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114 results on '"Ding, Feixiang"'

2. Robust 3.7 V-Na$_{2/3}$[Cu$_{1/3}$Mn$_{2/3}$]O$_2$ Cathode for Na-ion Batteries

Author

Rong, Xiaohui, Qi, Xingguo, Zhou, Quan, Kang, Libin, Xiao, Dongdong, Xiao, Ruijuan, Ding, Feixiang, Yang, Yang, Liu, Yuan, Su, Yun, Zhang, Shiguang, He, Lunhua, Lu, Yaxiang, Chen, Liquan, and Hu, Yong-Sheng

Subjects
Condensed Matter - Materials Science
Abstract

Na-ion batteries (NIBs), which are recognized as a next-generation alternative technology for energy storage, still suffer from commercialization constraints due to the lack of low-cost, high-performance cathode materials. Since our first discovery of Cu$^{3+}$/Cu$^{2+}$ electrochemistry in 2014, numerous Cu-substituted/doped materials have been designed for NIBs. However for almost ten years, the potential of Cu$^{3+}$/Cu$^{2+}$ electrochemistry has been grossly underappreciated and normally regarded as a semielectrochemically active redox. Here, we re-synthesized P2-Na$_{2/3}$[Cu$_{1/3}$Mn$_{2/3}$]O$_2$ and reinterpreted it as a high-voltage, cost-efficient, air-stable, long-life, and high-rate cathode material for NIBs, which demonstrates a high operating voltage of 3.7 V and a completely active Cu$^{3+}$/Cu$^{2+}$ redox reaction. The 2.3 Ah cylindrical cells exhibit excellent cycling (93.1% capacity after 2000 cycles), high rate (97.2% capacity at 10C rate), good low-temperature performance (86.6% capacity at -30$^\circ$C), and high safety, based on which, a 56 V-11.5 Ah battery pack for E-bikes is successfully constructed, exhibiting stable cycling (96.5% capacity at the 800th cycle) and a long driving distance (36 km, tester weight 65 kg). This work offers a commercially feasible cathode material for low-cost, high-voltage NIBs, paving the way for advanced NIBs in power and stationary energy storage applications., Comment: 15 pages, 3 figures, 1 table

Published
2023

8. Conversion of Surface Residual Alkali to Solid Electrolyte to Enable Na‐Ion Full Cells with Robust Interfaces

Author

Xu, Weiliang, primary, Dang, Rongbin, additional, Zhou, Lin, additional, Yang, Yang, additional, Lin, Ting, additional, Guo, Qiubo, additional, Xie, Fei, additional, Hu, Zilin, additional, Ding, Feixiang, additional, Liu, Yunpeng, additional, Liu, Yuan, additional, Mao, Huican, additional, Hong, Juan, additional, Zuo, Zhanchun, additional, Wang, Xiaoqi, additional, Yang, Rui, additional, Jin, Xu, additional, Hou, Xueyan, additional, Lu, Yaxiang, additional, Rong, Xiaohui, additional, Xu, Ning, additional, and Hu, Yong‐Sheng, additional

Published
2023
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13. Earth‐Abundant Na‐Mg‐Fe‐Mn‐O Cathode with Reversible Hybrid Anionic and Cationic Redox

Author

Niu, Yaoshen, primary, Hu, Zilin, additional, Zhang, Bo, additional, Xiao, Dongdong, additional, Mao, Huican, additional, Zhou, Lin, additional, Ding, Feixiang, additional, Liu, Yuan, additional, Yang, Yang, additional, Xu, Juping, additional, Yin, Wen, additional, Zhang, Nian, additional, Li, Zhiwei, additional, Yu, Xiqian, additional, Hu, Hao, additional, Lu, Yaxiang, additional, Rong, Xiaohui, additional, Li, Ju, additional, and Hu, Yong‐Sheng, additional

Published
2023
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15. Sufficient Utilization of Mn 2+ /Mn 3+ /Mn 4+ Redox in NASICON Phosphate Cathodes towards High‐Energy Na‐Ions Batteries

Author

Xu, Chunliu, primary, Hua, Weibo, additional, Zhang, Qinghua, additional, Liu, Yuan, additional, Dang, Rongbin, additional, Xiao, Ruijuan, additional, Wang, Jin, additional, Chen, Zhao, additional, Ding, Feixiang, additional, Guo, Xiaodong, additional, Yang, Chao, additional, Yang, Liangrong, additional, Zhao, Junmei, additional, and Hu, Yong‐Sheng, additional

