Li-ion batteries: news, progress, history and background

RSC - J. Mater. Chem. latest articles Nicola Pinna Seung-Ho Yu, Andrea Pucci, Tobias Herntrich, Marc-Georg Willinger, Seung-Hwan Baek, Yung-Eun Sung, Nicola Pinna A one-pot template-free solvothermal synthesis of crystalline Li 4 Ti 5 O 12   nanostructures based on the “benzyl alcohol route” is introduced. The 1–2 µm sized nanostructured spherical particles are constituted of nanocrystallites in the size range of a few nm. This is the first report showing that crystalline Li 4 Ti 5 O 12   can be directly obtained by soft chemistry solution routes. The as-synthesized crystalline nanostructures show good lithium intercalation/deintercalation performances at high rates (up to 30 C) and good cycling stabilities. Annealing the nanostructures at 750 °C improves the performance, which approaches the theoretical capacity of Li 4 Ti 5 O 12   with no noticeable (less than 5%) capacity loss after 200 cycles. (Paper from J. Mater. Chem.) Seung-Ho Yu, J. Mater. Chem., 2011, ...

There are disclosed electrolytes comprising solutions of lithium salts with large anions in polar aprotic solvents with a particular concentration of background salts. The concentration of the background salts is selected to be equal or close to the concentration of a saturated solution of these salts in the aprotic solvents used. The electrolytes disclosed can be used in chemical sources of electric energy such as secondary (rechargeable) cells and batteries comprising sulphur-based positive active materials. The use of such electrolytes increases cycling efficiency and cycle life of the cells and batteries. Inventors: Vladimir KOLOSNITSYN, Elena KARASEVA  Application number: 13/153,157 Publication number: US 2011/0236766 A1 Filing date: Jun 3, 2011 Fig. 1 Charge/discharge capacity fade of standard Li-S cell Fig. 9 Charge/discharge capacity fade of Li-S cell with a saturated electrolyte solution as 1.7M of LiClO4 in methylpropylsulfone @ 0.25C ch/dch Fast...

Porous SnO2/layered titanate nanohybrid with enhanced electrochemical performance for reversible lithium storage : Chem. Commun. , 2012, Advance Article DOI : 10.1039/C1CC14769B, Communication Joo-Hee Kang, Seung-Min Paek, Jin-Ho Choy Porous heterostructure of SnO 2 -layered titanate nanohybrid has been synthesized via an exfoliation/reassembling process. This hybridization gives rise to a remarkable enhancement of discharge capacity with a good capacity retention. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry (Via Science JournalFeeds ) Related articles Researching graphene nanoelectronics for a post-silicon world Rensselaer Polytechnic Institute researchers use supercomputer to study effects of stacking graphene nanoribbons (nanotech-now.com)

New Patent Application: Electrode Having Solid Electrolyte Interface And Secondary Battery Using The Same Original Assignee :  LG Chem, Ltd. Application number : 13/043,722 Publication number : US 2011/0159378 A1 Filing date : Mar 9, 2011 from the abstract: Disclosed is an electrode having a solid electrolyte interface (SEI) film partially or totally formed on a surface thereof, the SEI film being formed by electrical reduction of a cyclic diester compound and a sulfinyl group-containing compound. Further, a secondary battery comprising the electrode is disclosed. from the climes: A secondary battery comprising a cathode , an anode and an electrolyte, wherein the electrolyte comprises an electrolyte salt and an electrolyte solvent, the electrolyte further comprising both a cyclic diester compound and a sulfinyl group-containing compound; and/or the cathode or the anode is the electrode having a solid electrolyte interface (SEI) film partially or ...