Development of a Large-Area, High-Energy-Density Composite Electrode-Based Supercapacitor

Project no. 25281 · Status: Kapanmış (Yayın bekleniyor) · 2023

Summary

<p>Technological&nbsp;advancements&nbsp;worldwide&nbsp;highlight&nbsp;the&nbsp;importance&nbsp;of&nbsp;energy&nbsp;storage&nbsp;as&nbsp;much&nbsp;as&nbsp;energy&nbsp;production.&nbsp;Supercapacitors,&nbsp;with&nbsp;their&nbsp;high&nbsp;power&nbsp;density&nbsp;and&nbsp;charge-discharge&nbsp;cycle&nbsp;numbers,&nbsp;offer&nbsp;an&nbsp;alternative&nbsp;to&nbsp;commercially&nbsp;viable&nbsp;batteries&nbsp;in&nbsp;many&nbsp;forms.&nbsp;Pseudocapacitors&nbsp;(PsCs),&nbsp;a&nbsp;subtype&nbsp;of&nbsp;supercapacitor,&nbsp;can&nbsp;provide&nbsp;high&nbsp;energy&nbsp;density&nbsp;thanks&nbsp;to&nbsp;their&nbsp;battery-like&nbsp;operating&nbsp;principles.&nbsp;Due&nbsp;to&nbsp;the&nbsp;redox&nbsp;reactions&nbsp;occurring&nbsp;in&nbsp;the&nbsp;electrodes&nbsp;of&nbsp;PsCs,&nbsp;it&nbsp;is&nbsp;necessary&nbsp;to&nbsp;use&nbsp;materials&nbsp;with&nbsp;high&nbsp;electrochemical&nbsp;stability&nbsp;and&nbsp;to&nbsp;increase&nbsp;the&nbsp;charge-discharge&nbsp;cycle&nbsp;numbers&nbsp;of&nbsp;the&nbsp;electrodes.&nbsp;This&nbsp;will&nbsp;overcome&nbsp;a&nbsp;significant&nbsp;obstacle&nbsp;in&nbsp;the&nbsp;commercialization&nbsp;process&nbsp;of&nbsp;PsC&nbsp;devices.&nbsp;In&nbsp;this&nbsp;project,&nbsp;3-dimensional&nbsp;(3D)&nbsp;graphene&nbsp;(reduced&nbsp;graphene&nbsp;oxide&nbsp;-&nbsp;RGO)&nbsp;aerogel&nbsp;and&nbsp;composite-based&nbsp;electrodes&nbsp;with&nbsp;highly&nbsp;electrochemically&nbsp;stable&nbsp;phthalocyanine&nbsp;derivatives&nbsp;will&nbsp;be&nbsp;prepared,&nbsp;and&nbsp;PsC&nbsp;devices&nbsp;will&nbsp;be&nbsp;manufactured.&nbsp;For&nbsp;this&nbsp;purpose,</p><ul><li>Phthalocyanine&nbsp;(Pc)&nbsp;derivatives&nbsp;with&nbsp;different&nbsp;redox&nbsp;activities&nbsp;will&nbsp;be&nbsp;synthesized,</li><li>3D&nbsp;RGO&nbsp;aerogel-phthalocyanine&nbsp;composite&nbsp;electrodes&nbsp;(1*1&nbsp;cm2)&nbsp;will&nbsp;be&nbsp;prepared&nbsp;using&nbsp;these&nbsp;compounds,</li><li>PsC&nbsp;devices&nbsp;will&nbsp;be&nbsp;prepared&nbsp;with&nbsp;electrode&nbsp;materials&nbsp;and&nbsp;their&nbsp;electrochemical&nbsp;characterization&nbsp;will&nbsp;be&nbsp;performed&nbsp;to&nbsp;determine&nbsp;the&nbsp;ideal&nbsp;device&nbsp;structure.</li><li>Subsequently,&nbsp;supercapacitor&nbsp;devices&nbsp;with&nbsp;a&nbsp;large&nbsp;area&nbsp;(5*5&nbsp;cm2)&nbsp;will&nbsp;be&nbsp;prepared&nbsp;with&nbsp;optimized&nbsp;structures&nbsp;and&nbsp;their&nbsp;electrical&nbsp;characterization&nbsp;will&nbsp;be&nbsp;performed&nbsp;to&nbsp;optimize&nbsp;the&nbsp;production&nbsp;process.&nbsp;</li></ul><p>In&nbsp;the&nbsp;project,&nbsp;it&nbsp;is&nbsp;planned&nbsp;to&nbsp;synthesize&nbsp;3&nbsp;different&nbsp;series&nbsp;of&nbsp;phthalocyanine&nbsp;derivatives&nbsp;that&nbsp;are&nbsp;expected&nbsp;to&nbsp;have&nbsp;different&nbsp;photophysical&nbsp;and&nbsp;redox&nbsp;activities.&nbsp;The&nbsp;Pc&nbsp;derivatives&nbsp;classified&nbsp;as&nbsp;the&nbsp;A&nbsp;series&nbsp;will&nbsp;contain&nbsp;non-ionic,&nbsp;long-chain&nbsp;imidazole&nbsp;groups&nbsp;and&nbsp;different&nbsp;metal&nbsp;atoms&nbsp;in&nbsp;the&nbsp;peripheral&nbsp;position.&nbsp;Series&nbsp;B&nbsp;will&nbsp;contain&nbsp;ionic&nbsp;imidazolium&nbsp;iodide&nbsp;substituents,&nbsp;while&nbsp;Series&nbsp;C&nbsp;will&nbsp;consist&nbsp;of&nbsp;peripherally&nbsp;substituent-free&nbsp;Pc&nbsp;derivatives&nbsp;to&nbsp;investigate&nbsp;the&nbsp;effect&nbsp;of&nbsp;substituent&nbsp;interaction&nbsp;on&nbsp;device&nbsp;performance.&nbsp;Furthermore,&nbsp;to&nbsp;investigate&nbsp;the&nbsp;effect&nbsp;of&nbsp;metal&nbsp;interaction&nbsp;on&nbsp;device&nbsp;performance,&nbsp;Pc&nbsp;derivatives&nbsp;containing&nbsp;5&nbsp;different&nbsp;metals&nbsp;[Cu,&nbsp;Co,&nbsp;Fe,&nbsp;Ni&nbsp;(redox&nbsp;active)&nbsp;and&nbsp;Zn&nbsp;(redox&nbsp;inactive)]&nbsp;with&nbsp;different&nbsp;redox&nbsp;activities&nbsp;are&nbsp;planned,&nbsp;resulting&nbsp;in&nbsp;a&nbsp;total&nbsp;of&nbsp;18&nbsp;derivatives&nbsp;to&nbsp;be&nbsp;synthesized.&nbsp;The&nbsp;unique&nbsp;value&nbsp;of&nbsp;the&nbsp;project&nbsp;lies&nbsp;in&nbsp;the&nbsp;fact&nbsp;that&nbsp;the&nbsp;presented&nbsp;Pc&nbsp;derivatives&nbsp;with&nbsp;different&nbsp;substituents&nbsp;will&nbsp;be&nbsp;used&nbsp;for&nbsp;the&nbsp;first&nbsp;time&nbsp;in&nbsp;PsC&nbsp;applications&nbsp;as&nbsp;aerogel&nbsp;composites&nbsp;and&nbsp;that&nbsp;a&nbsp;large-area&nbsp;device&nbsp;will&nbsp;be&nbsp;prepared.&nbsp;The&nbsp;project&nbsp;directly&nbsp;contributes&nbsp;to&nbsp;the&nbsp;field&nbsp;of&nbsp;Chemistry&nbsp;within&nbsp;the&nbsp;framework&nbsp;of&nbsp;the&nbsp;11th&nbsp;Development&nbsp;Plan.</p>

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