Crosslinked polymers and related compositions, electrochemical cells, batteries, methods and systems
Crosslinked polymers and related compositions and related compositions, electrochemical cells, batteries, methods and systems are described. The crosslinked polymers have at least one redox active monomeric moiety having a redox potential of 0.5 V to 3.0 V with reference to Li/Li + electrode potential under standard conditions or −2.54 V to −0.04 V vs. SHE and has a carbocyclic structure and at least one carbonyl group or a carboxyl group on the carbocyclic structure. The crosslinked polymers also include at least one comonomeric moiety with at least one of the at least one redox active monomeric moiety and/or the at least one comonomeric moiety has a denticity of three to six corresponding to a three to six connected network polymer, and provide stable, high capacity organic electrode materials.
1 . A dendritic polymer represented by Formula (II)
[D-L ND -Y NL-1 NY-1 ] G Formula (II)
wherein
D is a dendritic core having a core multiplicity ND,
L is a bidentate, tridentate, tetradentate, pentadentate or a hexadentate redox active monomeric moiety comprising a carbocyclic structure and at least one carbonyl group or a carboxyl group presented on the carbocyclic structure, L having a L-multiplicity N L and a redox potential of 0.5 V to 3.0 V with reference to Li/Li+ electrode potential under standard conditions or −2.54 V to −0.04 V with reference to SHE, and
Y is a comonomeric moiety selected from a bidentate, tridentate, tetradentate, pentadentate and a hexadentate chemical moiety, Y having a Y-multiplicity N Y ,
wherein
N D number of L is covalently linked to D,
(N L −1) number of Y is covalently linked to each L for each successive generation,
N Y number of L is covalently linked to Y,
and wherein
N D ranges from 3 to 6,
N Y and N L range independently from 2 to 6, with the proviso that at least one of N Y and N L is at least 3, and
G≥3.
2 . The dendritic polymer of claim 1 , wherein
the dendritic core D has a core multiplicity N D =3,
L is a bidentate redox active monomeric moiety having a L-multiplicity N L =2
Y is a tridentate chemical moiety, having a Y-multiplicity N Y =3
and wherein the number of Y covalently linked to each L for each successive generation forms a dendritic polymeric structure shown in Formula (VI)
3 . The dendritic network polymer of claim 2 , wherein the dendritic polymer is represented by Formula (VII),
in which
the dendritic core D is a tridentate nitrogen linking the bidentate, redox active monomeric moieties L formed by anthraquinone groups
the tridentate chemical moieties Y are tridentate nitrogens linking R40 anthraquinone groups and
the dendritic polymer is terminated with a dimethyl amino group on the R40 anthraquinone groups.
4 . The dendritic polymer of claim 1 , wherein the dendritic polymer is a 4 to 7 generation dendrimer.
5 . The dendritic polymer of claim 1 , wherein the dendritic polymer has a solubility in water of equal or less than 1.0 microgram per mL at room temperature.
6 . The dendritic polymer of claim 1 , wherein the dendritic core D of the dendritic polymer of Formula (II) is selected from the group consisting of
in which, R 12 , is a H, linear or branched, substituted or unsubstituted C1-C4 aliphatic group.
7 . The dendritic polymer of claim 1 , wherein the at least one redox active monomeric moiety L of the dendritic polymer of Formula (II) of the present disclosure is selected from the group consisting of
wherein dash line ----- represents a hydrogen or a single bond, with the proviso that at least two of the dash lines in each formula represents the single bond, and
wherein R 1a-j , R 2a-j , R 3a-j , and R 4a-j each independently represents null, H, OH, NR 10 , SH, wherein R 10 is a H, linear or branched, substituted or unsubstituted C1-C4 aliphatic group, linear or branched, substituted or unsubstituted C1-C4 aliphatic group, wherein dash line ----- represents a hydrogen or a single bond, with the proviso that at least two of the dash lines in each of Formulas (IIIa-j) represents the single bond.
8 . The dendritic polymer of claim 1 , wherein the at least one comonomeric moiety Y of the dendritic polymer of Formula (II) is selected from the group consisting of
wherein R 11 , R 12 , R 13 R 14 , R 15 , R 16 , and R 17 are independently a H, linear or branched, substituted or unsubstituted C1-C4 aliphatic group.
