Advanced Energy Materials
·
2025
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IF 26
Shengzhi Li,Zhuzuan Chen,Jie Chen,Xintao Luo,Xueqing Qiu,Yong Qian
Natural binders play attractive roles in stabilizing lithium–sulfur (Li–S) battery systems due to their polymeric skeleton and abundant functional structures, but the complex extraction and modification hinder the practical use. Here, lignocellulose, the unbleached product of the pulp industry, is directly developed as a robust binder in Li–S batteries. Benefiting from various oxygen-containing functional groups woven strong hydrogen-bonded network framework, robust mechanical stability, lithium polysulfide anchoring capacity, and high-speed Li + transport channel. The Li–S cell battery delivers an initial discharge capacity of 996 mAh·g⁻¹ at a current density of 0.5 C and can stably run 500 cycles. Moreover, an Ah-scale pouch cell is constructed and delivers notable gravimetric and volumetric energy densities of 322 Wh·kg⁻¹ and 432 Wh·L⁻ 1 , respectively. This work expands the application boundaries of bulk lignocellulose pulp in advanced energy storage systems.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2024
·Vol. 35
·期 10
·1-10
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IF 2.8
Niu Shengtao,Xu Zhiqiang,Kang Xiaoya,Zhao Lei,Zou Rong,Liu Wenwu,Ran Fen
The problematic polysulfide shuttle effect, slow redox kinetics of lithium polysulfides conversion, and low conductivity impede the prospects of lithium-sulfur battery applications. To address these issues, a unique rod-like CoSe 2 nanoparticle decorated flake MXene (MXene@CoSe 2 ) emerges as a promising host material for the design of advanced batteries. Here, we use a hydrothermal synthesis strategy to grow CoSe 2 nanorods in situ on the surface of flake MXene. By comparing the electrochemical properties of MXene@CoSe 2 electrodes with Mxene@Co electrodes, it is determined that the MXene@CoSe 2 electrode could adsorb lithium polysulfides more efficiently while accelerating the redox kinetics of lithium polysulfides to suppress the shuttle effect. As a result, the initial specific capacity at Mxene@CoSe 2 cathode could reach 1, 050.6 mAh g −1 at 0.1 C, which reaches 560.8 mAh g −1 after 100 cycles and remains at 492.9 mAh g −1 after 1, 000 cycles at 1 C, with a low average decay rate of 0.302% per cycle.
研究领域:
材料科学
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能源存储
✓ 已验证
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Xiyang Kang,Yutao Dong,Hui Guan,Mohammed A. Al-Tahan,Jianmin Zhang
For the better development of lithium-sulfur (Li-S) batteries, it is necessary to fabricate sulfur hosts with cheap, rapid sulfur reaction dynamic and inhibiting the shuttling effect of lithium polysulfides (LiPSs). Herein, four hollow cubic materials with two kinds of nitrogen-doped carbon derived from Prussian blue analogues (PBA) precursor, Co 9 S 8 /MnS/NC@NC-400, CoS 2 /MnS/NC@NC-500, CoS 1.097 /MnS/NC@NC-600 and CoS 1.097 /MnS/NC@NC-700, are reported when the vulcanization temperatures are regulated at 400 °C, 500 °C, 600 °C and 700 °C, respectively. Among them, Co 9 S 8 /MnS/NC@NC-400, CoS 2 /MnS/NC@NC-500 and CoS 1.097 /MnS/NC@NC-600 have the similar hollow cubic structure, which can physically confine the LiPSs's shuttle, however, the Co vacancies of CoS 1.097 in the CoS 1.097 /MnS/NC@NC-600 can promote the rearrangement of surface electrons, which is beneficial to the diffusion of Li + /e − , improving the electrochemical reaction kinetics. As for the CoS 1.097 /MnS/NC@NC-700 with the same substance but almost collapsed structure, the CoS 1.097 /MnS/NC@NC-600 can accommodate the volume expansion of sulfur conversion. In the four sulfur-host materials, the CoS 1.097 /MnS/NC@NC-600 not only displays the outstanding adsorption ability on LiPSs, but also presents