Optimized layered ternary LiNi0.5Co0.2Mn0.3O2 cathode materials modified with ultrathin Li3InCl6 fast ion conductor layer for lithium-ion batteries

Liu, Chengjin; Miao, Chang; He, Manyi; Wang, Jiale; Chen, Qiyan; Nie, Shuqing; Xiao, Wei

doi:10.1016/j.jpowsour.2023.232961

Cited by 23 publications

(7 citation statements)

References 39 publications

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“…As a result, there is a potential difference (indicated by ΔE) between Ni 2+ /Ni 4+ peaks. The increase of ΔE value augments the irreversibility of the electrode reaction [65,66] . Figure 9 shows that the polarization of the cathode material is significantly lower in graphene/Ta 2 O 5 co‐coated NCM523 (ΔE=0.098) compared to the uncoated NCM523 (ΔE=0.124).…”

Section: Resultsmentioning

confidence: 98%

“…The increase of ΔE value augments the irreversibility of the electrode reaction. [65,66] Figure 9 shows that the polarization of the cathode material is significantly lower in graphene/Ta 2 O 5 co-coated NCM523 (ΔE = 0.098) compared to the uncoated NCM523 (ΔE = 0.124). This implicates that the co-coating of graphene/Ta 2 O 5 could enhance the reversibility of Li + dein- tercalation, hence creating better cycling stability and rate performance for the GTa-NCM sample.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

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Graphene/Ta₂O₅ co‐coating to improve the electrochemical performance of cathode material LiNi_0.5Co_0.2Mn_0.3O₂ for lithium‐ion batteries

Zhang,

Dang,

et al. 2024

ChemistrySelect

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The cycling and rate capabilities of LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode material under high cut‐off voltage (≥4.5 V) and high current density have attracted much attention. However, the material‘s insufficient intrinsic electronic/ion conductivity and interface instability are still key issues restricting its electrochemical performance.In this paper, a graphene/Ta2O5 co‐coating layer is successfully fabricated on the surface of NCM523 to form a cathode material of GTa‐NCM523 to enhance both the electron and lithium‐ion transport during cathode operation. The GTa‐NCM523 cathode material achieves a discharge specific capacity of 147.4 mAh g−1 after 600 cycles at a voltage of 3.0–4.5 V and a rate of 1 C (180 mA g−1) with a capacity retention rate of 81.4 %. In contrast, the uncoated NCM523 only retains 63.2 % of its capability. At an elevated rate of 10 C (1800 mA g−1), the GTa‐NCM523 can achieve a discharge‐specific capacity of up to 113.5 mAh g−1, which is 43.7 % higher than the uncoated NCM523. The co‐coating layer can inhibit HF erosion and accelerate the movement of lithium‐ions and electrons, which account for the superior electrochemical characteristics of the co‐coating layer comprised of graphene and Ta2O5.

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Section: Resultsmentioning

confidence: 98%

Section: Electrochemical Propertiesmentioning

confidence: 99%

Graphene/Ta₂O₅ co‐coating to improve the electrochemical performance of cathode material LiNi_0.5Co_0.2Mn_0.3O₂ for lithium‐ion batteries

Zhang,

Dang,

et al. 2024

ChemistrySelect

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“…Similarly, the C dl value of Co-N/C-800@MCA-ZIF-67-C was much higher than that of samples carbonized at 700 °C (5.27 mF cm –2 ) and 900 °C (2.95 mF cm –2 ), as shown in Figure S10. A higher C dl combined with the porous structure facilitated the permeability of the electrolyte solution and thus improved the utilization of available active sites. − …”

Section: Resultsmentioning

confidence: 99%

Highly Accessible Co–N_x Active Sites-Doped Carbon Framework with Uniformly Dispersed Cobalt Nanoparticles for the Oxygen Reduction Reaction in Alkaline and Neutral Electrolytes

Liu,

Fan,

Cheng

et al. 2023

ACS Omega

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Porous carbon materials with nitrogen-coordinated transition metal active sites have been widely regarded as appealing alternatives to replace noble metal catalysts in oxygen-based electrochemical reaction activities. However, improving the electrocatalytic activity of transition-metal-based catalysts remains a challenge for widespread application in renewable devices. Herein, we use a simple one-step pyrolysis method to construct a Co nanoparticles/Co−N x -decorated carbon framework catalyst with a near-total external surface structure and uniform dispersion nanoparticles, which displays promising catalytic activity and superior stability for oxygen reduction reactions in both alkaline and neutral electrolytes, as evidenced by the positive shift of half-wave potential by 44 and 11 mV compared to 20% Pt/C. Excellent electrochemical performance originates from highly accessible Co nanoparticles/Co−N x active sites at the external surface structure (this is, exposing active sites). The thus-assembled liquid zinc−air battery using the synthesized electrocatalyst as the cathode material delivers a maximum power density of 178 mW cm −2 with an open circuit potential of 1.48 V and long-term discharge stability over 150 h.

