Studies on the degradation of Li-ion batteries by the use of microreference electrodes

Zhou, J Jiang; Notten, Phl Peter

doi:10.1016/j.jpowsour.2007.11.032

Cited by 53 publications

(32 citation statements)

References 23 publications

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“…The charge transfer resistance originates from the interface of electrolyte and electrodes, particularly the cathode side. [47][48][49][50][51][52] Passive layer growth and phase transitions on the cathode surface lead to a continuous increase of the charge transfer resistance. The massive charge transfer resistance increase at 10 • C may be a crucial cathode structural disordering, which will be verified in the following section by means of DVA and ICA.…”

Section: Resultsmentioning

confidence: 99%

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Keil

Schuster

et al. 2017

J. Electrochem. Soc.

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This paper presents a lithium-ion battery aging study in which pouch cells comprising a LiCoO 2 /LiNi 0.8 Co 0.15 Al 0.05 O 2 blended cathode and a graphite anode are examined. The study focuses on the impact of temperature and discharge rate on the cycle life of the tested cells. Compared to the aging behavior of other lithium-ion cells in the literature, the cells tested here are less sensitive to the discharge rate but more vulnerable to low temperature cycling. The vulnerability to low temperature mainly comes from cathode degradation, especially of the LiCoO 2 component. This is identified by electrochemical impedance spectroscopy, differential voltage analysis and incremental capacity analysis. The cells are able to achieve 3000-5000 cycles before reaching a capacity fade of 20%, also at higher discharge rates up to 5C. All in all, the high discharge rate capability could be a general advantage of pouch cells due to less mechanical and thermal stress in their geometry. Furthermore, more attention should be paid to the cathode health in low temperature applications of lithium-ion cells containing layered oxides. This paper focuses mainly on non-invasive aging detection methods for lithium-ion cells. Post-mortem results will be published in a following paper.

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Section: Resultsmentioning

confidence: 99%

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Keil

Schuster

et al. 2017

J. Electrochem. Soc.

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“…However, due to the small number of samples and the absence of strain gauges on the cells, it is difficult to make any definitive conclusions. In general, the source of the capacity fade observed in Li-ion cells has been attributed to various processes such as a loss of active material via phase change at the cathode, lithium deposition phenomenon and isolation of intercalated Li at the anode, leading to kinetically inaccessible lithium, loss of interparticle contact, transition metal dissolution at the cathode, and electrolyte degradation processes at both the cathode and the anode [17][18][19]. The latter processes may also lead to the formation of resistive surface films at both of the electrode interfacial regions, which contributes an increase in the cell impedance.…”

Section: Results Of Generic Performance Testing Of Prototype Cellsmentioning

confidence: 99%

Life verification of large capacity Yardney Li-ion cells and batteries in support of NASA missions

Smart

Ratnakumar

Whitcanack

et al. 2009

Int. J. Energy Res.

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SUMMARYLithium-ion batteries have been used on a number of NASA missions and have been base-lined for use on a number of up-coming aerospace applications. The Li-ion cells and batteries that have been developed together with Yardney Technical Products are especially attractive due to their high specific energy and energy density, good performance over a wide operating temperature range, as well as their good calendar and cycle life performance. However, given that the Li-ion technology is relatively new to the aerospace community and that mature, large capacity prototype cells have continued to evolve over the last 10 years, real-time performance test data is especially valuable in demonstrating the capabilities over a number of environmental and application specific conditions. For this reason, we have focused on performing a number of generic and mission specific performance life tests to establish the viability of the technology to meet current and future applications. In this work, we will describe the results of a number of generic cycle life tests, including 100% depth-of-discharge (DOD) cycling at various temperatures, partial DOD cycling simulating planetary orbiters and low earth orbit (LEO) satellite conditions, as well as partial DOD mission specific testing. We will also describe the results obtained from a number of calendar life tests where the cells were stored under different conditions, such as at different temperatures and different storage modes (i.e. open circuit voltage (OCV) conditions and storage under trickle charge conditions). Methods to quantify the capacity degradation and impedance growth of the batteries when subjected to different electrical and environmental conditions will be discussed, as well as, possible degradation mechanisms that can lead to reduced lifetime.

