scholarly journals Battery Capacity Fading Estimation Using a Force-Based Incremental Capacity Analysis

2016 ◽  
Vol 163 (8) ◽  
pp. A1584-A1594 ◽  
Author(s):  
Nassim A. Samad ◽  
Youngki Kim ◽  
Jason B. Siegel ◽  
Anna G. Stefanopoulou
Keyword(s):  
Capacity Analysis ◽  
Capacity Fading ◽  
Battery Capacity ◽  
Incremental Capacity ◽  
Fading Estimation

scholarly journals Battery Capacity Estimation Based on Incremental Capacity Analysis Considering Charging Current Rate

2021 ◽  
Vol 12 (4) ◽  
pp. 224
Author(s):  
Yiran Lin ◽  
Bo Jiang ◽  
Haifeng Dai
Keyword(s):  
Estimation Method ◽  
Data Driven ◽  
Capacity Analysis ◽  
Mechanism Analysis ◽  
Capacity Estimation ◽  
Fitting Method ◽  
Battery Capacity ◽  
Charging Current ◽  
Incremental Capacity ◽  
The Relationship

Incremental capacity analysis (ICA) is widely used in the battery decay mechanism analysis since the features of battery incremental capacity (IC) curves are closely related to battery aging and maximum available capacity. However, the traditional ICA method to estimate battery capacity mainly focuses on a single charging condition, and the influence of charging current on IC curves is ignored. In this paper, an adaptive capacity estimation method based on ICA considering the charging current is established. First, the charging experiments using different charging current rates under different battery aging statuses are designed and conducted. Then, the relationship between battery maximum available capacity, IC curve features, and charging current is investigated. Furthermore, the fitting method and data-driven method considering charging current are proposed and compared. Finally, the capacity estimation results prove the accuracy and adaptability of the proposed method.

Overlithiation of LiNi0.8Co0.2O2 for Increased Performance in Li-Ion Batteries

2014 ◽  
Vol 938 ◽  
pp. 253-256
Author(s):  
Hashlina Rusdi ◽  
Norlida Kamarulzaman ◽  
Rusdi Roshidah ◽  
Kelimah Elong ◽  
Abd Rahman Azilah
Keyword(s):  
Cathode Materials ◽  
Structural Instability ◽  
Cation Ordering ◽  
Capacity Fading ◽  
Capacity Retention ◽  
Battery Capacity ◽  
Li Ion ◽  
Battery Application ◽  
Charge Discharge ◽  
Better Than

Layered LiNi1-xCoxO2 is one of the promising cathode materials for Li-ion battery application. However, the Ni rich cathode materials exhibit low capacity and bad capacity retention. This is due to factors such as disorder and structural instability when Li is removed during charge-discharge. Overlithiation of cathode materials is expected to improve the cation ordering and structural stability. Good cation ordering will increase the battery capacity. During charge-discharge, the irreversible Li+ loss can be replaced to a certain extent by the interstitial Li+ ions in the lattice of the LixNi0.8Co0.2O2 material. This helps reduce capacity fading of the cathode materials. In this work the overlithiation of LiNi0.8Co0.2O2 is done by interstitially doping Li+ in the LiNi0.8Co0.2O2 materials producing Li1.05Ni0.8Co0.2O2 and Li1.1Ni0.8Co0.2O2. Results showthat the performance of the overlithiated LiNi0.8Co0.2O2 materials is better than pure LiNi0.8Co0.2O2.

Sign in / Sign up

Export Citation Format

Share Document