A simple formula to fabricate high performance lithium metal capacitors
Energy storage technologies that are low-cost, with long cyclability, high rate-capability as well as high energy and power densities are under intensive investigation for sustainable clean energy transition. In this paper, we report a high-performance lithium metal capacitor (LMC) achieved by a sim...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English English |
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Elsevier Ltd
2024
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| Online Access: | http://umpir.ump.edu.my/id/eprint/42952/1/A%20simple%20formula%20to%20fabricate%20high%20performance%20lithium%20metal%20capacitors%20-%20Intro.pdf http://umpir.ump.edu.my/id/eprint/42952/2/A%20simple%20formula%20to%20fabricate%20high%20performance%20lithium%20metal%20capacitors.pdf |
| _version_ | 1825815973470404608 |
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| author | NurulHuda, Shah Ling, JinKiong Ghufira, . Izan Izwan, Misnon Wu, Yi-Shiuan Yang, Chun-Chen Jose, Rajan |
| author_facet | NurulHuda, Shah Ling, JinKiong Ghufira, . Izan Izwan, Misnon Wu, Yi-Shiuan Yang, Chun-Chen Jose, Rajan |
| author_sort | NurulHuda, Shah |
| collection | UMP |
| description | Energy storage technologies that are low-cost, with long cyclability, high rate-capability as well as high energy and power densities are under intensive investigation for sustainable clean energy transition. In this paper, we report a high-performance lithium metal capacitor (LMC) achieved by a simple slurry modification during the cathode film preparation. We show that a mere substitution of ~0.4 wt% conductive carbon by single walled carbon nanotubes (SWCNTs) increased the specific energy of LMCs by 22 %. Porous carbon cathode in this study was obtained from a non-edible biomass (coconut rachis); the optimized sample showed desirable surface characteristics (surface area ~1933 m2⸱g−1 and pore diameter ~2.0 nm) as well as high edge-plane fraction (ratio between relative density of edge and basal plane ~0.4). Cathode with no SWCNTs show a specific capacitance (CS) of ~133 F·g−1@0.1 A·g−1 in the potential window 2.0–4.0 V in the Li//LiPF6//AC device configuration. Removal of conductive carbon by SWCNTs up to ~0.6 wt% increased electrical conductivity of the cathode; however, the charge storability enhancements were only up to ~0.4 wt%. The optimum device delivered a CS ~188 F·g−1@100 mA·g−1 in the potential window 2.0–4.0 V with improved rate capability and cycling stability. Electrochemical impedance spectroscopy was used as a tool to understand the charge kinetics at the electrode; these studies collectively validated the observed enhancements in the charge storability. The device hereby developed showed superior specific capacity than most of the reported lithium-ion capacitors and comparable to some of the LMBs. The perceived 22 % increase in the specific energy by a mere 0.4 wt% SWCNT substitution is a step forward in fabricating the high-performance LMCs in addition to support the sustainability agenda through the carbon-negative precursors. |
| first_indexed | 2024-12-09T02:31:00Z |
| format | Article |
| id | UMPir42952 |
| institution | Universiti Malaysia Pahang |
| language | English English |
| last_indexed | 2024-12-09T02:31:00Z |
| publishDate | 2024 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir429522024-11-20T06:09:33Z http://umpir.ump.edu.my/id/eprint/42952/ A simple formula to fabricate high performance lithium metal capacitors NurulHuda, Shah Ling, JinKiong Ghufira, . Izan Izwan, Misnon Wu, Yi-Shiuan Yang, Chun-Chen Jose, Rajan HD Industries. Land use. Labor Energy storage technologies that are low-cost, with long cyclability, high rate-capability as well as high energy and power densities are under intensive investigation for sustainable clean energy transition. In this paper, we report a high-performance lithium metal capacitor (LMC) achieved by a simple slurry modification during the cathode film preparation. We show that a mere substitution of ~0.4 wt% conductive carbon by single walled carbon nanotubes (SWCNTs) increased the specific energy of LMCs by 22 %. Porous carbon cathode in this study was obtained from a non-edible biomass (coconut rachis); the optimized sample showed desirable surface characteristics (surface area ~1933 m2⸱g−1 and pore diameter ~2.0 nm) as well as high edge-plane fraction (ratio between relative density of edge and basal plane ~0.4). Cathode with no SWCNTs show a specific capacitance (CS) of ~133 F·g−1@0.1 A·g−1 in the potential window 2.0–4.0 V in the Li//LiPF6//AC device configuration. Removal of conductive carbon by SWCNTs up to ~0.6 wt% increased electrical conductivity of the cathode; however, the charge storability enhancements were only up to ~0.4 wt%. The optimum device delivered a CS ~188 F·g−1@100 mA·g−1 in the potential window 2.0–4.0 V with improved rate capability and cycling stability. Electrochemical impedance spectroscopy was used as a tool to understand the charge kinetics at the electrode; these studies collectively validated the observed enhancements in the charge storability. The device hereby developed showed superior specific capacity than most of the reported lithium-ion capacitors and comparable to some of the LMBs. The perceived 22 % increase in the specific energy by a mere 0.4 wt% SWCNT substitution is a step forward in fabricating the high-performance LMCs in addition to support the sustainability agenda through the carbon-negative precursors. Elsevier Ltd 2024 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/42952/1/A%20simple%20formula%20to%20fabricate%20high%20performance%20lithium%20metal%20capacitors%20-%20Intro.pdf pdf en http://umpir.ump.edu.my/id/eprint/42952/2/A%20simple%20formula%20to%20fabricate%20high%20performance%20lithium%20metal%20capacitors.pdf NurulHuda, Shah and Ling, JinKiong and Ghufira, . and Izan Izwan, Misnon and Wu, Yi-Shiuan and Yang, Chun-Chen and Jose, Rajan (2024) A simple formula to fabricate high performance lithium metal capacitors. Journal of Energy Storage, 105 (114682). pp. 1-12. ISSN 2352-152X. (Published) https://doi.org/10.1016/j.est.2024.114682 10.1016/j.est.2024.114682 |
| spellingShingle | HD Industries. Land use. Labor NurulHuda, Shah Ling, JinKiong Ghufira, . Izan Izwan, Misnon Wu, Yi-Shiuan Yang, Chun-Chen Jose, Rajan A simple formula to fabricate high performance lithium metal capacitors |
| title | A simple formula to fabricate high performance lithium metal capacitors |
| title_full | A simple formula to fabricate high performance lithium metal capacitors |
| title_fullStr | A simple formula to fabricate high performance lithium metal capacitors |
| title_full_unstemmed | A simple formula to fabricate high performance lithium metal capacitors |
| title_short | A simple formula to fabricate high performance lithium metal capacitors |
| title_sort | simple formula to fabricate high performance lithium metal capacitors |
| topic | HD Industries. Land use. Labor |
| url | http://umpir.ump.edu.my/id/eprint/42952/1/A%20simple%20formula%20to%20fabricate%20high%20performance%20lithium%20metal%20capacitors%20-%20Intro.pdf http://umpir.ump.edu.my/id/eprint/42952/2/A%20simple%20formula%20to%20fabricate%20high%20performance%20lithium%20metal%20capacitors.pdf |
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