Dimensionally stable Li-alloy electrodes for secondary batteries

Besenhard, Jürgen; Heß, Michael Reinhard; Komenda, Peter

doi:10.1016/0167-2738(90)90062-v

Cited by 121 publications

(54 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formation of a rough surface and the creation of voids within the electrode could be due to the lattice expansion that occurs during the lithiation of aluminum to form the LiAl alloy. Going from metallic aluminum to the LiAl alloy results in a 97% expansion in the lattice [42]. However, this is significantly less than the lattice expansion during the lithiation of Si to Li22Si5 and Sn to Li22Sn5 which are 323% and 300% [43] respectively.…”

Section: Resultsmentioning

confidence: 90%

Investigation of the Reversible Lithiation of an Oxide Free Aluminum Anode by a LiBH4 Solid State Electrolyte

et al. 2017

View full text Add to dashboard Cite

Abstract:In this study, we analyze and compare the physical and electrochemical properties of an all solid-state cell utilizing LiBH 4 as the electrolyte and aluminum as the active anode material. The system was characterized by galvanostatic lithiation/delithiation, cyclic voltammetry (CV), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), Raman spectroscopy, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). Constant current cycling demonstrated that the aluminum anode can be reversibly lithiated over multiple cycles utilizing a solid-state electrolyte. An initial capacity of 895 mAh/g was observed and is close to the theoretical capacity of aluminum. Cyclic voltammetry of the cell was consistent with the constant current cycling data and showed that the reversible lithiation/delithiation of aluminum occurs at 0.32 V and 0.38 V (vs. Li + /Li) respectively. XRD of the aluminum anode in the initial and lithiated state clearly showed the formation of a LiAl (1:1) alloy. SEM-EDS was utilized to examine the morphological changes that occur within the electrode during cycling. This work is the first example of reversible lithiation of aluminum in a solid-state cell and further emphasizes the robust nature of the LiBH 4 electrolyte. This demonstrates the possibility of utilizing other high capacity anode materials with a LiBH 4 based solid electrolyte in all-solid-state batteries.

show abstract

Section: Resultsmentioning

confidence: 90%

Investigation of the Reversible Lithiation of an Oxide Free Aluminum Anode by a LiBH4 Solid State Electrolyte

et al. 2017

View full text Add to dashboard Cite

show abstract

“…[268,337,338] A similar concept of supporting small particles of electroactive Li alloys with less active or non-active matrices was introduced in 1981. [333] The matrix material can be a conductive polymer, [348,349] a porous membrane, [350] an inert metal-like copper, [327] or another mixed conductor. [289,291,333,334] [351,352] or silver [353±356] show good cycling behavior.…”

Section: Lithium Alloys As Negative Insertion Electrode Materialsmentioning

confidence: 99%

Insertion Electrode Materials for Rechargeable Lithium Batteries

Winter¹,

et al. 1998

View full text Add to dashboard Cite

show abstract

“…Due to the significant changes in the volume of these materials associated with the lithiation and delithiation processes, much work is presently carried out to study how to circumvent this problem [3] using for instance, metal oxides [3][4][5][6][7][8][9][10] where the oxide serves as a buffering matrix during the lithiation process, or by utilising nanoparticles to minimize the effects of the volume changes [11][12][13]. Other approaches involve embedding the active electrode material in a composite matrix [14][15][16], the use of amorphous alloys [17][18][19], or intermetallic systems (A x B y ) which have a strong structural relationship to that of their lithiated products [20][21][22]. In these materials, both metals can either be active with respect to lithium (see e.g.…”

Section: Introductionmentioning

confidence: 99%