“Mn-locking” effect by anionic coordination manipulation stabilizing Mn-rich phosphate cathodes

Zhang, Wei; Wu, Yulun; Dai, Yuhang; Xu, Zhenming; Liang, Huihui; Zheng, Li; Li, Shihao; Chen, Ruwei; Gao, Xuan; Zong, Wei Xing; Guo, Fei; Zhu, Jiexin; Dong, Haobo; Li, Jianwei; Ye, Chumei; Li, Simin; Wu, Feixiang; Zhang, Zhian; He, Guanjie; Lai, Yanqing; Parkin, Ivan P.

doi:10.1039/d3sc03095d

Cited by 25 publications

(14 citation statements)

References 61 publications

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“…The c / a value is also usually considered as an indicator of the level of layered ordering structure present. All samples exhibited a value greater than 4.9, signifying the superior layered ordering structure of the prepared cathode materials with minimal cation mixing. − When Al is introduced, the interlayer spacing expands, elevating the undelithiated values of c and c / a , both of which are beneficial for increasing the materials’ EC performance and Li + diffusion rate. − This result can be validated by theoretical calculations. In addition, the cathode material’s EC performance was significantly affected by the Li + /Ni 2+ cation mixing.…”

Section: Resultsmentioning

confidence: 67%

Understanding Electrochemical Performance Enhancement with Quaternary NCMA Cathode Materials

Dong,

Liu,

Leng

et al. 2023

Langmuir

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Ni-rich cathode materials show promise for use in lithium-ion batteries. However, a significant obstacle to their widespread adoption is the structural damage caused by microcracks. This research paper presents the synthesis of Ni-rich cathode materials, including LiNi0.8Co0.1Mn0.1O2 (referred to as NCM) and Li(Ni0.8Co0.1Mn0.1)0.98Al0.02O2 (referred to as NCMA), achieved through the high-temperature solid-phase method. Electrochemical (EC) testing results reveal the impressive EC performance of NCMA. NCMA exhibited a discharge capacity of 141.6 mAh g–1 and maintained a cycle retention rate of up to 74.92% after 300 cycles at a 1 C rate. In contrast, the NCM had a discharge capacity of 109.7 mAh g–1 and a cycle retention rate of 61.22%. Atomic force microscopy showed that the Derjaguin−Muller−Toporov (DMT) modulus value of NCMA exceeded that of NCM, signifying a greater mechanical strength of NCMA. Density functional theory calculations demonstrated that the addition of aluminum during the delithiation process led to the mitigation of anisotropic lattice changes and the stabilization of the NCMA structure. This improvement was attributed to the relatively stronger Al–O bonds compared to the Ni(Co, Mn)–O bonds, which reduced the formation of microcracks by enhancing NCMA’s mechanical strength.

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Section: Resultsmentioning

confidence: 67%

Understanding Electrochemical Performance Enhancement with Quaternary NCMA Cathode Materials

Dong,

Liu,

Leng

et al. 2023

Langmuir

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“…Consequently, sodium-ion batteries (SIBs), which share similar working mechanisms and cell congurations to LIBs but utilize abundant and low-cost sodium resources, present a potential solution for EESs. [3][4][5][6][7][8] To improve the comprehensive performance of SIBs, substantial efforts have been dedicated to key materials, especially cathode materials. There are various categories of cathode materials, including layered oxides, Prussian blue analogs, polyanionic compounds and organic frameworks.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, sodium-ion batteries (SIBs), which share similar working mechanisms and cell configurations to LIBs but utilize abundant and low-cost sodium resources, present a potential solution for EESs. 3–8…”

Section: Introductionmentioning

confidence: 99%

Developing an abnormal high-Na-content P2-type layered oxide cathode with near-zero-strain for high-performance sodium-ion batteries

Hu,

Li,

Liu

et al. 2024

Chem. Sci.

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“…Nowadays, sodium-ion batteries (SIBs) have been attracted various attention at energy storage field due to their high energy density, high safety and abundant resources of sodium. [1][2][3][4][5][6][7][8] However, the intrinsic large sodium ion radius (1.06 Å) usually leads to severe pulverization and sluggish transport kinetics of DOI: 10.1002/aenm.202303464 electrode materials in SIBs, yielding low reversible capacity and fast capacity fading. [9][10][11] Therefore, it is urgent to find advanced electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Electron Modulated and Phosphate Radical Stabilized 1T‐Rich MoS₂ for Ultra‐Fast‐Charged Sodium Ion Storage

Zhang,

Wang,

Shan

et al. 2023

Advanced Energy Materials

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Metallic phase molybdenum sulfide (1T‐MoS2) is considered as an attractive electrode material for sodium‐ion batteries (SIBs) owing to its abundant active sites, metallic conductivity and high theoretical capacity. Unfortunately, the thermodynamic unstable characteristic under natural conditions makes 1T‐MoS2 difficult to synthesize directly, which greatly hinders its further applications. Herein, an electron modulated and phosphate radical stabilized strategy is employed to construct stable 1T‐rich MoS2 (1T‐P‐MoS2). The PO43− groups are intercalated into MoS2 via a simple one‐step synthesis process, which enlarges the interlayer spacings and improves the insertion/extraction kinetics of Na+. Density functional theory (DFT) calculations and experiments demonstrate that the PO43− can give partial electrons to Mo upon PO43− intercalation, which triggers the reorganization of Mo 4d orbitals, resulting in a spontaneous phase transition of MoS2 from 2H to 1T phase, thereby enhancing the electrical conductivity of MoS2. The obtained 1T‐P‐MoS2 exhibits ultra‐fast charged properties (up to 277.1 mAh g−1 at 40 A g−1, discharged/charged within 25 s) and excellent cycling performance (up to 498.9 mAh g−1 after 300 cycles at 1 A g−1). This work provides a feasible technical solution and analyses the deep mechanisms on tuning of metal sulfide electrodes for advanced SIBs.

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“Mn-locking” effect by anionic coordination manipulation stabilizing Mn-rich phosphate cathodes

Abstract: High-voltage cathodes with high power and stable cyclability are needed for high-performance sodium-ion batteries. However, the low kinetics and inferior capacity retention from structural instability impede the development of Mn-rich...

Cited by 25 publications

References 61 publications

Understanding Electrochemical Performance Enhancement with Quaternary NCMA Cathode Materials

Understanding Electrochemical Performance Enhancement with Quaternary NCMA Cathode Materials

Developing an abnormal high-Na-content P2-type layered oxide cathode with near-zero-strain for high-performance sodium-ion batteries

Electron Modulated and Phosphate Radical Stabilized 1T‐Rich MoS₂ for Ultra‐Fast‐Charged Sodium Ion Storage

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“Mn-locking” effect by anionic coordination manipulation stabilizing Mn-rich phosphate cathodes

Abstract: High-voltage cathodes with high power and stable cyclability are needed for high-performance sodium-ion batteries. However, the low kinetics and inferior capacity retention from structural instability impede the development of Mn-rich...

Cited by 25 publications

References 61 publications

Understanding Electrochemical Performance Enhancement with Quaternary NCMA Cathode Materials

Understanding Electrochemical Performance Enhancement with Quaternary NCMA Cathode Materials

Developing an abnormal high-Na-content P2-type layered oxide cathode with near-zero-strain for high-performance sodium-ion batteries

Electron Modulated and Phosphate Radical Stabilized 1T‐Rich MoS2 for Ultra‐Fast‐Charged Sodium Ion Storage

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Product

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Electron Modulated and Phosphate Radical Stabilized 1T‐Rich MoS₂ for Ultra‐Fast‐Charged Sodium Ion Storage