Litium ion battery anode based on carbon film

US20110300448A1: Lithium battery useful in portable electronic devices e.g. mobile phones, comprises anode and cathode comprising first and second carbon nanotube structures respectively, unit for separating the anode from the cathode, and container

An anode of a lithium battery includes a composite film, the composite film includes a carbon nanotube film structure and a plurality of nanoscale tin oxide particles dispersed therein. A lithium battery includes at least a cathode, an electrolyte, and the anode mentioned above. A charge/discharge capacity of the lithium battery using the anode can be improved.

Feng, Chen; Beijing, China
Zhang, Hao-Xu; Beijing, China
Jiang, Kai-Li; Beijing, China
Fan, Shou-Shan; Beijing, China

Assignee: HON HAI PRECISION INDUSTRY CO., LTD., Tu-Cheng, Taiwan
Tsinghua University, Beijing, China
other patents from HON HAI PRECISION IND. CO., LTD. (717065) (approx. 2,062)
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Published / Filed: 2011-12-08 / 2011-08-15

Application Number: US2011000209568

Lead-free high-strength high lubrcity copper alloys

espacenet: A lead-free copper alloy includes, in combination by weight, about 10.0% to about 20.0% bismuth, about 0.05% to about 0.3% phosphorous, about 2.2% to about 10.0% tin, up to about 5.0% antimony, and up to about 0.02% boron, the balance essentially copper and incidental elements and impurities. The alloy contains no more than about 0.05 wt. % or 0.10 wt. % lead.

US2011303387
MISRA ABHIJEET [US]; SEBASTIAN JASON [US]; WRIGHT JAMES A [US] +
Applicant(s): QUESTEK INNOVATIONS LLC [US] +

Lithium ion anodes from coconut shells

Factiva; In this work, the potential of using coconut shell, which is very cheap and readily available, for the production of graphitic nanocarbon three-dimensional networks is investigated. The three-dimensional carbon has been produced via the wet-impregnation of coconut shell powder with a transition metal catalyst," scientists writing in the Journal of Solid State Electrochemistry report.

"The novel process employed offers low costs and environmental advantages, with biological waste used in place of carbonaceous precursor as the feedstock. Nanocarbon/tin oxide composites were prepared via wet-impregnation and the solvothermal method, using tin chloride solution with the activated nanocarbon. The electrochemical performances of the three-dimensional nanocarbon doped with tin oxide and of activated nanocarbon alone as anode materials were investigated in rechargeable lithium ion batteries," wrote C.F. Zhang and colleagues, University of Wollongong.

The researchers concluded: "One composite made by using the solvothermal method shows stable cyclic retention up to 100 cycles and delivers a high reversible capacity of about 405 mAh g(-1)."

Zhang and colleagues published their study in the Journal of Solid State Electrochemistry (Three-dimensional nanocarbon and the electrochemistry of nanocarbon/tin oxide for lithium ion batteries. Journal of Solid State Electrochemistry, 2011;15(11-12):2645-2652).

Additional information can be obtained by contacting C.F. Zhang, University of Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia.

Graphite-supported 2,2'-bipyridine-capped ultrafine tin nanoparticles for anodes of lithium-ion batteries

Scopus: Monodisperse and small tin nanoparticles were prepared from a 2,2'-bipyridine-tin( 2) chloride complex using sodium borohydride as reducing agent. When the synthesis was conducted in the presence of graphite, Sn particles with an average diameter of ca. 29nm well-dispersed at the surface of graphite were obtained. Electrochemical lithium insertion was carried out in these materials. A stable reversible capacity of ca. 480mAhg-1, value 37% higher than that of pure graphite, was found.

Nabais, C.a , Schneider, R.b , Willmann, P.c , Billaud, D.a Email this author Correspondence address

a Laboratoire de Chimie du Solide Minral, Nancy-University, CNRS, BP 239, 54506 Vandoeuvre les Nancy Cedex, France
b Laboratoire Ractions et Gnie des Procds (UPR 3349), Nancy-University, CNRS, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France
c Centre National d'Etudes Spatiales, 18 avenue E. Belin, 31055 Toulouse Cedex, France

Tin containing amorphus alloy patent

WO2011159596A1: Bulk-solidifying amorphous alloys have very high strength, high specific strength, high elastic strain limit, and an unusual combination of other engineering properties.

One embodiment provides a composition, the composition comprising: an alloy that is at least partially amorphous and is represented by a chemical formula: (Zr, Ti)aMbNcSnd, wherein: M is at least one transition metal element; N is Al, Be, or both; a, b, c, and d each independently represents an atomic percentage; and a is from about 30 to 70, b is from about 25 to 60, c is from about 5 to 30, and d is from about 0.1 to 5

Amorphous alloys and their in-situ composites generally need high purity constituent elements to achieve optimum mechanical and thermal properties. However, the need for high purity elements limits the number of re-melting and recycling steps to which the alloys can be subjected. This not only increases the cost of manufacturing, but also increases the waste and environmental pollution associated with such manufacturing.

Accordingly, there is a need to develop a new class of engineering alloys that exhibit the same thermal and mechanical properties (e.g., high yield strength, high hardness, high ductility and toughness), yet have a reduced manufacturing cost and environmental impact.

Withdrawal of Significant New Use Rules

Nimonik: EPA is withdrawing two significant new use rules (SNURs) promulgated under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for chemical substances which were the subject of premanufacture notices (PMNs), i.e., rutile, tin zinc, calcium-doped (PMN P-06-36; CAS No. 389623-01-2) and rutile, tin zinc, sodium-doped (PMN P-06-37; CAS No. 389623-07-8). These chemical substances are subject to TSCA section 5(e) consent orders issued by EPA. EPA received a notice of intent to submit adverse comments on the direct final rule. Therefore, the Agency is withdrawing these SNURs, as required under the expedited SNUR rulemaking process. EPA intends to publish in the near future proposed SNURs for these two chemical substances under separate notice and comment procedures.