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“…Characterized by the cleanliness and high efficiency of fuel cells, these energy transfer devices are considered to be promising emerging energy sources in the future. However, the sluggish dynamics process for oxygen reduction reaction (ORR) derived from complex mass transport and multielectron conduction processes limit the commercial application of fuel cells. − For this reason, various catalysts, including platinum-based materials, nonprecious metal nanoparticles, and metal-free carbon-based materials, are used. Basically, numerous research studies on catalyst have reported about improvements in the adsorption of O 2 and oxygen-related intermediates, strength of O–O band, and acceleration of the desorption of H 2 O. , Nowadays, the catalysts widely used in fuel cells are based on platinum due to their suitable appropriate adsorption and desorption energy barrier on their surface, while the expensive raw materialsand relatively poor stability and durability of platinum-based catalysts seriously restrict their large-scale applications .…”

Section: Introductionmentioning

confidence: 99%

N, S-Codoped Porous Carbon with Densely Edge Structure for Oxygen Reduction Reaction and Zinc-Air Battery

Yuan,

Fan,

Wang

et al. 2024

ACS Appl. Energy Mater.

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The sp 2 -hybridized electronic structure of pristine carbon results in poor kinetic processes in the oxygen reduction reaction (ORR) with a high energy barrier for the protoncoupled electron transfer process. Thus, designing numerous accessible defects by breaking the symmetric structure of carbon materials is conducive to reduce the energy barrier of the ORR. Meanwhile, the heteroatom doping strategy can also modify the electronic properties of neighboring carbon atoms to effectively activate the sp 2 -hybridized electronic structure of carbon nanomaterials. In this work, a defective carbon nanomaterial with densely accessible S, Ncodoped edge structures is synthesized via the sacrificial template method. The as-prepared catalyst (S−N−C-3) shows a high external surface area of 518.5 m 2 g −1 with an abundant edge structure. Meanwhile, the metal-free S−N−C-3 material shows an excellent half-wave potential (0.867 V) in alkaline solution. In addition, the discharge voltage of the assembled zinc−air battery from S−N−C-3 remains 1.24 V after 270 h of continuous operation, suggesting its superior durability. The excellent catalytic properties originate from the densely accessible N, S-codoped edge structure. The work would provide ideas for the design and synthesis of metal-free carbon-based electrocatalysts and the mechanism analysis of ORR.

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Optimized layered ternary LiNi0.5Co0.2Mn0.3O2 cathode materials modified with ultrathin Li3InCl6 fast ion conductor layer for lithium-ion batteries

Cited by 23 publications

References 39 publications

Graphene/Ta₂O₅ co‐coating to improve the electrochemical performance of cathode material LiNi_0.5Co_0.2Mn_0.3O₂ for lithium‐ion batteries

Graphene/Ta₂O₅ co‐coating to improve the electrochemical performance of cathode material LiNi_0.5Co_0.2Mn_0.3O₂ for lithium‐ion batteries

Highly Accessible Co–N_x Active Sites-Doped Carbon Framework with Uniformly Dispersed Cobalt Nanoparticles for the Oxygen Reduction Reaction in Alkaline and Neutral Electrolytes

N, S-Codoped Porous Carbon with Densely Edge Structure for Oxygen Reduction Reaction and Zinc-Air Battery

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Optimized layered ternary LiNi0.5Co0.2Mn0.3O2 cathode materials modified with ultrathin Li3InCl6 fast ion conductor layer for lithium-ion batteries

Cited by 23 publications

References 39 publications

Graphene/Ta2O5 co‐coating to improve the electrochemical performance of cathode material LiNi0.5Co0.2Mn0.3O2 for lithium‐ion batteries

Graphene/Ta2O5 co‐coating to improve the electrochemical performance of cathode material LiNi0.5Co0.2Mn0.3O2 for lithium‐ion batteries

Highly Accessible Co–Nx Active Sites-Doped Carbon Framework with Uniformly Dispersed Cobalt Nanoparticles for the Oxygen Reduction Reaction in Alkaline and Neutral Electrolytes

N, S-Codoped Porous Carbon with Densely Edge Structure for Oxygen Reduction Reaction and Zinc-Air Battery

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Graphene/Ta₂O₅ co‐coating to improve the electrochemical performance of cathode material LiNi_0.5Co_0.2Mn_0.3O₂ for lithium‐ion batteries

Graphene/Ta₂O₅ co‐coating to improve the electrochemical performance of cathode material LiNi_0.5Co_0.2Mn_0.3O₂ for lithium‐ion batteries

Highly Accessible Co–N_x Active Sites-Doped Carbon Framework with Uniformly Dispersed Cobalt Nanoparticles for the Oxygen Reduction Reaction in Alkaline and Neutral Electrolytes