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K+-Pre-Intercalated α-K0.2MnTi0.07O0.8 Hollow Nanotubes for High-Performance Na+ Supercapacitors K+-Pre-Intercalated α-K0.2MnTi0.07O0.8 Hollow Nanotubes for High-Performance Na+ Supercapacitors AITranslate

Xian Sun; Jiuwu Wang; Chenguang Huang; Yingying Wang; Xiang Cheng; Yue Situ; Hong Huang
South China University of Technology; South China University of Technology; South China University of Technology; South China University of Technology; South China University of Technology; South China University of Technology; South China University of Technology
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Publisher: ACS
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Abstract AITranslate

Transition metal oxides have attracted extensive research interest for supercapacitors due to efficient ion accessibility of nanostructures. Here, hierarchically hollow α-K0.2MnTi0.07O0.8 nanotubes with high K content are prepared via a self-sacrificial template method. The electrochemical performance of α-K0.2MnTi0.07O0.8 nanotubes is significantly improved when beneficial K+ is intercalated into a considerably ordered α-MnO2 phase with exchangeable Mn–K slabs by a K-pre-reserved reaction. Significantly, the α-K0.2MnTi0.07O0.8 nanotubes activated in a K2SO4 electrolyte exhibit highly capable capacitance behavior with high specific capacitance (334.5 F g–1 at 1 A g–1) and superior cycling stability (88% capacitance retention of the initial after 60,000 cycles). The well-designed α-K0.2MnTi0.07O0.8-based supercapacitor device exhibits an energy density of 25.16 Wh kg–1 at 1600 W kg–1. The morphological electrode-structured designer could be a promising attempt for applications in energy-related fields and even beyond power and storage sources.

KeyWords AITranslate

manganese oxides intercalated K+ electrolyte ions performance supercapacitors
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Basic Information:

DOI：https://doi.org/10.1021/acsaelm.3c00169

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Citation Information:

Transition metal oxides have attracted extensive research interest for supercapacitors due to efficient ion accessibility of nanostructures. Here, hierarchically hollow α-K0.2MnTi0.07O0.8 nanotubes with high K content are prepared via a self-sacrificial template method. The electrochemical performance of α-K0.2MnTi0.07O0.8 nanotubes is significantly improved when beneficial K+ is intercalated into a considerably ordered α-MnO2 phase with exchangeable Mn–K slabs by a K-pre-reserved reaction. Significantly, the α-K0.2MnTi0.07O0.8 nanotubes activated in a K2SO4 electrolyte exhibit highly capable capacitance behavior with high specific capacitance (334.5 F g–1 at 1 A g–1) and superior cycling stability (88% capacitance retention of the initial after 60,000 cycles). The well-designed α-K0.2MnTi0.07O0.8-based supercapacitor device exhibits an energy density of 25.16 Wh kg–1 at 1600 W kg–1. The morphological electrode-structured designer could be a promising attempt for applications in energy-related fields and even beyond power and storage sources.

quote

GB/T 7714-2015 [1] Xian Sun, Jiuwu Wang, Chenguang Huang, et al. ACS Applied Electronic Materials, 2023(5). DOI:10.1021/acsaelm.3c00169.
MLA [1] Xian Sun, et al., ACS Applied Electronic Materials, no. 5, 2023, https://doi.org/10.1021/acsaelm.3c00169.
APA [1] Xian Sun, Jiuwu Wang, Chenguang Huang, Yingying Wang, Xiang Cheng, Yue Situ, & Hong Huang. (2023). ACS Applied Electronic Materials(5). https://doi.org/10.1021/acsaelm.3c00169
IEEE [1] Xian Sun, Jiuwu Wang, Chenguang Huang, Yingying Wang, Xiang Cheng, Yue Situ, and Hong Huang, ACS Applied Electronic Materials, no. 5, 2023, doi: 10.1021/acsaelm.3c00169. keywords: {manganese oxides intercalated K+ electrolyte ions performance supercapacitors}