Preparing LiNi0.5Mn1.5O4 nanoplates with superior properties in lithium-ion batteries using bimetal–organic coordination-polymers as precursors

Yang, Shi-Feng; Chen, Jian; Liu, Yingjia; Yi, Baolian

doi:10.1039/c4ta01147c

Cited by 67 publications

(45 citation statements)

References 66 publications

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“…The peaks located at 642.0 and 643.3 eV correspond to Mn 3+ and Mn 4+ in the Mn 2p 3/2 spectrum, respectively. Meanwhile, 653.5 and 654.6 eV are related to Mn 3+ and Mn 4+ in the Mn 2p 1/2 spectrum . It can be found that Mn oxidation states of LNMO and LNCMO are between +3 and +4.…”

Section: Resultsmentioning

confidence: 94%

High‐Voltage LiNi_0.45Cr_0.1Mn_1.45O₄ Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

Wang

Nie

et al. 2017

Adv Funct Materials

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Spinel LiNi 0.45 Cr 0.1 Mn 1.45 O 4 synthesized by a scalable solution route combined by high temperature calcination is investigated as cathode for ultralong-life lithium-ion batteries in a wide operating temperature range. Scanning electron microscopy reveals homogeneous microsized polyhedral morphology with highly exposed {100} and {111} surfaces. The most highlighted result is that LiNi 0.45 Cr 0.1 Mn 1.45 O 4 has extremely long cycle performance and high capacity retention at various temperatures (0, 25, 50 °C), indicating that Cr doping is a prospective approach to enable 5 V LiNi 0.5 Mn 1.5 O 4 (LNMO)-based cathode materials with excellent cycling performances for commercial applications. After 1000 cycles, the capacity retention of LiNi 0.45 Cr 0.1 Mn 1.45 O 4 is 100.30% and 82.75% at 0 °C and 25 °C at 1 C rate, respectively. Notably, over 350 cycles at 50 °C, the capacity retention of LiNi 0.45 Cr 0.1 Mn 1.45 O 4 can maintain up to 91.49% at 1 C. All the values are comparable to pristine LNMO, which can be attributed to the elimination of Li y Ni 1−y O impurity phase, highly exposed {100} surfaces, less Mn 3+ ions, and enhancement of ion and electron conductivity by Cr doping. Furthermore, an assembled LiNi 0.45 Cr 0.1 Mn 1.45 O 4 /Li 4 Ti 5 O 12 full cell delivers an initial discharge capacity of 101 mA h g −1 , meanwhile the capacity retention is 82.07% after 100 cycles.

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Section: Resultsmentioning

confidence: 94%

High‐Voltage LiNi_0.45Cr_0.1Mn_1.45O₄ Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

Wang

Nie

et al. 2017

Adv Funct Materials

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“…Some believe that the existence of Mn 3+ is helpful to stabilize the cycling performance and to improve the stability. [23][24][25][26][27][28][29][30] Many efforts have been made to optimize the performance of this LNMO spinel material and a great of advance has been achieved in recent years. Others argue that Mn 3+ ions have higher tendency to disproportionate by 2Mn 3+ / Mn 2+ + Mn 4+ .…”

Section: Introductionmentioning

confidence: 99%

“…28,31,[39][40][41][42][43] Generally, the smaller the particles size is, the shorter the lithium ion diffusion distance and the electron transfer distance are, the better the rate capability is. 28,31,[39][40][41][42][43] Generally, the smaller the particles size is, the shorter the lithium ion diffusion distance and the electron transfer distance are, the better the rate capability is.…”

Section: Introductionmentioning

confidence: 99%

Ni/Mn ratio and morphology-dependent crystallographic facet structure and electrochemical properties of the high-voltage spinel LiNi_0.5Mn_1.5O₄ cathode material

