Highly conductive 3D structural carbon network-encapsulated Ni-rich LiNi0.8Co0.1Mn0.1O2 as depolarized and passivated cathode for lithium-ion batteries

Hwang, Jeonguk; Do, Kwanghyun; Ahn, Hye Shin

doi:10.1016/j.cej.2020.126813

Cited by 52 publications

(37 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…42 Higher discharge capacity of the rGO−ZrO 2 -coated cathode in the first cycle can be due to an increase in the electronic conductivity between NCM811 particles and reduction in electrode resistance and also accelerated and facilitated transport of Li + ion through diffusion channels provided by the rGO sheets. 22,24,25 After 100 cycles, the ZrO 2 -coated cathode shows discharge capacities of 142.1 and 137.3 mA h g −1 , which are significantly higher than 124.3 and 105.2 mA h g −1 of the pristine sample at 25 and 55 °C and 1C. This can be explained by the reduction in the contact surface of the cathode by the ZrO 2 coating, which prevents unwanted side reactions and cathode degradation.…”

Section: Resultsmentioning

confidence: 94%

“…Despite the shielding effect of the ZrO 2 coating, this sample showed a low discharge capacity. To compensate for such negative influences, it is important to consider conductive coating materials, including carbon networks, reduced graphene oxide (rGO), and Ag NPs . The presence of a conductive coating on the surface of cathode particles provides conductive pathways that increase the electronic conductivity between particles and reduce the electrode resistance.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of a conductive coating on the surface of cathode particles provides conductive pathways that increase the electronic conductivity between particles and reduce the electrode resistance. Also, the conductive layer offers diffusion channels, which enable rapid Li + ion diffusion, resulting in accelerated and facilitated transport of Li + ions. ,, However, these coatings are less effective in maintaining the structure of cathode materials. An intelligent solution for improving all of the properties at once could be the use of a combination of two coating materials, in which one component improves the structural stability and the other one boosts the ion/electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced Electrochemical Performance and Thermal Stability of ZrO₂- and rGO–ZrO₂-Coated Li[Ni_0.8Co_0.1Mn_0.1]O₂ Cathode Material for Li-Ion Batteries

Azar

Khollari

Esmaeili

et al. 2020

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) has been considered as a promising cathode for Li-ion batteries (LIBs) due to its high electrochemical capacity and low cost; however, poor cycling stability is one of the main restricting factors in industrial applications of the NCM811 cathode material. Notably, the capacity fading and low structural stability of NCM811 are intensified at elevated temperatures. ZrO 2 -and composite rGO−ZrO 2 -coated NCM811 were fabricated by a facile wet chemical method and evaluated at 25 and 55 °C to overcome these impediments. The ZrO 2 coating provides superior cycling and thermal stability and perfectly protects the cathode active material from deleterious side reactions, and HF attacks by suppressing the direct contact of NCM811 particles and electrolytes. Despite these advantages, the discharge capacity of the ZrO 2 -coated cathode material (166.3, 187.7 mAh g −1 ) is slightly lower than that of the pristine cathode (171.7, 193.0 mAh g −1 ) due to the insulative nature of ZrO 2 NPs, after one cycle at ambient and elevated temperatures. The first cycle discharge capacity increased to 185.9 and 206.7 mAh g −1 at 25 and 55 °C, respectively, with the rGO−ZrO 2 -coated cathode material. The capacity retention reached 92.4 and 83.3%, showing high capacities of 171.8 and 172.3 mAh g −1 at 1C after 100 cycles at 25 and 55 °C, whereas the pristine cathode material exhibited low retention values of 72.4 and 54.5% with discharge capacities of 124.3 and 105.2 mAh g −1 under the same conditions, respectively. The incorporation of rGO into the coating can make up for the ZrO 2 coating imperfection and, at the same time, can enhance the ion/electron conductivity of the electrode by providing a conductive network on the surface of the cathode material. In light of the fact that ZrO 2 -and composite rGO−ZrO 2 -coated NCM811 cathode materials exhibit superior performance; they can pave the way for industrial applications of high-energy-density lithium-ion batteries. KEYWORDS: LiNi 0.8 Co 0.1 Mn 0.1 O 2 , nanocoating, reduced graphene oxide, ZrO 2 , thermal stability, lithium-ion batteries

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Electrochemical Performance and Thermal Stability of ZrO₂- and rGO–ZrO₂-Coated Li[Ni_0.8Co_0.1Mn_0.1]O₂ Cathode Material for Li-Ion Batteries

Azar

Khollari

Esmaeili

et al. 2020

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…Kong et al [339] Conductive carbon-Al Guo et al [340] Li Hwang et al [343] 6-amino- exceptional electrochemical characteristics to meet this demand. The Ni-rich cathode materials assimilate advantages of Ni, Mn, and Co have attained huge consideration from government, scientists, and industrial sectors due to their high capacity and rate capability.…”

