Search

Your search keyword '"Ma, Xinzhi"' showing total 267 results
Start Over Author "Ma, Xinzhi"
267 results on '"Ma, Xinzhi"'

71. Special NaBH4 hydrolysis achieving multiple-surface-modifications promotes the high-throughput water oxidation of CoN nanowire arrays.

Author

Liu, Sirui, Shi, Yuxin, Xu, Lingling, Zhan, Weican, Chen, Meixi, Pan, Xiaoyue, Yao, Yuqing, Cai, Jiajie, Zhang, Mingyi, and Ma, Xinzhi

Subjects
OXIDATION of water, NANOWIRES, HYDROLYSIS, OXYGEN evolution reactions, OVERPOTENTIAL, CATALYSTS, POTENTIOMETRY
Abstract

Designing an excellent OER catalyst in an alkaline environment is severe yet essential for industrial H2 application under the electrochemical technique. This study has achieved multiple modifications on CoN nanowires, the classic OER catalyst, via a facile room-temperature NaBH4 spontaneous hydrolysis. This facile process simultaneously generates oxygen vacancies and robust BN species. It wraps hydrophilic BOx motifs on the OER response CoN nanowires, producing OER active Co–N–B species, increasing active numbers and guaranteeing structural stability. It suggests that a low NaBH4 concentration (0.1 mol L−1) treatment endows CoNNWAs/CC with excellent OER performance and robust structure, which can drive a current density of 50 mA cm−2 with only 325 mV overpotentials with more than 24 hours' durability. Even, the catalyst can drive 1000 mA cm−2 around 480 mV overpotential. This study allows a novel strategy for designing high-performance OER catalysts. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

72. Rough Ni@MoN corals for the hydrogen evolution reaction in acidic and alkaline media.

Author

Zhang, Yu, Zhang, Baiqing, Liu, Xiangcun, Yin, Zhuoxun, Ma, Xinzhi, Zhou, Yang, Chen, Wei, Li, Jinlong, and Xu, Lingling

Subjects
HYDROGEN evolution reactions, CORALS, CATALYTIC activity, SURFACE morphology, ELECTROCATALYSTS
Abstract

The development of noble-metal-free electrocatalysts with high catalytic efficiency, low cost, and high durability in pH-universal media is encountering a bottleneck in practical applications. In this paper, Ni@MoN-700 coral hybrids were prepared using hydrogen evolution reaction (HER) catalysts, which were synthesized by a high-temperature reduction of NiMoO4 nanorods with urea. It was found that the annealing temperature seriously affects the surface morphology and chemical composition of the catalysts. Besides, structural reorganization occurred during the HER, which involved the joining of pyrrolic N, metal nitrogen, Mo3+, and Mo6+, governing the HER performance. Also, during the HER, Ni and Mo could synergistically improve the overall catalytic activity of the catalysts, via electronic interactions. These advantages endow Ni@MoN-700 with exceptional endurance and great HER activity, with a low overpotential of 30 mV and 76 mV at 10 mA cm−2 in alkaline and acidic media. These characteristics are similar to those of Pt under alkaline conditions. NiMoN catalysts show unusual activity and long-term stability, indicating a wide range of potential applications. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

75. In situ artificial solid electrolyte interface engineering on an anode for prolonging the cycle life of lithium-metal batteries.

Author

Shen, Keke, Wang, Di, Ma, Xinzhi, Zhao, Kaixin, Jin, Qi, Xiao, Junpeng, Cai, Yong, Zhang, Yufei, Wu, Lili, and Zhang, Xitian

Subjects
SOLID electrolytes, SUPERIONIC conductors, ANODES, ELECTROLYTES, ELECTRIC insulators & insulation, ENERGY storage, SUBSTITUTION reactions
Abstract

Lithium, with its high theoretical capacity and low potential, has been widely investigated as the anode in energy storage/conversion devices. However, their commercial applications always suffer from undesired dendrite growth, which forms in the charging process and may puncture the separator, leading to short cycle lives and even security problems. Herein, by an in situ displacement reaction using SnF2 at room temperature, we constructed an artificial solid electrolyte interface (ASEI) of LiF/Li–Sn outside the Li anode. This hybrid strategy can induce a synergy between the high Li+ conductivity of the Li–Sn alloy and good electrical insulation of LiF. Moreover, extreme synergy can be achieved by moderating the thickness of the LiF/Li–Sn ASEI, guiding dendrite-free lithium plating and stripping. As a result, a Li//LiFePO4 battery that is assembled from the LiF/Li–Sn ASEI-engineered Li anode can obtain 1000 cycled lives with 86.3% capacity retention under a charge/discharge rate of 5 C. This work provides an alternative way to construct dendrite-free lithium metal anodes, which significantly benefit the cycle lives of LMBs. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

77. Hybrid-atom-doped NiMoO4 nanotubes for oxygen evolution reaction

Author

Xin Wang, Wei Chen, Ma Xinzhi, Zhuoxun Yin, Jinlong Li, Zhuanfang Zhang, Shu Zhang, and Yang Zhou

Subjects
Nanotube, Chemistry, Doping, Oxygen evolution, General Chemistry, Thermal treatment, Overpotential, Catalysis, Metal, Chemical engineering, visual_art, Materials Chemistry, visual_art.visual_art_medium, Water splitting
Abstract

