Lynden A. Archer is a chemical engineer, Joseph Silbert Dean of Engineering, David Croll Director of the Energy Systems Institute, and professor of chemical engineering at Cornell University. He became a fellow of the American Physical Society in 2007 and was elected into the National Academy of Engineering in 2018. Archer's research covers polymer and hybrid materials and finds applications in energy storage technologies. His h-index is 92 by Google Scholar.
Education Archer was born and raised in Guyana and wanted to be a ceramics engineer in high school. He received one of the first international merit scholarships from the University of Southern California in 1986, and as an undergraduate student, decided to work with polymers in his first semester. In 1989, Archer graduated from the University of Southern California with a BS degree in chemical engineering (polymer science). He earned his MS and PhD in chemical engineering from Stanford University in 1990 and 1993, respectively. Subsequently, Archer worked as a postdoctoral member of the technical staff at AT&T Bell Laboratories in 1994.
Career Archer is the James A. Friend Family Distinguished Professor of Chemical and Biomolecular Engineering at Cornell University. He joined the faculty at Cornell in 2000. Archer served as William C. Hooey Director of the Smith School of Chemical and Biomolecular Engineering at Cornell University from 2010 to 2016. Before joining Cornell, Archer was a chemical engineering faculty member at Texas A&M University, 1994–1999. Archer is the David Croll Director of the Cornell Energy Systems Institute. Since 2008, Archer has served as co-director of the KAUST-Cornell Center for Energy and Sustainability. He is also a co-director of Cornell's Center for Nanomaterials Engineering and Technology (CNET). Archer has presented at the Renewable & Sustainable Energy Technology Workshop hosted by the NSF-IGERT Clean Energy for Green Industry graduate fellowship program in 2012. On June 8, 2020, Cornell announced that Archer was named to be Joseph Silbert Dean of Engineering for a five-year term starting on July 1, 2020. Archer is the second Black American to hold this position, after his direct predecessor Lance Collins. Archer is an advisory board member of the Carbon XPrize. He is also on the editorial board of Green Energy & Environment. In 2011, Archer and his wife Shivaun Archer, who works at the Meinig School of Biomedical Engineering at Cornell University, cofounded the technology company NOHMs Technologies Inc. based on his research of Nanoscale Organic Hybrid Materials (NOHMs) licensed from the Cornell Center for Technology Licensing. NOHMs Technologies was selected as one of C&EN’s 10 Start-Ups to Watch in 2015 and was awarded two Small Business Innovation Research Phase I grants. Archer was profiled in the Here and Now program produced by NPR and WBUR in 2016. Scientific American listed Archer's development of an electrochemical cell that captures carbon dioxide among their top 10 "World Changing Ideas" for 2016. In 2018, Archer was elected as a member into the National Academy of Engineering for advances in nanoparticle-polymer hybrid materials and in electrochemical energy storage technologies.
Research Archer's research is focused on transport properties of polymers and organic-inorganic hybrid materials, as well as their applications for energy storage and carbon capture technologies. His research spans several different battery components.
Electrolytes Archer discovered that adding certain halide salts to liquid electrolytes creates nanostructured surface coatings on lithium battery anodes that hinder the development of dendritic structures that grow within the battery cell and typically lead to a decline in performance and overheating. This study was conducted by modeling metal electrodeposition using density functional theory and continuum mechanics. By adding tin to a carbonate-based electrolyte, Archer's group observed the instantaneous formation of a nanometer-thick interface that shields the anode and prevents dendrite formation, but keeps it electrochemically active. Lithium can rapidly alloy with the added tin, which makes the lithium deposition during recharging more uniform. As a result, a lithium anode with a tin interface had a battery life cycle of more than 500 hours at 3 mA/cm2, as opposed to 55 hours without the protective interface. Tin requires minimal amounts of specialized equipment and processing. In a cheaper sodium anode, battery lifetime could be improved from less than 10 to more than 1,700 hours. Another way of preventing dendrite growth in batteries that Archer investigated was the addition of large polymers to the liquid electrolyte. The consistency of the liquid is altered: it becomes viscoelastic, which suppresses electroconvection and therefore prevents flow in patterns that enable dendrite formation. Archer also investigated the polymerization of a previously liquid electrolyte inside the electrochemical cell, which can improve the contact between the electrolyte and electrodes.
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