Recent Progress on Polymeric Binders for Silicon Anodes in Lithium-Ion Batteries

Abstract

Advanced polymeric binders with unique functions such as improvements in the electronic conduction network, mechanical adhesion, and mechanical durability during cycling have recently gained an increasing amount of attention as a promising means of creating high-performance silicon (Si) anodes in lithium-ion batteries with high energy density levels. In this review, we describe the key challenges of Si anodes, particularly highlighting the recent progress in the area of polymeric binders for Si anodes in cells.

Pitch-based carbon/nano-silicon composite, an efficient anode for Li-ion batteries

“…15 Unlike poly(vinylidene uoride) (PVDF), aqueous binders such as carboxymethyl cellulose (CMC) or poly(acrylic acid) (PAA) enhance the electrochemical performances of silicon electrodes. [16][17][18][19] In fact, a pH ¼ 3 buffer promotes the formation of covalent bonds by the esterication between the SiOH groups from silicon and the R-COOH groups from the CMC. The presence of these bonds increases the mechanical strength of the electrode, thus tolerating much better the volume modications and, consequently, improving the electrochemical performances.…”

“…The presence of these bonds increases the mechanical strength of the electrode, thus tolerating much better the volume modications and, consequently, improving the electrochemical performances. 9,[15][16][17]20,21 Recently, researches have trended towards the formulation of nanocomposites or hierarchical nanostructured materials in order to enhance the cycling performances of silicon-based anodes. 6 The use of carbonaceous coatings or carbonaceous matrix on Si-NPs opens different possibilities of improvement.…”

Ending the Chase for a Perfect Binder: Role of Surface Chemistry Variation and its Influence on Silicon Anodes

“…There have been numerous studies reporting or exploring the role of the binder . Most of these studies focus on the use of a single binder with a single silicon source that then are subjected to different drying schemes, voltage ranges, cycle number, processing conditions .…”

Potential Dependence of Electrochemical Etching Reaction of Si(111) Surface in a Fluoride Solution Studied by Electrochemical and Scanning Tunneling Microscopic Techniques

“…Silicon surface has attracted considerable attention because it shows unique physical properties when it is modified [1,2]. The modified silicon surface has been used as the functional surfaces for various applications such as photoelectrochemical hydrogen production [3,4], sensors [5,6], photoluminescence [7][8][9], electroluminescence [10], solar cell [11], and lithium ion battery [12,13]. These properties result from the nanostructure of the silicon surface [3].…”