We fabricated hierarchically porous, hybrid-metal-atom-doped (Co, Fe and Mn) NiMoO4 nanotubes through room-temperature metal atom incorporation and subsequent thermal treatment under an air atmosphere. The incorporation of hybrid metal atoms significantly improved the oxygen evolution reaction (OER) activity of the nanotubes. In general, the Fe-NiMoO4 nanotubes exhibited much better electrocatalytic activity for the OER than single-phase NiMoO4 nanotubes and most other catalysts. To drive a current density of 10 mA cm−2, the Fe-NiMoO4 catalyst only required an overpotential of 217 mV, which is comparable to the integrated performance of commercial IrO2. Furthermore, the Fe-NiMoO4 catalyst showed a stable performance during CV sweeps and long-term tests. The superior activity and long-term stability demonstrate that the hierarchical Fe-NiMoO4 nanotube catalyst has promising potential for applications in large-scale water splitting.

Published
2020

78. Additional file 4 of Repeated turnovers keep sex chromosomes young in willows

Author

Wang, Deyan, Li, Yiling, Li, Mengmeng, Yang, Wenlu, Ma, Xinzhi, Zhang, Lei, Wang, Yubo, Feng, Yanlin, Zhang, Yuanyuan, Zhou, Ran, Sanderson, Brian J., Keefover-Ring, Ken, Yin, Tongming, Smart, Lawrence B., DiFazio, Stephen P., Liu, Jianquan, Olson, Matthew, and Ma, Tao

Abstract

Additional file 4. Uncropped images of agarose gel electrophoresis in Fig. 3C.

Published
2022
Full Text
View/download PDF

80. Additional file 1 of Repeated turnovers keep sex chromosomes young in willows

Author

Wang, Deyan, Li, Yiling, Li, Mengmeng, Yang, Wenlu, Ma, Xinzhi, Zhang, Lei, Wang, Yubo, Feng, Yanlin, Zhang, Yuanyuan, Zhou, Ran, Sanderson, Brian J., Keefover-Ring, Ken, Yin, Tongming, Smart, Lawrence B., DiFazio, Stephen P., Liu, Jianquan, Olson, Matthew, and Ma, Tao

Abstract

Additional file 1: Fig. S1-S11. Supplementary figure legends and supplementary figures.

Published
2022
Full Text
View/download PDF

96. Co3O4 Nanowires Decorated with BOx Species for Electrocatalytic Oxygen Evolution.

Author

Shi, Yuxin, Liu, Sirui, Ouyang, Chen, Xu, Zhikun, Su, Hongxu, Yao, Jing, Zhang, Mingyi, and Ma, Xinzhi

Abstract

One-dimensional nanowires possess significant advantages in active site exposure and electron and matter transport. Their oxygen evolution reaction (OER) performances can be well enhanced by the introduction of oxygen vacancies (Ov) and boron element (B), which, however, have not been achieved simultaneously. Herein, the Ov and BOx motifs were simultaneously employed in typical cobalt spinel oxide nanowires via simple NaBH4 hydrolysis (Co3O4/BOx). When grown on carbon fiber cloth, the observed Co3O4/BOx nanowire array electrode drives a current density of 10 mA cm–2 with only 328 mV overpotential in a 1.0 M KOH solution, which is much superior to the spinel Co3O4. We found that the BOx motifs and Ov have efficiently tuned electronic structures of Co3O4, thereby enhancing the electrical conductivity and generating a large number of electroactive sites. This study provides a simple solution for designing and producing nanostructure OER catalysts with excellent electrochemical performance. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

100. Tailoring the Spatial Distribution and Content of Inorganic Nitrides in Solid–Electrolyte Interphases for the Stable Li Anode in Li–S Batteries.

Author

Jin, Qi, Zhao, Kaixin, Li, Lu, Ma, Xinzhi, Wu, Lili, and Zhang, Xitian

Subjects
LITHIUM sulfur batteries, NITRIDES, ANODES, ENERGY density, LITHIUM-ion batteries
Abstract

Among the alternatives to lithium‐ion batteries, lithium–sulfur (Li–S) batteries are considered as an attractive option because of their high theoretical energy density of 2570 Wh kg−1. However, the application of the Li–S battery has been plagued by the rapid failure of the Li anode due to the Li dendrite growth and severe parasitic reactions between Li and lithium polysulfides. The physicochemical properties of the solid–electrolyte interphase have a profound impact on the performance of the Li anode. Herein, a lithium polyacrylic acid/lithium nitrate (LPL)‐protective layer is developed to inhibit the dendrite Li growth and parasitic reactions by tailoring the spatial distribution and content of LiNxOy and Li3N at the SEI. The modified SEI is thoroughly investigated for compositions, ion transport properties, and Li plating/stripping kinetics. Consequently, the Li–S cell with a high S loading cathode (5.0 mg cm−2), LPL layer‐protected thin Li anode (50 μm), and 40 μL electrolyte shows a long life span of 120 cycles. This work evokes the avenue for regulating the spatial distribution of inorganic nitride at the SEI to suppress the formation of Li dendrites and parasitic reactions in Li–S batteries and perhaps guiding the design of analogous battery systems. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results