Article
Chemistry, Physical
Yi Yu, Zuhang Zhan, Peijuan Tang, Qingyu Xu, Qi Fan, Wei Wang, Kai Shen
Summary: A novel structure composed of Co9S8 nanoparticles embedded in a N-doped carbon nanotube hollow polyhedron (Co9S8@NCNHP) is designed to address issues hindering the practical applications of Lithium-sulfur (Li-S) batteries. This rational design improves the electrochemical performance of cathodes and could advance the cathode construction in Li-S batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hao-Jie Li, Yi-Hua Song, Kai Xi, Wei Wang, Sheng Liu, Guo-Ran Li, Xue-Ping Gao
Summary: This study demonstrates that enhancing the adsorption ability for polysulfide anions by introducing sulfur vacancies in a high-sulfur-loading cathode can improve the kinetics of the polysulfide conversion process, leading to high-performance lithium-sulfur batteries. The sulfur vacancies in Co9S8-x/N-G effectively improve the electrode process kinetics for the catalytic conversion of polysulfides, resulting in a high areal capacity and long-term cycling stability. These results suggest that utilizing sulfur vacancies could be an effective approach for achieving high-energy lithium-sulfur batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Multidisciplinary
Dan Zhang, Zhihao Li, Yongfang Li, Peng Zeng, Hongbo Shu, Manfang Chen, Xianyou Wang
Summary: An urchin-like hollow Al-doped alpha-MnO2-x microsphere was prepared by a facile hydrothermal method, which exhibited effective regulation for polysulfides dissolution from Li-S cathode. The Al-doped alpha-MnO2-x/S microspheres showed high initial discharge capacity and favorable cycle stability, making them a promising cathode material for Li-S batteries.
Article
Engineering, Environmental
Qidong Sheng, Hui Liu, Yaning Liu, Bo Jin, Mengyang Cui, Yiyang Li, Nan Gao, Xingyou Lang, Qing Jiang
Summary: In this work, the dual design strategies of using 1 T/2H mixed phase MoSe2 nanosheets growing on nitrogen and sulfur co-doped mesoporous hollow carbon spheres (MoSe2-NSHC) are proposed to inhibit the shuttling effect of lithium polysulfides. The hollow structure of MoSe2-NSHC can load a large amount of sulfur and buffer the volume expansion. Additionally, 1 T/2H-MoSe2 and co-doped nitrogen and sulfur in the carbon skeleton can effectively anchor lithium polysulfides and accelerate their conversion. The lithium-sulfur battery assembled with MoSe2-NSHC/S cathode and MoSe2-NSHC-PP separator shows excellent electrochemical performance and long-term cyclability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Panpan Ding, Tianbao Yan, Kunming Li, Qianqian Wu, Xiaohang Zhu, Huifang Chen, Anqi Ju
Summary: This study successfully addressed the challenges of volume expansion and electrolyte permeation in lithium-sulfur batteries by preparing hollow multichannel carbon fibers. Incorporation of titanium oxide and boron/phosphorus doping effectively improved the adsorption capacity and electronic conductivity of the cathodes, resulting in high specific capacity and excellent cycling performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Yongpeng Li, Da Lei, Tianyi Jiang, Junling Guo, Xiaoyu Deng, Xu Zhang, Ce Hao, Fengxiang Zhang
Summary: Phosphorous-doped Co9S8 nanoparticles embedded in 3D spongy carbon sheets as electrochemical catalyst show improved interaction with LiPS, leading to enhanced cycling stability and areal capacity in lithium sulfur batteries.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Multidisciplinary
Jianli Wang, Wei-Qiang Han
Summary: Lithium sulfur batteries, with high theoretical capacity and energy density, face challenges such as poor conductivity of active sulfur, large volume expansion of cathode, and shuttle effect of lithium polysulfides. Heteroatom doping is proposed to manipulate the electronic structure and improve the performance of sulfur host materials for enhanced cell performance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Biao Wang, Yilun Ren, Yuelei Zhu, Shaowei Chen, Shaozhong Chang, Xiaoya Zhoua, Peng Wanga, Hao Sun, Xiangkang Menga, Shaochun Tanga
Summary: An advanced N-doped carbon microreactor embedded with Co3O4/ZnO heterojunctions is designed as a dual-functional host for optimizing both S cathode and Li metal anode, resulting in excellent cycling stability and high rate capability of Li-S batteries.
