Lithium‐Ion Batteries: Radially Oriented Single‐Crystal Primary Nanosheets Enable Ultrahigh Rate and Cycling Properties of LiNi0.8Co0.1Mn0.1O2 Cathode Material for Lithium‐Ion Batteries (Adv. Energy Mater. 15/2019)

Xu, Xing; Huo, Hua; Jian, Jiyuan; Wang, Liguang; Zhu, He; Xu, Sheng; He, Xiao; Yin, Geping; Du, Chunyu; Sun, Xueliang

doi:10.1002/aenm.201970051

Cited by 19 publications

(12 citation statements)

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“…As shown in Table 1 , the electronic conductivity of the NMC cathode material is 6.59 × 10 −5 S cm −1 , which is similar to the previous result reported by Xu (7.6 × 10 −5 S cm −1 ). [ 24 ] The electronic conductivity of the MS‐NMC, PP@MS‐1.0‐NMC, PP@MS‐2.0‐NMC, and PP@MS‐5.0‐NMC cathode materials is 4.48 × 10 −5 , 1.40 × 10 −4 , 1.29 × 10 −4 , and 1.08 × 10 −4 S cm −1 , respectively. Due to the inertness of MS, the electronic conductivity of the MS‐NMC electrode is lower than that of NMC electrode.…”

Section: Resultsmentioning

confidence: 99%

PEDOT:PSS @Molecular Sieve as Dual‐Functional Additive to Enhance Electrochemical Performance and Stability of Ni‐Rich NMC Lithium‐Ion Batteries

et al. 2020

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With upswing to fuel reserve concerns, the development of sustainable, clean, and safe energy-storage technologies is of much importance. [1] Thus, rechargeable lithiumion batteries have become a promising research topic. [2] Nowadays, the layered nickel-rich LiNi 1-x-y Co x Mn y O 2 (NMC) cathodes are the most promising options for lithium-ion batteries due to their high capacity, excellent electrochemical performance, and low cost. [3] However, to achieve the large-scale commercial application of nickel-rich NMC cathodes, several key challenges such as poor electrochemical stability and low thermal stability have to be solved. [4] One of the most concerning issues is surface structural degradation closely related to electrochemical and thermal stability. [4] Generally, the surface structure degradation of cathode materials is attributed to side reactions between the electrolyte and electrode. Due to the attack of residual water in the battery system, the electrolytes containing LiPF 6 will decompose to produce hydrogen fluoride (HF) [5] that will cause the excessive dissolution of the transition metal ion, which is harmful to the interface phase structure and particle integrity of cathode particles. [5,6] In addition, the nickel-rich NMC cathode can easily react with water and then form a thick uncontrollable cathode-electrolyte interface (CEI) layer on its surface during storage and recycling. [7] It has a negative impact on the efficient and uniform transport of lithium ions, which can cause polarization of the cathode, giving rise to stress concentration, cracks, and fragmentation, ultimately affecting the structural and electrochemical stability. [8] Moreover, it is worth noting that this problem becomes worse with high Ni content, high temperature, and a high cutoff voltage (>4.4 V versus Li þ /Li). For example, Jung et al. studied and compared the formation of surface contaminations on NMC811 and NMC111. [9] They found that NMC811 developed a surface layer of up to %10 nm thickness (nickel carbonate and minor nickel hydroxide) after ambient storage for 1 year, whereas no significant changes were observed on the NMC111 surface. [9] Qian et al found that the adsorption energy is À0.98, À0.37, and À0.54 eV for Ni─O, Co─O, and Mn─O bonds, respectively.

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Section: Resultsmentioning

confidence: 99%

PEDOT:PSS @Molecular Sieve as Dual‐Functional Additive to Enhance Electrochemical Performance and Stability of Ni‐Rich NMC Lithium‐Ion Batteries

et al. 2020

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“…Sun et al [110] synthesized micrometer-sized Ni-rich NCM811 secondary cathode materials consisting of radially aligned single-crystal primary particles to address the issue of particle cracks during cycles (Fig. 5d).…”

Section: Cathode Materials Design For Safe Libsmentioning

confidence: 99%

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

Duan

Tang

Dai

et al. 2019

Electrochem. Energ. Rev.

542

260

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Lithium-ion batteries (LIBs), with relatively high energy density and power density, have been considered as a vital energy source in our daily life, especially in electric vehicles. However, energy density and safety related to thermal runaways are the main concerns for their further applications. In order to deeply understand the development of high energy density and safe LIBs, we comprehensively review the safety features of LIBs and the failure mechanisms of cathodes, anodes, separators and electrolyte. The corresponding solutions for designing safer components are systematically proposed. Additionally, the in situ or operando techniques, such as microscopy and spectrum analysis, the fiber Bragg grating sensor and the gas sensor, are summarized to monitor the internal conditions of LIBs in real time. The main purpose of this review is to provide some general guidelines for the design of safe and high energy density batteries from the views of both material and cell levels.

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“…7 Arranging and orienting the primary nanoparticles within the microsphere can also alleviate microcrack generation. 18 Among these methods, removing the interparticle boundaries by growing singlecrystalline particles has emerged as a promising strategy. 9,[19][20][21] For instance, Fan et al 20 found that micron-sized quasi-singlecrystalline LiNi 0.83 Co 0.11 Mn 0.06 O 2 particles could efficiently restrain the generation of intergranular cracks and alleviate the accumulation of parasitic reactions.…”

Section: Introductionmentioning

confidence: 99%

An in situ formed inorganic conductive network enables high stability and rate capability of single-crystalline nickel-rich cathodes

et al. 2023

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Lithium‐Ion Batteries: Radially Oriented Single‐Crystal Primary Nanosheets Enable Ultrahigh Rate and Cycling Properties of LiNi_0.8Co_0.1Mn_0.1O₂ Cathode Material for Lithium‐Ion Batteries (Adv. Energy Mater. 15/2019)

Cited by 19 publications

References 0 publications

PEDOT:PSS @Molecular Sieve as Dual‐Functional Additive to Enhance Electrochemical Performance and Stability of Ni‐Rich NMC Lithium‐Ion Batteries

PEDOT:PSS @Molecular Sieve as Dual‐Functional Additive to Enhance Electrochemical Performance and Stability of Ni‐Rich NMC Lithium‐Ion Batteries

Building Safe Lithium-Ion Batteries for Electric Vehicles: A Review

An in situ formed inorganic conductive network enables high stability and rate capability of single-crystalline nickel-rich cathodes

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