High-rate LiNi0.815Co0.15Al0.035O2 cathode material prepared by spray drying method for Li-ion batteries

Hou, Aolin; Liu, Yanxia; Ma, Libin; Chai, Fengtao; Zhang, Pengfei; Fan, Yuhang

doi:10.1007/s10854-019-02627-9

Cited by 7 publications

(6 citation statements)

References 38 publications

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“…Three main inflection areas are identified from the GITT curves of all samples. The biggest plateau around 3.7 V is consistent to the sharpest peak in the d Q /d V versus voltage (Figure a), indicating the H1 to M phase transformation . Upon the M to H2 transformations around 3.9 V, the diffusivity of B-NCA is the lowest, which may be an indication of the main structural collapsing is occurring at this stage for the sample.…”

Section: Resultsmentioning

confidence: 52%

“…The biggest plateau around 3.7 V is consistent to the sharpest peak in the dQ/dV versus voltage (Figure 8a), indicating the H1 to M phase transformation. 47 Upon the M to H2 transformations around 3.9 V, the diffusivity of B-NCA is the lowest, which may be an indication of the main structural collapsing is occurring at this stage for the sample. Similarly, third inflection around 4.15 V is the H2 to H3 transformation, possessing the higher Li + diffusivity for both of the CF-assisted NCA samples, indicating a higher preservation/recovery of the hexagonal layered structure.…”

Section: ■ Results and Discussionmentioning

confidence: 91%

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Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Kopuklu

Gómez-Martín

Winter

et al. 2021

ACS Sustainable Chem. Eng.

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Herein, we report a sacrificial carbon fiber (CF) template-assisted synthesis of LiNi0.8Co0.15Al0.05O2 (C-NCA) by the Pechini method. An anisotropic primary particle morphology with an interconnected microstructure is obtained, originating from local overheating and oxygen-deficient zones induced by combustion of the CFs during high-temperature lithiation. Moreover, the particles assembled around the CFs demonstrated denser packing compared to the reference bare NCA (B-NCA) synthetized in the absence of the CF template. The anisotropic surfaces facilitate ion transport and stabilize the structure for high voltage and temperature operation. C-NCA||Li metal cells exhibit a reversible capacity of 106 mA h g–1 at 10 C and are able to retain 96% of their initial capacity as the C-rate is reverted to 0.1 C. The state of health of C-NCA||graphite full cells remains at 70% after 200 cycles at 0.33 C within 2.8–4.3 V. The results outperform the B-NCA cell, exhibiting a significant loss over 66 cycles while delivering only 50% of its initial capacity. The synthesis method allows for a straightforward route for tailoring the particle size, shape, and crystallinity, enabling the development of stable nickel-rich cathode materials, even at an upper cutoff voltage of 4.5 V or an operating temperature of 60 °C.

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Section: Resultsmentioning

confidence: 52%

Section: ■ Results and Discussionmentioning

confidence: 91%

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Kopuklu

Gómez-Martín

Winter

et al. 2021

ACS Sustainable Chem. Eng.

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show abstract

“…All of the following cycles present three main peaks (3.74, 4.00, and 4.22 V) in the charge process, which are consistent with the d Q /d V profiles. Besides, the small peak belongs to a single-phase region of M. , Moreover, the CV curves at different scan rates of 0.05, 0.1, 0.15, 0.2, and 0.25 mV s –1 are also shown in Figure a–c. For the NCM-10 V samples, more obvious peaks can be observed than those of the NCM-5 V and NCM-15 V samples, indicating its better reaction kinetics in the charge/discharge process.…”

Section: Resultsmentioning

confidence: 87%

Electrochemically Engineering a Single-Crystal Nickel-Rich Layered Cathode

Fang

Zhang

et al. 2023

Inorg. Chem.

