Galactomannan binding agents for silicon anodes in Li-ion batteries

Dufficy, Martin K.; Khan, Saad A.; Fedkiw, Peter S.

doi:10.1039/c5ta03126e

Cited by 46 publications

(44 citation statements)

References 35 publications

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“…These may interact with sites forming on the surface of the SiO 2 particles when dispersed in water. The active bonding, which mechanism (see below) was demostrated with FT-IR studies [17], probably starts during the slurry-mixing step but takes place mostly during the drying step (needed to remove all residual water [24]) as it is thermally activated.

R — OH + Si — OH \overset{Δ t}{\to} R — O ― Si + H_{2} O

…”

Section: Resultsmentioning

confidence: 99%

“…Guar gums have been proved viable for electrochemical energy storage applications, such as binders for lithium titanium oxide (Li 4 Ti 5 O 12 or LTO) [16] and silicon [17,18,19] anodes in lithium-ion batteries and gel polymer electrolytes in super capacitors [20]. The advantages of using HPG compared with native guar gum are the enhanced water solubility and thermal stability [21].…”

Section: Introductionmentioning

confidence: 99%

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High Temperature Stable Separator for Lithium Batteries Based on SiO2 and Hydroxypropyl Guar Gum

et al. 2015

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A novel membrane based on silicon dioxide (SiO2) and hydroxypropyl guar gum (HPG) as binder is presented and tested as a separator for lithium-ion batteries. The separator is made with renewable and low cost materials and an environmentally friendly manufacturing processing using only water as solvent. The separator offers superior wettability and high electrolyte uptake due to the optimized porosity and the good affinity of SiO2 and guar gum microstructure towards organic liquid electrolytes. Additionally, the separator shows high thermal stability and no dimensional-shrinkage at high temperatures due to the use of the ceramic filler and the thermally stable natural polymer. The electrochemical tests show the good electrochemical stability of the separator in a wide range of potential, as well as its outstanding cycle performance.

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R — OH + Si — OH \overset{Δ t}{\to} R — O ― Si + H_{2} O

…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Temperature Stable Separator for Lithium Batteries Based on SiO2 and Hydroxypropyl Guar Gum

et al. 2015

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“…Some biopolymers [84][85][86][87] were used for Si-based electrodes in LIBs and showed extraordinary properties for their efficient polymer structures. Some biopolymers [84][85][86][87] were used for Si-based electrodes in LIBs and showed extraordinary properties for their efficient polymer structures.…”

Section: Self-healing-type Bindermentioning

confidence: 99%

“…Another vital direction of studies is biopolymers because there are many functional groups, such as −OH, −COOH and −NH 2 , in molecule chains. Some biopolymers [84][85][86][87] were used for Si-based electrodes in LIBs and showed extraordinary properties for their efficient polymer structures. Alginate (Alg) binder was crosslinked by catechol 88 or Ca 2+89,90 exhibiting excellent mechanical strength and strong interaction with Si-based particles showing a long-term cycle life (Figure 5a,b).…”

Section: Self-healing-type Bindermentioning

confidence: 99%

The progress of novel binder as a non-ignorable part to improve the performance of Si-based anodes for Li-ion batteries

Huang

Ren²,

Liu

et al. 2017

Int J Energy Res

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Summary In this review, we highlight recent achievements of polymer binders used for Si‐based anodes in Li‐ion batteries. We classify the polymer binders, depending on their polymer structures and the function on performances of Si‐based anodes, into 3 types: cellulose‐type, conductive‐type and self‐healing‐type binders. The relationship between polymer structures and enhanced electrochemical performances of Si‐based anodes is discussed in details. We investigate how the binders make an extraordinary improvement on the specific capacity, cycling stability and rate performances of Si‐based anodes. The reasons of the noticeable effect on Si‐based anodes especially the controlling of swelling during cycling are also researched. In a word, the main aim of this review is to analyze recent research achievements and propose perspectives of polymer binders used for Si‐based anodes in promising Li‐ion batteries.

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“…1) [32,33] making it an attractive system for exploring as a binder for LIBs as indicated in the present study. In recent publication, gaur gum and its derivative has been reported as a suitable binder for silicon nanoparticles which shows excellent electrochemical performance [34,35]. In the present study, contrary with the published reports, Si/C composite consisting of more ubiquitous micron-sized Si dispersed on graphite matrix obtained by cost effective high energy ball milling has been used as a Li-ion active material to study the cyclability of the composite electrode (Si + binder + CC) based on PGG binder and Si/C active materials.…”

Section: Introductionmentioning

confidence: 99%

Guar gum: Structural and electrochemical characterization of natural polymer based binder for silicon–carbon composite rechargeable Li-ion battery anodes

Kuruba

Datta

Damodaran

et al. 2015

Journal of Power Sources

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Long term cyclability of a composite Li-ion anode electrode comprised of 82 wt.% Si/C lithium ion active material along with 8 wt.% polymeric binder and 10 wt.% Super P conductive carbon black has been studied utilizing polymeric binders exhibiting different elastic/tensile moduli and tensile yield strengths. Accordingly electrochemically active Si/C composite synthesized by high energy mechanical milling (HEMM), exhibiting reversible specific capacities of ~780mAh/g and ~600mAh/g at charge/discharge rates of ~50mA/g and ~200mA/g, respectively were selected as the Li-ion active anode. Polyvinylidene fluoride (PVDF) and purified guar gum (PGG) with reported elastic modulus ~1000MPa and ~3200MPa, respectively were selected as the binders.Results show that the composite electrode (Si/C + binder + conducting carbon) comprising the higher elastic modulus binder (PGG) exhibits better long term cyclability contrasted with PVDF. 1 H NMR analysis of the polymer before and after cycling shows structural degradation/deformation of the low elastic modulus PVDF, whereas the high elastic modulus PGG binder shows no permanent structural deformation or damage. The results presented thus suggest that PGG based polymers exhibiting high elastic modulus are a promising class of binders with the desired mechanical integrity needed for enduring the colossal volume expansion stresses of Si/C based composite anodes.

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Galactomannan binding agents for silicon anodes in Li-ion batteries

Abstract: The high Li-extraction capacity can be owed to the favorable interactions between silicon nanoparticles and the galactomannan binders.

Cited by 46 publications

References 35 publications

High Temperature Stable Separator for Lithium Batteries Based on SiO2 and Hydroxypropyl Guar Gum

High Temperature Stable Separator for Lithium Batteries Based on SiO2 and Hydroxypropyl Guar Gum

The progress of novel binder as a non-ignorable part to improve the performance of Si-based anodes for Li-ion batteries

Guar gum: Structural and electrochemical characterization of natural polymer based binder for silicon–carbon composite rechargeable Li-ion battery anodes

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