Enhanced electrochemical performance of LiMnBO3 with conductive glassy phase: a prospective cathode material for lithium-ion battery

Ragupathi, Veena; Safiq, M.; Panigrahi, Puspamitra; Hussain, Tanveer; Raman, Sumathy; Nagarajan, G.

doi:10.1007/s11581-017-2019-8

Cited by 17 publications

(13 citation statements)

References 47 publications

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“…ions is approximately 50%, meaning that the c parameter is close to optimum. [26]. It should be, however, pointed that the material was prepared using sol-gel method which require the use of chelating medium (in this case: propionic acid, C3H6O2), that also act as a carbon source.…”

Section: Discussionmentioning

confidence: 99%

“…The polaron radius was, however, always lower than the mean Mn-Mn distance (even for 0.6 mole Mn) which may partly explain the low conductivity of manganese glasses. On the other hand, Ragupathi et al studied the properties of crystalline LiMnBO3 with additional glassy phase of LiBO2 and obtained the bulk conductivity value equal to 3.6×10 -7 S.cm -1 [26]. It should be, however, pointed that the material was prepared using sol-gel method which require the use of chelating medium (in this case: propionic acid, C3H6O2), that also act as a carbon source.…”

Section: Discussionmentioning

confidence: 99%

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Properties of LiMnBO3 glasses and nanostructured glass-ceramics

et al. 2019

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Polycrystalline LiMnBO3 is a promising cathode material for Li-ion batteries. In this work, we investigated the thermal, structural and electrical properties of glassy and nanocrystallized materials having the same chemical composition. The original glass was obtained via a standard meltquenching method. SEM and 7 Li solid-state NMR indicate that it contains a mixture of two distinct glassy phases. The results suggest that the electrical conductivity of the glass is dominated by the ionic one. The dc conductivity of initial glass was estimated to be in the order of 10 −18 S.cm −1 at room temperature. The thermal nanocrystallization of the glass produces a nanostructured glass-ceramics containing MnBO3 and LiMnBO3 phases. The electric conductivity of this glass-ceramics is increased by 6 orders of magnitude, compared to the starting material at room temperature. Compared to other manganese and borate containing glasses reported in the literature, the conductivity of the nanostructured glass ceramics is higher than that of the previously reported glassy materials. Such improved conductivity stems from the facilitated electronic transport along the grain boundaries.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Properties of LiMnBO3 glasses and nanostructured glass-ceramics

et al. 2019

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“…However, recently, sodium-ion batteries (SIBs) have attracted more attention over LIBs due to their lower toxicity and higher abundance of Na in the earth's crust. 4 The storage mechanism of SIBs is similar to LIBs; therefore, they may be a good alternative to LIBs in large-scale applications. 4 Despite that the first commercial intercalation battery was a layered oxide cathode material (LiCoO 2 ), compounds with a polyanionic framework were known as important electrode materials due to their inductive effect.…”

Section: Introductionmentioning

confidence: 99%

Ab Initio Study of AMBO₃ (A = Li, Na and M = Mn, Fe, Co, Ni) as Cathode Materials for Li-Ion and Na-Ion Batteries

2020

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According to the importance of polyanion cathode materials in intercalation batteries, they may play a significant role in energy-storage systems. Here, evaluations of LiMBO 3 and NaMBO 3 (M = Mn, Fe, Co, Ni) as cathode materials of Li-ion and Na-ion batteries, respectively, are performed in the density functional theory (DFT) framework. The structural properties, structural stability after deintercalation, cell voltage, electrical conductivity, and rate capability of the cathodes are assessed. As a result, Li compounds have more structural stability and energy density than Na compounds in the C2/c frame structure. Cell voltage is increased by increasing the atomic number of the transition metal (TM). A noble approach is used to evaluate electrical conductivity and rate capability. M = Fe compounds exhibit the lowest band gaps (BGs), and M = Mn compounds exhibit almost the highest one. The best electrical rate-capable compounds are estimated to be M = Mn ones and the worst are M = Ni ones. As far as cell potential is not the concern, AMnBO 3 , ACoBO 3 −AFeBO 3 , and ANiBO 3 are the best to the worst considered cathode materials.

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“…The two polymorphs have the same theoretical capacity of 222 mAh g −1 , while h-LiMnBO 3 has a higher redox voltage and m-LiMnBO 3 has better electrochemical activity [5]. More studies focus on the improvement of m-LiMnBO 3 [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of PVP Coating on LiMnBO3 Cathodes for Li-Ion Batteries

Hong

et al. 2020

Materials

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LiMnBO3 is a potential cathode for Li-ion batteries, but it suffers from a low electrochemical activity. To improve the electrochemical performance of LiMnBO3, the effect of polyvinyl pyrrolidone (PVP) as carbon additive was studied. Monoclinic LiMnBO3/C and LiMnBO3-MnO/C materials were obtained by a solid-state method at 500 °C. The structure, morphology and electrochemical behavior of these materials are characterized and compared. The results show that carbon additives and ball-milling dispersants affect the formation of impurities in the final products, but MnO is beneficial for the performance of LiMnBO3. The sample of LiMnBO3-MnO/C delivered a high capacity of 162.1 mAh g−1 because the synergistic effect of the MnO/C composite and the suppression of the PVP coating on particle growth facilitates charge transfer and lithium–ion diffusion.

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Enhanced electrochemical performance of LiMnBO3 with conductive glassy phase: a prospective cathode material for lithium-ion battery

Cited by 17 publications

References 47 publications

Properties of LiMnBO3 glasses and nanostructured glass-ceramics

Properties of LiMnBO3 glasses and nanostructured glass-ceramics

Ab Initio Study of AMBO₃ (A = Li, Na and M = Mn, Fe, Co, Ni) as Cathode Materials for Li-Ion and Na-Ion Batteries

Effect of PVP Coating on LiMnBO3 Cathodes for Li-Ion Batteries

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Enhanced electrochemical performance of LiMnBO3 with conductive glassy phase: a prospective cathode material for lithium-ion battery

Cited by 17 publications

References 47 publications

Properties of LiMnBO3 glasses and nanostructured glass-ceramics

Properties of LiMnBO3 glasses and nanostructured glass-ceramics

Ab Initio Study of AMBO3 (A = Li, Na and M = Mn, Fe, Co, Ni) as Cathode Materials for Li-Ion and Na-Ion Batteries

Effect of PVP Coating on LiMnBO3 Cathodes for Li-Ion Batteries

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Product

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Ab Initio Study of AMBO₃ (A = Li, Na and M = Mn, Fe, Co, Ni) as Cathode Materials for Li-Ion and Na-Ion Batteries