Pseudocapacitance enhanced by N-defects in Na3MnTi(PO4)3/N-doped carbon composite for symmetric full sodium-ion batteries

Li, Haifeng; Zhang, W.; Han, Zheng; Sun, Kai; Gao, Chunhui; Cheng, Ke; Liu, Z.; Chen, Q.; Zhang, J.; Lai, Yanqing; Zhang, Zhian; Sun, Hong

doi:10.1016/j.mtener.2021.100754

Cited by 30 publications

(31 citation statements)

References 45 publications

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“…Various forms of carbon materials are added to the battery materials to mitigate the problems of poor capacity, poor electronic conductivity, and slow ion diffusion. The carbon added can be graphene, CNTs, and amorphous carbon 94 . Various carbon coatings are primarily employed as surface coating techniques 90 .…”

Section: Symmetric Electrode Materials In Sodium‐ion Batteriesmentioning

confidence: 99%

“…A disadvantage with the Ti based symmetric cell is Ti 4+ /Ti 3+ based layered anode material has the drawback of low initial columbic efficiency which is harmful for a symmetric cell 99 . The low capacity obtained, and poor rate performance are the drawbacks associated with Na 3 MnTi(PO 4 ) 3 94 . Inspired from the materials with Mn and Ti couples and to avoid the drawbacks associated with Na 3 MnTi(PO 4 ) 3 , Li et al 94 developed an N doped carbon matrix embedded material.…”

Section: Symmetric Electrode Materials In Sodium‐ion Batteriesmentioning

confidence: 99%

“…The carbon added can be graphene, CNTs, and amorphous carbon. 94 Various carbon coatings are primarily employed as surface coating techniques. 90 Using carbon in different matrices of 0D, 1D, and 2D was carried out by Li et al 10 ; where acetylene carbon (AC) was used as the 0D material, carbon nanotubes (CNT) were used as the 1D material, and graphite nanosheets were used as the 2D material.…”

Section: Nvp With Different Forms Of Carbonmentioning

confidence: 99%

“…99 The low capacity obtained, and poor rate performance are the drawbacks associated with Na 3 MnTi(PO 4 ) 3 . 94 Inspired from the materials with Mn and Ti couples and to avoid the drawbacks associated with Na 3 MnTi(PO 4 ) 3 , Li et al 94 developed an N doped carbon matrix embedded material. The N doped carbon matrix embedded Na 3 MnTi(PO 4 ) 3 provides for N defects in the structure which have greater adsorption energy for Na + and N-vacancy defects resulting from N doping provides for easy diffusion of Na + .…”

Section: Nvp With Ti Mn and Comentioning

confidence: 99%

“…The N doped carbon matrix embedded Na 3 MnTi(PO 4 ) 3 provides for N defects in the structure which have greater adsorption energy for Na + and N-vacancy defects resulting from N doping provides for easy diffusion of Na + . The improved kinetics of the reaction and the pseudo capacitance effect induced resulted in the development of the material Na 3 MnTi(PO 4 ) 3 /C-N. 94 The material provides for an enhanced discharge capacity in symmetric cell with a value of 91.8 mAh g À1 at 1C, with a columbic efficiency of 85.2%, and has a capacity retention of 70.8% after 400 cycles. The material also benefits from a composite structure, lower particle size, large number of reactive sites which leads to the improvement in electrochemical performance.…”

Section: Nvp With Ti Mn and Comentioning

confidence: 99%

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Utilization of symmetric electrode materials in energy storage application: A review

Moossa

Abraham

Kahraman

et al. 2022

Intl J of Energy Research

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The development of efficient energy storage systems is an important field of research in the modern era where fossil fuels are headed toward depletion. The invention of batteries is regarded as one of the most significant advancements in the field of energy storage. From its inception, a lot of research has been done and is still being carried out to develop novel and advanced materials that provide improved performance in terms of capacity, stability, and cost. In this context, symmetric or bipolar electrodes, which utilize the same material for the anode and the cathode, emerge as a suitable solution for battery technology. In this work, different types of symmetric electrode materials for batteries are subjected to review. The various structures, methods of synthesis, and characteristics are analyzed and presented. The Na 3 V 2 (PO 4 ) 3 (NVP) is the most widely analyzed symmetric material among all the symmetric materials. The Na-based systems are widely studied in symmetric configurations for their resource availability and price economics advantages. Aqueous and solid-state symmetric batteries are the emerging systems in symmetric batteries. This review will provide insights to battery researchers involved in bipolar material design and shed light on new emerging energy storage techniques.

