In situ electrochemical surface modification for high-voltage LiCoO2 in lithium ion batteries

Lim, Jungwoo; Choi, An-Seop; Kim, Hanseul; Doo, Sung Wook; Park, Yuwon; Lee, Kyu‐Tae

doi:10.1016/j.jpowsour.2019.04.011

Cited by 32 publications

(25 citation statements)

References 49 publications

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“…Despite this, the deviation in peak positions is typically limited to 20 mV compared to literature on charge and less than 5 mV on discharge. Table shows battery properties extracted for each of the test materials in a single combinatorial cell (32 samples of each) along with those obtained from literature under similar cycling conditions. − The average specific capacities were within 2.6% of that obtained for bulk samples, while the average voltages were within 1.5%. This demonstrates a high level of precision in the combinatorial measurements.…”

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confidence: 78%

Accelerated Screening of High-Energy Lithium-Ion Battery Cathodes

Potts

Grignon

McCalla

2019

ACS Appl. Energy Mater.

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The need for better battery materials has driven research into underexplored complex phase spaces. Herein, we perform the first high-throughput electrochemical study of the entire Li–Ni–Mn–O system of interest for next-generation high-energy cathodes. We first adapt a high-throughput electrochemical system to cycle 64 mg-scale cathodes simultaneously and demonstrate its effectiveness with two test materials: LiCoO2 and Li[Ni1/3Mn1/3Co1/3]O2. The average values for the electrochemical properties obtained for the combinatorial samples show excellent agreement with literature, and cell-to-cell reproducibility is about 7%. The results for the Li–Ni–Mn–O system deepens our understanding dramatically and will guide the rational design of high-energy cathodes.

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confidence: 78%

Accelerated Screening of High-Energy Lithium-Ion Battery Cathodes

Potts

Grignon

McCalla

2019

ACS Appl. Energy Mater.

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“…In particular, LiCoO 2 (LCO) with a high working voltage and its transition metal oxide successors such as LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) and LiNi x Mn y Co z O 2 (NMC xyz , where x + y + z = 1) coupled with carbon anodes had been shown to be incredibly successful. [195][196][197][198][199] However, there was still the limitation to improving the energy density levels of Li-ion batteries using a graphite anode. [200] For example, most pure EV use Li-ion batteries based on an NMC cathode and graphite anode, and can run only a maximum of 300 miles on a single charge, even though the battery is more than a quarter of the vehicle weight.…”

Section: Metal Anodes With High-capacity Cathode Materials For LI mentioning

confidence: 99%

Lithium Metal Interface Modification for High‐Energy Batteries: Approaches and Characterization

Lee

Song

Cho

et al. 2020

Batteries & Supercaps

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Rechargeable batteries have been a profoundly greater part of our lives than we could have ever imagined. The rechargeable Li‐ion batteries (LIBs) that have been developed for transport systems even put fossil fuels in the corner. However, state‐of‐the‐art Li‐ion batteries with graphite anodes are now approaching their theoretical specific energy limits, so they cannot meet the increasing demands of a range of portable electronics and large‐scale energy storage systems. Li metal is one of the most promising anode materials that could break through the energy density bottleneck of Li‐ion batteries due to its ultrahigh specific capacity and very low potential compared to other anode materials. Nonetheless, the direct use of Li metal in commercial battery systems has been hindered due to significant obstacles associated with it such as safety issues, corrosion from chemical reactions that occur inside the battery, or poor cycling performance. The fundamental reason for these problems is the dendritic growth of Li‐ions on the Li metal anode during cycling, as a result of the interfacial phenomena of Li metal and electrolytes. Modification of the Li metal interface with an electrolyte presents an efficient solution to solve these problems. In this review, the current challenges facing the development of Li metal anodes are presented in detail. The most recent advances in Li metal anodes using a controlled interface between the Li metal surface and an electrolyte are highlighted and an introduction on the synthesis and production methods for the application of high‐energy‐density battery systems such as Li‐oxygen (Li−O2), Li‐sulfur (Li−S), and Li metal batteries with high‐energy density cathodes is presented. Furthermore, the recent developments in the in situ/operando analysis tools adopted for the investigation of Li metal anodes such as the structural and chemical changes, dynamic properties, and solid–electrolyte interface (SEI) layer properties are described and summarized. Finally, some suggestions are given in the direction of the development of Li metal with artificial surface layers for use in future high‐energy batteries.

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“…Aging and lifespan depend on the LIB type [38][39][40][41]. The most common LIBs are lithium cobalt oxide (LCO) with a LiCoO 2 cathode and a graphite anode, lithium manganese oxide (LMO) with a LiMn 2 O 4 cathode and a graphite anode, lithium nickel manganese cobalt oxide (NMC) with a LiNiMnCoO 2 cathode and a graphite anode, lithium iron phosphate (LFP) with a LiFePO 4 cathode and a graphite anode, lithium nickel cobalt aluminum oxide (NCA) with a LiNiCoAlO 2 cathode and a graphite anode, and lithium titanate (LTO) with a LMO or NMC cathode and a Li 2 TiO 3 anode.…”

Section: Mathematical Modelmentioning

confidence: 99%

Modeling the Effect of the Loss of Cyclable Lithium on the Performance Degradation of a Lithium-Ion Battery

et al. 2019

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This paper reports a modeling methodology to predict the effect of the loss of cyclable lithium of a lithium-ion battery (LIB) cell comprised of a LiNi0.6Co0.2Mn0.2O2 cathode, natural graphite anode, and an organic electrolyte on the discharge behavior. A one-dimensional model based on a finite element method is presented to calculate the discharge behaviors of an LIB cell during galvanostatic discharge for various levels of the loss of cyclable lithium. Modeling results for the variation of the cell voltage of the LIB cell are compared with experimental measurements during galvanostatic discharge at various discharge rates for three different levels of the loss of cyclable lithium to validate the model. The calculation results obtained from the model are in good agreement with the experimental measurements. On the basis of the validated modeling approach, the effects of the loss of cyclable lithium on the discharge capacity and available discharge power of the LIB cell are estimated. The modeling results exhibit strong dependencies of the discharge behavior of an LIB cell on the discharge C-rate and the loss of cyclable lithium.

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In situ electrochemical surface modification for high-voltage LiCoO2 in lithium ion batteries

Cited by 32 publications

References 49 publications

Accelerated Screening of High-Energy Lithium-Ion Battery Cathodes

Accelerated Screening of High-Energy Lithium-Ion Battery Cathodes

Lithium Metal Interface Modification for High‐Energy Batteries: Approaches and Characterization

Modeling the Effect of the Loss of Cyclable Lithium on the Performance Degradation of a Lithium-Ion Battery

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