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Nickel-rich layered electrode material has been attracting significant attention owing to its high specific capacity as a cathode for lithium-ion batteries. Generally, the high-nickel ternary precursors obtained by traditional coprecipitation methods are micron-scale. In this work, the submicrometer single-crystal LiNi0.8Co0.1Mn0.1O2 (NCM) cathode is efficiently prepared by electrochemically anodic oxidation followed by a molten-salt-assisted reaction without the need of extreme alkaline environments and complex processes. More importantly, when prepared under optimal voltage (10 V), single-crystal NCM exhibits a moderate particle size (∼250 nm) and strong metal–oxygen bonds due to reasonable and balanced crystal nucleation/growth rate, which are conducive to greatly enhancing the Li+ diffusion kinetics and structure stability. Given that a good discharge capacity of 205.7 mAh g–1 at 0.1 C (1 C = 200 mAh g–1) and a superior capacity retention of 87.7% after 180 cycles at 1 C are obtained based on the NCM electrode, this strategy is effective and flexible for developing a submicrometer single-crystal nickel-rich layered cathode. Besides, it can be adopted to elevate the performance and utilization of nickel-rich cathode materials.

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“…Due to the limitations of production technology and equipment standards, the solid content of commercial WPU dispersions is generally lower than 40%, and that of cationic WPU dispersions is even lower at around 30%. This has led to increased production and transportation costs, rising commodity prices, and limited its application in certain fields 6–9 . Therefore, the development of novel methods for producing WPU dispersions with high solid content has become a key research area in the industry.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of high solid content cationic waterborne polyurethane with core‐shell structures

Mu,

Liu,

et al. 2023

J of Applied Polymer Sci

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In this study, core‐shell structured cationic waterborne polyurethane (WPU) dispersions with high solid content were prepared. To this end, prepolymer A was synthesized from polytetramethylene ether glycol (PTMG), isophorone diisocyanate (IPDI), castor oil (CO) and 1,4‐butanediol (BDO) without integration of the hydrophilic groups. Prepolymer B with hydrophilic groups was prepared from PTMG, IPDI, CO, BDO and N‐methyldiethanol amine (MDEA). WPU dispersion with a core‐shell structure could be generated by mixing, neutralizing, and emulsifying of the prepolymer A and the prepolymer B. The results indicated that the generation of WPU dispersions through this technique exhibited a milky appearance while the pH values range from 5.30 to 5.60. The optimal combination of prepolymer A and prepolymer B (at a ratio of 5:5) resulted in a dispersion with the highest solid content (50.4%), lowest viscosity (69 mPa·s), and narrowest particle size distribution. As the proportion of prepolymer A to prepolymer B decreases, the tensile strength of WPU film reduces while the elongation at break and glass transition temperature increases. Moreover, initially the contact angle with water was decreased instead of increase. However, modifications in a ratio of prepolymer A and B was not showed any significant impact on the thermal stability performance of the WPU films.

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High-rate LiNi0.815Co0.15Al0.035O2 cathode material prepared by spray drying method for Li-ion batteries

Cited by 7 publications

References 38 publications

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Electrochemically Engineering a Single-Crystal Nickel-Rich Layered Cathode

Preparation and characterization of high solid content cationic waterborne polyurethane with core‐shell structures

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High-rate LiNi0.815Co0.15Al0.035O2 cathode material prepared by spray drying method for Li-ion batteries

Cited by 7 publications

References 38 publications

Improved Lithium-Ion Transport Within the LiNi0.8Co0.15Al0.05O2 Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Improved Lithium-Ion Transport Within the LiNi0.8Co0.15Al0.05O2 Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Electrochemically Engineering a Single-Crystal Nickel-Rich Layered Cathode

Preparation and characterization of high solid content cationic waterborne polyurethane with core‐shell structures

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Product

Resources

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Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route

Improved Lithium-Ion Transport Within the LiNi_0.8Co_0.15Al_0.05O₂ Secondary Cathode Particles Through a Template-Assisted Synthesis Route