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Quantum electrochemistry

Quantum electrochemistry is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Quantum electrochemistry rather than just read about it. In short: The scientific school of Quantum electrochemistry began to form in the 1960s under Revaz Dogonadze. Generally speaking, the field comprises the notions arising in electrodynamics, quantum mechanics, and electrochemistry; and so is studied by a very large array of different professional researchers.

Key takeaways

  • Quantum electrochemistry belongs to chemistry; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Quantum electrochemistry to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Quantum electrochemistry from memory before moving on to harder problems.

Reference excerpt

The scientific school of Quantum electrochemistry began to form in the 1960s under Revaz Dogonadze. Generally speaking, the field comprises the notions arising in electrodynamics, quantum mechanics, and electrochemistry; and so is studied by a very large array of different professional researchers. The fields they reside in include, chemical, electrical and mechanical engineering, chemistry and physics. More specifically, quantum electrochemistry is the application of quantum mechanical tools such as density functional theory to the study of electrochemical processes, including electron transfer at electrodes. It also includes Marcus theory and quantum rate theory, the latter being a method of describing electrochemistry using first principle quantum mechanics and concepts of conductance quantum and quantum capacitance.

History and contributors The first development of "quantum electrochemistry" is somewhat difficult to pin down. This is not very surprising, since the development of quantum mechanics to chemistry can be summarized as the application of quantum wave theory models to atoms and molecules. This being the case, electrochemistry, which is particularly concerned with the electronic states of some particular system, is already, by its nature, tied into the quantum mechanical model of the electron in quantum chemistry. There were proponents of quantum electrochemistry, who applied quantum mechanics to electrochemistry with unusual zeal, clarity, and precision. Among them were Revaz Dogonadze and his co-workers. They developed one of the early quantum mechanical models for proton transfer reactions in chemical systems. Dogonadze is a particularly celebrated promoter of quantum electrochemistry and is also credited with forming an international summer school of quantum electrochemistry centered in Yugoslavia. He was the main author of the Quantum-Mechanical Theory of Kinetics of the Elementary Act of Chemical, Electrochemical and Biochemical Processes in Polar Liquids. Another important contributor is Rudolph A. Marcus, who won the Nobel Prize in Chemistry in 1992 for his Theory of Electron Transfer Reactions in Chemical Systems. Recently, Marcus theory has been shown to be part of a more general concept associated with the quantum rate theory, a theory that predicts the rate of electron transfer (electrochemistry being a particular case) based on the uses of conductance quantum and quantum capacitance concepts.

See also Electrochemistry Quantum chemistry Quantum mechanics

References

R.R. Dogonadze, "Theory of Molecular Electrode Kinetics", in: N.S. Hush (Ed.), Reactions of Molecules at Electrodes, Interscience Pub., London, 1971, pp. 135-227 R.R. Dogonadze and Z.D. Urushadze, "Semi-classical Method of Calculation of Rates of Chemical Reactions".- J.Electroanal. Chem., 32, 1971, pp. 235-245 R.P. Bell, "The Proton in Chemistry", Chapman and Hall, London-New York, 1973 N.R. Kestner, J. Logan and J. Jortner, "Thermal Electron Transfer Reactions in Polar Solvents".- J.Phys. Chem., 78, 1974, pp. 2148-2166 R.R. Dogonadze, A.M. Kuznetsov, M.G. Zaqaraya and J. Ulstrup, "A Quantum Theory of Low-Temperature Chemical and Biological Rate Processes", in: B. Chance, R.A. Marcus, D. DeVault, H. Frauenfelder, J.R. Schrieffer and N. Sutin (Eds.), Tunneling in Biological Systems, Academic Press, New York, 1979, pp. 145-171 R.P. Bell, "The Tunneling Effect in Chemistry", Chapman and Hall, London-New York, 1980 R.R. Dogonadze and A.M. Kuznetsov, "Quantum Electrochemical Kinetics: Continuum Theory", in: B.E. Conway, J.O'M. Bockris and E. Yeager (Eds.), Comprehensive Treatise of Electrochemistry, Vol. 7, Plenum Press, New York, 1983, pp. 1-40 "Electrodynamics and Quantum Phenomena at Interfaces" (Proceedings of the International Conference, Telavi, Georgia, October 1-6, 1984), Publishing House "Metsniereba", Tbilisi, 1986, 558 pp. (in English) J.O'M. Bockris, Shahed U.M. Khan, "Quantum Electrochemistry", Plenum Press, New York, 1979, 538 pp. (ISBN 0-306-31143-7) "Standard bearer of Quantum Electrochemistry" ("Flagman Kvantovoy Elektrokhimii"). About Professor Revaz R. Dogonadze. Compiled by Prof. Z.D. Urushadze, Publishing House of the Tbilisi State University, Tbilisi, 1991, 140 pp. (In Russian) M. Bixon and J. Jortner, "Electron Transfer. From Isolated Molecules to Biomolecules".- Adv. in Chem. Physics, 106, 1999, pp. 35-203 "Encyclopedia of Electrochemistry", Vol. 2, Interfacial Kinetics and Mass Transport, Wiley Publishers, 2003, 563 pp. (ISBN 3-527-30394-4). Revaz Dogonadze Memorial Issue of the Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, vol. 204, Lausanne, 1986.

External links Nobel Lecture of Rudolph A. Marcus, 1992 R.R. Dogonadze's Memorial Page International Society of Electrochemistry (ISE)

Worked examples

Example 1 — a first encounter with Quantum electrochemistry

Start with the simplest possible case. Write down what Quantum electrochemistry claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Quantum electrochemistry before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Quantum electrochemistry ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Quantum electrochemistry

In research
Quantum electrochemistry appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Quantum electrochemistry in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Quantum electrochemistry is common in secondary-school and first-year university syllabi. It links to neighbouring topics Electrochemistry, Quantum chemistry, so understanding it makes those chapters shorter.
In everyday life
Look for Quantum electrochemistry outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Quantum electrochemistry in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Quantum electrochemistry means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Quantum electrochemistry out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Quantum electrochemistry in simple terms?

The scientific school of Quantum electrochemistry began to form in the 1960s under Revaz Dogonadze. Generally speaking, the field comprises the notions arising in electrodynamics, quantum mechanics, and electrochemistry; and so is studied by a very large array of different professional researchers.

Why does Quantum electrochemistry matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Quantum electrochemistry?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Quantum electrochemistry.

Tags

  • Electrochemistry
  • Quantum chemistry

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