Synergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries
Lithium-sulfur (Li-S) batteries are deemed to be one of the most optimal solutions for the next generation of high-energy-density and low-cost energy storage systems. However, the low volumetric energy density and short cycle life are a bottleneck for their commercial application. To achieve high en...
Guardado en:
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/8782b79500ce467391c4aac7513499bd |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:8782b79500ce467391c4aac7513499bd |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:8782b79500ce467391c4aac7513499bd2021-11-25T18:30:35ZSynergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries10.3390/nano111128822079-4991https://doaj.org/article/8782b79500ce467391c4aac7513499bd2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2882https://doaj.org/toc/2079-4991Lithium-sulfur (Li-S) batteries are deemed to be one of the most optimal solutions for the next generation of high-energy-density and low-cost energy storage systems. However, the low volumetric energy density and short cycle life are a bottleneck for their commercial application. To achieve high energy density for lithium-sulfur batteries, the concept of synergistic adsorptive–catalytic sites is proposed. Base on this concept, the TiN@C/S/Ta<sub>2</sub>O<sub>5</sub> sulfur electrode with about 90 wt% sulfur content is prepared. TiN contributes its high intrinsic electron conductivity to improve the redox reaction of polysulfides, while Ta<sub>2</sub>O<sub>5</sub> provides strong adsorption capability toward lithium polysulfides (LiPSs). Moreover, the multidimensional carbon structure facilitates the infiltration of electrolytes and the motion of ions and electrons throughout the framework. As a result, the coin Li-S cells with TiN@C/S/Ta<sub>2</sub>O<sub>5</sub> cathode exhibit superior cycle stability with a decent capacity retention of 56.1% over 300 cycles and low capacity fading rate of 0.192% per cycle at 0.5 C. Furthermore, the pouch cells at sulfur loading of 5.3 mg cm<sup>−2</sup> deliver a high areal capacity of 5.8 mAh cm<sup>−2</sup> at low electrolyte/sulfur ratio (E/S, 3.3 μL mg<sup>−1</sup>), implying a high sulfur utilization even under high sulfur loading and lean electrolyte operation.Chong WangJian-Hao LuZi-Long WangAn-Bang WangHao ZhangWei-Kun WangZhao-Qing JinLi-Zhen FanMDPI AGarticlelithium-sulfur batteriescatalystTiN/Ta<sub>2</sub>O<sub>5</sub>multidimensional carbonChemistryQD1-999ENNanomaterials, Vol 11, Iss 2882, p 2882 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
lithium-sulfur batteries catalyst TiN/Ta<sub>2</sub>O<sub>5</sub> multidimensional carbon Chemistry QD1-999 |
| spellingShingle |
lithium-sulfur batteries catalyst TiN/Ta<sub>2</sub>O<sub>5</sub> multidimensional carbon Chemistry QD1-999 Chong Wang Jian-Hao Lu Zi-Long Wang An-Bang Wang Hao Zhang Wei-Kun Wang Zhao-Qing Jin Li-Zhen Fan Synergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries |
| description |
Lithium-sulfur (Li-S) batteries are deemed to be one of the most optimal solutions for the next generation of high-energy-density and low-cost energy storage systems. However, the low volumetric energy density and short cycle life are a bottleneck for their commercial application. To achieve high energy density for lithium-sulfur batteries, the concept of synergistic adsorptive–catalytic sites is proposed. Base on this concept, the TiN@C/S/Ta<sub>2</sub>O<sub>5</sub> sulfur electrode with about 90 wt% sulfur content is prepared. TiN contributes its high intrinsic electron conductivity to improve the redox reaction of polysulfides, while Ta<sub>2</sub>O<sub>5</sub> provides strong adsorption capability toward lithium polysulfides (LiPSs). Moreover, the multidimensional carbon structure facilitates the infiltration of electrolytes and the motion of ions and electrons throughout the framework. As a result, the coin Li-S cells with TiN@C/S/Ta<sub>2</sub>O<sub>5</sub> cathode exhibit superior cycle stability with a decent capacity retention of 56.1% over 300 cycles and low capacity fading rate of 0.192% per cycle at 0.5 C. Furthermore, the pouch cells at sulfur loading of 5.3 mg cm<sup>−2</sup> deliver a high areal capacity of 5.8 mAh cm<sup>−2</sup> at low electrolyte/sulfur ratio (E/S, 3.3 μL mg<sup>−1</sup>), implying a high sulfur utilization even under high sulfur loading and lean electrolyte operation. |
| format |
article |
| author |
Chong Wang Jian-Hao Lu Zi-Long Wang An-Bang Wang Hao Zhang Wei-Kun Wang Zhao-Qing Jin Li-Zhen Fan |
| author_facet |
Chong Wang Jian-Hao Lu Zi-Long Wang An-Bang Wang Hao Zhang Wei-Kun Wang Zhao-Qing Jin Li-Zhen Fan |
| author_sort |
Chong Wang |
| title |
Synergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries |
| title_short |
Synergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries |
| title_full |
Synergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries |
| title_fullStr |
Synergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries |
| title_full_unstemmed |
Synergistic Adsorption-Catalytic Sites TiN/Ta<sub>2</sub>O<sub>5</sub> with Multidimensional Carbon Structure to Enable High-Performance Li-S Batteries |
| title_sort |
synergistic adsorption-catalytic sites tin/ta<sub>2</sub>o<sub>5</sub> with multidimensional carbon structure to enable high-performance li-s batteries |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/8782b79500ce467391c4aac7513499bd |
| work_keys_str_mv |
AT chongwang synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries AT jianhaolu synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries AT zilongwang synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries AT anbangwang synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries AT haozhang synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries AT weikunwang synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries AT zhaoqingjin synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries AT lizhenfan synergisticadsorptioncatalyticsitestintasub2subosub5subwithmultidimensionalcarbonstructuretoenablehighperformancelisbatteries |
| _version_ |
1718411087798337536 |