1
|
Han HG, Yoon SY, Kim BM, Lee MH, Kim S, Shin H, Roh DH, Song HK, Kwon TH. Influence of the Lithium-Ion Concentration in Electrolytes on the Performance of Dye-Sensitized Photorechargeable Batteries. ACS Appl Mater Interfaces 2023; 15:40378-40384. [PMID: 37594234 DOI: 10.1021/acsami.3c05250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Dye-sensitized photorechargeable batteries (DSPBs) have recently gained attention for realizing energy recycling systems under dim light conditions. However, their performance under high storage efficiency (i.e., the capacity charged within a limited time) for practical application remains to be evaluated. Herein, we varied the lithium (Li)-ion concentration, which plays a dual role as energy charging and storage components, to obtain the optimized energy density of DSPBs. Electrochemical studies showed that the Li-ion concentration strongly affected the resistance characteristics of DSPBs. In particular, increasing the Li-ion concentration improved the output capacity and decreased the output voltage. Consequently, the energy density of the finely optimized DSPB improved from 8.73 to 12.64 mWh/cm3 when irradiated by a 1000-lx indoor light-emitting-diode lamp. These findings on the effects of Li-ion concentrations in electrolytes on the performance of DSPBs represent a step forward in realizing the practical application of DSPBs.
Collapse
Affiliation(s)
- Hyun-Gyu Han
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Center for Wave Energy Materials, UNIST, Ulsan 44919, Republic of Korea
- Industrial R&D Center, P2SG Global Corporation, Seoul 05052, Republic of Korea
| | - So Yeon Yoon
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Center for Wave Energy Materials, UNIST, Ulsan 44919, Republic of Korea
| | - Byung-Man Kim
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Department of Engineering, University of Cambridge, Cambridge CB3 0FS, U.K
| | - Myeong-Hee Lee
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, Republic of Korea
| | - Sungtae Kim
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Center for Wave Energy Materials, UNIST, Ulsan 44919, Republic of Korea
| | - HyeonOh Shin
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Center for Wave Energy Materials, UNIST, Ulsan 44919, Republic of Korea
| | - Deok-Ho Roh
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Center for Wave Energy Materials, UNIST, Ulsan 44919, Republic of Korea
| | - Hyun-Kon Song
- School of Energy and Chemical Engineering, UNIST, Ulsan 44919, Republic of Korea
| | - Tae-Hyuk Kwon
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Center for Wave Energy Materials, UNIST, Ulsan 44919, Republic of Korea
- Graduate School of Carbon Neutrality, UNIST, Ulsan 44919, Republic of Korea
- Graduate School of Semiconductor Materials and Device Engineering, UNIST, Ulsan 44919, Republic of Korea
| |
Collapse
|