et al. 2015

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The LiNi 0.5 Mn 1.5 O 4 (LNMO) spinel is an attractive cathode material for next generation lithium-ion batteries as it offers a high power capability with a discharge voltage of 4.7 V and a theoretical capacity of 147 mA h g À1 . In this paper, porous LNMO microspheres/cubes, which are constructed with nanometer-sized primary particles with different Ni/Mn ratios, have been synthesized by a facile method that involves the use of MnCO 3 microspheres/cubes as the self-supporting template. The effects of the morphology of the MnCO 3 and the Ni/Mn ratio on the physicochemical and electrochemical properties of the as-synthesized LNMO materials were investigated in detail. Scanning electron microscopy (SEM) observation shows that the morphology of the porous MnCO 3 has an important effect on the morphology and degree of dispersion of the obtained LNMO spinels, so as to the electrochemical performance. XPS and XRD results show that the Ni/Mn ratio has a significant impact on the Mn 3+ content, phase purity (rock-salt phase) and crystallographic facet orientations of the LNMO-based cathode materials. In particular, the Mn 3+ content, rock-salt phase and high-active (111) facet in the LNMO spinels were found to be adjusted by the Ni/Mn ratio. With the presence of a reasonable Mn 3+ content, high-active facet, the absence of the impurity phase (rock-salt phase) as well as the large cationic disorder in the Cr-doping LNMO spinels, the rate performance and capacity retention of the product could be significantly improved. All these findings show the important roles of the synergic effects of the morphology and the composition on the improvement of the electrochemical performance of LNMO-based cathode materials.

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“…[1][2][3][4][5][6][7] To further improve the performance of LIBs, it is necessary to develop alternative cathode materials that possess larger capacity and higher voltage than the currently used materials. [1][2][3][4][5][6][7] To further improve the performance of LIBs, it is necessary to develop alternative cathode materials that possess larger capacity and higher voltage than the currently used materials.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Performance in Ni‐Doped LiMn₂O₄‐Based Composite Cathodes for Lithium‐Ion Batteries

Deng

Mou

et al. 2017

ChemElectroChem

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High-voltage and high-performance Ni-doped LiMn 2 O 4 -basedcomposite cathodes have been obtained from the nominal formula of Li 2 Mn 1-x Ni x SiO 4 , synthesized by using a citric acidassisted sol-gel method. The spinel Li(Mn,Ni) 2 O 4 and layered Li 2 SiO 3 coexist in the composites with x = 0 and 0.05, whereas the materials with x = 0.15 and 0.25 consist of Li(Mn,Ni) 2 O 4 , Li 2 SiO 3 and layered LiNiO 2 ; at x ! 0.35, the impurity phases of NiO and Ni 6 MnO 8 are detected. A significant improvement in discharge capacity and rate performance of the materials has been caused by the simultaneous existence of LiNiO 2 and Li 2 SiO 3 . The composite with x = 0.25 givesa very high initial discharge capacity of 168 mAh g À1 in the potential range of 3-5 V and exhibits an excellent rate performance. Our study shows that the composites consisting of Li(

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Preparing LiNi_0.5Mn_1.5O₄ nanoplates with superior properties in lithium-ion batteries using bimetal–organic coordination-polymers as precursors

Cited by 67 publications

References 66 publications

High‐Voltage LiNi_0.45Cr_0.1Mn_1.45O₄ Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

High‐Voltage LiNi_0.45Cr_0.1Mn_1.45O₄ Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

Ni/Mn ratio and morphology-dependent crystallographic facet structure and electrochemical properties of the high-voltage spinel LiNi_0.5Mn_1.5O₄ cathode material

Enhanced Electrochemical Performance in Ni‐Doped LiMn₂O₄‐Based Composite Cathodes for Lithium‐Ion Batteries

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Preparing LiNi0.5Mn1.5O4 nanoplates with superior properties in lithium-ion batteries using bimetal–organic coordination-polymers as precursors

Cited by 67 publications

References 66 publications

High‐Voltage LiNi0.45Cr0.1Mn1.45O4 Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

High‐Voltage LiNi0.45Cr0.1Mn1.45O4 Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

Ni/Mn ratio and morphology-dependent crystallographic facet structure and electrochemical properties of the high-voltage spinel LiNi0.5Mn1.5O4 cathode material

Enhanced Electrochemical Performance in Ni‐Doped LiMn2O4‐Based Composite Cathodes for Lithium‐Ion Batteries

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Preparing LiNi_0.5Mn_1.5O₄ nanoplates with superior properties in lithium-ion batteries using bimetal–organic coordination-polymers as precursors

High‐Voltage LiNi_0.45Cr_0.1Mn_1.45O₄ Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

High‐Voltage LiNi_0.45Cr_0.1Mn_1.45O₄ Cathode with Superlong Cycle Performance for Wide Temperature Lithium‐Ion Batteries

Ni/Mn ratio and morphology-dependent crystallographic facet structure and electrochemical properties of the high-voltage spinel LiNi_0.5Mn_1.5O₄ cathode material

Enhanced Electrochemical Performance in Ni‐Doped LiMn₂O₄‐Based Composite Cathodes for Lithium‐Ion Batteries