METHOD FOR FORMING A REDUCED GRAPHENE OXIDE/METAL SULFIDE COMPOSITE AND ITS USE AS AN ANODE FOR BATTERIES

c/o NANYANG TECH- kind of regional protection available): ARIPO (BW; c/o UG; c/o EE

Patent

Atlas literature

Patent

US 9,755,227

METHOD FOR FORMING A REDUCED GRAPHENE OXIDE/METAL SULFIDE COMPOSITE AND ITS USE AS AN ANODE FOR BATTERIES

YU, Yau Wai, Denis, BATABYAL, Sudip Kumar, LEV, Ovadia, GUN, Jenny et al.

NANYANG TECHNOLOGICAL UNIVERSITY, YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM LTD·30 May 2014·US

Drawings

Patent drawings and their descriptions. Click a drawing to enlarge it.

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Claims

Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.

4 independent · 12 dependent

1
Independentreduced graphene oxide/metal sulfide compositegraphene oxideH₂O₂sulfur sourcedoping metal precursor (lithium or sodium)
A method for forming a reduced graphene oxide/metal sulﬁde composite, comprising: adding a dispersion comprising graphene oxide to hydrogen peroxide solution; adding one or more metal complex or salt solution to the dispersion; precipitating one or more peroxide-rich sol onto the graphene oxide surface to form one or more peroxide rich-metal oxide precursor-supported graphene oxide; treating the supported graphene oxide with a sulfur source; heating the treated supported graphene oxide at a ﬁrst temperature to form a powder; and heating the powder at a second temperature to form the reduced graphene oxide/metal sulﬁde composite, wherein adding one or more metal complex or salt solution to the dispersion further comprises adding one or more doping metal precursor to the dispersion and wherein the metal of the one or more doping metal precursor is lithium or sodium.
1. 2
  Dependent← claim 1
  The method of claim 1, wherein precipitating comprises adding an antisolvent to the dispersion.
2. 4
  Dependent← claim 1
  The method of claim 1, wherein the ﬁrst temperature is about 60 ° C to about 100 °C.
3. 6
  Dependent← claim 1
  The method of claim 1, wherein the second temperature is about 200 ° C to about 500 °C.
4. 8
  Dependent← claim 1
  The method of claim 1, wherein at least one of the heating of the treated supported graphene oxide and the heating of the powder is carried out in vacuum.
5. 9
  Dependent← claim 1hydroxoantimonate solutionhydroxostannate solutionhydroxogermanate solutionhydroxozincate solution
  The method of claim 1, wherein the one or more metal complex or salt solution is hydroxoantimonate solution, hydroxostannate solution, hydroxogermanate solution, hydroxozincate solution, or a mixture thereof.
6. 10
  Dependent← claim 1MSx
  The method of claim 1, wherein the metal sulﬁde is MS x, wherein M is a metal selected from the group consisting of Ge, Sn, Zn, Sb, Zn, and In, and 1 < x<3.
7. 11
  Dependent← claim 1Sb₂S₃Sb₂S₅SnSSnS₂ZnSGeS
  The method of claim 1, wherein the metal sulﬁde is antimony (III) sulﬁde (Sb 2 S 3), antimony (V) sulﬁde (Sb 2 S 5), tin (II) sulﬁde (SnS), tin (IV) sulﬁde (SnS₂), zinc sulﬁde (ZnS), germanium (II) sulﬁde (GeS), germanium (IV) sulﬁde (GeS 2), indium (III) sulﬁde (In 2 S 3), or a mixture thereof. 3 Application No. 14/646,261 Reply to Oﬃce Action dated
8. 16
  Dependent← claim 1reduced graphene oxide/metal sulfide compositeSb₂S₃SnS₂lithium ion or sodium ion battery with rGO/metal sulfide anode
  A battery comprising an anode having the claim 15, wherein the battery is a lithium ion or sulﬁde is Sb 2 S 3 or SnS2. composite formed by a method of claim 1. reduced graphene oxide/metal sulﬁde composite of sodium ion battery. 4 withdrawn
13
Independent
13-14. canceled
14
Independent
canceled
15
Independentreduced graphene oxide/metal sulfide composite
A reduced graphene oxide/metal sulﬁde withdrawn

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

lithium ion or sodium ion battery with rGO/metal sulfide anode

reduced graphene oxide/metal sulfide compositeanode

Materials

Materials described outside the worked examples.

reduced graphene oxide/metal sulfide composite

Anode Material

graphene oxide

Precursor

Process steps

Additional fabrication and treatment steps described in the patent.

Chemical Synthesis

Step 1

Temperature

60, 100, 200, 500°C

Ambient

vacuum (optional)

Process details

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
Temperature	60–100 °C	—
Temperature	200–500 °C

Why these are connected

Related documents with shared materials, methods, properties, or citations.

METHOD FOR FORMING A REDUCED GRAPHENE OXIDE/METAL SULFIDE COMPOSITE AND ITS USE AS AN ANODE FOR BATTERIES | Matter42 Literature