1 / 30

Badger Electrochemists

Badger Electrochemists. Giddings Award Symposium. Leslie J. Lyons Department of Chemistry Grinnell College Grinnell, Iowa 50112. Congratulations Alanah!. Outline. Badger Electrochemists (1952 - present) Analytical Chemistry at Grinnell Teaching: Introductory and Advanced

jana
Download Presentation

Badger Electrochemists

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Badger Electrochemists Giddings Award Symposium Leslie J. Lyons Department of Chemistry Grinnell College Grinnell, Iowa 50112

  2. CongratulationsAlanah!

  3. Outline • Badger Electrochemists (1952 - present) • Analytical Chemistry at Grinnell • Teaching: Introductory and Advanced • Research: Silicon Electrolytes for Lithium Battery Applications • Acknowledgements

  4. Badger Electrochemistry Home This photograph, from 1978, shows the Daniels building from the northeast, on the corner of University Avenue and Mills Street. Photo courtesy of UW-Madison University Communications.

  5. Shain Chemistry Research Tower Irving Shain Photos courtesy of UW-Madison University Communications.

  6. The Shain Tower Dedication

  7. Primitive cyclic voltammetry in 1963. Students in the laboratory in 1962 (L to R): R. Nicholson, B. Schwarz, B. K. Hovsepiar, and D. Polcyn Photos courtesy of Irving Shain and UW Dept. of Chemistry

  8. NanoBucky Sarah Baker Grinnell ‘01 UW ‘06 http://hamers.chem.wisc.edu/research/nanofibers/index2.htm

  9. Teaching Analytical Chemistry at Grinnell • CHM 130: Inorganic and Analytical Chemistry • Texts: Daniel Harris, Exploring Chemical Analysis, 3rd Ed. and Luther Erickson, Water Module Guidebook • CHM 358: Instrumental Analysis • Text: Skoog, Holler, Nieman, Principles of Instrumental Analysis, 5th Ed.

  10. Instrumental Analysis: Electrochemistry Labs • Iodide Ion Selective Electrode • Polarography of Pb • Anodic Stripping Voltammetry • Cyclic Voltammetry • Rotating Ring Disk Voltammetry • Impedance Spectroscopy • Spectroelectrochemistry

  11. CHM 130 Text Topics • Review of Monoprotic Acid/Base Equilibria • Titrations and Buffers • Polyprotic Acids • Activity • Spectrophotometry and Atomic Spectroscopy • Transition Metal and Coordination Chemistry • Chromatography and Mass Spectrometry • Nuclear Chemistry

  12. Water Module Overview • 5 weeks of lab; 4 weeks of class • Question driven discussion of solubility equilibria, carbonate equilibria, atomic spectroscopy, and electrochemistry • Lab analyses of drinking water from around the country with Grinnell, Chicago, Des Moines, and bottled water providing benchmarks • Lab concludes with student poster presentations

  13. Water Module: Class Sessions (Week 1) • Session 1. Formulating the Questions and Limiting the Exploration: Focus on Ionic Composition • Session 2. Dissolved Ionic Solids: Which ionic salts are present in typical water samples and how did they get there? • Session 3. Major species vs. minor species: Why are so many different concentration units employed to describe concentration levels of the several species present in water samples?

  14. Water Module: Class Sessions (Week 2) • Session 4. Carbon dioxide and dissolved carbonates: Why do virtually all fresh water samples contain bicarbonate as a principal species? • Session 5. Hard water: What is meant by hard water and why does degree of hardness matter? • Session 6. Sodium and yellow flames: How can we determine how much sodium is in the water?

  15. Water Module: Class Sessions (Week 3) • Session 7. Galvanic Cells and Ion Concentrations: How can galvanic cells be used to determine ion concentrations? • Session 8. Potentiometric Titrations: How do ion concentrations change in the course of a titration? • Session 9. Ion-Selective Electrodes and ppm Concentrations: How can we determine ion concentrations at the 1 ppm level?

  16. Water Module: Class Sessions (Week 4) • Session 10. Conservation of Mass and Charge: Does it all add up? (including poster preparation) • Session 11. What does it all mean? What does the complete chemical analysis reveal about the source and treatment of our water samples? • Session 12. Exam

  17. Water Module: Laboratory • L1. pH and Alkalinity by Potentiometric Titration with HCl • L2. Water Hardness (Total and Ca) by EDTA Titration • L3. Chloride by Potentiometric Titration with Silver Nitrate • L4. Sodium Determination by Atomic Emission Measurements • L5. Nitrate by Potentiometry with Ion Selective Electrode • L6. Fluoride by Potentiometry with Ion Selective Electrode • L7. Total Dissolved Solids by Electrical Conductivity

  18. Water Module Student Data Gillis, Goodwin-Kucinsky, Patnaik, Peters, and Yohannes

  19. Silicon Electrolytes for Lithium Battery Applications

  20. In the News • R&D 100 Award, September, 2005 • Scientists craft lithium batteries • by John Potratz • Badger Herald Wednesday, October 5, 2005 • New battery stimulates damaged nerves • By ASTARA MARCH • Science Daily, Oct. 3, 2005

  21. Linear Polysiloxane Ionic Conductivities LiTFSI Macromolecules,2001, 34, 931-934.

  22. Cross-linked Polysiloxane Gel Electrolytes  Macromolecules,2003, 36, 9176.

  23. Liquid Siloxane Electrolytes Chem. Mater.,2006, 18, 1289.

  24. Atlanta ACS Meeting

  25. VT Conductivities of 1NMx/LiTFSI

  26. NMR Studies of Electrolytes 1NM3

  27. Acknowledgements: Grinnell College Marie Mapes Douglas Schumacher Felipe Bautista Jay Jin David Clipson Kate Morcom Yanika Schneider Jacob Barrera Lori Cooke Scott Harring Megan Straughan James Taggart T. Andrew Mobley NSF-REU, NSF-MRI (2), HHMI, Grinnell College 3M Luther E. Erickson, “The Water Module Guidebook”

  28. Acknowledgements: Organosilicon Research Center Robert West David Moline Richard Hooper Qinzheng Wang David Sherlock Ryan West Zhengcheng Zhang Nicholas A. A. Rossi Lingzhi Zhang UW University-Industry Relations Grant NIST-ATP

More Related