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“…12 This can cause significant intraparticle defect formation which may ultimately lead to fracture. Fracturing has been detected in many LIB electrodes [13][14][15][16][17][18][19][20][21][22] and can cause a loss of cell capacity as damaged particles lose contact with their current collector or undergo non-reversible reactions at freshly exposed fracture surface area. 27 Structural studies have shown the appearance of three distinct cubic spinel phases at around 4.75 V which\ correspond to the Ni þ2 , Ni þ3 , and Ni þ4 .…”

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confidence: 99%

Evolution of Phase Transformation Behavior in Li(Mn1.5Ni0.5)O4 Cathodes Studied By In Situ XRD

Rhodes

Meisner

Kim

et al. 2011

J. Electrochem. Soc.

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In situ X-ray diffraction of Li(Mn 1.5 Ni 0.5 )O 4 was performed using a novel electrochemical cell based on coin cell hardware. The pristine material had a cubic spinel structure with a Ni 2þ oxidation state. As the cell was charged through its 4.75V plateau, a transition between spinels with Ni 2þ , Ni 3þ , and Ni 4þ oxidation was observed. As the oxidation of the nickel increased, the lattice parameter of the corresponding spinel diminished. During discharge, the spinel reversed its phase changes until only the Ni 2þ spinel was observed. As the discharge potential reached a plateau at 2.75V a tetragonal spinel phase was formed, which upon subsequent cell charging was completely converted back to a cubic spinel phase. Lattice parameter changes of each phase were calculated and showed a characteristic strain release during phase changes. After 15 full cycles the transition between cubic spinels was no longer complete and the formation of the tetragonal spinel phase was no longer detected. This suggests a gradual change from an ordered to disordered MNO structure and lithium trapping in the active material. These cycle-induced changes to phase transition behavior can be related to capacity fade and overall cell performance.A global demand for portable, high power energy storage systems has made the development of improved lithium ion batteries (LIBs) an important research priority. 1 Consumer electronics, electrical vehicles, power grid regulation, and remote sensing applications all stand to benefit from LIBs with higher power, greater capacity, and longer life. To achieve this goal the structural behavior of the active electrode materials must be well understood at multiple levels from lattice, to particle, to composite. How the structure changes as the material is reversibly intercalated or alloyed with lithium as well as how the structure evolves over the course of many lithiation/delithiation cycles are important considerations in the design, development, and selection of active materials.Among current cathode materials for lithium ion batteries those based on the LiMn 2 O 4 spinel structure are advantageous in their nontoxicity, low cost, and ease of preparation. 2-7 The spinel structure of this material offers a 3D diffusion pathway for lithium intercalation/ deintercalation. Lithiation occurs reversibly as per the following reactionHowever, use of this material faces several challenges including somewhat limited rate capabilities, 8 dissolution of Mn 2þ ions into the electrolyte, 9,10 and a strong Jahn-Teller distortion at low potentials. 10-12 At low potentials the Mn 3þ /Mn 4þ redox couple produces Mn 3þ ions which may participate in the following disproportion reaction at the interface between the particle and the electrolyte 2Mn 3þ solid ! Mn 4þ solid þMn 2þ electrolyte At high degrees of lithiation, LiMn 2 O 4 will undergo a Jahn-Teller distortion that forces it from a cubic to tetragonal spinel structure as Li 2 Mn 2 O 4 is formed. 10-12 Any regions of material in this tetragonal phase, most likely ...

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Studies on the degradation of Li-ion batteries by the use of microreference electrodes

Cited by 53 publications

References 23 publications

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Life verification of large capacity Yardney Li-ion cells and batteries in support of NASA missions

Evolution of Phase Transformation Behavior in Li(Mn1.5Ni0.5)O4 Cathodes Studied By In Situ XRD

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Studies on the degradation of Li-ion batteries by the use of microreference electrodes

Cited by 53 publications

References 23 publications

Impact of Temperature and Discharge Rate on the Aging of a LiCoO2/LiNi0.8Co0.15Al0.05O2Lithium-Ion Pouch Cell

Impact of Temperature and Discharge Rate on the Aging of a LiCoO2/LiNi0.8Co0.15Al0.05O2Lithium-Ion Pouch Cell

Life verification of large capacity Yardney Li-ion cells and batteries in support of NASA missions

Evolution of Phase Transformation Behavior in Li(Mn1.5Ni0.5)O4 Cathodes Studied By In Situ XRD

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Product

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Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell