Discipline: Nanoscience or Materials Science
Subcategory: Materials Science
Jacob Strimaitis - Norfolk State University
Co-Author(s): Samuel Danquah, Norfolk State University, Norfolk, VA; Clifford Denize, Norfolk State University, Norfolk, VA; Sangram K. Pradhan, Norfolk State University, Norfolk, VA; Messaoud Bahoura, Norfolk State University, Norfolk, VA
Porous CaFe2O4 (pCFO), a promising conversion-type anode material for next-generation lithium-ion batteries (LIBs) and hybrid supercapacitors (HSCs), is relatively easy to produce via solution combustion synthesis (SCS). Fully calcined pCFO also shows formidable electrochemical performance compared to industry-standard graphite and classic conversion-type Fe2O3. However, the effects of post-synthesis calcination temperatures on pCFO have not been thoroughly investigated. Herein, we demonstrate that pCFO produced via SCS and calcined to various temperatures shows remarkable differences in morphology and composition. When assembled in coin cells for electrochemical analysis, pCFO shows a tradeoff in capacity and durability with temperature: pCFO samples heated to moderately-high temperatures (i.e., 500 ⁰C and 700 ⁰C) achieve high capacities during relatively short rate performance tests but experience significant drops in capacity between 20-150 subsequent charge-discharge cycles, whereas pCFO heated to full calcination (i.e., 900 ⁰C) shows moderate capacities in its rate performance test but comparatively stable capacities across 500 subsequent charge-discharge cycles. This study highlights the importance of calcination temperature in anode materials preparation, with implications for future improvements when implemented in LIBs and HSCs.
Funder Acknowledgement(s): This work is supported by the NSF-CREST Grant number HRD 1547771 and NSF-CREST Grant number HRD 1036494.
Faculty Advisor: Professor Messaoud Bahoura, firstname.lastname@example.org
Role: 95+% of all components, including idea generation, experimental design/setup, experimental running, data collection/analysis, and presentation drafting.