Published
2023
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17. In Situ Plastic-Crystal-Coated Cathode toward High-Performance Na-Ion Batteries

Author

Wang, Haibo, primary, Ding, Feixiang, additional, Wang, Yuqi, additional, Han, Zhen, additional, Dang, Rongbin, additional, Yu, Hao, additional, Yang, Yang, additional, Chen, Zhao, additional, Li, Yuqi, additional, Xie, Fei, additional, Zhang, Shiguang, additional, Zhang, Hongzhou, additional, Song, Dawei, additional, Rong, Xiaohui, additional, Zhang, Lianqi, additional, Xu, Juping, additional, Yin, Wen, additional, Lu, Yaxiang, additional, Xiao, Ruijuan, additional, Su, Dong, additional, Chen, Liquan, additional, and Hu, Yong-Sheng, additional

Published
2023
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19. Sufficient Utilization of Mn2+/Mn3+/Mn4+ Redox in NASICON Phosphate Cathodes towards High‐Energy Na‐Ions Batteries.

Author

Xu, Chunliu, Hua, Weibo, Zhang, Qinghua, Liu, Yuan, Dang, Rongbin, Xiao, Ruijuan, Wang, Jin, Chen, Zhao, Ding, Feixiang, Guo, Xiaodong, Yang, Chao, Yang, Liangrong, Zhao, Junmei, and Hu, Yong‐Sheng

Subjects
SUPERIONIC conductors, CATHODES, ENERGY density, OXIDATION-reduction reaction, PHOSPHATES, ELECTRIC batteries, POLYSULFIDES
Abstract

Na superionic conductor of Na3MnTi(PO4)3 only containing high earth‐abundance elements is regarded as one of the most promising cathodes for the applicable Na‐ion batteries due to its desirable cycling stability and high safety. However, the voltage hysteresis caused by Mn2+ ions resided in Na+ vacancies has led to significant capacity loss associated with Mn reaction centers between 2.5–4.2 V. Herein, the sodium excess strategy based on charge compensation is applied to suppress the undesirable voltage hysteresis, thereby achieving sufficient utilization of the Mn2+/Mn3+ and Mn3+/Mn4+ redox couples. These findings indicate that the sodium excess Na3.5MnTi0.5Ti0.5(PO4)3 cathode with Ti4+ reduction has a lowest Mn2+ occupation on the Na+ vacancies in its initial composition, which can improve the kinetics properties, finally contributing to a suppressed voltage hysteresis. Based on these findings, it is further applied the sodium excess route on a Mn‐richer phosphate cathode, which enables the suppressed voltage hysteresis and more reversible capacity. Consequently, this developed Na3.6Mn1.15Ti0.85(PO4)3 cathode achieved a high energy density over 380 Wh kg−1 (based on active substance mass of cathode) in full‐cell configurations, which is not only superior to most of the phosphate cathodes, but also delivers more application potential than the typical oxides cathodes for Na‐ion batteries. [ABSTRACT FROM AUTHOR]

Published
2023
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32. Rational design of layered oxide materials for sodium-ion batteries

Author

Zhao, Chenglong (author), Wang, Qidi (author), Yao, Zhenpeng (author), Wang, Jianlin (author), Sánchez-Lengeling, Benjamín (author), Ding, Feixiang (author), Qi, Xingguo (author), Lu, Yaxiang (author), Wagemaker, M. (author), Zhao, Chenglong (author), Wang, Qidi (author), Yao, Zhenpeng (author), Wang, Jianlin (author), Sánchez-Lengeling, Benjamín (author), Ding, Feixiang (author), Qi, Xingguo (author), Lu, Yaxiang (author), and Wagemaker, M. (author)

Abstract

Sodium-ion batteries have captured widespread attention for grid-scale energy storage owing to the natural abundance of sodium. The performance of such batteries is limited by available electrode materials, especially for sodium-ion layered oxides, motivating the exploration of high compositional diversity. How the composition determines the structural chemistry is decisive for the electrochemical performance but very challenging to predict, especially for complex compositions. We introduce the "cationic potential" that captures the key interactions of layered materials and makes it possible to predict the stacking structures. This is demonstrated through the rational design and preparation of layered electrode materials with improved performance. As the stacking structure determines the functional properties, this methodology offers a solution toward the design of alkali metal layered oxides., Accepted Author Manuscript, RST/Storage of Electrochemical Energy

