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Energy Storage Conversion Lab.



Performance and Life Degradation Characteristics Analysis of NCM LIB for BESS
Content type 2018
Title of paper Performance and Life Degradation Characteristics Analysis of NCM LIB for BESS
Author Soon-Jong Kwon, Sung-Eun Lee, Ji-Hun Lim , Jinhyeok Choi and Jonghoon Kim
Publications Electronics
Status of publication published
Vol 7
Link 관련링크 39회 연결

The battery energy storage system (BESS) market is growing rapidly around the world.

Lithium Nickel Cobalt Manganese Oxide (LiNiCoMnO2) is attracting attention due to its excellent

energy density, high output power, and fast response characteristics. It is being extensively researched

and is finding use in many applications, such as in electric vehicles (EV) and energy storage

systems (ESS). The performance and lifetime characteristics of a battery change for varying Ni

contents. The consideration of these characteristics of a battery allow for a more reliable battery

management system (BMS) design. In this study, various experiments and analyses were carried

out using a lithium-ion battery (NCM LIB) with differing Ni contents. In particular, the following

two combinations were studied: LiNi0.5Co0.2Mn0.3O2(NCM523) and LiNi0.6Co0.2Mn0.2O2 (NCM622).

Various analyses were performed, such as C-rate (C-rate is the charge-discharge rate of a battery

relative to nominal capacity) performance tests, hybrid pulse power characterization (HPPC),

accelerated deterioration experiments, electrochemical impedance spectroscopy (EIS), parameter

estimations of battery equivalent circuits through alternating current (AC) and direct current (DC)

impedance, and comparative analyses of battery modeling.