{"id":10232,"date":"2019-04-30T16:29:46","date_gmt":"2019-04-30T16:29:46","guid":{"rendered":"https:\/\/www.thermofisher.com\/blog\/materials\/?p=10232"},"modified":"2026-09-16T15:52:05","modified_gmt":"2026-09-16T20:52:05","slug":"rechargeable-battery-diagnostics-using-raman-spectroscopy","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/materials\/rechargeable-battery-diagnostics-using-raman-spectroscopy\/","title":{"rendered":"Rechargeable Battery Diagnostics Using Raman Spectroscopy"},"content":{"rendered":"

Four examples investigating carbonaceous materials by Raman Spectroscopy for battery & tribological applications using a heating stage \u2013 and one word of warning of data integrity when using the Raman lasers<\/strong><\/p>\n

Turning unwanted items into materials for next-generation batteries, Dr. Vilas Pol\u2019s ViPER group lab at the School of Chemical Engineering & School of Materials Engineering, Purdue University uses Raman extensively in the characterization of novel carbonaceous materials. In our recorded presentation, Professor Pol talks through four specific examples investigating carbonaceous materials by Raman spectroscopy for battery and tribological applications, including the use of an in-situ heated stage to monitor the properties of upcycled packing peanuts into battery anode materials.<\/p>\n

\"Rechargeable

Rechargeable Battery Diagnostics Using Raman Spectroscopy<\/p><\/div>\n

Formerly at Argonne National Lab, Dr. Pol came to Purdue and started the ViPER Experimental Battery Lab. The work is focused on finding an alternative material to lithium for use in rechargeable batteries, and materials that the team is researching include sodium ion, potassium ion and lithium sulfide materials. Sometimes these materials turn out to be useful for many other applications, including tribological applications, as shown in Dr. Pol\u2019s fourth example.<\/p>\n

Batteries are a very complex system, and Dr. Pol shows us that Raman spectroscopy provides a fingerprint of the structural aspects of the molecules of battery material. \u201cRaman spectroscopy provides great evidence if the material is pure or not.\u201d<\/p>\n

Dr. Pol\u2019s lab uses a Thermo Scientific\u2122 DXR Raman spectrometer<\/a> for their experiments. \u201cIt is very user friendly; all the students love it,\u201d Dr. Pol says at about eleven minutes into the webinar. \u201cThey get their data in a quicker fashion.\u201d Their Raman spectrometer also comes with a temperature-controlled stage, and the team uses the stage to heat the sample and take Raman measurements during heating.<\/p>\n

\u201cAnother beauty of technique,\u201d Dr. Pol says about Raman, \u201cis it requires small sample, and sample prep takes about a minute.\u201d Additionally, the technique can be used in situ or ex situ, important for battery materials.<\/p>\n

Dr. Pol describes four separate examples of using Raman Spectroscopy used to design and study the carbonaceous material created in his lab:<\/p>\n

Example 1. Designing 3D Carbon Anodes<\/strong><\/p>\n

Pol\u2019s first example is that of a starch-based precursor studied during in-situ heating. \u201cThe beauty of this process is you can tune the porosity of the material itself based on how fast you are heating it up.\u201d Micron-sized pored of 10-15 um can be achieved via heating rate, and if heated slowly, most of the pores stay closed.<\/p>\n

Example 2 \u2013 Upcycling Packing Peanuts<\/strong><\/p>\n

In Pol\u2019s second example, he describes how battery material can be made of packing peanuts. \u201cWe made carbonaceous material out of both\u201d (expanded polystyrene based and starch based), \u201cbut I will only give examples of the starch based that is similar to the previous studies where we utilized starch and here we get a unique architecture that is sheet-like carbon that is a very good electron material for the sodium ion battery application.\u201d<\/p>\n

\"Rechargeable

Rechargeable Battery Diagnostics Using Raman Spectroscopy<\/p><\/div>\n

The material is heat treated to keep a specific mixture of sp2 and sp3 carbon bonds, which play a key role in the resulting microstructure for the sodium ion to shuttle back and forth within the matrix. Once the material is heat-treated, a highly porous architecture of carbon is achieved. \u201cIt is a high-purity carbon,\u201d as shown by the Raman, Pol says, \u201cAnd the material is ready to use.\u201d<\/p>\n

Using both Raman and scanning electron microscopy, the team found that the material is like a three-dimensional matrix of carbon microsheets (CMS). By adjusting the temperature during heat-treatment, the electrochemical performance of the material can be tuned. (Shown in the \u201celectrochemical performance\u201d slide shown here.) The performance also shows that, \u201cthis can make the batteries safer.\u201d<\/p>\n

\"Rechargeable

Rechargeable Battery Diagnostics Using Raman Spectroscopy<\/p><\/div>\n

Example 3 \u2013 Novel Carbon Spheres for Li-ion Batteries<\/strong><\/p>\n

The effect of pyrolysis temperature on the carbon morphology of these materials, and the resulting battery performance, was studied via Raman spectroscopy in Pol\u2019s third example. For this experiment, the material was heated ex-situ to extremely high temperatures \u2013 600, 900, 1500, and 1800 degrees Celsius. As the material is heat treated, the surface area of the material goes down.<\/p>\n

\"Rechargeable

Rechargeable Battery Diagnostics Using Raman Spectroscopy<\/p><\/div>\n

Example 4 \u2013 Carbon materials for Tribology Applications<\/strong><\/p>\n

In his fourth example, Dr. Pol details the effects of carbon spheres with molybdenum sulfide additives for use in tribology applications. The molybdenum sulfide nanocoating results in excellent tribological performance.<\/p>\n

\"Rechargeable

Rechargeable Battery Diagnostics Using Raman Spectroscopy<\/p><\/div>\n

Watch the webinar here.<\/a><\/p>\n

Further information about the work being done in the ViPER (Vilas Pol\u2019s Energy Research) lab can be found here<\/a>.<\/p>\n

Postscript \u2013<\/strong><\/p>\n

<\/strong><\/p>\n

While not part of Dr. Pol\u2019s webinar, it might be interesting for the reader to learn that this past August, Prof. Vilas Pol set a new Guinness World Record for the fastest time (8 minutes 36 seconds) to arrange all elements of the periodic table. A link to this accomplishment can be found via the ViPER lab website. Congratulations, Prof. Pol from your friends at Thermo Fischer Scientific!<\/p>\n","protected":false},"excerpt":{"rendered":"

Four examples investigating carbonaceous materials by Raman Spectroscopy for battery & tribological applications using a heating stage \u2013 and one word of warning of data integrity when using the Raman lasers Turning unwanted items into materials for next-generation batteries, Dr. Vilas Pol\u2019s ViPER group lab at the School of Chemical Engineering & School of Materials<\/p>\n","protected":false},"author":869,"featured_media":10255,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[977,963,968],"tags":[942,943,955],"division":[],"class_list":{"0":"post-10232","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-raman-spectroscopy","8":"category-scanning-electron-microscopy","9":"category-spectroscopy-spectrometry","10":"tag-energy-materials","11":"tag-environmental","12":"tag-polymer-plastics","13":"entry"},"_selected_authors":[],"_selected_reviewers":[],"acf":[],"yoast_head":"\nRechargeable 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