Effect of Mg2+/F− co-doping on electrochemical performance of LiNi0.5Mn1.5O4 for 5 V lithium-ion batteries

Wei, Aijia; Li, Wen; Chang, Qian; Bai, Xue; He, Rui; Zhang, Lihui; Liu, Zhenfa; Wang, Yanji

doi:10.1016/j.electacta.2019.134692

Cited by 55 publications

(28 citation statements)

References 38 publications

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“…10 To solve this problem, lithium diuoro(oxalato)borate (LiDFOB), lithium tetrauoroborate (LiBF 4 ) and LiPF 6 additives are added into LiFSI-based electrolyte for suppressing corrosion. [11][12][13][14] Among these electrolytes containing additives, an Al current collector is stable up to 5.0 V (vs. Li/Li + ) in organic electrolytes containing LiBOB since an effective passivation layer can be formed on the Al surface. 15,16 The previous work has showed that research on a LiFSI-based nonaqueous electrolyte, LiFSI 0.6 -LiBOB 0.4 -EC/DEC/EMC (1 : 1 : 1), was successfully applied for suppressing Al corrosion caused by LiFSI at 45 C. 17 The electrolyte can effectively inhibit the Al corrosion, caused by the dissolution of co-generated Al(FSI) 3 .…”

Section: Introductionmentioning

confidence: 99%

Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

Zeng

Zhao

et al. 2021

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

Zeng

Zhao

et al. 2021

RSC Adv.

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“…46−48 Moreover, the Nb− O bond is stronger than the Ti−O bond, which can stabilize the structure of LZTN1O during the repeated insertion/ deinsertion process of Li + ions. 49 When the content of Nb element increases, the content of Ti 3+ increases, and the second phase of Ti 2 O 3 appears. Thus, the lattice parameters of LZTN3O and LZTN5O are larger than those of pure LZTO (Table 1).…”

Section: ■ Results and Discussionmentioning

confidence: 98%

Synthesis of Nb-Doped Li₂ZnTi₃O₈ Anode with Long Cycle Life and Applications in the LiMn₂O₄/Li₂ZnTi₃O₈ Full Cell

Zhang

Xun

Shen

et al. 2020

ACS Sustainable Chem. Eng.

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An easy solid-state method is used to prepare Li2ZnTi3O8 (LZTO) doped by the Nb element (LZTN1O). Nb-doping not only improves the specific surface area, total pore volume, and ionic conductivity but also reduces the particle size and transfer resistance of LZTN1O. In addition, the structure has been stabilized, and good electrical contact has been obtained for the LZTN1O electrode via Nb-doping. Compared with LZTO, the electrochemical performance of LZTN1O at 0–55 °C is greatly improved. After 600 cycles, 99.1% of the capacity for the second cycle is obtained at 25 °C at 1 A g–1. For the current densities up to 2–4 A g–1, no capacity loss based on the specific capacity of the second cycle occurs at the 200th cycle at 25 °C. At 3 A g–1, 180.8 mA h g–1 is delivered at the 120th cycle. At 1 A g–1 for 55 °C, no capacity is lost (corresponding to the second cycle) after 100 cycles. At 0.8 A g–1 for 0 °C, 178.8 mA h g–1 can be obtained for the 60th cycle, and even no capacity is lost (corresponding to the second cycle) for the 500th cycle at 0.5 A g–1. Moreover, when LZTN1O was applied in the LiMn2O4/LZTN1O full cell, the initial discharge specific capacity based on the mass of LiMn2O4 is 90.2 mA h g–1 at 0.5 C in 2.1–3.8 V.

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“…In addition, the doping of F ions reduced the activation barrier for lithium ions to jump along the optimal 8a–16c‐8a path, and improved the rate performance (Figure 9a,b and c). Wei et al [108] . synthesized Mg/F co‐doped LNMO cathode materials by the solid‐phase method and investigated the influence of Mg/F co‐doping on the crystal morphology and phase structure of LNMO and electrochemical performance, demonstrating that Mg/F co‐doping effectively improved the rate performance and cycle performance of LNMO.…”

Section: Modification Methodsmentioning

confidence: 99%

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi_0.5Mn_1.5O₄

et al. 2021

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Lithium‐ion batteries (LIBs) are currently widely applied in many aspects of life, but with the development, the capacity of lithium‐ion batteries can no longer meet the needs. One of the dominant factors to restricting the capacity of LIBs is the cathode materials. Among the derivatives of spinel cathode LiMn2O4 (LMO), LiNi0.5Mn1.5O4 (LNMO) has become one of the research promising cathode materials in the current LIBs due to its high working voltage (4.7 V) and large theoretical specific capacity (147 mAh g−1). However, the short cycle life of LNMO during the electrochemical process limits its large‐scale commercial applications. Thus, it is necessary to summarize and discuss the recent development of LNMO. Through comparison with LiMn2O4, the structure, electrochemical properties of LNMO, influence of Mn on the performance of LNMO, and the capacity fading mechanism are analyzed and discussed in detail. We also summarize the modification methods of LNMO and the influence of preparation methods on the structure and performance of LNMO. Finally, some prospects of LNMO cathode are put forward. This Review article can provide helpful references for future design and construction of LNMO.

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Effect of Mg2+/F− co-doping on electrochemical performance of LiNi0.5Mn1.5O4 for 5 V lithium-ion batteries

Cited by 55 publications

References 38 publications

Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

Synthesis of Nb-Doped Li₂ZnTi₃O₈ Anode with Long Cycle Life and Applications in the LiMn₂O₄/Li₂ZnTi₃O₈ Full Cell

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi_0.5Mn_1.5O₄

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Effect of Mg2+/F− co-doping on electrochemical performance of LiNi0.5Mn1.5O4 for 5 V lithium-ion batteries

Cited by 55 publications

References 38 publications

Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

Synthesis of Nb-Doped Li2ZnTi3O8 Anode with Long Cycle Life and Applications in the LiMn2O4/Li2ZnTi3O8 Full Cell

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi0.5Mn1.5O4

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Effect of Mg2+/F− co-doping on electrochemical performance of LiNi0.5Mn1.5O4 for 5 V lithium-ion batteries

Synthesis of Nb-Doped Li₂ZnTi₃O₈ Anode with Long Cycle Life and Applications in the LiMn₂O₄/Li₂ZnTi₃O₈ Full Cell

Synthesis, Modification, and Lithium‐Storage Properties of Spinel LiNi_0.5Mn_1.5O₄