{"id":467,"date":"2023-07-20T16:35:59","date_gmt":"2023-07-20T16:35:59","guid":{"rendered":"https:\/\/lab-schougaard.uqam.ca\/?page_id=467"},"modified":"2023-07-20T16:35:59","modified_gmt":"2023-07-20T16:35:59","slug":"in-situ-in-operando-electrochemical-studies-of-li-ion-batteries","status":"publish","type":"page","link":"https:\/\/lab-schougaard.uqam.ca\/?page_id=467","title":{"rendered":"In Situ\/ In Operando Electrochemical Studies of Li-ion Batteries"},"content":{"rendered":"\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

In Situ Electrochemical Studies of Li-Ion Batteries<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
Detection of the transition metal release from battery material using an electrochemical microprobe.\u00a0<\/span><\/strong><\/div>
In recent years Li-ion batteries (LIB)\u00a0performance greatly improved, because of new developments in the electrode materials. Manganese used in positive LIB electrode materials, like Mn oxides (LMO or spinel-Li\u2093Mn\u2082O\u2084), \u00a0shows excellent electrochemical performance and some fundamental advantages like lower cost and less toxicity in comparison with e.g. LiCoO\u2082\u00a0containing material.\u00a0\u200bWe electrochemically deposited a mercury drop onto the tip of a 25 \u00b5m Pt disk microelectrodes in order to form Pt\/Hg microelectrodes in a glovebox to detect Mn ions. \u00a0<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

The combination of this electrochemical probe with square-wave voltammetry\u00a0makes it possible to measure\u00a0 Mn\u00b2\u207a\u00a0ions in solution with a low detection limit (14 \u00b5M).\u00a0\u00a0 In combination with Scanning Electrochemical Microscopy (SECM), this should provide a new technique for identifying local manganese dissolution from battery electrodes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Local detection of the li ion diffusion using a Pt\/metal ultramicroelectrode\u00a0Lithium-ion batteries.\u00a0<\/strong>\u200b<\/p>

Local lithium ion detection in the Lithium Ion Batteries (LIBs) is important as\u00a0 ions Li\u207a\u00a0ions\u00a0are exchanged between cathode and anode material via the electrolyte during LIBs charge\/ discharge. Therefore, the goal here is to develop a technique, with better\u00a0reproducibility than current detection techniques, to detect lithium ions transport within the electrolyte filled porous network of the cathode. Scanning electrochemical microscopy (SECM) is used for Li\u207a\u00a0detection and to monitor its in situ electrochemical behavior. A Ga capped Pt (Pt\/Ga) ultramicroelectrode is employed as a probe of SECM to detect lithium ions in a nonaqueous battery electrolyte.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

In Operando Electrochemical Studies of Li-Ion Batteries<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

What if you could see inside a Li-ion battery while you operate it? This is the concept behind \u201coperando\u201d methodologies which allow researchers to experimentally observe fundamental processes that occur within batteries during charge and discharge. \u00a0One of the most important requirements of modern battery systems for automotive electrification is the ability for fast charge. The speed at which we can charge a battery is often limited by how fast Li-ions can travel from one electrode to the other (solution-phase) or how fast Li can diffuse within the active material (solid-phase).\u00a0<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t
\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

This research project focuses on using\u00a0operando<\/em>\u00a0X-ray fluorescence and X-ray diffraction to gain valuable information about the solution-phase and solid-phase mass transport in Li-ion batteries. As these X-ray beams must be as small and bright as possible for optimal resolution and rapid data acquisition, a synchrotron radiation source is used. Our team has made multiple trips to the Canadian Light Source (Canada\u2019s only synchrotron) as well as the European Synchrotron Radiation Facility (ESRF) to perform these measurements using a home-made X-ray transparent cell.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

In Situ Electrochemical Studies of Li-Ion Batteries Detection of the transition metal release from battery material using an electrochemical microprobe. In recent years Li-ion batteries (LIB) performance greatly improved, because of new developments in the electrode materials. Manganese used in positive LIB electrode materials, like Mn oxides (LMO or spinel-Li\u2093Mn\u2082O\u2084),  shows excellent electrochemical performance and some fundamental […]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-467","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=\/wp\/v2\/pages\/467","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=467"}],"version-history":[{"count":8,"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=\/wp\/v2\/pages\/467\/revisions"}],"predecessor-version":[{"id":526,"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=\/wp\/v2\/pages\/467\/revisions\/526"}],"wp:attachment":[{"href":"https:\/\/lab-schougaard.uqam.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}