Carbon-coated single-crystalline LiMn2O4 nanowires synthesized by high-temperature solid-state reaction with high capacity for Li-ion battery

Cao, Jinhua; Guo, Shouwu; Yan, Ruiyang; Zhang, Ce; Guo, Jialin; Peng, Zheng

doi:10.1016/j.jallcom.2018.01.107

Cited by 38 publications

(17 citation statements)

References 51 publications

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“…After the 2nd, 10th, 50th,a nd 100th cycles, the semicirclesi nt he high-frequency regiona re overlapped. The diameter of the semicircle represents the charget ransfer resistance (R ct ), which is approximately 330 W. [28] The overlapped semicircles indicate the stable structure of the electrode. The inset image in Figure 3b is their fitted equivalent circuit.…”

Section: Resultsmentioning

confidence: 99%

A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na_0.44MnO₂ Tunnels and Layered Na₂Mn₃O₇ for Na‐Ion Batteries

Peng

Wang

et al. 2020

ChemSusChem

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Owing to its large capacity and high average potential, the structure and reversible O‐redox compensation mechanism of Na2Mn3O7 have recently been analyzed. However, capacity fade and low coulombic efficiency over multiple cycles have also been found to be a problem, which result from oxygen evolution at high charge voltages. Herein, a Na0.44MnO2⋅Na2Mn3O7 heterojunction of primary nanosheets was prepared by a sol‐gel‐assisted high‐temperature sintering method. In the nanodomain regions, the close contact of Na0.44MnO2 not only supplies multidimensional channels to improve the rate performance of the composite, but also plays the role of pillars for enhancing the cycling stability and coulombic efficiency; this is accomplished by suppressing oxygen evolution, which is confirmed by high‐resolution (HR)TEM, cyclic voltammetry, and charge/discharge curves. As the cathode of a Na‐ion battery, at 200 mA g−1 after 100 cycles, the Na0.44MnO2⋅Na2Mn3O7 heterojunction retains an 88 % capacity and the coulombic efficiency approaches 100 % during the cycles. At 1000 mA g−1, the Na0.44MnO2⋅Na2Mn3O7 heterojunction has a discharge capacity of 72 mAh g−1. In addition, the average potential is as high as 2.7 V in the range 1.5–4.6 V. The above good performances indicate that heterojunctions are an effective strategy for addressing oxygen evolution by disturbing the long‐range order distribution of manganese vacancies in the Mn‐O layer.

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Section: Resultsmentioning

confidence: 99%

A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na_0.44MnO₂ Tunnels and Layered Na₂Mn₃O₇ for Na‐Ion Batteries

Peng

Wang

et al. 2020

ChemSusChem

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“…Until now, there are several main methods to improve the electrochemical performance of cathode materials. Such as surface coating by carbon material or other high conductivity material, doping, and structural control [30]. The structural control method was demonstrated to affect the materials' physical and electrochemical performance.…”

Section: Introductionmentioning

confidence: 99%

NH4V3O8 Rectangular Nanotube: A Novel High-Performance Cathode Material for Lithium Ion Batteries

Kou

Song

2021

Appl. Phys. A

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The morphology and nanosize of cathode materials play a crucial role in the improved electrochemical properties of the electrode material for lithium ion batteries. Herein, we report the synthesis of a novel NH 4 V 3 O 8 rectangular nanotube via a facile one-pot solvothermal protocol with the use of the mixing solvent containing glycerol, ethanol, and ethylene glycol. The morphology and nanosize evolution of the as-prepared NH 4 V 3 O 8 materials from the addition of different solvents has been systematically investigated. The electrochemical properties of these materials are closely related to their structure. Compared with other synthesized counterparts with three different morphologies (nanoparticle, ultrasmall nanoparticle, and hierarchical microsheet), the resultant NH 4 V 3 O 8 rectangular nanotube exhibited high reversible capacity with a maximum discharge capacity of 253.8 mAh g − 1 at 15 mA g − 1 , and the capacity retention rate is 75 % after 50 cycles. This work reveals the relationship between the morphology and electrochemical performance of NH 4 V 3 O 8 and provides a feasible method for the synthesis of highperformance electrode materials.

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“…Many methods were reported to effectively improve the electrochemical performance of the LiMn 2 O 4 cells, such as element partial substitutions (Ding et al, 2011;Piao et al, 2018) and surface coatings (Cao et al, 2018;Li et al, 2018;Zhang et al, 2018). However, alternatives and surface coatings usually cause reversible capacity loss and involve high cost manufacture.…”

Section: Introductionmentioning

confidence: 99%

Improving Cyclic Stability of LiMn2O4/Graphite Battery Under Elevated Temperature by Using 1, 3-Propane Sultone as Electrolyte Additive

Liu

et al. 2020

Front. Mater.

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Spinel lithium manganese oxide (LiMn 2 O 4) based Li-ion battery (LIB) is attractive for hybrid/full electric vehicles because of its abundant resources and easy preparation. However, operation under an elevated temperature could cause severe capacity fading of the spinel cathodes. In this work, 1, 3-propane sultone (PS) is investigated as an electrolyte additive for improving the cyclability of the LiMn 2 O 4 /graphite LIB at elevated temperature. The charge and discharge measurement proves that PS can significantly enhance the cyclability of 053048-type LiMn 2 O 4 /graphite pouch cell at 60 • C. Compared to the cell without additive, the capacity retention of the cell using electrolyte with 5% PS increases from 52 to 71% after 180 cycles. The improved cyclability is attributable to the modification of the solid electrolyte interface (SEI) on both positive and negative sides of the LiMn 2 O 4 /graphite cell by PS, which effectively prevents anode and cathode from structural breakdown and inhibits the electrolyte decomposition.

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Carbon-coated single-crystalline LiMn2O4 nanowires synthesized by high-temperature solid-state reaction with high capacity for Li-ion battery

Cited by 38 publications

References 51 publications

A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na_0.44MnO₂ Tunnels and Layered Na₂Mn₃O₇ for Na‐Ion Batteries

A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na_0.44MnO₂ Tunnels and Layered Na₂Mn₃O₇ for Na‐Ion Batteries

NH4V3O8 Rectangular Nanotube: A Novel High-Performance Cathode Material for Lithium Ion Batteries

Improving Cyclic Stability of LiMn2O4/Graphite Battery Under Elevated Temperature by Using 1, 3-Propane Sultone as Electrolyte Additive

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Carbon-coated single-crystalline LiMn2O4 nanowires synthesized by high-temperature solid-state reaction with high capacity for Li-ion battery

Cited by 38 publications

References 51 publications

A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na0.44MnO2 Tunnels and Layered Na2Mn3O7 for Na‐Ion Batteries

A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na0.44MnO2 Tunnels and Layered Na2Mn3O7 for Na‐Ion Batteries

NH4V3O8 Rectangular Nanotube: A Novel High-Performance Cathode Material for Lithium Ion Batteries

Improving Cyclic Stability of LiMn2O4/Graphite Battery Under Elevated Temperature by Using 1, 3-Propane Sultone as Electrolyte Additive

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A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na_0.44MnO₂ Tunnels and Layered Na₂Mn₃O₇ for Na‐Ion Batteries

A High‐Performance Primary Nanosheet Heterojunction Cathode Composed of Na_0.44MnO₂ Tunnels and Layered Na₂Mn₃O₇ for Na‐Ion Batteries