the best electrocatalytic activity in the Li 2 S potentiostatic deposition experiments and active sulfur reduction/oxidation conversion reactions, greatly promoting the electrochemical performances of Li-S batteries. The S@CoS 1.097 /MnS/NC@NC-600 cathode can deliver 1010.2 mA h g −1 at 0.5 C and maintain 651.1 mA h g −1 after 200 cycles. In addition, the in-situ X-ray diffraction ( in-situ XRD) test reveals that the sulfur conversion mechanism is the processes of the α -S 8 → Li 2 S → β -S 8 (first cycle), then β -S 8 ↔ Li 2 S during the subsequent cycles. Based on the fundamental understanding of the design and preparation of Co x S y /MnS/NC@NC hosts with the desired adsorption and catalysis functions, the work can provide new insights and reveal the defect-engineering to develop the advanced Li-S batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Xiyang Kang,Ziqian Jin,Huaiqi Peng,Zihao Cheng,Lijie Liu,Xin Li,Lixia Xie,Jianmin Zhang,Yutao Dong
Lithium-sulfur (Li-S) batteries are currently only in the basic research stage and have not been commercialized, which is mainly affected by the poor conductivity of sulfur/lithium sulfide (S/Li 2 S), volume expansion effect of sulfur and the shuttle effect of lithium polysulfides (LiPSs). Herein, a three dimensional (3D) carbon nanotubes (CNTs) decorated cubic Co 9 Se 8−x /FeSe 2−y (0 ＜ x ＜ 8, 0 ＜ y ＜ 2) composite (Co 9 Se 8−x /FeSe 2−y @CNTs) is developed, and used as the functionalized mediator on polypropylene (PP) in Li-S batteries. Benefiting from the good electrical conductivity, large number of Se vacancies and the triple block/adsorption/catalytic effects of Co 9 Se 8−x /FeSe 2−y @CNTs, the cell with Co 9 Se 8−x /FeSe 2−y @CNTs//PP modified separator delivers a high reversible capacity (1103.5 mA h g −1 ) at 1C after three cycles activation at 0.5C and remains 446 mA g h −1 after 750 cycles with a 0.08% capacity decay rate each cycle. Moreover, at 0.2C, a high areal capacity of 3.63 mA h cm −2 after 100 cycles with a high sulfur loading of 4.1 mg cm −2 is obtained. The in-situ XRD tests revealing the transition path of α -S 8 → Li 2 S → β -S 8 during the first charge–discharge process, then β -S 8 → Li 2 S → β -S 8 conversion reaction in the next cycles, and firstly determine the sulfur-selenide active intermediates (Se 1.1 S 6.9 ) during cycles. The work provides a new insight into the development of bimetallic selenide composites by defect engineering with highly adsorptive and catalytic properties for Li-S batteries.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 47
·24196-24205
·
IF 6.895
Heng Zhang,Peigen Zhang,Long Pan,Wei He,Qi Qi,Zhuoheng Bao,Li Yang,Wei Zhang,Michel W. Barsoum,ZhengMing Sun
Lithium–sulfur (Li–S) batteries are regarded as potential next-generation energy storage systems due to their high theoretical energy densities. However, the dissolution of lithium polysulfides (LiPSs) upon cycling can result in severe capacity degradation. Achieving high rate capabilities with good cycling stability remains a huge obstacle for the practical implementation of Li–S batteries. Here we developed a novel, multifunctional, hierarchical structure by self-assembling core–shell MnO2 nanorods @ hollow porous carbon with 2D Ti3C2Tx nanosheets, labelled as MCT, as an efficient polysulfide mediator for Li–S cathodes. The integration of the polar MnO2 core and hollow porous carbon shell captures LiPSs two ways: physical confinement and chemisorption. The conductive Ti3C2Tx nanosheets construct a continuous and conductive network, which not only promotes charge transfer and ion diffusion but also boosts LiPS adsorption and conversion. Based on these merits, the MCT/S cathode delivers good rate capability (688 mA h g−1 at 2.0C) and outstanding long-term cyclability (0.044% capacity decay per cycle over 600 cycles at 2.0C).
