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25 results on '"Qiao, Zhensong"'

13. Manipulating External Electric Field and Tensile Strain toward High Energy Density Stability in Fast-Charging Li-Rich Cathode Materials

Author

Liu, Pengfei, primary, He, Wei, additional, Cheng, Yong, additional, Wang, Qian, additional, Zhang, Chenying, additional, Xie, Qingshui, additional, Han, Jiangtao, additional, Qiao, Zhensong, additional, Zheng, Hongfei, additional, Liu, Qun, additional, Wang, Laisen, additional, Qu, Baihua, additional, Luo, Qing, additional, Zhu, Zi-Zhong, additional, and Peng, Dong-Liang, additional

Published
2020
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15. 3D lithiophilic–lithiophobic–lithiophilic dual-gradient porous skeleton for highly stable lithium metal anode

Author

Zheng, Hongfei, primary, Zhang, Qingfei, additional, Chen, Qiulin, additional, Xu, Wanjie, additional, Xie, Qingshui, additional, Cai, Yuxin, additional, Ma, Yating, additional, Qiao, Zhensong, additional, Luo, Qing, additional, Lin, Jie, additional, Wang, Laisen, additional, Qu, Baihua, additional, Sa, Baisheng, additional, and Peng, Dong-Liang, additional

Published
2020
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19. Function and Application of Defect Chemistry in High‐Capacity Electrode Materials for Li‐Based Batteries.

Author

Qiao, Zhensong, Lin, Liang, Yan, Xiaolin, Guo, Weibin, Chen, Qiulin, Xie, Qingshui, Han, Xiao, Lin, Jie, Wang, Laisen, and Peng, Dong‐Liang

Subjects
*ELECTRIC batteries, *ELECTRODES, *ENERGY density, *IONIC conductivity, *ZINC electrodes, *IONIC bonds
Abstract

Current commercial Li‐based batteries are approaching their energy density limitation, yet still cannot satisfy the energy density demand of the high‐end devices. Hence, it is critical to developing advanced electrode materials with high specific capacity. However, these electrode materials are facing challenges of severe structural degradation and fast capacity fading. Among various strategies, constructing defects in electrode materials holds great promise in addressing these issues. Herein, we summarize a series of significant defect engineering in the high‐capacity electrode materials for Li‐based batteries. The detailed retrospective on defects specification, function mechanism, and corresponding application achievements on these electrodes are discussed from the view of point, line, planar, volume defects. Defect engineering can not only stabilize the structure and enhance electric/ionic conductivity, but also act as active sites to improve the ionic storage and bonding ability of electrode materials to Li metal. We hope this review can spark more perspectives on evaluating high‐energy‐density Li‐based batteries. [ABSTRACT FROM AUTHOR]

Published
2020
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23. 3D hierarchical MnO2 nanorod/welded Ag-nanowire-network composites for high-performance supercapacitor electrodes.

Author

Qiao, Zhensong, Yang, Xiaopeng, Yang, Shuhua, Zhang, Liqiang, and Cao, Bingqiang

Subjects
*SUPERCAPACITOR electrodes, *NANOWIRE manufacturing, *WELDING electrodes, *TRANSITION metal oxides, *ELECTROPLATING
Abstract

3D MnO2 nanorod/welded Ag-nanowire-network supercapacitor electrodes were prepared. Welding treatment of the Ag nanowire-network leads to low resistance and long lifetime. Galvanostatic charge/discharge (GCD) induces an ever-lasting morphology changing from flower-like to honeycomb-like for MnO2, which manifests as increasing specific capacitance to 663.4 F g−1 after 7000 GCD cycles. [ABSTRACT FROM AUTHOR]

Published
2016
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24. Phosphorus-Doped Metal–Organic Framework-Derived CoS2Nanoboxes with Improved Adsorption-Catalysis Effect for Li–S Batteries

Author

Liu, Jianbin, Qiao, Zhensong, Xie, Qingshui, Peng, Dong-Liang, and Xie, Rong-Jun

Abstract

Lithium–sulfur (Li–S) batteries are regarded as one of the most promising next-generation battery technologies owing to their ultrahigh energy density up to 2600 W h kg–1and low cost. However, major challenges still remain in the application of Li–S batteries, such as shuttle effect and sluggish redox kinetics. Herein, it is demonstrated that phosphorus doping can not only significantly improve the polysulfide adsorption but also enhance the catalysis effects of metal–organic framework-derived CoS2nanoboxes in Li–S batteries. Consequently, a modified separator integrated with P–CoS2and carbon nanotubes effectively suppresses the polysulfide shuttle and propels the redox kinetics of polysulfides, thus promising higher specific discharge capacity, better rate, and stable cycle performance. Even under the high sulfur loading condition (4.8 mg cm–2), the areal discharge capacity of the cell with the functional separator can still remain at 4.5 mA h cm–2after 100 cycles at 0.2 C. More importantly, this work may encourage more effort on anion doping for engineering the polar surface of transition-metal compounds to further mediate the interfacial redox chemistry between transition-metal compounds and polysulfides in Li–S batteries.

Published
2021
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25. Phosphorus-Doped Metal-Organic Framework-Derived CoS 2 Nanoboxes with Improved Adsorption-Catalysis Effect for Li-S Batteries.

Author

Liu J, Qiao Z, Xie Q, Peng DL, and Xie RJ

Abstract

Lithium-sulfur (Li-S) batteries are regarded as one of the most promising next-generation battery technologies owing to their ultrahigh energy density up to 2600 W h kg -1 and low cost. However, major challenges still remain in the application of Li-S batteries, such as shuttle effect and sluggish redox kinetics. Herein, it is demonstrated that phosphorus doping can not only significantly improve the polysulfide adsorption but also enhance the catalysis effects of metal-organic framework-derived CoS 2 nanoboxes in Li-S batteries. Consequently, a modified separator integrated with P-CoS 2 and carbon nanotubes effectively suppresses the polysulfide shuttle and propels the redox kinetics of polysulfides, thus promising higher specific discharge capacity, better rate, and stable cycle performance. Even under the high sulfur loading condition (4.8 mg cm -2 ), the areal discharge capacity of the cell with the functional separator can still remain at 4.5 mA h cm -2 after 100 cycles at 0.2 C. More importantly, this work may encourage more effort on anion doping for engineering the polar surface of transition-metal compounds to further mediate the interfacial redox chemistry between transition-metal compounds and polysulfides in Li-S batteries.

Published
2021
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