Electrical properties of LiPO&lt;inf&gt;3&lt;/inf&gt; glasses

Hockicko, Peter; Kúdelčík, Jozef; Muñoz, Francisco; Muñoz-Senovilla, Laura

doi:10.1109/elektro.2014.6848981

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…[ 53] And this result also verifies that some DFOB ‐ can be excluded from inner solvation shell and preferentially oxidized. Besides, TMP also contributes to the stable high voltage performance of cells with LHCEs, its oxidation product,

{PO}_{3}^{‐}

could facilitate Li + transportation in the CEI [ 33,54] (Figure ). Therefore, LHCEs can promote the formation of inorganic‐rich CEI layers.…”

Section: Resultsmentioning

confidence: 99%

Advanced Nonflammable Localized High‐Concentration Electrolyte For High Energy Density Lithium Battery

Jia

Zhang

Guo

et al. 2022

Energy & Environ Materials

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Since firstly commercialized by Sony, lithium batteries are becoming ubiquitous in 3C electronic products, electric vehicles (EVs), and large-scale energy storage (ES) devices, [1][2][3][4][5] while the applications of EVs and ES still call for batteries with higher energy density. The combination of high voltage (≥4.3 V) nickel-rich cathode (LiNi x Mn y Co (1-x-y) O 2 , NCM) and lithium metal anode is no doubt an ideal choice to fulfill the energy demand, while the poor cycle stability and safety concern brought about by inferior interfacial stability between lithium and electrolyte are seriously hindering its development. Electrolyte is no doubt the most convenient way to enhance the stability of high energy density batteries; therefore, tremendous efforts have been devoted to novel electrolyte design. [6][7][8] Stable cathode/anode electrolyte interface (CEI/SEI) is the key to enable long life of Li|| NCM batteries, and in terms of electrolyte design, several strategies have been trialed and proved to be effective. The first and most commonly used one is using special additives that could promote the formation of SEI/CEI, typical ones including lithium difluoro(oxalato)borate (LiDFOB), [9,10] Lithium bis(fluorosulfonyl)imide (LiFSI), [11] lithium nitrate (LiNO 3 ), [12] to name but a few. With 1.5 wt% LiDFOB as additive, graphite|| LiNi 0.83 Mn 0.05 Co 0.12 O 2 cell kept 83.1% of its initial capacity after 200 cycles at C/3 rate, while capacity retention of the one without LiDFOB is only 59.9% under the same condition. [10] However, this strategy suffers from additive loss, as the additives usually need to be self-sacrificed to form the protection layer on the electrode. [13] When the additives are used up, cell is approaching the end of its life. The second strategy is introducing solvents with better electrochemical stability, such as fluorinated carbonate, [14] sulfones, [15] and phosphates, [16] to prohibit the electrolyte from being oxidized on the cathode surface. Chen et al. [17] introduced an all-fluorinated electrolyte, 1 M LiPF 6 in methyl 3,3,3trifluoropionate (MTFP)/fluoroethylene carbonate (FEC) (9:1, by vol.), which significantly enhanced the high voltage performance of Li|| NMC811 cell. Attributed to the fluorine-rich interface formed by the electrolyte, it demonstrated a capacity retention of 80% after 250 cycles even under a high cutoff voltage of 4.5 V, whereas capacity retention of the one with 1 M LiPF 6 in ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1, by vol.) is only 53%. The third strategy is to adjust the Li + solvation structure by preparing (localized) high-concentration

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{PO}_{3}^{‐}

could facilitate Li + transportation in the CEI [ 33,54] (Figure ). Therefore, LHCEs can promote the formation of inorganic‐rich CEI layers.…”

Section: Resultsmentioning

confidence: 99%

Advanced Nonflammable Localized High‐Concentration Electrolyte For High Energy Density Lithium Battery

Jia

Zhang

Guo

et al. 2022

Energy & Environ Materials

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“…Several studies [ [4] , [5] , [6] , [7] ] have shown that Li 2 O–P 2 O 5 glass is an excellent fast-conducting glass for Li + ions. One of the strategies embraced for augmenting conductivity involves introducing a doping salt, such as a metal halide (LiX, where X = Cl–, Br–, I–), into these glass compositions [ [8] , [9] , [10] ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of structural, thermal, and electrical characteristics of zirconium-doped lithium-phosphate glasses

