Abstract
Electrochemical performances of lithium-sulfur batteries have received much progress in recent years. However, their practical deployment encounters challenges with respect to optimizing the cell-fabrication parameters (e.g., amounts of the active material and electrolyte). We present here an “ant-nest-like” cathode substrate with unique architecture to synchronously attain high electrochemical performance and necessary cell-fabrication parameters. The cells with a high sulfur loading (11.5 mg cm−2), a high sulfur content (75 wt%), and a low electrolyte/sulfur ratio (9 μL mg−1) display a high areal capacity and energy density of, respectively, 7 mA h cm−2 and 14 mW h cm−2 with a capacity retention of 70% after 150 cycles. Moreover, the cells exhibit a low self-discharge behavior with a low self-discharge constant of 0.0013 per day and a long rest period of one month. These dynamic and static electrochemical stabilities are attributed to the ant-nest-like structure and low surface area of the cathode substrate that allows, respectively, the accommodation and encapsulation of a high amount of active material and reduces the consumption of electrolyte.
| Original language | English |
|---|---|
| Pages (from-to) | 491-499 |
| Number of pages | 9 |
| Journal | Energy Storage Materials |
| Volume | 18 |
| DOIs | |
| Publication status | Published - 2019 Mar 1 |
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All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- Energy Engineering and Power Technology
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An ant-nest-like cathode substrate for lithium-sulfur batteries with practical cell fabrication parameters. / Yu, Ran; Chung, Sheng Heng; Chen, Chun Hua; Manthiram, Arumugam.
In: Energy Storage Materials, Vol. 18, 01.03.2019, p. 491-499.Research output: Contribution to journal › Article
TY - JOUR
T1 - An ant-nest-like cathode substrate for lithium-sulfur batteries with practical cell fabrication parameters
AU - Yu, Ran
AU - Chung, Sheng Heng
AU - Chen, Chun Hua
AU - Manthiram, Arumugam
PY - 2019/3/1
Y1 - 2019/3/1
N2 - Electrochemical performances of lithium-sulfur batteries have received much progress in recent years. However, their practical deployment encounters challenges with respect to optimizing the cell-fabrication parameters (e.g., amounts of the active material and electrolyte). We present here an “ant-nest-like” cathode substrate with unique architecture to synchronously attain high electrochemical performance and necessary cell-fabrication parameters. The cells with a high sulfur loading (11.5 mg cm−2), a high sulfur content (75 wt%), and a low electrolyte/sulfur ratio (9 μL mg−1) display a high areal capacity and energy density of, respectively, 7 mA h cm−2 and 14 mW h cm−2 with a capacity retention of 70% after 150 cycles. Moreover, the cells exhibit a low self-discharge behavior with a low self-discharge constant of 0.0013 per day and a long rest period of one month. These dynamic and static electrochemical stabilities are attributed to the ant-nest-like structure and low surface area of the cathode substrate that allows, respectively, the accommodation and encapsulation of a high amount of active material and reduces the consumption of electrolyte.
AB - Electrochemical performances of lithium-sulfur batteries have received much progress in recent years. However, their practical deployment encounters challenges with respect to optimizing the cell-fabrication parameters (e.g., amounts of the active material and electrolyte). We present here an “ant-nest-like” cathode substrate with unique architecture to synchronously attain high electrochemical performance and necessary cell-fabrication parameters. The cells with a high sulfur loading (11.5 mg cm−2), a high sulfur content (75 wt%), and a low electrolyte/sulfur ratio (9 μL mg−1) display a high areal capacity and energy density of, respectively, 7 mA h cm−2 and 14 mW h cm−2 with a capacity retention of 70% after 150 cycles. Moreover, the cells exhibit a low self-discharge behavior with a low self-discharge constant of 0.0013 per day and a long rest period of one month. These dynamic and static electrochemical stabilities are attributed to the ant-nest-like structure and low surface area of the cathode substrate that allows, respectively, the accommodation and encapsulation of a high amount of active material and reduces the consumption of electrolyte.
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UR - http://www.scopus.com/inward/citedby.url?scp=85059340528&partnerID=8YFLogxK
U2 - 10.1016/j.ensm.2018.12.025
DO - 10.1016/j.ensm.2018.12.025
M3 - Article
AN - SCOPUS:85059340528
VL - 18
SP - 491
EP - 499
JO - Energy Storage Materials
JF - Energy Storage Materials
SN - 2405-8297
ER -