Determination of the chemical diffusion coefficient of Li+ in intercalation-type Li3V2(PO4)3 anode material

Rui, Xianhong; Yesibolati, Murat Nulati; Li, S.R.; Chen, Yuan; Chen, C.H.

doi:10.1016/j.ssi.2011.02.013

Cited by 169 publications

(74 citation statements)

References 32 publications

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“…The cell voltage was discharge/charge at C/10 rate for an interval of 30 min followed by open circuit voltage for 5 h. The D Liþ of Li ion in SA-MGH microsphere and bare MoO 2 nanoparticle are calculated from GITT discharge curve as a function of cell voltage. The value of chemical diffusion coefficient (D Liþ ) in the electrodes can be determined by using Fick's second law of diffusion, potential range, and DE is the total change of the cell voltage during the current pulse for the time t [48,49]. The SA-MGH microsphere and bare MoO 2 nanoparticle possess similar minimas, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Self-assembled porous MoO2/graphene microspheres towards high performance anodes for lithium ion batteries

Palanisamy

Kim

et al. 2015

Journal of Power Sources

137

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Section: Resultsmentioning

confidence: 99%

Self-assembled porous MoO2/graphene microspheres towards high performance anodes for lithium ion batteries

Palanisamy

Kim

et al. 2015

Journal of Power Sources

137

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“…The apparent diffusion coefficient during charge can also be calculated by Equation (12), where ∆E S and ∆E τ are identified as shown in Figure 4d. Caution should be exercised when identifying V m and A in Equation (12). V m is referred to the molar volume of intermediate products (M x A), and it varies much on mobile ion concentrations (x in M x A) for anode materials with notable volume change during the uptake of mobile ions like Li + or Na + .…”

Section: Galvanic Techniquesmentioning

confidence: 99%

Electrochemical Techniques in Battery Research: A Tutorial for Nonelectrochemists

Yang

Rogach

2019

Advanced Energy Materials

266

155

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Many researchers who are now active in the flourishing field of battery research are coming from backgrounds other than electrochemistry, and might not be in possession of a systematic electrochemical training before they start the journey of “building better batteries.” With this specific audience in mind, the authors review electrochemical techniques commonly used in battery research. Starting from an introduction of the basic electrochemistry concepts, the authors offer a detailed discussion of potential, galvanic, and impedance measurement techniques, providing practical details and useful comments on performing both the data acquisition and analysis. One aim of this essay is to emphasize the importance of standard evaluation of the battery performance.

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“…Li cathode active material for LIB applications for the extraction of two mole of Li by utilizing V 3+/4+ redox couple with theoretical capacity ≈132 mAh g −1 . [ 311 ] Li 3 V 2 (PO 4 ) 3 consists of a 3D framework of metal octahedra (VO 6 ) and phosphate tetrahedra (PO 4 ) sharing oxygen vertices. This certainly results in structural destruction and eventually leads to capacity fade upon cycling.…”

Section: V 2 (Po 4 )mentioning

confidence: 99%

Research Progress on Negative Electrodes for Practical Li‐Ion Batteries: Beyond Carbonaceous Anodes

Aravindan

Lee

Srinivasan

2015

Advanced Energy Materials

442

319

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3 of 43) 1402225 wileyonlinelibrary.comhost matrix is observed and this process is called "topotactic reaction", which is either chemically or thermally reversible; a perfect example is Li-intercalation into a graphite matrix. Such intercalation chemistry has been successfully used in Li-ion batteries for both anode and cathode materials and has also been commercialized (i.e., LiCoO 2 /Li x C 6 and LiFePO 4 /Li x C 6 ). [ 4,5 ] The insertion type materials, i.e., metal oxides have several advantages over graphitic anodes when used in practical cells; these include a negligible amount of ICL, no Li-platting issues, no solvent co-intercalation, no electrolyte decomposition, no SEI required for the safe operation of the cell, it is capable of delivering high power density, and has an easy synthesis protocol. On the other hand, less reversible capacity and higher intercalation potential are the notable setbacks compared to graphite. Although numerous Li-intercalating materials are proposed as possible anodes for LIB applications, few of them have only been tested or commercialized in the "rocking-chair" confi guration, for instance Li 4 Ti 5 O 5 anode. Apart from the mentioned anode, few other insertion type materials have been also evaluated in the rocking-chair confi guration for LIBs. Accordingly, the next section describes the structural and electrochemical performance of various intercalation anodes evaluated in the rocking-chair confi guration. TiO 2The existence of several polymorphs is reported for the case of TiO 2 , but anatase, rutile, brookite, and bronze phases have only been reported for Li-storage. [ 26 ] Reversible insertion of one mole of Li is theoretically possible, independent of the polymorph, with a capacity of ≈335 mAh g −1 . However, variation in the Liinsertion potential and reaction mechanism has been observed for such polymorphs. Easy synthesis protocols, scalability, inexpensiveness, ease of tailoring the desired morphology, and eco-friendliness are other key features for utilizing TiO 2 polymorphs for the construction of Li-ion power packs. [27][28][29] AnataseThe anatase phase is one of the widely investigated polymorphs of TiO 2 for Li-storage. [ 27 ] Theoretically, one mole of Li is possible, but practically only ≈0.5 mole Li is reversible upon cycling. Several research attempts have been carried out to improve the reversible capacity, including utilizing high energy (0 0 1) facets because of their dominant higher surface energy (0.90 J m −2 ) compared to (1 0 0) facets (0.44 J m −2 ) and using thermodynamically more stable (1 0 1) facets (0.53 J m −2 ). [ 30,31 ] Although high Li-reversibility could be achieved for such (0 0 1) facets, capacity fading remains an issue upon cycling. [ 32 ] Li-diffusion co-effi cient ( D Li ) values for anatase phase are in the range of 1 × 10 −17 to 4 × 10 −17 cm 2 s −1 for Li-insertion and extraction processes, respectively. [ 27 ] In the crystal chemistry of the anatase phase, TiO 6 octahedra sharetwo adjacent edges with two other octahedral so that...

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Determination of the chemical diffusion coefficient of Li+ in intercalation-type Li3V2(PO4)3 anode material

Cited by 169 publications

References 32 publications

Self-assembled porous MoO2/graphene microspheres towards high performance anodes for lithium ion batteries

Self-assembled porous MoO2/graphene microspheres towards high performance anodes for lithium ion batteries

Electrochemical Techniques in Battery Research: A Tutorial for Nonelectrochemists

Research Progress on Negative Electrodes for Practical Li‐Ion Batteries: Beyond Carbonaceous Anodes

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