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemSusChem
·
2021
·Vol. 14
·期 7
·1710-1719
·
IF 8.928
Liwei Shi,Hailiang Fang,Xiaoxia Yang,Jie Xue,Caifeng Li,Shifeng Hou,Cheng Hu
Graphical Doping for batteries : Fe-doped NiSe 2 nanosheets grown on activated carbon cloth substrates provide elevated performance as Li−S free-standing cathodes. Fe-doping in NiSe 2 enables improved charge transfer and stronger interactions with the adsorbed sulfur species, as well as higher electrical conductivity. The transformation of Li 2 S 2 /Li 2 S growth from conventional 2D films to 3D particles eliminates the barriers of phase transitions during the cathode redox processes. The commercialization of Li−S batteries is hindered by the shuttling of lithium polysulfides (LiPSs), the sluggish sulfur redox kinetics as well as the low sulfur utilization during charge/discharge processes. Herein, a free-standing cathode material was developed, based on Fe-doped NiSe 2 nanosheets grown on activated carbon cloth substrates (Fe-NiSe 2 /ACC) for high-performance Li−S batteries. Fe-doping in NiSe 2 plays a key role in the electronic structure modulation of NiSe 2 , enabling improved charge transfer with the adsorbed LiPSs molecules, stronger interactions with the active sulfur species and higher electrical conductivity. Effective promotion of the sulfur redox kinetics and enhanced sulfur utilization were achieved under high areal sulfur loadings. The stronger interactions with LiPSs together with the unique 3D structure of Fe-NiSe 2 /ACC also induced the transformation of Li 2 S 2 /Li 2 S growth from conventional 2D films to 3D particles, significantly eliminating the barriers of solid nucleation and growth during the phase transition of liquid LiPSs to solid Li 2 S 2 /Li 2 S. With a high sulfur loading of 9.9 mg cm −2 , the Fe-NiSe 2 /ACC cathode enabled a high area capacity of 9.14 mAh cm −2 with a low average decay of 0.11 % per cycle over 200 cycles at 0.1 C.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Xiao Sun,Yujiang Sun,Shunjin Yang,Xiaohu Hu,Yifan Yan,Dehang Ren,Haoran Qian,Ligang Wang,Boyang Chong,Yu Jiang,Kemeng Ji,Yongan Yang
Lithium-sulfur batteries (LSBs) are among the most promising systems beyond lithium-ion batteries. For assembling LSBs, compared with the sulfur (S) cathodes, the lithium sulfide (Li 2 S) cathodes are disadvantageous in their incapability of using the melting-impregnation technique due to the high melting-point of Li 2 S. This paper reports a special melting-impregnation method for preparing Li 2 S cathodes, by utilizing the fluidic property of dimethoxyethane-adducted lithium polysulfides (Li 2 S n ) at 110°C. After the tannic-acid etched cobalt-organic-framework ZIF-67 is impregnated with such fluid and further calcined, the obtained h-Li 2 S@C67 materials present a 34% better performance vs. the commercial Li 2 S-derived c-Li 2 S@C67 cathode. Moreover, its capacity can be increased by 10%, when soaked in pyrrolidine and then heated to carbonize pyrrolidine. Major factors for the performance improvement include the catalytic effect of Co atoms on the charging/discharging kinetics between Li 2 S and S, the increased surface area via tannic acid etching, the enhanced conductivity from the ZIF- and pyrrolidine-derived carbon, and the self-catalytic Li 2 S@Li 2 S 2 @Li 2 S 6 double-shell structures derived from the calcined Li 2 S n .
