Synthesis and characterization of Mo-doped LiNi 0.5 Co 0.2 Mn 0.3 O 2  cathode materials prepared by a hydrothermal process

Li, Yunjiao; Su, Qianye; Han, Qing; Li, Puliang; Li, Ling; Xu, Chunrui; Cao, Xinlong; Cao, Guolin

doi:10.1016/j.ceramint.2016.10.038

Cited by 52 publications

(30 citation statements)

References 28 publications

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“…In 1991, SONY launched the first commercial lithium-ion battery material LCO, then LNO, modified LMO, and coated LFP were developed as the candidates for the replacement of LCO. However these materials all have their own drawbacks which limit their large-scale applications to power electric vehicles (EV) and hybrid electric vehicles (HEV) [14,15].…”

Section: Introductionmentioning

confidence: 99%

Structural, morphological and electrochemical investigation of LiNi0.6Co0.2Mn0.2O2 cathode material synthesized in different sintering conditions

Xia

Nie

Wang

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

Structural, morphological and electrochemical investigation of LiNi0.6Co0.2Mn0.2O2 cathode material synthesized in different sintering conditions

Xia

Nie

Wang

et al. 2015

Ceramics International

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“…A wide range of dopants such as Al, Mg, Ti, Mo, Nb, and Na has been introduced into the nickel-rich cathode materials. [86][87][88][89][90][91][92][93][94][95][96][97][98] The mechanisms about improving the cathode stability from the doping was closely related to (1) the introduction of the electrochemically inactive elements into the host structure, (2) prevention of the undesired phase transition from the layered structure to the rock-salt like structure, and (3) promotion of the lithium ion transport due to increased lithium slab distance by the dopants. [21] Among many dopants, the Al and Mg are considered as the most appealing elements due to their low cost.…”

Section: Dopingmentioning

confidence: 99%

“…Representative approaches include the doping, [86][87][88][89][90][91][92][93][94][95][96][97][98] morphological control of the primary particle, [99][100][101][102][103][104] the cathode surface modification, [105][106][107][108][109][110] and the primary particle coating, [35,37,[111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126] which will be discussed below.…”

Section: Strategies To Realize Commercializationmentioning

confidence: 99%

Prospect and Reality of Ni‐Rich Cathode for Commercialization

Kim

Lee

Cha

et al. 2017

Advanced Energy Materials

665

582

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practical candidate for the wide application of the LIBs with respect to the reversible capacity, rate capability, and capital cost. [4][5][6][7] In terms of nickel contents, the nickel-rich cathodes with nickel content above 80% have advantages in gravimetric capacity, allowing high gravimetric energy density, compared with the nickel content less than 80%. Currently, the nickel-rich cathodes with the amount of nickel less than 60% are fully commercialized. However, the nickel-rich cathodes with nickel content of ≥80% still have many difficulties in the commercialization with respect to powder properties and electrode fabrication process.The unstable powder properties originate from residual lithium compounds such as LiOH and Li 2 CO 3 that formed by the spontaneous reduction of sensitive trivalent nickel ions during the synthesis process and storage in air. [8][9][10][11] The Li 2 CO 3 significantly promotes the gas evolution and increase the moisture of the cathode powder, which strongly related to the safety issue. [12][13][14] Furthermore, the LiOH on the cathode increases the powder pH value, causing the gelation of the slurry during the electrode fabrication process. The nickel-rich cathode with nickel content of ≤60% have acceptable amount of residual lithium compounds for the practical use. By contrast, the cathode with amount of nickel of ≥80% should be treated by additional process to reduce the residual lithium compounds ( Table 1). Furthermore, other powder properties, such as powder pH and moisture, should be carefully controlled when nickel contents were exceeded of ≥80%. Thus, for the practical application of these cathode materials, most battery companies have adapted the washing process, in which the cathode power was stirred in purified water for 20-40 min. [15,16] The washing process could greatly reduce the residual lithium compounds and powder pH value. [15] However, the washing process not only increases process time and capital cost but also make the nickel-rich cathode more chemically sensitive than nonwashed cathodes. [16] More seriously, the water washing deteriorates the thermal stability of the nickel-rich cathodes, indicating that the washing process should be substituted by other methods for the battery safety.Another important factor for the commercialization of the nickel-rich cathodes is the electrode density directly related to the energy density. In general, the nickel-rich cathodesThe layered nickel-rich cathode materials are considered as promising cathode materials for lithium-ion batteries (LIBs) due to their high reversible capacity and low cost. However, several significant challenges, such as the unstable powder properties and limited electrode density, hindered the practical application of the nickel-rich cathode materials with the nickel content over 80%. Herein, important stability issues and in-depth understanding of the nickel-rich cathode materials on the basis of the industrial electrode fabrication condition for the commercialization of the nickel-rich cathode m...

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“…Layered-structure LiNi 0.5 Co 0.2 Mn 0.3 O 2 has been considered to be a promising cathode material for rechargeable lithium batteries due to its intrinsic characteristics, such as less toxicity, low cost and higher discharge capacity than currently used LiCoO 2 material [1][2][3][4]. However, the relatively poor cycling performance and rate capability at high voltage or high current density over numerous cycles, which originate from the side reactions between cathode material and electrolyte, leading to the formation of solid electrolyte interface layer with higher resistance, need to be improved [5].…”

Section: Introductionmentioning

confidence: 99%

Improvement of high voltage electrochemical performance of LiNi0.5Co0.2Mn0.3O2 cathode materials via Li2ZrO3 coating

Wang

et al. 2015

Ceramics International

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Synthesis and characterization of Mo-doped LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathode materials prepared by a hydrothermal process

Cited by 52 publications

References 28 publications

Structural, morphological and electrochemical investigation of LiNi0.6Co0.2Mn0.2O2 cathode material synthesized in different sintering conditions

Structural, morphological and electrochemical investigation of LiNi0.6Co0.2Mn0.2O2 cathode material synthesized in different sintering conditions

Prospect and Reality of Ni‐Rich Cathode for Commercialization

Improvement of high voltage electrochemical performance of LiNi0.5Co0.2Mn0.3O2 cathode materials via Li2ZrO3 coating

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