High electrochemical stability Al-doped spinel LiMn2O4 cathode material for Li-ion batteries

Cai, Zhengyu; Ma, Yangmin; Huang, Xuanning; Yan, Xiaohui; Yu, Zebin; Zhang, Shihong; Song, Guowen; Xu, Youlong; Chen, Wen; Yang, Weidong

doi:10.1016/j.est.2019.101036

Cited by 105 publications

(61 citation statements)

References 32 publications

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“…Tang et al [136] observed the formation of the Mn 3 O 4 phase, a good source of soluble Mn 2+ , on the LMO surface after cycling. Doping of the spinel phase with Al [137], Yt [138], Ce [139], Nb or PO 4 [140] is useful for stabilizing capacity and mitigating the discharge voltage decay (Figure 3). Lithium transition metal oxides have an α-NaFeO2-type structure, which is a distorted rock salt superstructure.…”

Section: Cathodesmentioning

confidence: 99%

Advances in Materials Design for All-Solid-state Batteries: From Bulk to Thin Films

Yang

Abraham

et al. 2020

Applied Sciences

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All-solid-state batteries (SSBs) are one of the most fascinating next-generation energy storage systems that can provide improved energy density and safety for a wide range of applications from portable electronics to electric vehicles. The development of SSBs was accelerated by the discovery of new materials and the design of nanostructures. In particular, advances in the growth of thin-film battery materials facilitated the development of all solid-state thin-film batteries (SSTFBs)—expanding their applications to microelectronics such as flexible devices and implantable medical devices. However, critical challenges still remain, such as low ionic conductivity of solid electrolytes, interfacial instability and difficulty in controlling thin-film growth. In this review, we discuss the evolution of electrode and electrolyte materials for lithium-based batteries and their adoption in SSBs and SSTFBs. We highlight novel design strategies of bulk and thin-film materials to solve the issues in lithium-based batteries. We also focus on the important advances in thin-film electrodes, electrolytes and interfacial layers with the aim of providing insight into the future design of batteries. Furthermore, various thin-film fabrication techniques are also covered in this review.

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Section: Cathodesmentioning

confidence: 99%

Advances in Materials Design for All-Solid-state Batteries: From Bulk to Thin Films

Yang

Abraham

et al. 2020

Applied Sciences

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“…Among the various lithium-ion battery cathode materials, spinel LiMn 2 O 4 is believed to hold huge potential for fulfilling the field-use requirements because of its good thermal stability, low cost, environmental friendliness, and three-dimensional channel structure [ 4 , 5 , 6 ]. Nevertheless, the practical applications of LiMn 2 O 4 cathodes are restricted by the capacity fading during charge–discharge cycles, especially at elevated temperatures (≥ 55 °C), which can be ascribed to the Mn dissolution and Jahn–Teller distortion [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Atomic Insights into Ti Doping on the Stability Enhancement of Truncated Octahedron LiMn2O4 Nanoparticles

Zheng

et al. 2021

Nanomaterials

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Ti-doped truncated octahedron LiTixMn2-xO4 nanocomposites were synthesized through a facile hydrothermal treatment and calcination process. By using spherical aberration-corrected scanning transmission electron microscopy (Cs-STEM), the effects of Ti-doping on the structure evolution and stability enhancement of LiMn2O4 are revealed. It is found that truncated octahedrons are easily formed in Ti doping LiMn2O4 material. Structural characterizations reveal that most of the Ti4+ ions are composed into the spinel to form a more stable spinel LiTixMn2−xO4 phase framework in bulk. However, a portion of Ti4+ ions occupy 8a sites around the {001} plane surface to form a new TiMn2O4-like structure. The combination of LiTixMn2−xO4 frameworks in bulk and the TiMn2O4-like structure at the surface may enhance the stability of the spinel LiMn2O4. Our findings demonstrate the critical role of Ti doping in the surface chemical and structural evolution of LiMn2O4 and may guide the design principle for viable electrode materials.

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“…22,23 By doping other metal ions with strong bonding force at the manganese site of LiMn 2 O 4 to replace part of Mn 3+ , for example, Al 3+ , Co 3+ , or Cr 3+ , doping modification can delay the lattice distortion or structural collapse caused by the Jahn-Teller effect, thereby improving the stability of spinel structure and improving the cycle life of charge and discharge. [24][25][26][27] Yu et al 28 , and the long-term charge/discharge of 1000 cycles is achieved. At high current rates of 5C and 10C, more than 61% of the capacity can be maintained after 1000 cycles.…”

Section: Introductionmentioning

confidence: 99%

Preparation and electrochemical properties of Al‐F co‐doped spinel LiMn ₂ O ₄ single‐crystal material for lithium‐ion battery

Luo

Wang

et al. 2021

Intl J of Energy Research

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Summary Spinel LiMn2O4 has the advantages of high voltage, high safety, low pollution, low cost, and rich resources. However, its low initial capacity, rapid‐cycle decay, and other factors hinder its commercialization process. In this paper, a pure phase LiMn2O4 is synthesized by a high‐temperature solid‐phase method, and the element doping is used to modify it to improve its cycle performance. The results show that the optimal process conditions for preparing LiMn2O4 are: the Li/Mn ratio is 1.05:2, the calcination temperature is 780°C, and the calcination time is 15 hours. X‐ray diffractometer reveals that the samples prepared by Al3+ and F− co‐doping are still typical spinel structures. Scanning electron microscope shows that the sample is single‐crystal Li1.05Al0.02Mn1.98F0.02O3.98 with uniform grain distribution and regular morphology. The sample has excellent cycle performance, and its initial discharge specific capacity is 115.5 mAh g−1 at 0.1C. The capacity retention rate is still above 80% after 367 cycles, and the specific capacity is 90.3 mAh g−1. The Al‐F co‐doped LiMn2O4 single‐crystal material can effectively inhibit the Jahn‐Teller effect, alleviate the dissolution of Mn, as well as increase the diffusion channel of Li+. This work provides a theoretical basis for promoting the development of LiMn2O4 cathode materials for lithium‐ion batteries.

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High electrochemical stability Al-doped spinel LiMn2O4 cathode material for Li-ion batteries

Cited by 105 publications

References 32 publications

Advances in Materials Design for All-Solid-state Batteries: From Bulk to Thin Films

Advances in Materials Design for All-Solid-state Batteries: From Bulk to Thin Films

Atomic Insights into Ti Doping on the Stability Enhancement of Truncated Octahedron LiMn2O4 Nanoparticles

Preparation and electrochemical properties of Al‐F co‐doped spinel LiMn ₂ O ₄ single‐crystal material for lithium‐ion battery

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High electrochemical stability Al-doped spinel LiMn2O4 cathode material for Li-ion batteries

Cited by 105 publications

References 32 publications

Advances in Materials Design for All-Solid-state Batteries: From Bulk to Thin Films

Advances in Materials Design for All-Solid-state Batteries: From Bulk to Thin Films

Atomic Insights into Ti Doping on the Stability Enhancement of Truncated Octahedron LiMn2O4 Nanoparticles

Preparation and electrochemical properties of Al‐F co‐doped spinel LiMn 2 O 4 single‐crystal material for lithium‐ion battery

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Preparation and electrochemical properties of Al‐F co‐doped spinel LiMn ₂ O ₄ single‐crystal material for lithium‐ion battery