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Section: Symmetric Electrode Materials In Sodium‐ion Batteriesmentioning

confidence: 99%

Section: Symmetric Electrode Materials In Sodium‐ion Batteriesmentioning

confidence: 99%

Section: Nvp With Different Forms Of Carbonmentioning

confidence: 99%

Section: Nvp With Ti Mn and Comentioning

confidence: 99%

Section: Nvp With Ti Mn and Comentioning

confidence: 99%

See 3 more Smart Citations

Utilization of symmetric electrode materials in energy storage application: A review

Moossa

Abraham

Kahraman

et al. 2022

Intl J of Energy Research

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Sodium Ion Storage in Na₄MnV(PO₄)₃@C Free‐Standing Electrode

Zhu

Cai

et al. 2022

Adv Funct Materials

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To enhance the energy density of batteries and explore intrinsic charge storage mechanism of the active materials, it is important to reduce or eliminate the use of non-active materials in electrodes, such as binder and conductive additives. Herein, free-standing Na 4 MnV(PO 4 ) 3 @C (F-NMVP@C) fiber membrane is fabricated and directly used as a sodiumion battery (SIB) cathode. In situ X-ray diffraction reveals that the V 3+ /V 4+ redox reaction occurs through a solid-solution reaction while a two-phase Mn 2+ /Mn 3+ redox reaction is identified, and both are highly reversible. Meanwhile, ex situ electrochemical impedance spectroscopy reveals that both the ion diffusion coefficient and charge transfer resistance of F-NMVP@C change reversibly during the Na + intercalation/de-intercalation. Battery full cells are assembled based on the free-standing F-NMVP@C cathodes and F-Sb@C anodes, which manifests a high energy density (293 Wh kg −1 ) and good cyclability (87.5% after 100 cycles at 1 C). The high-performance free-standing cathodes and anodes shed light on the development of flexible SIBs.

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Mn‐Rich Phosphate Cathode for Sodium‐Ion Batteries: Anion‐Regulated Solid Solution Behavior and Long‐Term Cycle Life

Yin

Liu

et al. 2023

Adv Funct Materials

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As a sodium superionic conductor, Mn‐rich phosphate of Na3.4Mn1.2Ti0.8(PO4)3 is considered as one of the promising cathodes for sodium‐ion batteries owing to its good thermodynamic stability and high working voltage. However, Na3.4Mn1.2Ti0.8(PO4)3 is faced with low electronic conductivity, poor cycling stability and complex phase transition caused by multi‐electron transfers, which limits its practical application. Herein, an anion‐regulated strategy is proposed to optimize the Mn‐rich Na3.4Mn1.2Ti0.8(PO4)3 phosphate cathode. After introducing F anions into the lattice, the rate performance is improved from 60.5 to 72.8 mAh g−1 at 20 C. Ascribed to unique structure design, the reaction kinetics of Na3.4Mn1.2Ti0.8(PO4)3 are significantly improved, as demonstrated by cyclic voltammetry at varied scan rates and galvanostatic intermittent titration technique. The generated M‐F bond inhibits Jahn–Teller effect with an improved cycle stability (85.8 mAh g−1 after 1000 cycles at 5 C with 94.3% capacity retention). Interestingly, reaction mechanism of Na3.4Mn1.2Ti0.8(PO4)3 with the complex two‐phase and solid solution reactions changes to the whole solid solution reaction after fluorine substitution, and leads to a smaller volume change of 5.41% during reaction processes, which is verified by in situ X‐ray diffraction. This anion regulation strategy provides a new method for designing the high‐performance phosphate cathode materials of sodium‐ion batteries.

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Pseudocapacitance enhanced by N-defects in Na3MnTi(PO4)3/N-doped carbon composite for symmetric full sodium-ion batteries

Cited by 30 publications

References 45 publications

Utilization of symmetric electrode materials in energy storage application: A review

Utilization of symmetric electrode materials in energy storage application: A review

Sodium Ion Storage in Na₄MnV(PO₄)₃@C Free‐Standing Electrode

Mn‐Rich Phosphate Cathode for Sodium‐Ion Batteries: Anion‐Regulated Solid Solution Behavior and Long‐Term Cycle Life

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Pseudocapacitance enhanced by N-defects in Na3MnTi(PO4)3/N-doped carbon composite for symmetric full sodium-ion batteries

Cited by 30 publications

References 45 publications

Utilization of symmetric electrode materials in energy storage application: A review

Utilization of symmetric electrode materials in energy storage application: A review

Sodium Ion Storage in Na4MnV(PO4)3@C Free‐Standing Electrode

Mn‐Rich Phosphate Cathode for Sodium‐Ion Batteries: Anion‐Regulated Solid Solution Behavior and Long‐Term Cycle Life

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Sodium Ion Storage in Na₄MnV(PO₄)₃@C Free‐Standing Electrode