Industrial modification comparison of Ni-Rich cathode materials towards enhanced surface chemical stability against ambient air for advanced lithium-ion batteries

Xia, Yang; Chen, Anqi; Wang, Kun; Mao, Qinzhong; Huang, Hui; Zhang, Jun; He, Xinping; Gan, Yongping; Xiao, Zhen; Zhang, Wenkui

doi:10.1016/j.cej.2022.138382

Cited by 26 publications

(12 citation statements)

References 51 publications

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“…Moreover, the superior cycle performance of the NCM83-Nb1-PANI1 sample also manifested in the limited decay of the average discharge voltage during the long-term cycling (Figure b). The polarization caused by the harmful interface side reactions of Ni-rich NCM cathode materials seriously affects the electrochemical performance . After 200 cycles, the voltage decay for NCM83-Nb1-PANI1 is 0.185 mV per cycle, while the value for NCM83-Nb1.0 is 0.917 mV per cycle, proving the effectiveness of the PANI coating in suppressing the polarization effect, ensuring structural integrity, and preventing the phase transition of the cathode material. − As seen in Figure d, the NCM83-Nb1-PANI1 cathode outperforms the NCM83 and NCM83-Nb1.0 cathodes electrochemically at a higher rate of 10 C. Meanwhile, we tested the electrochemical performance of the as-prepared NCM and NCM83-Nb1-PANI1 cathodes (Figure e–g); the NCM83-Nb1-PANI1 exhibits higher capacity retention of 81.54% compared with that of the pristine NCM83 of 63.49% at a high temperature of 45 °C.…”

Section: Resultsmentioning

confidence: 93%

Synergistic Strategy Using Doping and Polymeric Coating Enables High-Performance High-Nickel Layered Cathodes for Lithium-Ion Batteries

Chang

Yan

et al. 2023

J. Phys. Chem. C

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As one of the most promising cathode materials for lithium-ion batteries, nickel-rich layered oxide LiNi0.83Co0.11Mn0.06O2 (NCM83) has an inherent issue with rapid capacity decay caused by phase change and interface side reactions during the charge/discharge cycling. Herein, an effectively synergistic strategy for improving the structural stability and electrochemical performance of NCM83 cathodes has been proposed, combining surface polymeric coating with bulk doping by the high-temperature solid-phase method. The comprehensive results demonstrate that the niobium (Nb) element can be successfully bulk-doped into the crystal lattice, which could increase the layer spacing, thus stabilizing the crystal structure and minimizing the Li+/Ni2+ mixing in the as-prepared NCM83 cathode. Meanwhile, a small amount of Nb in the form of oxide and a layer of polyaniline (PANI) was coated on the NCM83 cathode’s surface. This not only can prevent electrolyte erosion and inhibit side reactions but also can effectively improve the transport coefficient of Li+ during the charge and discharge process. The optimized NCM83 cathode exhibited outstanding discharge-specific capacity (236.79 mAh g–1 at 0.2 C rate and 215.67 mAh g–1 at 2 C rate), stable cycling performance (capacity retention of 84.4% after 100 cycles at 2 C), and excellent rate performance (150.58 mAh g–1 at 10 C) by taking advantage of the synergistic effects. The synergistic strategy using Nb doping in combination with a surface polymeric coating can enhance the fundamental understanding of the high-nickel layered oxide cathodes for lithium-ion batteries.

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Section: Resultsmentioning

confidence: 93%

Synergistic Strategy Using Doping and Polymeric Coating Enables High-Performance High-Nickel Layered Cathodes for Lithium-Ion Batteries

Chang

Yan

et al. 2023

J. Phys. Chem. C

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“…In general, for the same material under the same test conditions, the higher the charging voltage plateau, the greater the kinetic hindrance of the battery, which means a severer polarization of the electrode. 23 Further, electrochemical impedance spectroscopy was carried out to study the changes in the kinetics of the NCM and Y2-NCM cathode materials before and after air storage. As illustrated in Figure 7e, the Nyquist plots of all samples are composed of intercept points in the high frequency region, half circles in the midhigh frequency region, and sloping lines in the low frequency region.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Especially, the median voltage difference of the NCM sample is 0.0706 V, which is much higher than that of the Y2-NCM sample (0.0293 V). In general, for the same material under the same test conditions, the higher the charging voltage plateau, the greater the kinetic hindrance of the battery, which means a severer polarization of the electrode …”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the electrodes of lithium-ion batteries undergo several steps from materials processing to cell assembly, and the cathode material inevitably comes into contact with air and undergoes degradation, which may adversely affect various aspects of the battery performance. , On the one hand, the Ni-rich cathode materials can lead to the formation of electrochemically inactive impurity species (LiOH and Li 2 CO 3 ) on the surface as the particles react with CO 2 and H 2 O during storage in an ambient environment. This changes the chemical state of the material surface and increases the impedance of the electrodes, which has a serious impact on the stability of the material structure, the safety, and the electrochemical performance of the battery. , On the other hand, during the synthesis of Ni-rich Co-less cathode materials, excess Li 2 O and LiOH generated on the surface by exposure to ambient air increase the pH and moisture absorption ability of the powder, , thus providing a large amount of OH – during electrode slurry preparation, which disrupted the structure of the PVDF (polyvinylidene fluoride) binder and led to serious slurry gelation. − …”

Section: Introductionmentioning

confidence: 99%

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Ni-Rich Co-less Cathode Materials with LiYO₂ and Y³⁺ Modification Toward Improved Storage Performance against Ambient Air for Lithium-Ion Batteries

Luo,

Hu,

Wang

et al. 2023

ACS Sustainable Chem. Eng.