Ouachouo,

Es-soufi,

Sayyed

et al. 2023

Heliyon

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“…[16] LiPO 3 is also finding new applications for the production of the next generation of LIBs with solid electrolytes. [17][18][19] This phosphate glass, like other types of glasses, namely oxides, doped oxides, sulphides, fluorides, and quenched glasses, have long been known as potential solid electrolytes for high energy density batteries. [20] Due to the lack of grain boundaries, plasticity, weak electronic contribution to the conductivity, and the possibility of manufacturing them in thin-film configuration, they can serve as the ideal replacement for traditional non-aqueous liquid electrolytes, adding the advantages of nonflammability and miniaturization.…”

Section: Introductionmentioning

confidence: 99%

Dehydration of lithium dihydrogenphosphate in a ball‐mill rotary‐kiln (BaMRoK) reactor

2021

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Lithium dihydrogenphosphate (LHP) needs to be dehydrated to be safely applied for the melt casting process to produce lithium iron phosphate (LFP). The dehydration reaction consists of several consecutive melting, oligomerization, and crystallization steps resulting in a solid product stuck to the reaction vessel at around 400 C. Here we applied an electrical shell-heated rotary kiln containing grinding media (ball-mill rotary-kiln, BaMRoK) to dehydrate LHP at 400 C and recover the ground product without needing any extra processing. The bulk convective heat transfer coefficient of the kiln has been calculated in the presence of the grinding media and the temperature profile has been modelled using COM-SOL Multiphysics. The kinetic model of the reaction from thermogravimetric analysis (TGA) and the thermal profile suggest that the dehydration reaction mostly happens on the internal surface of the BaMRoK wall. K E Y W O R D S ball-mill rotary-kiln, heat transfer, LiH 2 PO 4 , LiPO 3 , thermal decomposition 1 | INTRODUCTION The lithium-ion battery (LIB) global market has experienced dramatic growth from 3 billion dollars in 2000 to over 20 billion dollars in 2017. [1,2] This is in part due to the introduction of such batteries in plugin hybrid and electric vehicles (EVs) since 2009. [1] This new market gives rise to the demand for LIBs with high specific energy and long lifespan , but requires that the safety of this type of battery improves and its production cost decreases. Lithium iron phosphate (LiFePO 4 , LFP) is one of the cathode materials used in the LIBs for the automotive industry. Battery producers like BYD, CATL, and Lishen use LFP as the cathode material for the batteries manufactured for EVs and plug-in EVs (PHEVs). [3] Studies show that LFP has a much smaller (>0.1%) self-heating rate compared to other common oxide type cathode material, resulting in safer LIBs. [4,5] During the two decades after its first introduction as cathode material by Padhi et al [6] in 1997, LFP has been synthesized by different methods at the laboratory-scale as well as industrial-scale. [7-15] The melt casting method for the production of LFP reacts sources of lithium, iron, and phosphate from a wide range of reactants in the molten phase under inert/reducing atmosphere to produce high purity LFP. The application of commodity-grade and course reactants and the lack of aqueous phase in the process can decrease the production cost of LFP in comparison with other methods. However, most of the reactants considered for this method release large amounts of gases upon fast decomposition reactions at the reaction temperature (around 1000 C) in the molten phase. This is an issue for the scale-up of the process, especially for continuous production. Dehydration of lithium dihydrogenphosphate (LHP) was studied as a typical degassing reaction of the

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Electrical properties of LiPO<inf>3</inf> glasses

Cited by 4 publications

References 13 publications

Advanced Nonflammable Localized High‐Concentration Electrolyte For High Energy Density Lithium Battery

Advanced Nonflammable Localized High‐Concentration Electrolyte For High Energy Density Lithium Battery

Investigation of structural, thermal, and electrical characteristics of zirconium-doped lithium-phosphate glasses

Dehydration of lithium dihydrogenphosphate in a ball‐mill rotary‐kiln (BaMRoK) reactor

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