Published
2020
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34. Rational design of layered oxide materials for sodium-ion batteries

Author

Zhao, Chenglong, primary, Wang, Qidi, additional, Yao, Zhenpeng, additional, Wang, Jianlin, additional, Sánchez-Lengeling, Benjamín, additional, Ding, Feixiang, additional, Qi, Xingguo, additional, Lu, Yaxiang, additional, Bai, Xuedong, additional, Li, Baohua, additional, Li, Hong, additional, Aspuru-Guzik, Alán, additional, Huang, Xuejie, additional, Delmas, Claude, additional, Wagemaker, Marnix, additional, Chen, Liquan, additional, and Hu, Yong-Sheng, additional

Published
2020
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35. A Novel Ni-rich O3-Na[Ni0.60Fe0.25Mn0.15]O2 Cathode for Na-ion Batteries

Author

Ding, Feixiang, primary, Zhao, Chenglong, additional, Zhou, Dong, additional, Meng, Qingshi, additional, Xiao, Dongdong, additional, Zhang, Qiangqiang, additional, Niu, Yaoshen, additional, Li, Yuqi, additional, Rong, Xiaohui, additional, Lu, Yaxiang, additional, Chen, Liquan, additional, and Hu, Yong-Sheng, additional

Published
2020
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42. Unveiling the role of hydrothermal carbon dots as anodes in sodium-ion batteries with ultrahigh initial coulombic efficiency

Author

Xie, Fei, primary, Xu, Zhen, additional, Jensen, Anders C. S., additional, Ding, Feixiang, additional, Au, Heather, additional, Feng, Jingyu, additional, Luo, Hui, additional, Qiao, Mo, additional, Guo, Zhenyu, additional, Lu, Yaxiang, additional, Drew, Alan J., additional, Hu, Yong-Sheng, additional, and Titirici, Maria-Magdalena, additional

Published
2019
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43. O3-NaFe(1/3–x)Ni1/3Mn1/3AlxO2Cathodes with Improved Air Stability for Na-Ion Batteries

Author

Li, Xiaowei, Shen, Xing, Zhao, Junmei, Yang, Yang, Zhang, Qiangqiang, Ding, Feixiang, Han, Miao, Xu, Chunliu, Yang, Chao, Liu, Huizhou, and Hu, Yong-Sheng

Abstract

Na-ion batteries (NIBs) have been considered as potential candidates for large-scale energy storage, where O3-type Na-based layered oxide cathodes have attracted great attention due to their high capacity and low cost. However, O3-NaxTMO2materials still suffer from insufficient air stability, which could lead to deteriorative electrochemical properties and thus hinder their practical application. In this work, a series of Al-doped O3-NaFe(1/3–x)Ni1/3Mn1/3AlxO2cathodes prepared by a co-precipitation method were investigated to enhance their electrochemical performance and air stability through stabilizing their structural and interface chemical properties. The Al-doped O3-NaFe(1/3–0.01)Ni1/3Mn1/3Al0.01O2(NFNMA0.01) cathode delivers a comparable capacity of 138 mAh g–1and keeps a capacity retention of 85.88% after 50 cycles at 0.2 C, while the undoped O3-NaFe1/3Ni1/3Mn1/3O2(NFNM) can only keep a capacity retention of 71.02%, although with an initial capacity of 141 mAh g–1at 0.2 C. For the air stability, the capacity decay rates are 58.87 and 5.07% for the undoped NFNM and Al-doped NFNMA0.01after the air exposure for 30 days, respectively. The greatly decaying electrochemical performance could be due to the formation of carbonates during air exposure, which can be efficiently suppressed by Al doping. The doped Al3+has been confirmed to be inserted into the NFNM crystal lattice, inducing the reduced values of lattice parameters aand cdue to the smaller ionic radius of Al3+(53.5 pm) vs Fe3+(55.0 pm). This study demonstrates that Al doping plays an important role in the air stability and cycling stability for layered cathode materials, which offers an efficient strategy to optimize the material design for their practical application in NIBs.

Published
2021
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44. High‐Entropy Layered Oxide Cathodes for Sodium‐Ion Batteries.

