Three-in-one oxygen-deficient titanium dioxide in a pomegranate-inspired design for improved lithium storage

Sun, Siwei; Wang, Chao; Wang, Qin-Chao; Liu, Yingwei; Xie, Qihong; Zeng, Zhiyong; Li, Xiaoge; Han, Jie; Guo, Rong

doi:10.1016/j.jcis.2022.11.103

Cited by 10 publications

(2 citation statements)

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“…In particular, NaTi 2 (PO 4 ) 3 has been extensively studied as an advanced anode material for SIBs due to its low cost, high theoretical capacity (133 mA h g −1 ), and flat voltage plateau (approximately 2.1 V vs. Na + /Na). 16,17 The well-defined redox plateau and outstanding cycling performance of NTP allow it to surpass other anode materials such as hard carbon, [18][19][20][21] metal oxides, [22][23][24][25] and intermetallic compounds. 26,27 In NaTi 2 (PO 4 ) 3 , the tetrahedral PO 4 3− anion shares corners with covalently bonded TiO 6 octahedra, constituting a 3D framework with two Na ions.…”

Section: Introductionmentioning

confidence: 99%

“…The well-defined redox plateau and outstanding cycling performance of NTP allow it to surpass other anode materials such as hard carbon, 18–21 metal oxides, 22–25 and intermetallic compounds. 26,27 In NaTi 2 (PO 4 ) 3 , the tetrahedral PO 4 3− anion shares corners with covalently bonded TiO 6 octahedra, constituting a 3D framework with two Na ions.…”

Section: Introductionmentioning

confidence: 99%

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Tailoring the electronic structure of the NaTi₂(PO₄)₃ anode for high-performing sodium-ion batteries via defect engineering

Wang,

He,

Chen

et al. 2024

Green Chem.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tailoring the electronic structure of the NaTi₂(PO₄)₃ anode for high-performing sodium-ion batteries via defect engineering

Wang,

He,

Chen

et al. 2024

Green Chem.

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An Ionic Sieve‐Integrated Conductive Interfacial Design to Simultaneously Regulate the Zn²⁺ Flux and Interfacial Resistance for Advancing Zinc‐Ion Batteries

Wang,

Wu,

Xie

et al. 2024

Adv Funct Materials

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Zinc‐ion batteries possess operation safety, high energy density, production flexibility and affordability, making them attractive for scalable energy storage. While Zn anodes face significant challenges from rampant dendrite growth and electrolyte‐related side‐reactions in a complex interfacial microenvironment. The growing interfacial resistance further degrades the battery performance. An integrated anode interfacial design is reported to regulate simultaneously the Zn2+ flux and interfacial resistance through in situ confinement growth of Zn2+ sieve, that is, 2D CuBDC metal–organic framework in mesoporous carbonaceous host. CuBDC with sub‐nanometer channels is selected for efficient dehydration and directional Zn2+ flux transport, and lowering the nucleation barrier by zincophilic Cu(II) and N sites. Conductive meso‐carbon reduces the interfacial resistance and blocks the interfacial side‐reactions. Resultantly, the modified Zn anodes demonstrate improved cycling stability with lower voltage polarization, supported by operando optical microscopy and ex situ analysis. This work provides a feasible strategy improving aqueous Zn anodes and new interfacial insights on designing advancing zinc batteries.

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Tailoring Intrinsic Oxygen Vacancies in P3‐Type Na_0.66Mn_0.66Mg_0.33O_1.93 to Enhance Oxygen Redox Activity

Wang,

Zhang,

Zeng

et al. 2024

ChemSusChem

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Integrating oxygen redox reactions with transition metal redox reactions offers a promising strategy to double or triple the energy density for large‐capacity battery cathodes. In this study, we have introduced intrinsic oxygen vacancies (VO) into a P3 layered cathode to modulate the electronic structure of O atoms and enhance oxygen redox activity. Rietveld‐refined X‐ray diffraction (XRD), X‐ray absorption spectroscopy (XAS), and X‐ray photoelectron spectroscopy confirm the successful creation of VO in Na0.66Mn0.66Mg0.33O1.93 (OV‐NMM). Density functional theory (DFT) calculations reveal that VO in OV‐NMM positively enhances the antibonding interaction between Mn and O, directing excess electrons from O holes toward adjacent Mn t2g and O 2p orbitals. This modification significantly improves the reversibility and accelerates Na+ transport kinetics for O2−/O− redox reactions. Ex situ synthon‐based XRD demonstrates that VO effectively eliminates the O3 phase, reduces Mg2+ migration, and suppresses irreversible structural changes. XAS of Mn K‐edge and O K‐edge further illustrate the advantageous role of oxygen vacancies in facilitating oxygen redox reactions. These findings highlight the potential of defect engineering, particularly VO, to boost anionic redox activity for high‐capacity energy storage applications.

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Three-in-one oxygen-deficient titanium dioxide in a pomegranate-inspired design for improved lithium storage

Cited by 10 publications

References 61 publications

Tailoring the electronic structure of the NaTi₂(PO₄)₃ anode for high-performing sodium-ion batteries via defect engineering

Tailoring the electronic structure of the NaTi₂(PO₄)₃ anode for high-performing sodium-ion batteries via defect engineering

An Ionic Sieve‐Integrated Conductive Interfacial Design to Simultaneously Regulate the Zn²⁺ Flux and Interfacial Resistance for Advancing Zinc‐Ion Batteries

Tailoring Intrinsic Oxygen Vacancies in P3‐Type Na_0.66Mn_0.66Mg_0.33O_1.93 to Enhance Oxygen Redox Activity

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Three-in-one oxygen-deficient titanium dioxide in a pomegranate-inspired design for improved lithium storage

Cited by 10 publications

References 61 publications

Tailoring the electronic structure of the NaTi2(PO4)3 anode for high-performing sodium-ion batteries via defect engineering

Tailoring the electronic structure of the NaTi2(PO4)3 anode for high-performing sodium-ion batteries via defect engineering

An Ionic Sieve‐Integrated Conductive Interfacial Design to Simultaneously Regulate the Zn2+ Flux and Interfacial Resistance for Advancing Zinc‐Ion Batteries

Tailoring Intrinsic Oxygen Vacancies in P3‐Type Na0.66Mn0.66Mg0.33O1.93 to Enhance Oxygen Redox Activity

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Tailoring the electronic structure of the NaTi₂(PO₄)₃ anode for high-performing sodium-ion batteries via defect engineering

Tailoring the electronic structure of the NaTi₂(PO₄)₃ anode for high-performing sodium-ion batteries via defect engineering

An Ionic Sieve‐Integrated Conductive Interfacial Design to Simultaneously Regulate the Zn²⁺ Flux and Interfacial Resistance for Advancing Zinc‐Ion Batteries

Tailoring Intrinsic Oxygen Vacancies in P3‐Type Na_0.66Mn_0.66Mg_0.33O_1.93 to Enhance Oxygen Redox Activity