Advanced Higher Chemistry 2017-18

Advanced Higher Chemistry 2017-18

Author: SQA.

Publisher: Hodder Gibson

Published: 2017-11-24

Total Pages: 176

ISBN-13: 9781510421332

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Practise for your exams on the genuine National 5 Past Papers from the Scottish Qualifications Authority. - Discover how to get your best grade with answers checked by senior examiners - Prepare for your exams with study skills guidance sections - Gain vital extra marks and avoid common mistakes with examiner tips


Chemistry 15 Years' Solved Papers For Jee Main & Advanced

Chemistry 15 Years' Solved Papers For Jee Main & Advanced

Author: S. Chand Experts

Publisher: S. Chand Publishing

Published:

Total Pages:

ISBN-13: 9352835131

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Our experts have created Mathematics: 15 Years Solved Papers for JEE Main and Advanced keeping in mind a distinct pattern emerging 2000 onwards and have covered all previous years' questions from 2004. We have chosen solved questions from the year 2004 in order to apprise students of at least two years' of ';subjective type' (numerical value) questions asked in the IIT entrance exam.


Advanced Carbon Chemistry for Rechargeable Batteries

Advanced Carbon Chemistry for Rechargeable Batteries

Author: Hongshuai Hou

Publisher: Frontiers Media SA

Published: 2020-11-18

Total Pages: 95

ISBN-13: 288966127X

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.


A low-concentration sulfone electrolyte enables high-voltage chemistry of lithium-ion batteries

A low-concentration sulfone electrolyte enables high-voltage chemistry of lithium-ion batteries

Author: Ling Lv

Publisher: OAE Publishing Inc.

Published: 2022-08-25

Total Pages: 13

ISBN-13:

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Commercial carbonate electrolytes with poor oxidation stability and high flammability limit the operating voltage of Li-ion batteries (LIBs) to ~4.3 V. As one of the most promising candidates for electrolyte solvents, sulfolane (SL) has received significant interest because of its wide electrochemical window, low flammability and high dielectric permittivity. Unfortunately, SL-based electrolytes with normal concentrations cannot achieve highly reversible Li+ intercalation/deintercalation in graphite anodes due to an ineffective solid electrolyte interface, thus undermining their potential application in LIBs. Here, a low-concentration SL-based electrolyte (LSLE) is developed for high-voltage graphite||LiNi0.8Co0.1Mn0.1O2 (NCM811) full cells. A highly reversible graphite anode can be achieved through the preferential decomposition of the dual-salt LiDFOB-LiBF4 in the LSLE. The addition of fluorobenzene further restrains the decomposition of SL, endowing uniform, robust and inorganic-rich interphases on the electrode surfaces. As a result, the LSLE with improved thermal stability can support the MCMB||NCM811 full cells at 4.4 V, evidenced by an excellent cycling performance with capacity retentions of 83% after 500 cycles at 25 ℃ and 82% after 400 cycles at 60 ℃. We believe that the design of this fluorobenzene-containing LSLE offers an effective routine for next-generation low-cost and safe electrolytes for high-voltage LIBs.


Theoretical Chemistry for Advanced Nanomaterials

Theoretical Chemistry for Advanced Nanomaterials

Author: Taku Onishi

Publisher: Springer Nature

Published: 2020-02-03

Total Pages: 547

ISBN-13: 9811500061

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This book collects recent topics of theoretical chemistry for advanced nanomaterials from the points of view of both computational and experimental chemistry. It is written for computational and experimental chemists, including undergraduate students, who are working with advanced nanomaterials, where collaboration and interplay between computation and experiment are essential. After the general introduction of nanomaterials, several computational approaches are explained in Part II. Each chapter presents not only calculation methods but also concrete calculation results for advanced nanomaterials. Hydride ion conducting nanomaterials, high-k dielectric nanomaterials, and organic electronics are focused on. In Part III, the interplay between computational and experimental approaches is explained. The chapters show calculation results, combined with corresponding experimental data. Dimensionality of nanomaterials, electronic structure of oligomers and nanorods, carbon nanomaterials, and the electronic structure of a nanosized sandwich cluster is looked at carefully. In Part IV, functionality analysis is explained from the point of view of the experimental approach. The emphasis is on the mechanism of photoluminescence and hydrogen generation using silicon nanopowder, the superionic conducting mechanism of glass ceramics, nanoclusters formation on the surface of metal oxides, and the magnetic property of an organic one-dimensional nanochannel. Finally, forthcoming theoretical methods for excited states and quantum dynamics are introduced in Part V.