Author

Zhao, Chenglong, Ding, Feixiang, Lu, Yaxiang, Chen, Liquan, and Hu, Yong‐Sheng

Subjects
*SODIUM ions, *CATHODES, *ELECTRIC batteries, *OXIDES, *CHEMISTRY, *MATERIALS
Abstract

Material innovation on high‐performance Na‐ion cathodes and the corresponding understanding of structural chemistry still remain a challenge. Herein, we report a new concept of high‐entropy strategy to design layered oxide cathodes for Na‐ion batteries. An example of layered O3‐type NaNi0.12Cu0.12Mg0.12Fe0.15Co0.15Mn0.1Ti0.1Sn0.1Sb0.04O2 has been demonstrated, which exhibits the longer cycling stability (ca. 83 % of capacity retention after 500 cycles) and the outstanding rate capability (ca. 80 % of capacity retention at the rate of 5.0 C). A highly reversible phase‐transition behavior between O3 and P3 structures occurs during the charge‐discharge process, and importantly, this behavior is delayed with more than 60 % of the total capacity being stored in O3‐type region. Possible mechanism can be attributed to the multiple transition‐metal components in this high‐entropy material which can accommodate the changes of local interactions during Na+ (de)intercalation. This strategy opens new insights into the development of advanced cathode materials. [ABSTRACT FROM AUTHOR]

Published
2020
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49. Surface Heterostructure Induced by PrPO4Modification in Li1.2[Mn0.54Ni0.13Co0.13]O2Cathode Material for High-Performance Lithium-Ion Batteries with Mitigating Voltage Decay

Author

Ding, Feixiang, Li, Jianling, Deng, Fuhai, Xu, Guofeng, Liu, Yanying, Yang, Kai, and Kang, Feiyu

Abstract

Lithium-rich layered oxides (LLOs) have been attractive cathode materials for lithium-ion batteries because of their high reversible capacity. However, they suffer from low initial Coulombic efficiency and capacity/voltage decay upon cycling. Herein, facile surface modification of Li1.2Mn0.54Ni0.13Co0.13O2cathode material is designed to overcome these defects by the protective effect of a surface heterostructure composed of an induced spinel layer and a PrPO4modification layer. As anticipated, a sample modified with 3 wt % PrPO4(PrP3) shows an enhanced initial Coulombic efficiency of 90% compared to 81.8% for the pristine one, more excellent cycling stability with a capacity retention of 89.3% after 100 cycles compared to only 71.7% for the pristine one, and less average discharge voltage fading from 0.6353 to 0.2881 V. These results can be attributed to the fact that the modification nanolayers have moved amounts of oxygen and lithium from the lattice in the bulk crystal structure, leading to a chemical activation of the Li2MnO3component previously and forming a spinel interphase with a 3D fast Li+diffusion channel and stable structure. Moreover, the elaborate surface heterostructure on a lithium-rich cathode material can effectively curb the undesired side reactions with the electrolyte and may also extend to other layered oxides to improve their cycling stability at high voltage.

Published
2024
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50. Effect of Nb5+ charge neutralization substitution on the electrochemical performance of lithium-rich layered oxides.

Author

Yang, Kai, Ding, Feixiang, Liu, Yanying, Niu, Bangbang, and Li, Jianling

Abstract

The effect of the Nb5+ substitution with a charge-compensated strategy in lithium-rich layered oxides (LLOs) Li1.2Ni0.13+xCo0.13-xMn0.54-xNbxO2 (x = 0, 0.01, 0.02, and 0.03) has been investigated systematically. A hydroxide co-precipitation method followed by a high-temperature solid-state reaction is adopted in the synthesis process. Structural characterization confirms that the low dose substituting of Nb5+ in the layered structures forms a solid solution, and the samples show low cation mixing and enlarged Li+-diffusing channels, which imply favorable high-rate capability. The initial charge/discharge measurements suggest that the oxygen loss from the network during the delithiation process has been suppressed by the substitution of Nb5+ due to the formation of robust Nb-O bonds and a decrease in TM-O (TMs are transition metals) covalence. Moreover, these Nb-O bonds contribute to the stabilization of the crystalline framework, resulting in an excellent cycle stability with a mitigated voltage decay. [ABSTRACT FROM AUTHOR]

Published
2018
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