Analysis of the chemical diffusion coefficient of lithium ions in Li3V2(PO4)3 cathode material

Rui, Xianhong; Ding, Ning; Liu, Jue; Li, Cheng; Chen, C.H.

doi:10.1016/j.electacta.2009.11.096

Cited by 592 publications

(346 citation statements)

References 38 publications

Supporting

Mentioning

314

Contrasting

Unclassified

Order By: Relevance

“…Sun et al [34] reported that the reversible specific capacity of The cyclic voltammetry (CV) technique is widely employed to estimate the Li + diffusion coefficient [19,32,33]. …”

Section: Resultsmentioning

confidence: 99%

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Chou

Zhou

et al. 2014

Journal of Power Sources

View full text Add to dashboard Cite

“…Sun et al [34] reported that the reversible specific capacity of The cyclic voltammetry (CV) technique is widely employed to estimate the Li + diffusion coefficient [19,32,33]. …”

Section: Resultsmentioning

confidence: 99%

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Chou

Zhou

et al. 2014

Journal of Power Sources

View full text Add to dashboard Cite

“…A systematic study by Rui and co-workers 95 found that the correlation between the voltage state of the charge/discharge and the chemical diffusion coefficient of lithium ions in LVP in the potential range of 3.0-4.8 V did not change significantly in spite of using different techniques (CV, GITT, and EIS). As illustrated in Fig.…”

Section: Vo 2 (B) Nanostructures For Libsmentioning

confidence: 99%

Vanadium-based nanostructure materials for secondary lithium battery applications

et al. 2015

View full text Add to dashboard Cite

Vanadium-based materials, such as V2O5, LiV3O8, VO2(B) and Li3V2(PO4)3 are compounds that share the characteristic of intercalation chemistry. Their layered or open frameworks allow facile ion movement through the interspaces, making them promising cathodes for LIB applications. To bypass bottlenecks occurring in the electrochemical performances of vanadium-based cathodes that derive from their intrinsic low electrical conductivity and ion diffusion coefficients, nano-engineering strategies have been implemented to "create" newly emerging properties that are unattainable at the bulk solid level. Integrating this concept into vanadiumbased cathodes represents a promising way to circumvent the aforementioned problems as nanostructuring offers potential improvements in electrochemical performances by providing shorter mass transport distances, higher electrode/electrolyte contact interfaces, and better accommodation of strain upon lithium uptake/ release. The significance of nanoscopic architectures has been exemplified in the literature, showing that the idea of developing vanadium-based nanostructures is an exciting prospect to be explored. In this review, we will be casting light on the recent advances in the synthesis of nanostructured vanadium-based cathodes. Furthermore, efficient strategies such as hybridization with foreign matrices and elemental doping are introduced as a possible way to boost their electrochemical performances (e.g., rate capability, cycling stability) to a higher level. Finally, some suggestions relating to the perspectives for the future developments of vanadium-based cathodes are made to provide insight into their commercialization. through the interspaces, making them promising cathodes for LIB applications. To bypass bottlenecks occurring in the electrochemical performances of vanadium-based cathodes that derive from their intrinsic low electrical conductivity and ion diffusion coefficients, nano-engineering strategies have been implemented to "create" newly emerging properties that are unattainable at the bulk solid level. Integrating this concept into vanadium-based cathodes represents a promising way to circumvent the aforementioned problems as nanostructuring offers potential improvements in electrochemical performances by providing shorter mass transport distances, higher electrode/electrolyte contact interfaces, and better accommodation of strain upon lithium uptake/release. The significance of nanoscopic architectures has been exemplified in the literature, showing that the idea of developing vanadium-based nanostructures is an exciting prospect to be explored. In this review, we will be casting light on the recent advances in the synthesis of nanostructured vanadium-based cathodes. Furthermore, efficient strategies such as hybridization with foreign matrices and elemental doping are introduced as a possible way to boost their electrochemical performances (e.g., rate capability, cycling stability) to a higher level. Finally, some suggestions relating to the perspective...

