Search

Your search keyword '"Jin, Zhaoqing"' showing total 160 results
Start Over Author "Jin, Zhaoqing"
160 results on '"Jin, Zhaoqing"'

12. Coordination Engineering Based on Graphitic Carbon Nitrides for Long‐Life and High‐Capacity Lithium‐Sulfur Batteries.

Author

Sun, Wenhao, Xu, Lingyong, Song, Zihao, Lin, Hai, Jin, Zhaoqing, Wang, Weikun, Wang, Anbang, and Huang, Yaqin

Subjects
LITHIUM sulfur batteries, NITRIDES, DENDRITIC crystals, ENGINEERING, CARBON, ENERGY density, CHEMICAL kinetics
Abstract

Lithium‐sulfur (Li‐S) batteries have received tremendous academic and industrial attentions owing to their ultrahigh energy density. However, technical challenges including lithium dendrite formation, polysulfide shuttling and sluggish sulfur reaction kinetics limit their cycle life, rate capability and areal capacity, especially at practically high sulfur loadings. Here, coordination‐engineered graphite carbon nitrides is proposed to effectively address these challenges. On the anode a layer of novel N‐rich graphitic carbon nitride (g‐C3N5) is applied, in which tricoordinated N atoms display strong affinity to Li+, to guide lithium deposition and efficiently inhibit dendrite formation. Besides, a layer of defective g‐C3N5 carrying highly active bicoordinated N vacancies and cyano N atoms is applied on the cathode, which significantly adsorb polysulfides and catalyze the reversible conversion, as well as the nucleation and dissolution of Li2S thereby outcompeting polysulfide shuttling and raising kinetics at high sulfur loading. This coordination‐engineering strategy based on g‐C3N5 enables Li‐S batteries exhibiting high stability and low capacity‐fading‐rate (0.03% per cycle) in 400 cycles at the high current rate of 4 C, as well as Li‐S pouch cells showing a high areal capacity of 11.69 mAh cm−2 at a high sulfur loading of 9.02 mg cm−2, demonstrating the feasibility of Li‐S batteries in practical applications. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

20. Revealing the Multifunctional Electrocatalysis of Indium‐Modulated Phthalocyanine for High‐Performance Lithium‐Sulfur Batteries.

Author

Guo, Yang, Jin, Zhaoqing, Lu, Jianhao, Wang, Zilong, Song, Zihao, Wang, Anbang, Wang, Weikun, and Huang, Yaqin

Subjects
LITHIUM sulfur batteries, ELECTROCATALYSIS, CATALYSIS, ELECTRON configuration, ENERGY storage
Abstract

The sluggish kinetics of complicated multiphase conversions and the severe shuttling effect of lithium polysulfides (LiPSs) significantly hinder the applications of Li‐S battery, which is one of the most promising candidates for the next‐generation energy storage system. Herein, a bifunctional electrocatalyst, indium phthalocyanine self‐assembled with carbon nanotubes (InPc@CNT) composite material, is proposed to promote the conversion kinetics of both reduction and oxidation processes, demonstrating a bidirectional catalytic effect on both nucleation and dissolution of Li2S species. The theoretical calculation shows that the unique electronic configuration of InPc@CNT is conducive to trapping soluble polysulfides in the reduction process, as well as the modulation of electron transfer dynamics also endows the dissolution of Li2S in the oxidation reaction, which will accelerate the effectiveness of catalytic conversion and facilitate sulfur utilization. Moreover, the InPc@CNT modified separator displays lower overpotential for polysulfide transformation, alleviating polarization of electrode during cycling. The integrated spectroscopy analysis, HRTEM, and electrochemical study reveal that the InPc@CNT acts as an efficient multifunctional catalytic center to satisfy the requirements of accelerating charging and discharging processes. Therefore, the Li–S battery with InPc@CNT‐modified separator obtains a discharge‐specific capacity of 1415 mAh g−1 at a high rate of 0.5 C. Additionally, the 2 Ah Li–S pouch cells deliver 315 Wh kg−1 and achieved 80% capacity retention after 50 cycles at 0.1 C with a high sulfur loading of 10 mg cm−2. Our study provides a practical method to introduce bifunctional electrocatalysts for boosting the electrochemical properties of Li–S batteries. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