Article
Engineering, Environmental
Tiantian Li, Liuping Liang, Zhenyu Chen, Jinliang Zhu, Peikang Shen
Summary: In this study, MXene@CoSe2/NC heterostructured composites were synthesized by embedding CoSe2 nanoparticles onto the surface of N-doped carbon layered MXene hollow spheres. The composites exhibited enhanced electrochemical performance and excellent stability under large areal capacity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Bingbing Huang, Lina Jin, Xinye Qian, Jianyu Chen, Jian Cheng, Yuhe Wang
Summary: In this study, a composite of carbon nanotubes and hollow Co9S8 was applied on the surface of the PE separator for lithium-sulfur batteries (LSBs). The composite material effectively addressed the issues of low sulfur conductance, volume expansion, and shuttle effect, resulting in improved discharge capacity, cycling stability, and safety of the batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Keke Guan, Yingjie Yu, Haipeng Liu, Jin Luo, Wen Lei, Haijun Zhang
Summary: In this study, a tube-in-fiber structure is fabricated by confining carbon nanotubes (CNTs) in Co-doped hollow multi-channel carbon fibers (MCCFs-Co) as a host material for sulfur in lithium sulfur batteries. The composite with hierarchically porous structure and high specific surface area demonstrates excellent electrolyte wettability and rapid Li ion diffusion rate. The addition of CNTs and Co nanoparticles effectively improves the absorption capability and catalytic conversion activity of the composite towards lithium polysulfides, leading to enhanced redox kinetics and alleviated shuttle effect. As a result, the cathode based on MCCFs-Co/CNTs/S exhibits remarkable cycling stability (843 mAh g-1 after 150 cycles at 0.5 C) and outstanding rate capability (698 mAh g-1 after 300 cycles at 2.0 C).
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Rui Sun, Lin Peng, Meixiu Qu, Weiwei Yang, Zhenhua Wang, Yu Bai, Kening Sun
Summary: In this study, sulfur-doped CoP nanoparticles embedded in hollow carbon microspheres (C@S-CoP) were designed and used as modification material for the separator in lithium-sulfur (Li-S) batteries. The introduction of sulfur atoms enhanced chemi-sorption for lithium polysulfides (LiPSs) and improved the conversion kinetics of sulfur species. The hollow porous structure of C@S-CoP facilitated electrolyte penetration and alleviated the expansion of sulfur species during cycling. The experimental results showed that the Li-S battery with C@S-CoP separator exhibited superior rate performance and excellent cyclability.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Shuaibo Zeng, Jing Peng, Xinghua Liang, Xi Wu, Haorong Zheng, Hai Zhong, Tuan Guo, Shihan Luo, Jingyin Hong, Yongyi Li, Qiang Wu, Wei Xu
Summary: In this study, a nitrogen and sulfur dual doped hollow TiO2 sphere was designed and synthesized as a sulfur host. The results showed that this material can significantly improve the electrochemical properties of lithium-sulfur batteries.
Article
Electrochemistry
Lina Jin, Bingbing Huang, Xinye Qian
Summary: The synthesis of hollow Co9S8 coated on commercial separator for lithium-sulfur batteries using a self-template strategy is reported, which can effectively capture and reduce the migration of polysulfides, leading to improved cycling stability and rate performance.
Article
Chemistry, Multidisciplinary
Wei Ying Lieu, Daliang Fang, Yuanjian Li, Xue Liang Li, Congjian Lin, Anupma Thakur, Brian C. Wyatt, Shengnan Sun, Tanmay Ghosh, Babak Anasori, Man-Fai Ng, Hui Ying Yang, Zhi Wei Seh
Summary: Combining MXene nanosheets with CoSe2 nanoparticles can prevent nanosheet aggregation and enhance electrocatalytic effect, leading to improved reaction kinetics and battery performance in lithium-sulfur batteries.