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2021
·
IF 9.676
Zehui Fan,Chen Zhang,Wuxing Hua,Huan Li,Yan Jiao,Jingyi Xia,Chuan-Nan Geng,Rongwei Meng,Yingxin Liu,Quanjun Tang,Ziyang Lu,Tongxin Shang,Guowei Ling,Quan-Hong Yang
Lithium-Sulfur (Li-S) batteries with high theoretical energy density are promising energy storage systems in the next decades, while the lithium polysulfides (LiPSs) shuttling caused by the sluggish sulfur redox reaction severely lowers the practical performance. The use of interlayer between the cathode and separator has been widely investigated to physically or chemically block the LiPSs, while the introduction of catalytic materials is a more effective strategy to accelerate the conversion of LiPSs. MXene with rich surface chemistry has shown its potential for facilitating the catalytic conversion, however, the aggregation of MXene sheets usually leads to the loss of the catalytic active sites. Herein, we report a diatomite/MXene (DE/MX) hybrid material as the bifunctional interlayer for improving the adsorption/conversion of LiPSs in Li-S batteries. The diatomite with porous structure and rich silica-hydroxyl functional groups could trap LiPSs effectively, while prevent the aggregation of MXene. The DE/MX based interlayer showed bifunctions of enhancing the chemical adsorption and promoting the conversion of LiPSs. The Li-S batteries with the DE/MX interlayer delivered an improved cycling stability with a low capacity decay of 0.059% per cycle over 1000 cycles at 1.0 C. Moreover, stable 200 cycles can be realized with a high sulfur loading electrode up to 6.0 mg cm −2 . This work provides an effective strategy to construct bifunctional interlayers for hindering the shuttling of LiPSs and boosting the practical application of Li-S batteries.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 22
·10003-10016
·
IF 4.682
Zeng Min,Wang Mingshan,Zheng Luojia,Gao Weichen,Liu Rui,Pan Jie,Zhang Hongqing,Yang Zhenliang,Li Xing
Lithium-sulfur battery is expected to be the new generation of high-performance electrochemical storage system benefiting from its high energy density and low cost. However, the slow redox kinetics caused by the low conductivity of sulfur and the shuttle effect result from lithium polysulfides (LiPSs) limit its practical utility. In this work, a highly efficient strategy of freestanding carbon cloth supported molybdenum oxide (CC/MoO 3 ) with in situ deposition of Li 2 S 8 as an active matrix is designed. This chemistry enables strong affinity of Li 2 S 8 on CC/MoO 3 electrode, meanwhile, the strong polarity of MoO 3 catalyzes the mutual transformation of LiPSs and inhibits the shuttle of liquid LiPSs. With the above superiorities, the CC/MoO 3 @Li 2 S 8 electrode shows impressive electrochemical performance, with a high initial discharge specific capacity of 1274 mAh g −1 at a rate of 0.1 C with the sulfur loading of 2 mg cm −2 , and a capacity retention rate of 93.1% compared to the initial stable specific capacity. Even with a high sulfur loading of 4 mg cm −2 , it still maintains high electrochemical activity with a high reversible specific capacity of 916 mAh g −1 after 100 cycles at 0.2 C. Those results show that coupling polar metal oxide material with flexible conductive carbon cloth provides a highly efficient catalytic/conductive network to accelerate sulfur utilization and stability. Graphical abstract A highly efficient strategy of freestanding carbon cloth supported molybdenum oxide with in-situ deposition of Li 2 S 8 as active matrix is realized, resulting in a robust Li + storage capacity for lithium-sulfur battery.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Ming Jin,Rui Gao,Guiru Sun,Haibo Li,Xiangxin Xue,Chaoqun Qu,Nan Li,Yuting Zhang,Zhao Wang,Ming Feng