show abstract

“…There are also studies showing substantial increases in charge transfer resistance of Li 3 V 2 (PO 4 ) 3 , [36][37][38][39] Li 9 V 3 (P 2 O 7 ) 3 (PO 4 ) 2 , 40 and V 2 O 5 41-43 cathode materials during lithiation. Thus, the SVOP cathode material reported here is unique because the initial preference of Ag + or V 5+ reduction can be controlled by discharge rate.…”

Section: Discussionmentioning

confidence: 99%

Rate Dependent Multi-Mechanism Discharge of Ag_0.50VOPO₄·1.8H₂O: Insights from In Situ Energy Dispersive X-ray Diffraction

Huie

Bock

Zhong

et al. 2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

Ag 0.50 VOPO 4 · 1.8H 2 O (silver vanadium phosphate, SVOP) demonstrates a counterintuitive higher initial loaded voltage under higher discharge current. Energy dispersive X-ray diffraction (EDXRD) from synchrotron radiation was used to create tomographic profiles of cathodes at various depths of discharge for two discharge rates. SVOP displays two reduction mechanisms, reduction of a vanadium center accompanied by lithiation of the structure, or reduction-displacement of a silver cation to form silver metal. In-situ EDXRD provides the opportunity to observe spatially resolved changes to the parent SVOP crystal and formation of Ag 0 during reduction. At a C/170 discharge rate V 5+ reduction is the preferred initial reaction resulting in higher initial loaded voltage. At a discharge rate of C/400 reduction of Ag + with formation of conductive Ag 0 occurs earlier during discharge. Discharge rate also affects the spatial location of reduction products. The faster discharge rate initiates reduction close to the current collector with non-uniform distribution of silver metal resulting in isolated cathode areas. The slower rate develops a more homogenous distribution of reduced SVOP and silver metal. This study illuminates the roles of electronic and ionic conductivity limitations within a cathode at the mesoscale and how they impact the course of reduction processes and loaded voltage. Polyanion-type materials such as LiFePO 4 have been heavily researched as battery cathodes because of their impressive stability and high operating voltage relative to oxide based materials.1-3 The thermal stability of the polyanion framework improves battery safety especially under demanding conditions. Furthermore, chemical stability of the polyanion can reduce cathode dissolution relative to oxides, extending the battery's lifetime. Specifically, for battery systems used to power implantable cardioverter defibrillators (ICD), silver vanadium phosphate (Ag w V x P y O z , SVOP) materials have been shown to minimize cathode dissolution compared to the commercially utilized silver vanadium oxide cathode, 4-6 creating the potential for improved ICD batteries with extended longevity.7-15 However, a significant limitation of phosphate-based cathodes is their inherently poor electrical conductivity. Silver vanadium phosphates are able to overcome this issue due to the incorporation of silver. As SVOP compounds are reduced, silver is reduced in-situ, forming a conductive network of silver nanoparticles that can improve electrical conductivity by ∼15,000 fold.14 In-situ energy dispersive X-ray diffraction (EDXRD) is a powerful technique that can be used to better understand the mechanisms of electrochemical discharge in SVOP materials. EDXRD utilizes white, collimated X-rays as the incident beam, which is scattered by the sample. 16 The resulting diffraction patterns are distributed in the selected energy range and captured by a detector held at a fixed angle. The light source is synchrotron based in order to emit the high-energy radiation n...

show abstract

Analysis of the chemical diffusion coefficient of lithium ions in Li3V2(PO4)3 cathode material

Cited by 592 publications

References 38 publications

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Vanadium-based nanostructure materials for secondary lithium battery applications

Rate Dependent Multi-Mechanism Discharge of Ag_0.50VOPO₄·1.8H₂O: Insights from In Situ Energy Dispersive X-ray Diffraction

Contact Info

Product

Resources

About

Analysis of the chemical diffusion coefficient of lithium ions in Li3V2(PO4)3 cathode material

Cited by 592 publications

References 38 publications

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Vanadium-based nanostructure materials for secondary lithium battery applications

Rate Dependent Multi-Mechanism Discharge of Ag0.50VOPO4·1.8H2O: Insights from In Situ Energy Dispersive X-ray Diffraction

Contact Info

Product

Resources

About

Rate Dependent Multi-Mechanism Discharge of Ag_0.50VOPO₄·1.8H₂O: Insights from In Situ Energy Dispersive X-ray Diffraction