U nderstanding V o l t a m m e t r y Third Edition A RICHARD G COMPTON CRAIC E BANKS World Scientific U nderstanding VOLTAMMETRY Third Edition Other World Scientific Titles by the Author Understanding Voltammetry: Simulation of Electrode Processes by Richard G Compton, Eduardo Laborda and Kristopher R Ward ISBN: 978-1-78326-323-3 Understanding Voltammetry: Problems and Solutions by Richard G Compton, Christopher Batchelor-McAuley and Edmund J F Dickinson ISBN: 978-1-84816-730-8 ISBN: 978-1-84816-731-5 (pbk) A. G. Stromberg — First Class Scientist, Second Class Citizen: Letters from the GULAG and a History of Electroanalysis in the USSR by Richard G Compton, Alexander S Kabakaev, Michael T Stawpert, Gregory G Wildgoose and Elza A Zakharova ISBN: 978-1-84816-675-2 U nderstanding VOLTAMMETRY Third Edition / / v R G C ichard ompton Oxford University, UK C E B raig anks Manchester Metropolitan University, UK World Scientific NEW JERSEY - LONDON - SINGAPORE • BEIJING • SHANGHAI • HONGKONG • TAIPEI • CHENNAI - TOKYO Published by World Scientific Publishing Europe Ltd. 57 Shelton Street, Covent Garden, London WC2H 9HE Head office: 5 Toh Tuck Link, Singapore 596224 USA office: 27 Warren Street, Suite 401-402, Hackensack, NJ 07601 Library of Congress Cataloging-in-Publication Data Names: Compton, R. G., author. | Banks, Craig E., author. Title: Understanding voltammetry / Richard G Compton (Oxford University, UK), Craig E Banks (Manchester Metropolitan University, UK). Description: 3rd edition. | [Hackensack] New Jersey : World Scientific, [2018] | Includes bibliographical references and index. Identifiers: LCCN 2017060716| ISBN 9781786345264 (he : alk. paper) | ISBN 9781786345295 (pbk : alk. paper) Subjects: LCSH: Voltammetry--Textbooks. Classification: LCC QD116.V64 C65 2018 | DDC 541/.37-dc23 LC record available at https://lccn.loc.gov/2017060716 British Library Cataloguing-in-Publication Data A catalogue record for this book is available from the British Library. Copyright © 2018 by World Scientific Publishing Europe Ltd. All rights reserved. This book, or parts thereof, may not be reproduced in any form or by any means, electronic or mechanical, including photocopying, recording or any information storage and retrieval system now known or to be invented, without written permission from the Publisher. For photocopying of material in this volume, please pay a copying fee through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA. In this case permission to photocopy is not required from the publisher. For any available supplementary material, please visit https://www.worldscientific.com/worldscibooks/l0.1142/QO155#t=suppl Desk Editors: Herbert Moses/Jennifer Brough/Koe Shi Ying Typeset by Stallion Press Email: [email protected] Printed in Singapore “First we’ll make enough sausages and then we wont have any dissidents.” Yuri Andropov (1914-1984) General Secretary of the Communist Party of the Soviet Union, November 1982-February 1984, and formerly head of the KGB This page intentionally left blank Preface This book is not a research monograph, nor is it a reference book. Rather, it is a book designed for those who wish to understand and very likely undertake voltam- metric experiments. The power of electrochemical measurements in respect of thermodynamics, kinetics and analysis is widely recognised and their importance ever growing as scientists seek to explore the links between the molecular, the nano-, the micro- and the macro scales. However, electrochemistry can be unpre dictable to the novice even if they have a strong physical and chemical background, especially if they wish to pursue quantitative measurements. Accordingly, some possible significant experiments are never undertaken, whilst the literature is sadly replete with flawed attempts at rigorous voltammetry. The aim of our book is to provide the reader with a largely self-contained account of the design, explanation and interpretation of experiments centred around various forms of voltammetry (cyclic, pulse, microelectrode, hydrody namic, etc.). We assume a knowledge of Physical Chemistry, but relatively little exposure to electrochemistry in general, or voltammetry in particular. We seek to generate understanding plus insight into the design of real experiments. We hope you grow to share our fascination of the subject! RGC, CEB, October 2006 The second edition of our book contains two new chapters and a few additional sections as well as corrections to the first edition. We thank all those who have commented so positively on the approach taken in the book and especially those who have encouraged us to refine and enlarge the content. RGC, CEB, June 2010 vi i i Understanding Voltammetry The third edition of Understanding Voltammetry contains new material, some updates and further corrections. We thank all who have provided feedback, and especially Elza Zakharova and Alexander Kabakaev for their many discussions and inputs as a result of preparing a Russian translation of the second edition. In addition to the translation, we note the companion books in the Under standing Voltammetry trilogy concerning simulation (Understanding Voltammetry: Simulation of Electrode Processesy Imperial College Press, 2014) and a book of ques tions and answers (Understanding Voltammetry: Problems and Solutionsy Imperial College Press, 2012). RGC, CEB, October 2017 About the Authors Richard G. Compton is Professor of Chemistry and Aldrichian Praelector at Oxford University, United Kingdom where he is also Tutor in Chemistry at St. Johns College. Compton is a Member of the Academia Europea and has broad interests in both fundamen tal and applied electrochemistry and electroanalysis including nano chemical aspects. He is the Physical Chemistry Editor of the Oxford Chemistry Primers series which comprises about 100 short texts covering a wide range of essential topics in the undergraduate chemistry curriculum. He has published more than 1500 papers (h = 96; Web of Science, February 2018) and holds numerous patents. He has been Chinese Academy of Sciences Visiting Professor at the Institute of Physical Sciences, Hefei and is a Lifelong Honorary Professor at Sichuan University. He holds Honorary Doctorates from the EstonianAgricultural University (now the Estonian University of Life Sciences) and Kharkov National University of Radioelectronics (Ukraine) and is a Fellow of the RSC and of the ISE. He is also a Fellow of the Interna tional Union of Pure and Applied Chemistry and a Thomson Reuters Highly Cited Researcher from 2014 to 2017 (see http://highlycited.com/). He is the Founding Editor and Editor-in-Chief of the journal Electrochemistry Communications and joint Editor-in-Chief of the journal Current Opinion in Electrochemistry. Both jour nals are published by Elsevier. IX