Surface-engineering of layered LiNi 0.815 Co 0.15 Al 0.035 O 2 cathode material for high-energy and stable Li-ion batteries

Li, Yugang; Yu, Haifeng; Hu, Yanjie; Jiang, Hao; Li, Chunzhong

doi:10.1016/j.jechem.2017.11.004

Cited by 39 publications

(11 citation statements)

References 38 publications

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“…Electronic conductive materials which provide electron transport networks on the surface of the cathode when acting as a coating layer, can help reduce the interfacial resistance [44,84,85,[194][195][196][197][198][199][200][201]. rGO sheets are considered as preferred coating candidates due to their highly conductive property and their ability to completely wrap the surface of cathode materials, as reported in several studies [84,85,196,197]. The electrical conductivity of rGO-encapsulated NCM622 surface is confirmed with atomic force microscopy (AFM) technique through current image with increasing applied voltage [196].…”

Section: Improving Electronic Conductivitymentioning

confidence: 99%

A review on the stability and surface modification of layered transition-metal oxide cathodes

et al. 2021

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An ever-increasing market for electric vehicles (EVs), electronic devices and others has brought tremendous attention on the need for high energy density batteries with reliable electrochemical performances. However, even the successfully commercialized lithium (Li)-ion batteries still face significant challenges with respect to cost and safety issues when they are used in EVs. From a cathode material point of view, layered transition-metal (TM) oxides, represented by LiMO 2 (M = Ni, Mn, Co, Al, etc.) and Li-/Mn-rich xLi 2 MnO 3 Á(1-x)LiMO 2 , have been considered as promising candidates because of their high theoretical capacity, high operating voltage, and low manufacturing cost. However, layered TM oxides still have not reached their full potential for EV applications due to their intrinsic stability issues during electrochemical processes. To address these problems, a variety of surface modification strategies have been pursued in the literature. Herein, we summarize the recent progresses on the enhanced stability of layered TM oxides cathode materials by different surface modification techniques, analyze the manufacturing process and cost of the surface modification methods, and finally propose future research directions in this area.

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Section: Improving Electronic Conductivitymentioning

confidence: 99%

A review on the stability and surface modification of layered transition-metal oxide cathodes

et al. 2021

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“…Moreover, EIS analyses at the 2nd and 100th cycles of the NCM-NMO and the pure NCM are given to reveal the mechanism of improved cycling stability (Figure e,f). Each spectrum is composed of two semicircles and one slope line . The former semicircle is related to surface film resistance ( R s ).…”

Section: Resultsmentioning

confidence: 99%

“…It is visible that the peak current (i p ) shows a fine linear relation with the square root of the sweep rate (ν 1/2 ) according to the classical Randles−Sevcik equation (Figure 5a,b), which means a Li + -diffusion-controlled behavior. 26,36,37 After calculation, the Li + diffusion coefficient during the delithiation/lithiation process of the NCM-NMO cathode (7.61 × 10 −10 cm 2 s −1 /1.92 × 10 −10 cm 2 s −1 ) is superior to the pure NCM cathode (3.08 × 10 −10 cm 2 s −1 /1.35 × 10 −10 cm 2 s −1 ). These results indicate that the NCM-NMO cathode possesses an enhanced lithium-ion transfer kinetics owing to the formation of a rapid electronic transfer pathway network with the help of a highly conductive NMO layer.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

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Exposed Surface Engineering of High-voltage LiNi_0.5Co_0.2Mn_0.3O₂ Cathode Materials Enables High-rate and Durable Li-ion Batteries

Jiang

et al. 2019

Ind. Eng. Chem. Res.

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Engineering the exposed surface of primary particles is a viable strategy to enhance the charging rate and structural stability of high-voltage LiN0.5C0.2M0.3O2 (NCM) cathode materials. Herein, we have developed highly conductive Na2MoO4 and engineered the exposed surface of NCM by a simple infiltration and subsequent low-temperature melting process. Such an ingenious strategy can achieve a high-quality and uniform coating layer for effectively decreasing the side effects between electrode materials and the electrolyte with a rapid electron transfer pathway network. Consequently, the as-obtained NCM-NMO delivers improved reversible capacities of 202.5 mAh g–1 at 0.2C and 129.0 mAh g–1 at 10C in 3.0–4.5 V, which is much higher than the unmodified NCM (86.1 mAh g–1@10C). After 100 cycles at 1C, 91% reversible capacity is retained with a negligible voltage plateau and structural change. This finding demonstrates a novel concept to modify the primary particles of cathode materials by engineering their exposed surface.

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“…In the field of electrode materials, the surface coating is usually one of the effective strategies to improve the electrochemical performance of layered cathode materials ( Chen et al, 2018 ; Li et al, 2018 ; Zhao et al, 2019 ; Li et al, 2020 ; Liang et al, 2020 ). Nonetheless, a single surface coating is difficult to fundamentally stabilize the crystal structure of the material.…”

Section: Materials Modificationmentioning

confidence: 99%

Nanostructure Nickel-Based Selenides as Cathode Materials for Hybrid Battery-Supercapacitors

Sun

Wang

et al. 2021

Front. Chem.

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Supercapacitors (SCs) have attracted many attentions and already became part of some high-power derived devices such as Tesla’s electric cars because of their higher power density. Among all types of electrical energy storage devices, battery-supercapacitors are the most promising for superior performance characteristics, including short charging time, high power density, safety, easy fabrication procedures, and long operational life. An SC usually consists of two foremost components, namely electrode materials, and electrolyte. The selection of appropriate electrode materials with rational nanostructured designs have resulted in improved electrochemical properties for high performance and has reduced the cost of SCs. In this review, we mainly spotlight the nickel-based selenides nanostructured which applied as high-performance cathode materials for SCs. Different nickel-based selenides materials are highlighted in various categories, such as nickel-cobalt-based bimetallic chalcogenides and nickel-M based selenides. Also, we mentioned material modification for this material type. Finally, the designing strategy and future improvements on nickel-based selenides materials for the application of SCs are also discussed.

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Surface-engineering of layered LiNi 0.815 Co 0.15 Al 0.035 O 2 cathode material for high-energy and stable Li-ion batteries

Cited by 39 publications

References 38 publications

A review on the stability and surface modification of layered transition-metal oxide cathodes

A review on the stability and surface modification of layered transition-metal oxide cathodes

Exposed Surface Engineering of High-voltage LiNi_0.5Co_0.2Mn_0.3O₂ Cathode Materials Enables High-rate and Durable Li-ion Batteries

Nanostructure Nickel-Based Selenides as Cathode Materials for Hybrid Battery-Supercapacitors

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Surface-engineering of layered LiNi 0.815 Co 0.15 Al 0.035 O 2 cathode material for high-energy and stable Li-ion batteries

Cited by 39 publications

References 38 publications

A review on the stability and surface modification of layered transition-metal oxide cathodes

A review on the stability and surface modification of layered transition-metal oxide cathodes

Exposed Surface Engineering of High-voltage LiNi0.5Co0.2Mn0.3O2 Cathode Materials Enables High-rate and Durable Li-ion Batteries

Nanostructure Nickel-Based Selenides as Cathode Materials for Hybrid Battery-Supercapacitors

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Exposed Surface Engineering of High-voltage LiNi_0.5Co_0.2Mn_0.3O₂ Cathode Materials Enables High-rate and Durable Li-ion Batteries