Lithium sulfide (Li 2 S) compounds as cathode materials for Lithium-sulfur (Li-S) battery have attracted more and more attention recently because of its high specific capacity, lower volume expansion and higher thermal stability of Li 2 S. However, high electrochemical barrier of the Li 2 S cathode and “shuttle effect” from S species on anode still block the development of Li-S batteries. Herein, LiFePO 4 (LFP) is employed as dual-function separator modifier to establish hybrid cathode. The modified separator will reduce overpotential for effective and durable sulfur redox reactions at the same time, it can also efficiently immobilize the lithium polysulfides (LiPSs) through the Lewis acid-base interaction of LiPSs and LFP. The battery systems based on the as-developed LFP modified separator exhibit an excellent rate capability, high sulfur utilization and outstanding cycling performance. The capacity retention can reach 83.9% after 400 cycles at 0.2 C, and the capacity can reach 594 mAh g −1 at up to 2 C. Current facile and low-cost strategy to modified Li-S battery systems on one hand offers an effective pathway to enhance electrochemical performance, on the other hand inspire new strategies on reducing the activation barrier of Li 2 S for improved sulfur electrochemistry as well.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Li He,Yingjie Cheng,Qiuju Li,Hainan Zhao,Meiling Wang,Xuejian Shi,Xiaoxin Zou,Yizhan Wang,Yingjin Wei
The shuttling and sluggish conversion kinetics of lithium polysulfides (LPSs) seriously hinder the cycling performance of Li-S batteries. To address this issue, a NbB 2 @CC cathode/separator interlayer is designed by dispersing NbB 2 nanoparticles in a textile carbon cloth (CC). NbB 2 has stronger adsorption ability than CC, which can effectively capture the dissolved LPSs in the electrolyte. Then, under the catalysis of NbB 2 , the reaction kinetics of LPSs is greatly facilitated. Benefiting from these advantages, the Li-S cell can offer a high discharge capacity of 735.2 mA·h·g −1 at 1C, with very small capacity fading in 800 cycles. It also shows excellent low-temperature performance, which can deliver a stable discharge capacity of 802 mA·h·g −1 at −10 °C. Moreover, a high areal capacity of 7.34 mA·h·cm −2 is achieved for the Li-S cell with a high sulfur loading of 9.45 mg·cm −2 and low electrolyte/sulfur ratio of 6.34 µL·mg −1 .
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Ning Wang,Naiqin Zhao,Chunsheng Shi,Enzuo Liu,Chunnian He,Fang He,Liying Ma
Lithium-sulfur (Li-S) batteries have been recognized as one of the promising next-generation energy storage devices owing to their high energy density, low cost and eco-friendliness. As for cathode’s performance, the main challenges for developing highly-efficient and long-life Li-S batteries are to retard the polysulfides diffusion into electrolyte and the reaction with metallic lithium (Li). Especially, the safety issues, derived from metallic Li in anode, must be overcome. Herein, we fabricated lithium sulfide@porous carbon composites (Li 2 S@PC) by an in-situ reaction between the lithium sulfate (Li 2 SO 4 ) and the pyrolytic carbon from glucose. The nanosized Li 2 S particles were uniformly distributed in the carbon matrix, which not only significantly improve electronic conductivity of the electrode but also effectively trap the dissolved polysulfides. Furthermore, on the basis of the graphite’s electrochemical features in ether-based electrolyte, we assembled graphite-Li 2 S@PC full cells using the obtained Li 2 S@PC composites as the cathode, graphite as the anode and the DOL/DME with LiNO 3 additive as the electrolyte. A unique strategy was proposed to activate the full-cells in descending order using constant voltage and current to charge the cut-off voltage. This Li-S full cell exhibits stable cycling performance at 0.5 C over 100 cycles. Because graphite-Li 2 S batteries are suitable to the lithium-ion batteries industry, our preliminary results here will shed a new light on the cell design and industrial production.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）