Section: Discussionmentioning

confidence: 99%

Recent Advances in Enhanced Performance of Ni‐Rich Cathode Materials for Li‐Ion Batteries: A Review

et al. 2022

View full text Add to dashboard Cite

High energy Li‐ion batteries (LIBs) have garnered substantial consideration in recent years for their utilization in many fields like communication, transportation, and aviation. As the cathode is the crucial component of LIBs, so by enhancing its electrochemical performance, the capacity, rate capability, as well as cyclability of batteries can be enhanced. Ni‐rich cathode materials (LiNi x Mn y Co1−x−y O2, x ≥ 0.5) have been accredited for their benefits in enhanced capacity, high working voltage, and low manufacturing cost. The high Ni content is accountable for the exceptional capacity but the utilization in the commercialized LIBs is mired by their electrochemical cycling issues like capacity fading, voltage decay, and safety hazard. To overcome these obstructions, a variety of methodologies have been adopted like doping, coating, and comodification of these cathode materials. An inclusive study of Ni‐rich cathode materials, their degradation mechanism, and the strategies is conferred, which have been employed in recent years to overcome the challenges faced by these materials in their commercialization.

show abstract

“…LiNi 0.8 Co 0.1 Mn 0.1 O 2 has been also doped with reduced graphene oxide (rGO) [152] and with a La 2 Zr 2 O 7 coating for Zr doping (cycling behavior shown in Figure 6c) [153]. Finally, other modification strategies for the same active material include surface modification after washing by H 3 BO 3 [154], 3D carbon network using 6-amino-4-hydroxy-2naphthalenesulfonic acid (AHNS)-functionalized rGO and carbon nanotubes (CNTs) [155], partially substitution of Co for Fe [156], and adding ethylene glycol (EG) and surfactant polyvinylpyrrolidone (PVP) [157].…”

Section: Active Cathode Materialsmentioning

confidence: 99%

Recent Advances on Materials for Lithium-Ion Batteries

et al. 2021

View full text Add to dashboard Cite

Environmental issues related to energy consumption are mainly associated with the strong dependence on fossil fuels. To solve these issues, renewable energy sources systems have been developed as well as advanced energy storage systems. Batteries are the main storage system related to mobility, and they are applied in devices such as laptops, cell phones, and electric vehicles. Lithium-ion batteries (LIBs) are the most used battery system based on their high specific capacity, long cycle life, and no memory effects. This rapidly evolving field urges for a systematic comparative compilation of the most recent developments on battery technology in order to keep up with the growing number of materials, strategies, and battery performance data, allowing the design of future developments in the field. Thus, this review focuses on the different materials recently developed for the different battery components—anode, cathode, and separator/electrolyte—in order to further improve LIB systems. Moreover, solid polymer electrolytes (SPE) for LIBs are also highlighted. Together with the study of new advanced materials, materials modification by doping or synthesis, the combination of different materials, fillers addition, size manipulation, or the use of high ionic conductor materials are also presented as effective methods to enhance the electrochemical properties of LIBs. Finally, it is also shown that the development of advanced materials is not only focused on improving efficiency but also on the application of more environmentally friendly materials.

show abstract

Highly conductive 3D structural carbon network-encapsulated Ni-rich LiNi0.8Co0.1Mn0.1O2 as depolarized and passivated cathode for lithium-ion batteries

Cited by 52 publications

References 73 publications

Enhanced Electrochemical Performance and Thermal Stability of ZrO₂- and rGO–ZrO₂-Coated Li[Ni_0.8Co_0.1Mn_0.1]O₂ Cathode Material for Li-Ion Batteries

Enhanced Electrochemical Performance and Thermal Stability of ZrO₂- and rGO–ZrO₂-Coated Li[Ni_0.8Co_0.1Mn_0.1]O₂ Cathode Material for Li-Ion Batteries

Recent Advances in Enhanced Performance of Ni‐Rich Cathode Materials for Li‐Ion Batteries: A Review

Recent Advances on Materials for Lithium-Ion Batteries

Contact Info

Product

Resources

About

Highly conductive 3D structural carbon network-encapsulated Ni-rich LiNi0.8Co0.1Mn0.1O2 as depolarized and passivated cathode for lithium-ion batteries

Cited by 52 publications

References 73 publications

Enhanced Electrochemical Performance and Thermal Stability of ZrO2- and rGO–ZrO2-Coated Li[Ni0.8Co0.1Mn0.1]O2 Cathode Material for Li-Ion Batteries

Enhanced Electrochemical Performance and Thermal Stability of ZrO2- and rGO–ZrO2-Coated Li[Ni0.8Co0.1Mn0.1]O2 Cathode Material for Li-Ion Batteries

Recent Advances in Enhanced Performance of Ni‐Rich Cathode Materials for Li‐Ion Batteries: A Review

Recent Advances on Materials for Lithium-Ion Batteries

Contact Info

Product

Resources

About

Enhanced Electrochemical Performance and Thermal Stability of ZrO₂- and rGO–ZrO₂-Coated Li[Ni_0.8Co_0.1Mn_0.1]O₂ Cathode Material for Li-Ion Batteries

Enhanced Electrochemical Performance and Thermal Stability of ZrO₂- and rGO–ZrO₂-Coated Li[Ni_0.8Co_0.1Mn_0.1]O₂ Cathode Material for Li-Ion Batteries