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11 July 2012

Donald Sadoway

Donald Sadoway giving a 3.091 lecture on 9 December 2009
Donald Robert Sadoway is the current (as of November 2008) John F. Elliott Professor of Materials Chemistry at the Massachusetts Institute of Technology. A faculty member in the Department of Materials Science Engineering, he is a noted expert on batteries and has


Born March 7, 1950 in Toronto, Ontario, he did both his undergraduate and graduate studies at the University of Toronto, receiving his PhD in 1977. There he focused his studies on chemical metallurgy.[2] In 1977, he received a NATO postdoctoral fellowship from the National Research Council of Canada and came to MIT to conduct his postdoctoral research under Julian Szekely. Sadoway joined the MIT faculty in 1978.[3]


As a researcher, Sadoway has focused on environmental ways to extract metals from their ores, as well as producing more efficient batteries.[3] His research has often been driven by the desire to reduce the carbon pollution output by various industries.[2] He is the co-inventor of a solid polymer electrolyte. This material, used in his "sLimcell" has the capability of allowing batteries to offer twice as much power per kilogram as is possible in current lithium ion batteries.[4]
In August 2006, a team that he led demonstrated the feasibility of extracting iron from its ore through molten oxide electrolysis. When powered exclusively by renewable electricity, this technique has the potential to eliminate the carbon dioxide emissions that are generated through traditional methods.[5]
In 2009, Sadoway proposed a very low cost molten salt battery based on magnesium and antimony separated by a salt[6] that could be used in stationary energy storage systems.[7] Research on this concept is being funded by ARPA-E.[8] Experimental data showed 69% storage efficiency with good storage capacity and relatively low leakage.[9]


Professor Sadoway teaches 3.091 Introduction to Solid State Chemistry,[10] one of the largest classes at MIT. Sadoway's animated teaching style is popular with students and freshman enrollment in the course has steadily increased while enrollment in MIT 5.111 and MIT 5.112, the other freshman chemistry offerings at MIT, has declined.
In contrast to much of the Institute's learning and teaching technique, Prof. Sadoway demands that students complete one quiz of memorization, which admittedly is a small percentage (<1%) of students' final grades. He requires that students memorize the Periodic table, saying that he would not accept the reality where an MIT student does not know where to find an element on the table. Clever mnemonics are often used to quickly memorize and subsequently forget the table.
Sadoway refers to exams as "celebrations of learning". His weekly tests are returned in no later than twenty-four hours, his recitation instructors are required to grade quickly in order to provide instant feedback.
In the fall of 2007 the number of students registering for 3.091 reached 570 students, over half the freshman class. The largest lecture hall available on campus seats 566 students, enough to amply house the class. Sadoway much prefers teaching in one of the smaller lecture halls, seating only 450; as such the Institute had to take the unprecedented step of streaming digital video of the lecture into an overflow room to accommodate all the students interested in taking the course.[11] In contrast, most classes at MIT are relatively small with approximately 60% of classes at MIT having fewer than 20 students.[12] The popularity of this course has reached outside of the MIT campus as a result of the MIT OpenCourseWare initiative. This is seen in a comment by Bill Gates who told the Seattle Post-Intelligencer "... Everybody should watch chemistry lectures -- they're far better than you think. Don Sadoway, MIT -- best chemistry lessons anywhere. Unbelievable".[13]
Professor Sadoway's lectures often include the history of science, especially with respect to the Nobel Prize. Sadoway gives out "library assignments" in which he asks students to research Nobel Prize winning papers. He begins his lectures by playing music, which has some connection with the lecture's material. He ends his lectures with five minutes of culturally relevant material, such as automotive exhaust processing or his own work on batteries.


He is one of Time's Top 100 Most Influential People in the World in 2012 for his continuing work in improved batteries.[14]


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