Enhanced interfacial reaction interface stability of Ni-rich cathode materials by fabricating dual-modified layer coating for lithium-ion batteries

Wang, Shaoyi; Chu, Youqi; Pan, Qichang; Yang, Guangchang; Lai, Anjie; Liu, Zhiheng; Zheng, Fenghua; Hu, Sun; Huang, Youguo; Li, Qingyu

doi:10.1016/j.electacta.2020.137476

Cited by 39 publications

(19 citation statements)

References 49 publications

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“…The pristine LNCM electrode in Figure S4a,b shows extensive cracking and severe particle destruction after the 60°C storage test. These changes may allow the penetration of the electrolyte into the exposed surface and accelerate the side reaction, leading to a decrease in the capacity, which is consistent with the result in Figure 7A 57,58 . In contrast, the 1 wt% LNO‐LNCM electrode in Figures S4c,d showed significantly suppressed cracks and particle morphology.…”

Section: Results and Disscussionsupporting

confidence: 83%

“…These changes may allow the penetration of the electrolyte into the exposed surface and accelerate the side reaction, leading to a decrease in the capacity, which is consistent with the result in Figure 7A. 57,58 In contrast, the 1 wt% LNO-LNCM electrode in Figures S4c,d showed significantly suppressed cracks and particle morphology. This suggests that the LNO coating acts as a physical barrier that inhibits the side reaction and provides structural stability, resulting in excellent electrochemical performance even after harsh conditions such as high-temperature storage.…”

Section: Electrochemical Measurementssupporting

confidence: 82%

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Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Lee

Park

Seok

et al. 2022

Intl J of Energy Research

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High-Ni layered-oxide cathodes are the most prospective cathode materials for next-generation Li-ion batteries (LIBs) in electric vehicles (EVs) owing to their high specific capacity. However, High-Ni layered-oxide cathode materials exhibit inferior cyclability and low thermal stability owing to the side reaction between Ni 4+ and the electrolytes. To solve these surface-related problems, we proposed a strategy for forming LiNbO 3 (LNO)-with outstanding thermal stability and ionic conductivity-on a Ni-rich layered-oxide surface using polydopamine (PDA). The PDA formed on the transition metal hydroxide surface has copious catechol OH groups, which attract the Nb ions in the solution to form a LNO coating layer during the calcination process. The LiNi 0.8 Co 0.1 Mn 0.1 O 2 (pristine LNCM) electrode experiences enormous degradation when cycled after being subjected to severe conditions-such as a full charge and a 60 C storage test-but the LiNbO 3 -coated LNCM (LNO-LNCM) electrode exhibits particularly stable cycling performance. Furthermore, differential scanning calorimetry (DSC) results exhibited that the LNO coating notably ameliorated the thermal stability of the cathode material. As a result, our experimental results suggest that the development of cathode materials that can withstand greatly oxidized states and high-temperature environments is achievable.cathode materials, high-Ni layered-oxides, LiNbO 3 , lithium-ion batteries, polydopamine | INTRODUCTIONLithium-ion batteries (LIBs) have been used in diverse fields involving mobile devices and electric vehicles (EVs)-owing to their high operating voltage, high energy density, superior cyclability, and low selfdischarge rate. 1,2 However, current LIBs have technical limitations, including problems related to cost, durability, and mileage. In particular, the cathode of LIBs has many problems, including high price, low capacity, poor cycle life, and deterioration complications. 3,4 Accordingly, recent research on cathode materials has focused on refining and developing new cathode materials. 5,6 Across the various cathode materials, High-Ni layered-oxide cathodes have recently been in the spotlight because they have high energy density, high theoretical capacity ($200 mAh g À1 ), and a comparatively high operating voltage. 7,8 Recently, researchers have

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Section: Results and Disscussionsupporting

confidence: 83%

Section: Electrochemical Measurementssupporting

confidence: 82%

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Lee

Park

Seok

et al. 2022

Intl J of Energy Research

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“…16,[19][20][21][22] In addition, the formed alkaline lithium impurities will hinder the lithium ion transmission, leading to the improvement of the interface impedance and serious degradation of the cathode structure. [22][23][24] Overall, the existence of residual lithium is a major threat to the industrialization of nickel-rich materials.…”

Section: Introductionmentioning

confidence: 99%

Construction of a nickel-rich LiNi_0.83Co_0.11Mn_0.06O₂ cathode with high stability and excellent cycle performance through interface engineering

Zhang

Zhou

et al. 2023

Mater. Chem. Front.

