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Cathode For Lithium Ion Battery - Astrophysics Data System

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Last Updated: 28 July 2022

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Atomic scale evolution of the surface chemistry in Li[Ni,Mn,Co]O2 cathode for Li-ion batteries stored in air

Here we used atom probe tomography and probed the surface species formed during exposure to air of a LiNi0. 8Mn0. 1O2 cathode material. To investigate the evolution of the surface composition at the atomic scale, we use here. The most frequent presence of Li2CO3 appears in a cracked region of an NMC811 particle, as shown by a site specific examination.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220711979S/abstract


One-Pot Synthesis of LiFePO4/N-Doped C Composite Cathodes for Li-ion Batteries

The LiFePO4 nanocrystals were manufactured in the form of pyridinic N and graphitic N, resulting in a maximum particle size of 143 nm for the LiFePO4/N-doped C in the form of pyridinic N and graphitic N. The LiFePO4/N-doped C was limited to 143 nm, resulting in a minimum particle size of 143 mAhu00b7 mAh nte atoms g/N-doper u00b7gu22121 mAh u00b7 117 n-doeogu22121 mAhu22121 n-dot, u00b7 u00b7gu00b7g n-doped C's, n-doped C, with 61121 172121 baudoo19121 172121 122121 u22121 121 115. 122121 166 On the improvement of the electrochemical quality of the LiFePO4/C cathode, the electrochemical test results showed a synergistic effect between N-doping and core-u2013shell structure, as illustrated by the electrochemical test results.

Source link: https://ui.adsabs.harvard.edu/abs/2022Mate...15.4738Z/abstract


Modelling the Impedance Response of Graded LiFePO 4 Cathodes for Li-Ion Batteries

Graded electrodes for Li-ion batteries are designed to enhance battery performance by controlled local electrode microstructures, such as reduced degradation rates and increased capacity at high discharge rates. A region locally enriched with carbon at the electrode/current collector interface is shown to significantly reduce overpotential distribution along the thickness of a LiFePO 4 -based Li-ion battery cathode, resulting in reduced charge transfer resistance and impedance. The results from LiFePO 4 -based electrodes' findings are generalized to wider design guidelines for both uniform and graded Li-ion battery electrodes.

Source link: https://ui.adsabs.harvard.edu/abs/2022JElS..169a0528D/abstract


Ni-O-redox, oxygen loss and singlet oxygen formation in LiNiO$_2$ cathodes for Li-ion batteries

LiNiO _2 lithium-ion batteries achieve high voltages in Li-ion batteries, but are vulnerable to structural instability and oxygen loss. The source of the instability, according to We find that the source of the dis-ease was found in the pronounced oxidation of O during delithiation, i. e. , a central role of O in Ni-O 3 eV.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220510462G/abstract


Understanding Low Temperature Limitations of LiNi 0.5 Co 0.2 Mn 0.3 O 2 Cathodes for Li-Ion Batteries

A significant drawback of today's Li-ion batteries is inability at low temperatures, which reduces user-friendliness and ultimately market expansion of electromobility. As a result, the source of the performance limitations at low temperatures is also uncertain and not completely clarified to date. A LiNi 0. 75 Mn 0. 3 O 2 -based cathode is an example. We herein present a comprehensive review of the stability at low temperatures using a LiNi 0. 5 Mn 0. 3 O 2 -based cathode as an example. To quantify the C-rate and SOC dependence of the individual overpotential phenomena, complementary electrochemical techniques are used. However, the present research isn't limited to determining the electrode reaction's low temperature limits of the system tested, but also shows how the rate-determining step of the electrode reaction can be efficiently identified as a function of temperature, SOC, and C-rate, which can also be used as a model for future research.

Source link: https://ui.adsabs.harvard.edu/abs/2022JElS..169e0511N/abstract


Slower capacity/voltage degradation of surface engineered LiNi 0.92 Co 0.05 Mn 0.03 O 2 cathode for lithium-ion batteries

A NASICON-structured Li 2 AlZr 3 is constructed on the surface of LiNi 0. 92 Mn 0. 05 O 2 for stabilizing the layered structure. The capacity of the 1 wt% Li 2 AlZr 3 coated sample shows 144. 2 mAh -1 with a discharge middle voltage of 3. 71 V after 400 cycles under the voltage range of 2. 7-4. 3 V. More tests show that the uniform NASICON coating can effectively reduce structural damage and intergranular cracks after long-term cycling.

Source link: https://ui.adsabs.harvard.edu/abs/2021ApSS..57051017Z/abstract


Heterostructured lithium-rich layered oxides core@ spinel- MgAl 2 O 4 shell as high-performance cathode for lithium-ion batteries

Lithium-rich layered oxides with ultra-high specific capacity are one of the most promising cathodes for lithium-ion batteries. The robust MgAl 2 O 4 decoration layer has not only helped reduce the structure's mismatch to maintain the building's stability, but also reduced the chance of electrolyte reactions during long-term cycles. In addition, density functional theory results show that the surface oxygen release energy barrier is raised with MAO's surface decoration. According to researchers, the coated LLO-based hetero-structured cathode shows a higher ICE and lower interface resistance than that of LLO electrode.

Source link: https://ui.adsabs.harvard.edu/abs/2022ApSS..59253328L/abstract


Enhanced cyclability and reversibility of nickel-rich cathode for lithium-ion batteries via LiH 2 PO 4 assisted saturated Li 2 CO 3 washing

In this paper, a concentrated Li 2 CO 3 system is introduced for eliminating toxic LiOH by-products selectively, while inhibiting the dissolution of lattice Li+. With an initial discharge capacity of 184. 5 mAh -1 at 0. 2 percent and an improved capacity retention rate of 86. 2 percent after 500 cycles at 1C rate, the washed LiNi 0. 15 O 2 displayed improved electrochemical results as a result of full cell testing. LiH 2 PO 4 is a washing additive used to produce a protective phosphate coating layer with high durability instead of Li 2 CO 3 on the outer surface of NCA's outer surface, in order to further enhance the stability of Ni-rich lithium storage system.

Source link: https://ui.adsabs.harvard.edu/abs/2022ApSS..59353409L/abstract


B 2 O 3 /LiBO 2 dual-modification layer stabilized Ni-rich cathode for lithium-ion battery

One of the most promising lithium-ion battery candidates for high-density lithium-ion battery is Ni-rich layered oxide ceramic with high theoretical strength and low cost. As a result, the boron modified cathode exhibits a high capacity of 180. 4mAh g-1 along with a 90 percent retention rate after 100 cycles at 1. 75-4. 35 V at 25 b01C, although the pristine NCM89 cathode only holds 59% of its initial capacity after 100 cycles.

Source link: https://ui.adsabs.harvard.edu/abs/2022JPS...53631510L/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions