Small
·
2026
·
IF 11.8
Zhiwei Cheng,Ruili Zhang,Zhuangzhuang Fang,Yang Huang,Deyun Hu,Yanwen Hu,Shan Gao
Lithium-sulfur (Li‑S) batteries are promising as next‑generation high‑energy‑density storage systems, yet their practical application is hindered by the polysulfide shuttle effect and sluggish conversion kinetics. Herein, we report an innovative partial oxygen etching strategy, that achieves semi‑embedding of TiO 2 nanoparticles within the porous carbon channels by partially removing the carbon at a specific temperature (TiO 2 @C‑500). Within this unique architecture, the semi‑embedded TiO 2 nanoparticles offer abundant active sites for polysulfide chemisorption and accelerated sulfur conversion kinetics, while the microporous carbon network functions as both an effective physical barrier against the shuttle effect and a fast electron conduction pathway. Moreover, the coupling interaction of TiO 2 nanoparticles with the carbon layer reinforces structural stability, ensuring durable and efficient catalysis over extended operation. Consequently, Li‑S batteries assembled with the TiO 2 @C‑500 modified separator deliver an initial discharge capacity of 1434 mAh g −1 at 0.1 C and exhibit a low capacity decay rate of 0.049% per cycle during long‑term cycling at 1 C. Furthermore, a high areal capacity of 9.6 mAh cm −2 is achieved even under a demanding sulfur loading of 8.34 mg cm −2 . In summary, this work ingeniously designs a semi‑embedded TiO 2 @C structure, delivers a major breakthrough in Li‑S batteries, thereby establishing a new design paradigm.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Meng Du,Jiakang Shi,Qian Li,Bingyi Yan,Haoyang Xu,Wanchang Feng,Yanfei Zhang,Pengbiao Geng,Songtao Zhang,Mohsen Shakouri,Han-Yi Chen,Huan Pang
Single-atom catalysts (SACs) offer new possibilities to meliorate redox kinetics of lithium‑sulfur (Li-S) batteries due to their superior applicability in terms of atomic-scale reaction mechanisms and structure-activity relationships. However, introducing high entropy into SACs to design atomically dispersed materials with low symmetry and explore its application in Li-S batteries have not attracted widespread attention. Herein, five kinds of SACs and a quinary high-entropy SAC (HESAC) anchored on nitrogen-doped carbon nanocubes were synthesized by a one-step pyrolysis strategy. Electrochemical tests demonstrated that HESAC achieved excellent cycling stability and rate performance, which was mainly due to the synergistic catalytic effect of multi-metal sites in HESAC on lithium polysulfides, as confirmed by in situ ultraviolet visible spectroscopy. In addition, NiSAC revealed the highest catalytic activity among five SACs, indicating that the Ni atoms in HESAC played a leading role in promoting the conversion of lithium polysulfides. Combined with the adsorption ability study, it can be concluded that catalytic ability had a dominant influence on battery performance. This work proves that HESAC can effectively accelerate the sulfur conversion reaction kinetics, thus broadening the application of atomically dispersed catalysts with multiple compositions in Li-S batteries.
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DOI
PubMed
高影响因子
Polymer Chemistry
·
2025
·
IF 3.9
Xu Han,Le Chang,Zeqian Wang,Feng Liu
One-component polysulfide adhesive preparation by diisocyanate-terminated prepolymers and 1,4-butanedithiol (BSO) can provide convenient moisture curing and excellent mechanical properties, but the formation of polysulfide-urea (–NHCOS–) groups causes some reduction in solvent resistance limiting their further application in aircraft fuel tank sealing. Introducing silane side chains into polysulfide adhesive systems is a viable approach to improving the solvent resistance. In this work, a series of novel silane side chain-modified one-component polysulfide adhesives were synthesized by using chain extenders in different proportions of BSO and (3-(2-aminoethyl)aminopropyl)trimethoxysilane (AEAPTMS). The results showed that a moderate amount of silane side chains and restricting the formation of Si–O–Si crosslinked networks can effectively enhance the elongation, interfacial interaction and solvent resistance. The optimal overall performance was obtained when the mass ratio of BSO and AEAPTMS was 7 : 1 (Si-OCPS3). Conversely, the oil and water absorption content after 21 days of Si-OCPS3 were 2.21 ± 0.06% and 2.81 ± 0.31%, being 20.50% and 43.57% lower than before modification (Si-OCPS0), respectively. Moreover, Si-OCPS3 exhibited higher tensile strength of 17.34 ± 0.66 MPa (oil) and 15.67 ± 0.32 MPa (water) than Si-OCPS0. We believe our paradigm can provide a feasible approach for designing high-performance one-component polysulfide adhesives.
研究领域:
材料科学
·
化学工程
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高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-14
·
IF 15.7
Song Wanqing,Wen Zhenzhuang,Wang Xin,Qian Kunyan,Zhang Tao,Wang Haozhi,Ding Jia,Hu Wenbin
Sodium | |sulfur batteries hold great promise for grid-scale energy storage, yet their performance is hindered by the shuttling and sluggish redox of sulfur species. Herein, we report a strategic design of sulfur hosts modified with coordinatively unsaturated iron single-atom (Fe‒N x ) for sodium | |sulfur batteries. Utilizing theoretical calculations, geometric descriptor γ ( l Na‒S / l Fe‒N ) and electronic descriptor φ ( e g / t 2g ) simultaneously correlated with the unsaturation degree of Fe‒N x site are proposed. A negative correlation between γ and the adsorption strength of sodium polysulfides, along with a positive correlation between φ and the decomposition capability of Na 2 S are established. The Fe‒N 1 sites, with the minimum γ and maximum φ values, are identified as the optimal functional species for optimizing polysulfides behaviors. Sodium | |sulfur batteries utilizing Fe‒N 1 /S positive electrodes deliver improved sulfur utilization (81.4% at 167.5 mA g ‒1 ), sustained rate performance (1003.0 mAh g ‒1 at 1675 mA g ‒1 ), and stable cycling (83.5% retention over 450 cycles at 3350 mA g ‒1 ). Moreover, Fe‒N 1 /S positive electrodes enable sodium | |sulfur pouch cells to deliver a sulfur utilization of 77.4% (1296.9 mAh g ‒1 ) at 0.1 A g ‒1 . Our work offers a strategy for designing high-activity, fast redox sulfur positive electrodes and validates the practical potential of sodium | |sulfur batteries.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Qingming Hou,Hongyan Cao,Yu Xia,Yekai Cai,Xinyi Chen,Haiyang Hong,Kenan Xu,Kang Huang,Zhi Xu
The emerging polysulfide/polyiodide redox flow batteries (PSIBs) attract much attention owing to their high capacity and low cost. However, severe polysulfide/polyiodide crossover and insufficient cycle life caused by membrane swelling impede their large-scale applications. Herein, we constructed a rigid framework-constrained membrane, where rigid carbonylated polymer of intrinsic microporosity (cPIM-1) chains were introduced to bind the movement of the flexible perfluorosulfonic acid (PFSA) polymer chain. Quartz crystal microbalance and positron annihilation techniques demonstrated optimizing the PFSA/cPIM (P/cPIM) composite membrane structure and channel size. In the PSIB test, the battery with the P/cPIM membrane operated stably for over 780 h, which significantly improved over the 165 h recorded for the PFSA membrane.
研究领域:
能源材料
·
电化学储能
·
功能膜科学
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产品关联
DOI
PubMed
高影响因子
ENERGY
·
2025
·
IF 9.4
Naomie Beolle Songwe Selabi,Lukang Che,Mengdie Liu,Luozhi Mo,Yingke Zhou,Lesly Dasilva Wandji Djouonkep,Xiaohui Tian
Reducing electrochemical polarization is an efficient strategy to promote electrochemical reaction and increase battery performance. Herein, we develop a magnetic tuning strategy and investigate the influence of the electromagnetic properties of NiCo 2 O 4 on polarization and redox kinetics of Li-S battery. The electromagnetic properties of NiCo 2 O 4 are adjusted by controlling the nanowire dimension and crystalline size, where a series of relationships between electromagnetism and polysulfide conversion reactions are established. The built-in magnetic field in ferromagnetic NiCo 2 O 4 nanowire modulates the surface reactivity and diffusion pathway of negative species at the electrolyte/cathode interface for strong adsorption of LiPSs during cycles. The high dielectric properties of carbon cloth-supported NiCo 2 O 4 nanowire composite (NCO-CC) improve charge carriers/ions mobility and regulate the voltage at the electrolyte/cathode interface, enhancing the electrochemical performance of the battery. The optimized NiCo 2 O 4 -CC-based Li-S battery exhibits excellent initial specific capacity (1496.1 mAh g -1 at 0.1 C), high-rate capability (896.8 mAh g -1 at 1 C), and outstanding cycling stability (a decay of 0.019%/cycle after 1200 cycles at 1 C). A high areal capacity (10.4 mAh cm -2 at 0.1 C) is achieved at high sulfur loading (10.7 mg cm -2 ). This work provides new insights for tuning the magnetic properties of the cathode material to reduce polarization, mitigate polysulfide migration, and enhance the overall electrochemical performance of Li-S batteries.
研究领域:
材料科学
·
电化学
·
能源存储
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DOI
高影响因子
Nano Today
·
2020
·
IF 16.907
Xinyu Shen,Ruonan Ma,Yixin Huang,Lei Chen,Zhuobin Xu,Dandan Li,Xiangqin Meng,Kelong Fan,Juqun Xi,Xiyun Yan,Hyun Koo,Yili Yang,Jing Jiang,Lizeng Gao
Antibacterial nanomaterials provide promising alternative strategies to combat the global challenge of bacterial infection due to deteriorating resistance. However, few have been applied for intracellular bacteria killing or in vivo therapy due to potential cytotoxicity and poor biocompatibility. Here we present a strategy to generate formula suitable for in vivo anti-infective therapy by decocting antibacterial nanomaterial. An aqueous formula containing ferrous iron and polysulfide (Fe(II)S n aq) is prepared by a decoction procedure using nano-iron sulfide (nFeS) as raw substance. Theoretical calculation indicated that replacement of a sulfur atom by an oxygen atom occurred, resulting in polysulfide release and iron dissolution. The Fe(II)S n aq decocted from nFeS induced bacterial death with ferroptosis-like hallmarks, including iron enrichment, lipid peroxidation, and glutathione (GSH) depletion. The antibacterial action of Fe(II)S n aq was dependent on ferrous iron, which could be inhibited by iron chelators, ferroptosis inhibitors, and GSH, while the polysulfide prevented ferrous iron oxidation and counteracted GSH. Furthermore, Fe(II)S n aq not only killed up to 99 % of planktonic bacteria within 5 min, but also suppressed up to 90 % of intracellular Staphylococcus aureus without triggering cytotoxicity to host cell. Administration of Fe(II)S n aq achieved equivalent therapeutic effect to vancomycin for infectious pneumonia treatment and significantly prolonged the survival period of septic mice. These results indicate that aqueous ferrous polysulfide can induce ferroptosis- like death in bacteria and may be formulated as an antibacterial alternative for anti-infection therapy.
研究领域:
纳米技术
·
微生物学
·
药学
·
传染病学
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DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Zongmin Chen,Yaping Xiong,Huazhong Liu,Mouzhi Huang,Xiao Yang,Ze Zhang,Zhenyu Yang,Jianxin Cai
The introduction of suitable catalytic hosts is considered as a suitable way to hinder the “shuttling effect” of lithium polysulfides (LPSs) in lithium–sulfur (Li–S) batteries. At present, most catalytic hosts can accelerate the conversion of LPSs, but there are few reports that catalytic hosts accelerate the conversion of solid-phase discharge products (Li2S2/Li2S) into liquid-phase LPSs. Herein, a heterostructure catalyst with flaky WS2-modified TiO2 hollow spheres (WS2-TiO2) is reported, which accelerates the conversion between liquid-phase LPSs and solid-phase Li2S2/Li2S. A Li–S battery with S@WS2-TiO2 cathode exhibits an initial discharge specific capacity of 1091.7 mAh g–1 at 0.3C, outstanding rate capability of 378.7mAh g–1 at 10C, and low capacity decay of 0.0753% per cycle over 800 cycles at 1C. Therefore, this work provides a suitable way to construct heterosturcture catalytic hosts to realize the commercial application of Li–S batteries.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
·
催化
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DOI
高影响因子
Joule
·
2018
·Vol. 2
·期 10
·2091-2104
·
IF 0
Tianyu Lei,Wei Chen,Weiqiang Lv,Jianwen Huang,Jian Zhu,Junwei Chu,Chaoyi Yan,Chunyang Wu,Yichao Yan,Weidong He,Jie Xiong,Yanrong Li,Chenglin Yan,John B. Goodenough,Xiangfeng Duan
Lithium-sulfur (Li-S) batteries are of considerable interest for high-density energy storage. However, the adoption of Li-S batteries to date has been severely plagued by the polysulfide shuttling effect, whereby polysulfide molecules dissolve into the electrolyte and shuttle across the separator to react with the anode materials, leading to a rapidly fading capacity. Herein, by directly coating a thin layer of reduced graphene oxide (rGO)/sodium lignosulfonate (SL) composite on the standard polypropylene (PP) separator, we produce a rGO@SL/PP separator with abundant negatively charged sulfonic groups in the porous lignin network, which effectively suppress the translocation of the negatively charged polysulfide (PS) ions without compromising the transport of positively charged Li + ions. Using the rGO@SL/PP separator, we demonstrate a highly robust Li-S battery with a capacity retention of 74% over 1,000 cycles. This study defines an effective strategy to inhibit the PS shuttling effect for highly robust Li-S batteries.
研究领域:
储能
·
材料科学
·
电化学
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DOI
Energy Materials
·
2026
·Vol. 6
·期 8
·N
·
IF 11.9
Chao Qin\u003Csup\u003E1,2\u003C\u002Fsup\u003E,Xi Xu\u003Csup\u003E1,2\u003C\u002Fsup\u003E,Zhizhao Xu\u003Csup\u003E3\u003C\u002Fsup\u003E,Chunhui Gao\u003Csup\u003E2\u003C\u002Fsup\u003E,Bo Lu\u003Csup\u003E4\u003C\u002Fsup\u003E,Mei Ding\u003Csup\u003E2\u003C\u002Fsup\u003E,Chuankun Jia\u003Csup\u003E1,2,\u003C\u002Fsup\u003E
Aqueous ferrocyanide-polysulfide redox flow batteries (Fe-S RFBs) are promising for grid-scale energy storage yet suffer from slow polysulfide kinetics, membrane crossover, and supporting-electrolyte mismatch, which increase polarization and undermine cycling durability. Although riboflavin sodium phosphate (FMN-Na) has been used as a homogeneous catalyst to promote polysulfide conversion, previous formulations relied on externally added KOH, creating an OH-/Cl- imbalance and placing greater demands on membrane selectivity. Herein, we construct a KOH-free Fe-S RFB using KCl as the common supporting electrolyte and FMN-Na as a homogeneous molecular catalyst. The system utilizes the alkalinity generated by K2S hydrolysis, removing the need for added KOH while providing a suitable pH environment for FMN-Na electrocatalysis. Whereas earlier work focused on long-chain polysulfide reduction, FMN-Na facilitates polysulfide conversion dominated by the S22-/S2- couple through electron shuttling, reducing polarization and improving reversibility. The optimized Fe-S RFB delivers outstanding cyclability with 5,000 stable cycles at 40 mA cm-2 and a peak power density of 197.2 mW cm-2. With a high-concentration catholyte, the cell yields an initial energy efficiency (EE) of 83.07% and retains 77.34% after 440 cycles. Tailoring the electrolyte compositions extends operation from -20 to 60 °C. Furthermore, Prussian blue-mediated redox targeting and increased active-material concentrations yield a catholyte-volume-normalized discharge energy density of 102.12 Wh L-1, corresponding to 51.06 Wh L-1 when normalized to the combined electrolyte volume. This work provides a practical route towards low-cost Fe-S RFBs combining durable cycling, wide-temperature operation, and high electrolyte-level energy density for grid-scale storage.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 24
·18793-18799
·
IF 9.5
Yilong Lin,Zexian Zhang,Junru Wu,Jiayi Wang,Yuqing Jia,Xiaojin Jin,Feng Liu,Sheng Huang,Yanwu Chen,Yuezhong Meng
To address low stability at the lithium metal anode and lithium polysulfide shuttling is critical for high-energy-density lithium/sulfur (Li/S) pouch cells in practical applications. However, functional electrolytes that are compatible with Li anodes and S cathodes are required to construct more stable interfaces. Herein, we report a highly compatible electrolyte (NBME) containing bis(2-methoxyethoxy)methane (BME) as a single solvent with 1 M lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) and 2% LiNO3 additive. Compared to the traditional DOL/DME blend solvent, better electrochemical performance of 200 cycles in Li/Cu asymmetric cells and over 1200 h of cycling in Li/Li symmetric cells was realized with NBME electrolyte. Improved anode/electrolyte interfacial stability results from the anion-rich solvation sheath, thus forming an inorganic-rich SEI. In addition, the lithium polysulfide (LiPS) shuttle effect could be relieved in NBME electrolyte due to the low solubility of LiPS. Such synergistic effects enable the Li/S pouch cells to achieve 70% capacity retention after 60 cycles.
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高影响因子
ACS Nano
·
2017
·
IF 13.942
Wuxing Hua,Zhi Yang,Huagui Nie,Zhongyu Li,Jizhang Yang,Zeqing Guo,Chunping Ruan,Xi’an Chen,Shaoming Huang
Lithium–sulfur batteries have become an appealing candidate for next-generation energy-storage technologies because of their low cost and high energy density. However, one of their major practical problems is the high solubility of long-chain lithium polysulfides and their infamous shuttle effect, which causes low Coulombic efficiency and sulfur loss. Here, we introduced a concept involving the dithiothreitol (DTT) assisted scission of polysulfides into lithium–sulfur system. Our designed porous carbon nanotube/S cathode coupling with a lightweight graphene/DTT interlayer (PCNTs-S@Gra/DTT) exhibited ultrahigh cycle-ability even at 5 C over 1100 cycles, with a capacity degradation rate of 0.036% per cycle. Additionally, the PCNTs-S@Gra/DTT electrode with a 3.51 mg cm–2 sulfur mass loading delivered a high initial areal capacity of 5.29 mAh cm–2 (1509 mAh g–1) at current density of 0.58 mA cm–2, and the reversible areal capacity of the cell was maintained at 3.45 mAh cm–2 (984 mAh g–1) over 200 cycles at a higher current density of 1.17 mA cm–2. Employing this molecule scission principle offers a promising avenue to achieve high-performance lithium–sulfur batteries.
研究领域:
电化学储能
·
材料科学
·
能源化学
·
纳米材料
·
电池技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）