Abstract
The role of the physicochemical properties of the water-soluble polyacrylic acid (PAA) binder in the electrochemical performance of highly loaded silicon/graphite 50/50 wt % negative electrodes has been examined as a function of the neutralization degree x in PAAH1-xLix at the initial cycle in an electrolyte not containing ethylene carbonate. Electrode processing in the acidic PAAH binder at pH 2.5 leads to a deep copper corrosion, resulting in a significant electrode cohesion and adhesion to the current collector surface, but the strong binder rigidity may explain the big cracks occurring on the electrode surface at the first cycle. The nonuniform binder coating on the material surface leads to an important degradation of the electrolyte, explaining the lowest initial Coulombic efficiency and the lowest reversible capacity among the studied electrodes. When processed in neutral pH, the PAAH0.22Li0.78 binder forms a conformal artificial solid electrolyte interphase layer on the material surface, which minimizes the electrolyte reduction at the first cycle and then maximizes the initial Coulombic efficiency. However, the low mechanical resistance of the electrode and its strong cracking explain its low reversible capacity. Elect...Continue Reading
References
Mar 21, 2009·Journal of the American Chemical Society·Baris KeyClare P Grey
Nov 9, 2010·ACS Applied Materials & Interfaces·Alexandre MagasinskiGleb Yushin
Dec 22, 2010·Journal of the American Chemical Society·Baris KeyClare P Grey
Oct 8, 2011·Solid State Nuclear Magnetic Resonance·M CuisinierN Dupré
Jan 18, 2013·Nano Letters·Matthew T McDowellYi Cui
Jun 12, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Sanghyuk LimMasato Yamamura
Nov 18, 2014·Chemical Reviews·M N Obrovac, V L Chevrier
Jan 7, 2015·Physical Chemistry Chemical Physics : PCCP·Zhen-Ji HanShinichi Komaba
Mar 13, 2015·ACS Applied Materials & Interfaces·Julien SouriceCécile Reynaud
Dec 3, 2015·Angewandte Chemie·Lavinia M ScherfThomas F Fässler
Jan 30, 2016·Soft Matter·Thomas SwiftStephen Rimmer
May 3, 2016·ACS Applied Materials & Interfaces·Cao Cuong NguyenBrett L Lucht
May 24, 2016·Chemistry of Materials : a Publication of the American Chemical Society·N DupréD Guyomard
Jul 26, 2017·Scientific Reports·Gabriel M VeithJames F Browning
Feb 8, 2018·Chemical Society Reviews·Tae-Woo KwonAli Coskun
Aug 3, 2018·Scientific Reports·Brian H ShenWyatt E Tenhaeff
Aug 23, 2018·Chemical Reviews·Hao ChenShanqing Zhang
Feb 26, 2019·ACS Applied Materials & Interfaces·Qi LiYong Yang
Mar 8, 2019·ChemSusChem·Gebrekidan Gebresilassie Eshetu, Egbert Figgemeier
Aug 29, 2019·ACS Omega·Jinhong LeeHee-Tak Kim
Jan 28, 2020·ACS Applied Materials & Interfaces·Katie L BrowningGabriel M Veith
Aug 4, 2020·Advanced Materials·Yeonguk SonJaephil Cho
Dec 3, 2020·ACS Applied Materials & Interfaces·Mary K Burdette-TrofimovGabriel M Veith