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Despite many advantages of Ni-rich Co-less cathode materials (Ni ≥ 90%), further applications of such materials are limited by the extreme sensitivity to the air environment. Herein, cathode material with the optimal amount of yttrium modification is selected for comparison with the bare NCM. The differences of various physicochemical indexes between the two materials before and after exposure to air environment treatment are evaluated comprehensively by various characterization methods, such as XPS, SEM, EDS, XRD, HRTEM, EIS, etc. Impressively, the formation of undesirable residual lithium compounds was significantly suppressed due to the effective protection of the LiYO 2 -coated nanolayer and the doping of Y 3+ , which prolonged the lifetime of environmental storage. In addition, the Y2-NCM cathode maintained good cycling stability and low impedance after 4 weeks of exposure to ambient air. This work provides a method to reduce the air sensitivity of Ni-rich, Co-less cathode materials.

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“…[156,157] Due to its hot spot features, great efforts have been devoted in lithium-ion batteries to obtain enhanced electrochemical performances. [158] To obtain high-performance LIBs with high capacity, superior rate performance and longlife span, the active materials of the anodes and cathodes are of great importance. As for active materials, architectures, morphologies, crystal structure, and compositions determine the theoretical capacity, reaction kinetics, and structure stability.…”

Section: Lithium-ion Batteriesmentioning

confidence: 99%

Microbe‐Mediated Biosynthesis of Multidimensional Carbon‐Based Materials for Energy Storage Applications

Shen

Chen

Zhou

et al. 2023

Advanced Energy Materials

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Biosynthesis methods are considered to be a promising technology for engineering new carbon‐based materials or redesigning the existing ones for specific purposes with the aid of synthetic biology. Lots of biosynthetic processes including metabolism, fermentation, biological mineralization, and gene editing have been adopted to prepare novel carbon‐based materials with exceptional properties that cannot be realized by traditional chemical methods, because microbes evolved to possess special abilities to modulate components/structure of materials. In this review, the recent development on carbon‐based materials prepared via different biosynthesis methods and various microbe factories (such as bacteria, yeasts, fungus, viruses, proteins) are systematically reviewed. The types of biotechniques and the corresponding mechanisms for the synthesis of carbon‐based materials are outlined. This review also focuses on the structural design and compositional engineering of carbon‐based nanostructures (e.g., metals, semiconductors, metal oxides, metal sulfides, phosphates, Mxenes) derived from biotechnology and their applications in electrochemical energy storage devices. Moreover, the relationship of the architecture–composition–electrochemical behavior and performance enhancement mechanism is also deeply discussed and analyzed. Finally, the development perspectives and challenges on the biosynthetic carbons are proposed and may pave a new avenue for rational design of advanced materials for the low‐carbon economy.

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Industrial modification comparison of Ni-Rich cathode materials towards enhanced surface chemical stability against ambient air for advanced lithium-ion batteries

Cited by 26 publications

References 51 publications

Synergistic Strategy Using Doping and Polymeric Coating Enables High-Performance High-Nickel Layered Cathodes for Lithium-Ion Batteries

Synergistic Strategy Using Doping and Polymeric Coating Enables High-Performance High-Nickel Layered Cathodes for Lithium-Ion Batteries

Ni-Rich Co-less Cathode Materials with LiYO₂ and Y³⁺ Modification Toward Improved Storage Performance against Ambient Air for Lithium-Ion Batteries

Microbe‐Mediated Biosynthesis of Multidimensional Carbon‐Based Materials for Energy Storage Applications

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Industrial modification comparison of Ni-Rich cathode materials towards enhanced surface chemical stability against ambient air for advanced lithium-ion batteries

Cited by 26 publications

References 51 publications

Synergistic Strategy Using Doping and Polymeric Coating Enables High-Performance High-Nickel Layered Cathodes for Lithium-Ion Batteries

Synergistic Strategy Using Doping and Polymeric Coating Enables High-Performance High-Nickel Layered Cathodes for Lithium-Ion Batteries

Ni-Rich Co-less Cathode Materials with LiYO2 and Y3+ Modification Toward Improved Storage Performance against Ambient Air for Lithium-Ion Batteries

Microbe‐Mediated Biosynthesis of Multidimensional Carbon‐Based Materials for Energy Storage Applications

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Ni-Rich Co-less Cathode Materials with LiYO₂ and Y³⁺ Modification Toward Improved Storage Performance against Ambient Air for Lithium-Ion Batteries