Improved cycling performance of 5 V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating

Liu, Dilong; Bai, Ying; Zhao, Sen; Zhang, Weifeng

doi:10.1016/j.jpowsour.2012.07.058

Cited by 79 publications

(26 citation statements)

References 35 publications

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“…Apparently, the impedance of the pristine electrode increases rapidly with cycling, compared with that of the 1 wt% AlF 3 -coated LMNO. Liu et al reported that the continuous increase of impedance in LMNO electrode is possibly due to the formation of thick SEI layer by the severe oxidation of electrolyte at high potential [30]. Significantly, the results herein demonstrate that the AlF 3 coating effectively inhibits the growth of SEI layer through alleviating the decomposition of electrolyte.…”

Section: Electrochemical Characteristicssupporting

confidence: 51%

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Novel AlF3 surface modified spinel LiMn1.5Ni0.5O4 for lithium-ion batteries: performance characterization and mechanism exploration

Yin

Sun

et al. 2015

Electrochimica Acta

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Section: Electrochemical Characteristicssupporting

confidence: 51%

“…7, indicating that small amount of AlF 3 surface coating does not change the electrochemical reaction mechanism. The redox peaks in the 4 V region are attributed to the Mn 3+ /Mn 4+ redox reaction [30]. As can be observed in the inset of Fig.…”

Section: Electrochemical Characteristicsmentioning

confidence: 67%

Novel AlF3 surface modified spinel LiMn1.5Ni0.5O4 for lithium-ion batteries: performance characterization and mechanism exploration

Yin

Sun

et al. 2015

Electrochimica Acta

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“…We also noticed that many researches focused on the effect of coating material types or amounts, neglected effect of coating process conditions such as heat-treated temperature on the electrochemical performance of cathode materials. And the coatings covered on cathode grains usually are not pure phase, even amorphous [23,25] because of the technical limit of coating process and stable temperature range of matrix.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature of Li2O–Al2O3–TiO2–P2O5 solid-state electrolyte coating process on the performance of LiNi0.5Mn1.5O4 cathode materials

Deng

Zhao

et al. 2015

Journal of Power Sources

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“…As for the LiMn 2 O 4 spinel, the remedy envisioned for canceling the electrode-electrolyte reactions is the same for both materials, namely coat the particles with a protective layer. Like in the case of LCO, numerous coatings have been experimented such as ZnO, AlPO 4 , FePO 4 that improved the electrochemical properties but not as much as Al 2 O 3 [66]. As an example, the effect of ZnO coating on LMN electrode in the charged state at 4.75 V is depicted in Fig.…”

Section: Licoomentioning

confidence: 99%

Safety Aspects of Li-Ion Batteries

et al. 2016

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Lithium-ion batteries have dominated the battery industry for the past several years in portable electronic devices due to their high volumetric and gravimetric energy densities. It was expected that the success of these batteries in small scale applications would translate to large scale applications, which would have an important impact in the future of the environment by improving energy efficiency and reducing pollution. Safety of lithium-ion rechargeable batteries has been the technical obstacle for high power demand applications [1]. Lithium ion batteries under normal usage are generally safe. However, safety of Li-ion battery under abusive conditions is still a technical barrier for applications such as hybrid electric vehicles (HEV) and electric vehicles (EV), and the safety too often relies on the battery monitoring system (BMS). This thermal runaway not only is a safety hazard but also hinders the performance of lithium ion batteries eventually.Even though the mechanism of thermal runaway is initiated by the anode in combination with the electrolyte [2], the rapid temperature rise in the cell, which dominates the overall heat generated during this process, is produced by the cathode reacting with the electrolyte [3,4]. Therefore, it is of utmost importance to find a more structurally stable cathode in order to use lithium batteries at their fullest potential [5].Lithium ion cells have historically used lithium metal oxides as cathode materials due to their high capacity for lithium intercalation, and suitable chemical and physical properties required for Li-ion electrodes. Layered materials with LiMO 2 structure, where M ¼ Co, Ni, Mn, or a combination of these metals, have been the most extensively used and investigated cathodes. These types of cathodes show excellent performance, but suffer from higher cost, toxicity (LiCoO 2 ), and thermal instability (LiNiO 2 ). In order to avoid these problems, another lithium metal oxide material with spinel structure LiMn 2 O 4 has been proposed to substitute the layered materials. This oxide is inexpensive and environmentally friendly, but has

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Improved cycling performance of 5 V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating

Cited by 79 publications

References 35 publications

Novel AlF3 surface modified spinel LiMn1.5Ni0.5O4 for lithium-ion batteries: performance characterization and mechanism exploration

Novel AlF3 surface modified spinel LiMn1.5Ni0.5O4 for lithium-ion batteries: performance characterization and mechanism exploration

Effect of temperature of Li2O–Al2O3–TiO2–P2O5 solid-state electrolyte coating process on the performance of LiNi0.5Mn1.5O4 cathode materials

Safety Aspects of Li-Ion Batteries

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