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Your search keyword '"Liao, Chen"' showing total 23 results
Start Over Author "Liao, Chen" Journal journal of the electrochemical society
23 results on '"Liao, Chen"'

12. Tris(trimethylsilyl) Phosphite (TMSPi) and Triethyl Phosphite (TEPi) as Electrolyte Additives for Lithium Ion Batteries: Mechanistic Insights into Differences during LiNi0.5Mn0.3Co0.2O2-Graphite Full Cell Cycling

Author

Peebles, Cameron, primary, Sahore, Ritu, additional, Gilbert, James A., additional, Garcia, Juan C., additional, Tornheim, Adam, additional, Bareño, Javier, additional, Iddir, Hakim, additional, Liao, Chen, additional, and Abraham, Daniel P., additional

Published
2017
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18. Current Collector Corrosion in Ca-Ion Batteries

Author

Lipson, Albert L., primary, Proffit, Danielle L., additional, Pan, Baofei, additional, Fister, Timothy T., additional, Liao, Chen, additional, Burrell, Anthony K., additional, Vaughey, John T., additional, and Ingram, Brian J., additional

Published
2015
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19. Investigation of Glutaric Anhydride as an Electrolyte Additive for Graphite/LiNi0.5Mn0.3Co0.2O2 Full Cells

Author

Peebles, Cameron, He, Meinan, Feng, Zhenxing, Su, Cheung, Zeng, Li, Bedzyk, Michael J., Fenter, Paul, Wang, Yan, Zhang, Zhengcheng, and Liao, Chen

Abstract

The effects of glutaric anhydride (GA) as an electrolyte additive for graphite/LiNi0.5Mn0.3Co0.2O2 full cells operating between 3.0-4.4 V were investigated. Linear scan voltammetry (LSV) revealed that GA preferentially oxidized prior to the carbonate-based electrolyte while Li/graphite half cells revealed that GA can suppress electrolyte decomposition on the graphite electrode giving rise to the bifunctional nature of this additive. The addition of both 0.5 and 1.0 wt% of GA into the carbonate-based electrolyte resulted in superior cycling performance compared to the baseline electrolyte as demonstrated by the slight increase in initial capacities and significant increases in capacity retention over 117 cycles at C/3. Electrochemical impedance spectroscopy (EIS) showed that while the overall impedance of the GA containing cells was higher than the cells with the baseline electrolyte the change in impedance between post-formation and post-cycling was smallest for the cells containing GA. Additionally, X-ray photoelectron spectroscopy (XPS) analysis confirmed that GA decomposed on the cathode surface leading to an increase in oxygen-containing species, a decrease in LiF species and a simultaneous increase in LixPOyFz species.

Published
2017

21. Communication-Ligand-Dependent Electrochemical Activity for Mn2+ in Lithium-Ion Electrolyte Solutions

Author

Tornheim, Adam, Kirner, Joel, Sahore, Ritu, Lau, Cheong, O, Daniel C., Dose, Wesley M., Lee, Wook, Liao, Chen, Zhang, Zhengcheng, Balasubramanian, Mahalingam, and Croy, Jason R.

Abstract

Manganese dissolution from metal-oxide cathodes, and subsequent deposition at graphitic anodes, are considered to be key causes of capacity fade in lithium-ion batteries. The Mn2+ redox state is thought to be the major solvated Mn species, but its coordination environment is not well understood. Herein, we present the effects of Mn2+-containing electrolytes (Mn(PF6)2 and Mn(TFSI)2) on the performance of lithium-iron-phosphate//graphite (LFP//Gr) cells. Clear differences in first-cycle capacities and subsequent cycling efficiencies depending on the associated counter-ion indicate that the Mn coordination environment has a profound effect on the associated electrochemical degradation mechanisms.

Published
2019

23. Investigation of Glutaric Anhydride as an Electrolyte Additive for Graphite/LiNi0.5Mn0.3Co0.2O2Full Cells

Author

Peebles, Cameron, He, Meinan, Feng, Zhenxing, Su, Chi-Cheung, Zeng, Li, Bedzyk, Michael J., Fenter, Paul, Wang, Yan, Zhang, Zhengcheng, and Liao, Chen

Abstract

The effects of glutaric anhydride (GA) as an electrolyte additive for graphite/LiNi0.5Mn0.3Co0.2O2full cells operating between 3.0–4.4 V were investigated. Linear scan voltammetry (LSV) revealed that GA preferentially oxidized prior to the carbonate-based electrolyte while Li/graphite half cells revealed that GA can suppress electrolyte decomposition on the graphite electrode giving rise to the bifunctional nature of this additive. The addition of both 0.5 and 1.0 wt% of GA into the carbonate-based electrolyte resulted in superior cycling performance compared to the baseline electrolyte as demonstrated by the slight increase in initial capacities and significant increases in capacity retention over 117 cycles at C/3. Electrochemical impedance spectroscopy (EIS) showed that while the overall impedance of the GA containing cells was higher than the cells with the baseline electrolyte the change in impedance between post-formation and post-cycling was smallest for the cells containing GA. Additionally, X-ray photoelectron spectroscopy (XPS) analysis confirmed that GA decomposed on the cathode surface leading to an increase in oxygen-containing species, a decrease in LiF species and a simultaneous increase in LixPOyFzspecies.

Published
2017
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