LiODFB CAS 409071-16-5

Iden­ti­fi­ca­tion Prop­er­ties Safe­ty Data Spec­i­fi­ca­tions andamp ; Oth­er Information Links

Iden­ti­fi­ca­tion

Name

LiODFB

CAS Number

409071-16-5

Syn­onyms

LiD­FOB Lithi­um Oxa­lyld­iflu­o­ro Borate Borate(1-), [ethanedioato(2-)-κO1,κO2]difluoro-, lithi­um (1:1) [ACD/​Index Name] Lithi­um [ethanedioato(2-)-κ2O1,O2](difluoro)borate(1-) [ACD/IUPAC Name] 409071-16-5 [RN] Lithi­um difluoro(oxalato)borate LITHI­UM DIFLU­O­RO(OXALA­TO)BORATE(1-) MFCD21608640 MFCD27952543

Mol­e­c­u­lar Structure

SMILES

[Li+].[B-]1(OC(=O)C(=O)O1)(F)F

Std­InChI

InChI=1S/C2BF2O4.Li/c4-3(5)8-1(6)2(7)9-3;/q-1;+1

Std­InChIKey

MED­D­­CIKGDM­­DO­RY-UHF­F­­FAOYSA-N

Mol­e­c­u­lar Formula

C2BF2LiO4

Mol­e­c­u­lar Weight

143.768

MDL Number

MFCD21608640

Prop­er­ties

Appear­ance

White or light yel­low pow­der

Melt­ing Point

265-271 °C

Safe­ty Data

Sym­bol

GHS07

Sig­nal Word

Warn­ing

Haz­ard Statements

H315-H319-H335

Pre­cau­tion­ary Statements

P261-P305 + P351 + P338

RIDADR

NONH for all modes of trans­port

WGK Germany

3 

MSDS

MSDS of LiODFB CAS 409071-16-5

Spec­i­fi­ca­tions and Oth­er Infor­ma­tion of Our LiODFB CAS 409071-16-5

Stan­dard

Enter­prise stan­dard

Puri­ty

99.8%min

Water

200ppm max

Insol­ubles

0.2% max

Na+K

20ppm max

Ca

5ppm max

Fe

5ppm max

Cl

5ppm max

SO4

5ppm max

Pack­age

3kg/​bottle

Stor­age

At room tem­per­a­ture or low tem­per­a­ture, dry and ven­ti­lat­ed envi­ron­ment, sealed, away from heat

Fea­tures

• LiODFB has high­er ther­mal sta­bil­i­ty and much less free acid con­tent, and released CO2 pos­si­bly pro­vides good safe­ty of cells.
• The cells using LiODFB-based elec­trolyte have low­er capac­i­ty fade than the cells using LiPF6-based elec­trolyte after 100 cycles at 55 ℃, and high­er ini­tial capac­i­ty reten­tion at the ele­vat­ed temperature.
• At 0.5C and 1C dis­charge rates, the rate capa­bil­i­ty of the cells with the LiODFB-based elec­trolyte is almost the same as that of the cells with the LiPF6-based elec­trolyte after 20 cycles,and the gap between the two cells is tiny.
• Inter­face prop­er­ties of the cells show that LiODFB is reduced and forms a thick­en­ing and pro­tec­tive SEI film on the neg­a­tive elec­trode. Although this can increase the imped­ance of SEI film, the cells still can pro­vide a prefer­able rate per­for­mance. More work is need­ed to car­ry out in the lithi­um bat­tery of com­mer­cial­iza­tion in the future.

Appli­ca­tion

For a sec­ondary lithi­um ion bat­tery or super­ca­pac­i­tor as a con­duc­tive salt or addi­tives ; or for ion­ic liq­uids, phar­ma­ceu­ti­cals and oth­er organ­ic syn­the­sis Lithi­um oxa­lyld­iflu­o­rob­o­rate (LiODFB) is first report­ed as the salt for improved elec­trolyte of Li-ion bat­tery. This salt was found to have the com­bined advan­tages of lithi­um bis(oxalato)borate (LiBOB) and LiBF4 due to its chem­i­cal struc­ture com­pris­ing the half mol­e­c­u­lar moi­eties of LiBOB and LiBF4. Com­pared with LiBOB, the salt is more sol­u­ble in lin­ear car­bon­ates and the result­ing solu­tion is less vis­cous, which results in the bat­tery bet­ter low tem­per­a­ture and high rate per­for­mance. Unlike LiBF4, the salt is high­ly capa­ble of sta­bi­liz­ing sol­id elec­trolyte inter­face (SEI) on the sur­face of graphite anode, which enables Li-ion cell to be oper­at­ed sta­bly at high tem­per­a­ture. For exam­ple, a graphite/LiNi1−x− yMxNyO2 (M and N are met­al atoms) Li-ion cell suf­fered only about 10% capac­i­ty loss after 200 cycles at 60 °C. On the oth­er hand, graphite can be cycled reversibly with LiODFB even in a solu­tion con­tain­ing high con­cen­tra­tion (50 wt%) of propy­lene car­bon­ate (PC), which makes it pos­si­ble to for­mu­late the low freez­ing tem­per­a­ture elec­trolyte by using PC as the co-sol­vent. Oth­er mer­its of the LiODFB-based elec­trolytes include (1) the abil­i­ty to sup­port metal­lic lithi­um cycling reversibly on the sur­face of cop­per anode cur­rent col­lec­tor, (2) the abil­i­ty to pas­si­vate alu­minum cath­ode cur­rent col­lec­tor at high poten­tials, (3) the abil­i­ty to par­tic­i­pate in for­ma­tion of the SEI and sup­port Li-ion bat­tery oper­at­ing sta­bly at high tem­per­a­tures, and (4) the abil­i­ty to increase bat­tery safe­ty pro­tec­tion and over­charge tol­er­ance.

Links

This prod­uct is devel­oped by our RD com­pa­ny Warshel Chem­i­cal Ltd(http://​www​.warshel​.com/), and here is the cor­re­spond­ing linkhttp://​www​.warshel​.com/​L​i​O​D​F​B​-​c​a​s​-​4​0​9​0​7​1​-​1​6​-5/

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