The origin of impedance rise in Ni-Rich positive electrodes for lithium-ion batteries
نویسندگان
چکیده
The cycling performance of nickel-rich lithium nickel cobalt manganese oxide (NMC) electrodes in Li-ion batteries (LIBs) partially depends on the control kinetics degradation processes that result impedance rise. contribution from surface film formation at NMC/electrolyte interfaces is highly dependent initial chemical composition and structure NMC surfaces. Through comparison quantity electrochemical composite made pristine- treated-NMC materials, we are able to demonstrate a simple treatment suppressed subsequent reduced rise Li/NMC half-cells during cycling. Detailed modelling factors affecting cell provide further insights index individual interphase resistance, highlighting underlying positive effects proposed treatment, demonstrating importance homogeneous, electronically conducting matrices throughout electrode.
منابع مشابه
Nanostructured Lithium-Aluminum Alloy Electrodes for Lithium-Ion Batteries
Electrodeposited aluminum films and template-synthesized aluminum nanorods are examined as negative electrodes for lithium-ion batteries. The lithium-aluminum alloying reaction is observed electrochemically with cyclic voltammetry and galvanostatic cycling in lithium half-cells. The electrodeposition reaction is shown to have high faradaic efficiency, and electrodeposited aluminum films reach t...
متن کاملAn Effective Nitrogen Doping Technique for Improving the Performance of Lithium Ion Batteries with CNT Based Electrodes
Lithium ion batteries are among the most used rechargeable batteries in the world. Carbon nanostructures including carbon nanotubes (CNTs) are considered as important electrode materials for this kind of batteries. Therefore improving the performance of these carbon based electrodes in Lithium ion batteries is an important issue and attracts much attention in the battery community. In this manu...
متن کاملKinetic characteristics of mixed conductive electrodes for lithium ion batteries
The rate performances of four mixed conductive electrodes (Li4/3Ti5/3O4, LiFePO4, LiCoO2 and LiCo1/3Ni1/3Mn1/3O2) were investigated using alvanostatic charge/discharge, electrochemical impedance Spectroscopy (EIS) and galvanostatic intermittent titration (GITT). These four electrode aterials can be roughly divided into two groups according to the structure change during Li intercalation/extract...
متن کاملSolvent-Free Manufacturing of Electrodes for Lithium-ion Batteries
Lithium ion battery electrodes were manufactured using a new, completely dry powder painting process. The solvents used for conventional slurry-cast electrodes have been completely removed. Thermal activation time has been greatly reduced due to the time and resource demanding solvent evaporation process needed with slurry-cast electrode manufacturing being replaced by a hot rolling process. It...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Power Sources
سال: 2021
ISSN: ['1873-2755', '0378-7753']
DOI: https://doi.org/10.1016/j.jpowsour.2021.229885