9 . An electrode composition comprising
the dendritic polymer according to claim 1 , together with a binder, and a conductive additive.
10 . The electrode composition of claim 9 , wherein
the binder is selected from one of Polytetrafluoroethylene (PTFE), Styrene-butadiene or styrene-butadiene rubber (SBR), poly(vinylidene-fluoride) (PVDF), poly(tetrafluoroethylene), sodium carboxymethylcellulose (CMC), styrene-butadiene rubber, polyacrylic acid (PAA), polyvinyl alcohol (PVA), polyethylene glycol (PEG or PEO), polyamide imide (PAI), Polyacrylonitrile (PAN) Xanthan Gum, Gum Arabic, and Agar any combination thereof.
11 . The electrode composition of claim 9 , wherein
the conductive additive is selected from one of Carbon Black (Acetylene Black, Super P Li, C-nergy, Ketjen Black-300, Ketjen Black-600), Imerys (Super P, C-Nergy), carbon nanotubes (C-Nano, Tuball), graphene (xGnP Grade R, xGnP Grade H, xGnP Grade C, xGnP Grade M) and Graphite (KS-4, KS-8, KC-4, KC-8), and nickel powder or any combination thereof.
12 . The electrode composition of claim 9 , wherein
the binder is present in 1 to 20% by weight of the total electrode composition, and
the conductive additive is present in 5 to 70% by weight of the total electrode composition.
13 . An electrochemical cell, the electrochemical cell comprising an anode, a cathode and an aqueous electrolyte, wherein the anode electrode and/or the cathode electrode comprise the dendritic polymer according to claim 1 .
14 . The electrochemical cell of claim 13 , wherein the anode electrode and/or the cathode electrode comprises one of nickel hydroxide (Ni(OH) 2 ), lead sulfate (PbSO 4 ), lithium cobalt oxide (LiCoO 2 ), lithium nickel-manganese-cobalt oxide (LiNi x Mn y Co z O 2 wherein x+y+z=1), lithium nickel-cobalt-aluminum oxide (LiNi x Co y Al 2 O 2 wherein x+y+z=1), lithium manganese oxide (LiMn 2 O 4 ), lithium nickel oxide (LiNiO), lithium vanadium oxide (LiV 2 O 5 ) and lithium iron phosphate (LiFePO 4 ).
15 . The electrochemical cell of claim 13 , wherein
the aqueous electrolyte has a pH value from 0 to 14 at room temperature,
the aqueous electrolyte comprises at least one salt, and
the salt comprises at least one cation selected from lithium, sodium and potassium or any combination thereof, and at least one anion selected from sulfate, sulfonate, phosphate, phosphonate, carboxylate, acetate, hydroxide, perchlorate, trifluoroacetate, halide, fluoride, chloride, bromide, iodide or any combination thereof.
16 . The electrochemical cell of claim 13 , wherein the at least one salt has a concentration ranging from 0.01 M to 10 M.
17 . A battery comprising one or more electrochemical cells of claim 13 .
18 . A method for making a dendritic polymer, the method comprising
providing a core monomer having dendritic core D having a core multiplicity N D ,
providing a redox active monomer comprising a redox active monomeric moiety L comprising a redox active monomeric moiety Q comprising a carbocyclic structure and at least one carbonyl group or a carboxyl group presented on the carbocyclic structure optionally substituted with three to five functional groups, the redox active monomeric moiety L having a redox potential of 0.5 V to 3.0 V with reference to Li/Li+ electrode potential under standard conditions or −2.54 V to −0.04 V with reference to SHE, the redox active monomeric moiety L having a L-multiplicity N L ,
providing a comonomer comprising a comonomeric chemical moiety Y substituted with two to six functional groups and capable of reacting with the redox active monomer, the comonomeric moiety Y having a Y-multiplicity N Y ,
contacting the core monomer with the redox active monomer to form an intermediate I 0 of formula IIa
[D-L ND ND-1 ] G-1 (IIa)
contacting the intermediate I 0 of formula IIa with the comonomer to form a dendritic polymer generation,
repeating
contacting the core monomer with the redox active monomer to form an intermediate I 0 and
contacting the intermediate I 0 with the comonomer to form a dendritic polymer generation,
to provide a dendritic polymer of Formula (II) having a generation G of at least 3 according to claim 1 .