44. In-situconstruction of hybrid artificial SEI with fluorinated siloxane to enable dendrite-free Li metal anodes

Author

Wei, Lei, Jin, Zhaoqing, Lu, Jianhao, Guo, Yang, Wang, Zilong, Cao, Gaoping, Qiu, Jingyi, Wang, Anbang, and Wang, Weikun

Abstract

Lithium (Li) metal anode holds great promise for high-energy-density rechargeable batteries. However, it suffers from the Li dendrites growth and uncontrollable side reactions with electrolyte due to the unstable solid electrolyte interphase (SEI) layer. Herein, we propose a facile strategy for the in-situfabricate of organic-inorganic composite artificial SEI layers on Li surfaces, which consist of organic fluorinated siloxane and inorganic LiF-rich phases. The hybrid artificial SEI endows high mechanical strength (13.1 GPa) and Li+transfer number (0.62). Such robust SEI protective layers can not only guide uniform nucleation and deposition of Li metal by facilitating uniform Li-ion distribution, but also prevent unfavourable side reactions. Accordingly, the protected metallic lithium anode (PMTFPS-Li) anode enables stable Li plating/stripping performance in symmetric cells for more than 300 h at 4 mA ·h/cm2under a high areal capacity of 4 mA/cm2. Moreover, the PMTFPS-Li/S cells could maintain more than 300 stable cycles at 0.5C and the PMTFPS-Li/LFP cells present excellent cycling performance (400 cycles at 1C) and enhanced rate capability (110.4 mA·h/g at 3 C). This work will inspire the design of artificial SEI on Li anodes for advanced Li metal batteries.

Published
2023
Full Text
View/download PDF

49. Sequence and analysis of rice chromosome 4

Author

Feng, Qi, Zhang, Yujun, Hao, Pei, Wang, Shengyue, Fu, Gang, Huang, Yucheng, Li, Ying, Zhu, Jingjie, Liu, Yilei, Hu, Xin, Jia, Peixin, Zhang, Yu, Zhao, Qiang, Ying, Kai, Yu, Shuliang, Tang, Yesheng, Weng, Qijun, Zhang, Lei, Lu, Ying, Mu, Jie, Lu, Yiqi, Zhang, Lei S., Yu, Zhen, Fan, Danlin, Liu, Xiaohui, Lu, Tingting, Li, Can, Wu, Yongrui, Sun, Tongguo, Lei, Haiyan, Hu, Hao, Guan, Jianping, Wu, Mei, Zhang, Runquan, Zhou, Bo, Chen, Zehua, Chen, Ling, Jin, Zhaoqing, Wang, Rong, Yin, Haifeng, Cai, Zhen, Ren, Shuangxi, Lv, Gang, Gu, Wenyi, Zhu, Genfeng, Tu, Yuefeng, Jia, Jia, Zhang, Yi, Chen, Jie, Kang, Hui, Chen, Xiaoyun, Shao, Chunyan, Sun, Yun, Hu, Qiuping, Zhang, Xianglin, Zhang, Wei, Wang, Lijun, Ding, Chunwei, Sheng, Haihui, Gu, Jingli, Chen, Shuting, Ni, Lin, Zhu, Fenghua, Chen, Wei, Lan, Lefu, Lai, Ying, Cheng, Zhukuan, Gu, Minghong, Jiang, Jiming, Li, Jiayang, Hong, Guofan, Xue, Yongbiao, and Han, Bin

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): Qi Feng [1, 2]; Yujun Zhang [1, 2]; Pei Hao [1, 2]; Shengyue Wang [2, 3]; Gang Fu [3]; Yucheng Huang [1]; Ying Li [1]; Jingjie Zhu [1]; Yilei [...]

Published
2002
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results