Bio-derived 3D TiO2 hollow spheres with a mesocrystal nanostructure to achieve improved electrochemical performance of Na-ion batteries in ether-based electrolytes

文献情報

出版日 2019-01-22

DOI 10.1039/C9TA00334G

インパクトファクター 12.732

著者

Rongrong Yang, Lanju Sun, Wei Liu, Yuan Zhang, Yongpeng Cui, Yongxiu Du, Shuang Liu, Huanlei Wang, Minghua Huang

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要旨

On the way to pursue advanced energy storage cells, an ingenious design and exquisite structure of electrode materials are key to success. In this work, we rationally prepared a unique mesocrystal TiO2 hollow sphere with a mesoporous shell by employing sulfonated-squid ink as templates. This is the first mesocrystal example with a hollow and porous sphere-like scaffold, which contributes to the synthetic coupling effect of SOx2− species and unique marine bio-templates. The specific combination of the 3D hierarchical porous architecture and mesocrystal nature not only offers large surface areas and rich porosity for the transfer of Na-ions during the electrochemical process, but also improves electronic conductivity and structural integrity owing to the little lattice mismatch of mesocrystals. As anode materials for sodium ion batteries, the obtained mesocrystal hollow TiO2 spheres exhibited a higher initial coulombic efficiency and sodium storage capacity (143 mA h g−1 at 2 A g−1), better rate performance and cycling stability (110 mA h g−1 after 1000 cycles at 1 A g−1) in an ether-based electrolyte than in an ester-based one, demonstrating a good match between the electrode materials and ether-based electrolyte. Therefore, these findings could open a new gate for rationally preparing new electrode materials for Na-ion batteries in new electrolyte systems.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Bio-derived 3D TiO2 hollow spheres with a mesocrystal nanostructure to achieve improved electrochemical performance of Na-ion batteries in ether-based electrolytes

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Journal of Materials Chemistry A

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