electric vehicle (EV) and plug-in electric vehicle (PHEV) industries and it is one of many solutions to reduce US oil import dependence. To develop advanced vehicle technologies that use energy more efficiently, retaining the lithium-ion battery capacity is one of major challenges facing by the electrochemical community today. During electrochemical processes, lithium ions diffuse from and insert into nanoscaled cathode materials in which stresses are formed. It is considered that diffusion-induced stress is one of the factors causing electrode material capacity loss and failure. In this study, we present a model which is capable for describing diffusion mechanisms and stress formation in nano-platelike cathode materials, LiFePO4 (Lithium-iron-phosphate). We consider particle size >100 nm in this study since it has been suggested that very small nanoparticles (<100 nm) may not undergo phase separation during fast diffusion. To evaluate diffusion-induced stress accurately, factors such as the diffusivity and phase boundary movements are considered. Our result provides quantitative lithium concentrations inside LiFePO4 nanoparticles. The result could be used for evaluating stress formation and provides potential cues for precursors of capacity loss in lithium-ion batteries. This study contributes to the fundamental understanding of lithium ion diffusion in electrode materials, and results from this model help better electrode materials design in lithium-ion batteries.

A Prelithiation Separator for Compensating the Initial Capacity Loss of Lithium-Ion Batteries

2021 ◽  
Author(s):  
Zhixiang Rao ◽  
Jingyi Wu ◽  
Bin He ◽  
Weilun Chen ◽  
Hua Wang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Capacity Loss ◽  
Initial Capacity

scholarly journals A new strategy to mitigate the initial capacity loss of lithium ion batteries

2016 ◽  
Vol 324 ◽  
pp. 150-157 ◽  
Author(s):  
Xin Su ◽  
Chikai Lin ◽  
Xiaoping Wang ◽  
Victor A. Maroni ◽  
Yang Ren ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Capacity Loss ◽  
New Strategy ◽  
Initial Capacity

Fractional‐order modeling and SOC estimation of lithium‐ion battery considering capacity loss

2018 ◽  
Vol 43 (1) ◽  
pp. 417-429 ◽  
Author(s):  
Shuxian Li ◽  
Minghui Hu ◽  
Yunxiao Li ◽  
Changchao Gong
Keyword(s):  
Lithium Ion Battery ◽  
Fractional Order ◽  
Lithium Ion ◽  
Soc Estimation ◽  
Capacity Loss

Physical and Electrochemical Properties of a Mixed Lithium Phosphate as Cathode Material for Lithium Ion Battery

2012 ◽  
Vol 535-537 ◽  
pp. 2083-2086
Author(s):  
Hui Xie ◽  
Jian Zhuang Liu
Keyword(s):  
Cathode Material ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
High Rate ◽  
Electrochemical Performances ◽  
X Ray Diffraction ◽  
Lithium Phosphate ◽  
Electrochemical Tests ◽  
Capacity Loss ◽  
Electrochemical Capacity

A mixed lithium phosphate LiMn0.6Fe0.4PO4 as cathode material for lithium ion battery was synthesized by solid-state reaction. The crystalline structure, morphology of particles and electrochemical performances of the sample were investigated by X-ray diffraction, scanning electron microscopy, charge-discharge test and cyclic voltammetry. The results show that the small LiMn0.6Fe0.4PO4 particles are simple pure olive-type phase structure with uniformly distribution of gain size. The LiMn0.6Fe0.4PO4 obtained has a high electrochemical capacity, good cycle ability and excellent stability under high temperature. However, the capacity loss corresponding to 4.0V plateau at high rate, which had been proved by various electrochemical tests, is the main obstacle to its practical application.

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