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“…The popularity of consumer electronics and the rapid development of electric vehicles have put forward higher energy density and longer service life requirements for lithium-ion batteries (LIBs), which are mainly limited by cathode materials. − Among the various promising cathode materials, the nickel-rich layered oxides (LiNi x Co y Mn z O 2 , x ≥ 0.6, x + y + z = 1) attract widespread attention due to their extremely high reversible capacity that can even exceed 200 mAh g –1 when the charging voltage exceeds 4.5 V. Except for the contribution of cations, additional capacity is achieved by the redox reaction of anionic oxygen (O 2– /O 2 n – , where 1 < n < 2) during a high charging voltage. , However, Ni-rich materials suffer from severe phase transformation and surface side reactions that cause the capacity and voltage to fade during high-voltage cycling. − Therefore, many surface protectors, such as oxides (e.g., Al 2 O 3 , ZrO 2 , TiO 2 ), − phosphates (Li 3 PO 4 , FePO 4 , LiFePO 4 ), − and fluorides (AlF 3 , LiF, MgF 2 ), − were designed to mechanically restrain unwanted structural transformations and inhibit surface side reactions by avoiding direct contact between the cathode materials and the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Sr-Based Sub/Surface Integrated Layer and Bulk Doping to Enhance High-Voltage Cycling of a Ni-Rich Cathode Material

Wang

Chu

Nong

et al. 2022

ACS Sustainable Chem. Eng.

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LiNi0.8Co0.1Mn0.1O2 (NCM) can achieve a high capacity of more than 200 mAh g–1 at charging voltages above 4.5 V, but it suffers from severe capacity fading at a high voltage during cycling associated with the lattice oxygen evolution-induced phase and surface structure modifications. Therefore, the big challenge for improving electrochemical performance is suppressing the lattice oxygen loss at a high voltage. Here, a facile strategy to inhibit the lattice oxygen loss of a Ni-rich material at a high charging voltage by a simple Sr treatment method is reported. The Sr treatment leads to the formation of a Sr-based sub/surface integrated layer and induces the atomic rearrangement on the subsurface to form Sr-based perovskite-like Li x Sr1–x TMO3 (TM = Ni, Co and Mn) during the heat treatment process. The perovskite-like structure can adsorb the oxidized Oα– to oxygen vacancies, transplant the pumped charges from the oxidized Oα–, and reduce them back to O2– to inhibit the movement of oxidized oxygen anions at the charged NCM surface. Furthermore, the formed Sr1–x HPO4 outer layer can prevent NCM from corroding by HF in organic electrolytes. Meanwhile, bulk doping stabilizes the metal–oxygen bond by suppressing the Ni migration at a high charging voltage. The modified NCM thus exhibited a significantly enhanced high-voltage cycle stability with 82.3 and 80.1% of capacity retentions at 1C achieved after 250 cycles at 25 °C and 100 cycles at 60 °C, respectively. This work opened a new avenue to suppress the lattice oxygen loss via surface structure regulations in high-energy-density rechargeable batteries during high-voltage cycling.

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Enhanced interfacial reaction interface stability of Ni-rich cathode materials by fabricating dual-modified layer coating for lithium-ion batteries

Cited by 39 publications

References 49 publications

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Construction of a nickel-rich LiNi_0.83Co_0.11Mn_0.06O₂ cathode with high stability and excellent cycle performance through interface engineering

Sr-Based Sub/Surface Integrated Layer and Bulk Doping to Enhance High-Voltage Cycling of a Ni-Rich Cathode Material

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Enhanced interfacial reaction interface stability of Ni-rich cathode materials by fabricating dual-modified layer coating for lithium-ion batteries

Cited by 39 publications

References 49 publications

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Polydopamine‐induced nano‐coating layer for high stability of nickel‐rich cathode in secondary batteries

Construction of a nickel-rich LiNi0.83Co0.11Mn0.06O2 cathode with high stability and excellent cycle performance through interface engineering

Sr-Based Sub/Surface Integrated Layer and Bulk Doping to Enhance High-Voltage Cycling of a Ni-Rich Cathode Material

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Construction of a nickel-rich LiNi_0.83Co_0.11Mn_0.06O₂ cathode with high stability and excellent cycle performance through interface engineering