The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery Cathode
High theoretical energy density endows lithium–sulfur batteries to be a promising candidate of the secondary batteries. Numerous studies have been implemented relying on exploring efficient host materials or separator modifying layers to solve the problematic shuttling and insufficient conversion of...
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MDPI AG
2022-11-01
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| Online Access: | https://www.mdpi.com/2073-4352/12/11/1596 |
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| author | Zhiyuan Pang Linglong Kong Hongzhou Zhang Bin Deng Dawei Song Xixi Shi Yue Ma Lianqi Zhang |
| author_facet | Zhiyuan Pang Linglong Kong Hongzhou Zhang Bin Deng Dawei Song Xixi Shi Yue Ma Lianqi Zhang |
| author_sort | Zhiyuan Pang |
| collection | DOAJ |
| description | High theoretical energy density endows lithium–sulfur batteries to be a promising candidate of the secondary batteries. Numerous studies have been implemented relying on exploring efficient host materials or separator modifying layers to solve the problematic shuttling and insufficient conversion of soluble polysulfides, whereas few studies have focused on the modification of the cathode collector. Herein, a high-performance sulfur cathode is manufactured with carbon paper/MnO<sub>2</sub> as the cathode collector and liquid lithium polysulfides as the electrode material. The interface of carbon paper/MnO<sub>2</sub> is proposed to afford fast electronic transport, strong chemical adsorption, and effective electrocatalysis to confine the diffusion of lithium polysulfides and facilitate their conversion during the charge/discharge process. More importantly, with no conductive additives and binders assisting, the gravimetric energy density of the sulfur cathode could be largely improved. Specifically, lithium–sulfur batteries using carbon paper/MnO<sub>2</sub> as a cathode collector could stably circulate for 200 cycles at 0.2 C with a capacity of 664 mAh g<sup>−1</sup>, which is higher than that of carbon paper as a cathode collector (486 mAh g<sup>−1</sup>). This work may provide a new perspective to enhance the electrochemical performance of lithium–sulfur batteries by optimizing the cathode collector. |
| first_indexed | 2024-03-09T19:10:03Z |
| format | Article |
| id | doaj.art-20c7fa217a2d4987922e90d6e6cefd00 |
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| language | English |
| last_indexed | 2024-03-09T19:10:03Z |
| publishDate | 2022-11-01 |
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| series | Crystals |
| spelling | doaj.art-20c7fa217a2d4987922e90d6e6cefd002023-11-24T04:15:51ZengMDPI AGCrystals2073-43522022-11-011211159610.3390/cryst12111596The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery CathodeZhiyuan Pang0Linglong Kong1Hongzhou Zhang2Bin Deng3Dawei Song4Xixi Shi5Yue Ma6Lianqi Zhang7Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, ChinaState Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River, School of Forestry, Shandong Agricultural University, Taian 271018, ChinaTianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, ChinaFeicheng Science and Technology Innovation Research Center, Feicheng 271600, ChinaTianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, ChinaTianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, ChinaHigh theoretical energy density endows lithium–sulfur batteries to be a promising candidate of the secondary batteries. Numerous studies have been implemented relying on exploring efficient host materials or separator modifying layers to solve the problematic shuttling and insufficient conversion of soluble polysulfides, whereas few studies have focused on the modification of the cathode collector. Herein, a high-performance sulfur cathode is manufactured with carbon paper/MnO<sub>2</sub> as the cathode collector and liquid lithium polysulfides as the electrode material. The interface of carbon paper/MnO<sub>2</sub> is proposed to afford fast electronic transport, strong chemical adsorption, and effective electrocatalysis to confine the diffusion of lithium polysulfides and facilitate their conversion during the charge/discharge process. More importantly, with no conductive additives and binders assisting, the gravimetric energy density of the sulfur cathode could be largely improved. Specifically, lithium–sulfur batteries using carbon paper/MnO<sub>2</sub> as a cathode collector could stably circulate for 200 cycles at 0.2 C with a capacity of 664 mAh g<sup>−1</sup>, which is higher than that of carbon paper as a cathode collector (486 mAh g<sup>−1</sup>). This work may provide a new perspective to enhance the electrochemical performance of lithium–sulfur batteries by optimizing the cathode collector.https://www.mdpi.com/2073-4352/12/11/1596Li–S batterycarbon paperMnO<sub>2</sub>hybrid collectoroptimization |
| spellingShingle | Zhiyuan Pang Linglong Kong Hongzhou Zhang Bin Deng Dawei Song Xixi Shi Yue Ma Lianqi Zhang The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery Cathode Crystals Li–S battery carbon paper MnO<sub>2</sub> hybrid collector optimization |
| title | The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery Cathode |
| title_full | The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery Cathode |
| title_fullStr | The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery Cathode |
| title_full_unstemmed | The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery Cathode |
| title_short | The Optimization of a Carbon Paper/MnO<sub>2</sub> Composite Current Collector for Manufacturing a High-Performance Li–S Battery Cathode |
| title_sort | optimization of a carbon paper mno sub 2 sub composite current collector for manufacturing a high performance li s battery cathode |
| topic | Li–S battery carbon paper MnO<sub>2</sub> hybrid collector optimization |
| url | https://www.mdpi.com/2073-4352/12/11/1596 |
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