ACS Nano
·
2025
·
IF 16
Chenzhi Ding,Yao Ding,Kao Wang,Zhaobo Zheng,Fang Liu,Xuyun Guo,Mohsen Tamtaji,Zhengtang Luo
Heterojunction engineering, serving as a key framework for building blocks between diverse functional materials, has emerged as a highly promising strategy to address the demand for efficient catalysts in lithium–sulfur (Li–S) batteries. However, achieving full matrix electronic control in the bulk phase is a bottleneck in regulating the electrochemical catalytic behavior of heterostructure catalysts. Herein, we report a “tube-in-tube” multifunctional catalyst that can strengthen the sulfur redox reaction (SRR) in Li–S batteries. Benefiting from a large-scale and oriented two-dimensional (2D) superlattice interface, the tailored heterostructure catalysts (MoSe2/MoS2@CNTs) show a “1 + 1 > 2” synergistic effect in lithium polysulfide (LiPSs) adsorption and catalytic conversion during SRR. In situ studies and theoretical results reveal that this 2D Moiré superlattice interface not only optimizes the adsorption of polysulfides but also moderates the overall electronic density of catalysts. Consequently, Li–S batteries assembled with MoSe2/MoS2@CNTs-PP as a modified separator deliver an outstanding discharge capacity of 1225 mAh g–1 at 0.2 C with a Ketjenblack/S cathode while maintaining a specific capacity of 870 mAh g–1 even at 5 C. Additionally, due to the inhibited “shuttle effect” by heterostructure catalysts, the modified separators exhibit a less capacity fading of 0.063% per cycle after 1000 cycles (1 C) even with a high sulfur loading (3.8 mg cm–2). This work focuses on designing an adsorption–catalysis synergistic interface within a full matrix of catalysts for Li–S chemistry and providing insights into the design of multifunctional catalysts for energy-storage systems based on the catalytic reaction, e.g., Zn–I2 and metal–air batteries, etc.
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ACS Nano
·
2025
·
IF 16
Yuhao Liu,Feng Wu,Zhengqiang Hu,Li Li,Renjie Chen
Lithium–sulfur (Li–S) batteries hold great promise due to their high theoretical energy density yet are plagued by sluggish redox kinetics and the polysulfide shuttle effect. Here, we present a light-activated solid–liquid dual-phase catalytic system that addresses these challenges by integrating soluble cobalt phthalocyanine (CoPc) molecules into the electrolyte and anchoring CoPc/carbon nanotube (CNT) composites onto the cathode. This dual-phase architecture expands the catalytic region from the electrode surface into the bulk electrolyte, establishing a dynamic and spatially extended catalytic microenvironment. Upon light irradiation, photogenerated carriers trigger a cooperative catalytic process, where liquid-phase CoPc selectively adsorbs polysulfides, while solid-phase CoPc/CNT accelerates lithium sulfide (Li2S) nucleation and growth. This synergistic mechanism significantly enhances the electrochemical performance, enabling ultrastable cycling over 2000 cycles at 8C with a capacity decay of only 0.019% per cycle. Furthermore, excellent performance is maintained under practical conditions with high sulfur loading of 10.53 mg cm–2 and low electrolyte/sulfur ratio of 4 μL mg–1. This study demonstrates a scalable strategy for constructing spatiotemporally regulated catalytic domains, providing insights into the design of advanced photoassisted energy storage systems.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Xinyi Zhong,Jinlin Wang,Litao Han,JinJin Chi,Tong Liu,Dongxing Kou,Wenhui Zhou,Zhengji Zhou,Shengjie Yuan,Yuena Meng,Yafang Qi,Qingbo Meng,Sixin Wu
In addition to open-circuit voltage (V OC ) loss, fill factor (FF) loss is considered another major factor restricting the further optimization of Cu 2 ZnSn(S,Se) 4 (CZTSSe) device efficiency. In this work, a comprehensive investigation into the loss mechanisms of FF has been conducted, and implemented a Li&Ag co-doping approach to enhance FF. The results indicate that the FF loss caused by insufficient carrier extraction is higher than that caused by non-radiative recombination. The carrier extraction capability is significantly influenced by the band alignment of the CdS/CZTSSe interface and has little relationship with the carrier concentration of the absorber. Therefore, although Ag doping reduces the hole concentration and conductivity, it reduces the FF loss caused by carrier extraction due to the improvement of band alignment. Ag doping is also superior to Li in passivating harmful defects, which helps reduce FF losses caused by non-radiative recombination. Correspondingly, Li performs better than Ag in increasing the hole carrier concentration and optimizing band alignment, greatly reducing FF losses caused by insufficient carrier transport. Finally, the Li and Ag co-doping strategy enables a 14.91% efficient kesterite solar cell with the highest reported FF to date of 74.30% through collaborative optimization of carrier extraction and suppression of non-radiative recombination.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 22
·2315010
·
IF 18.5
Bin Zhu,Wei Zhang,Qiyu Wang,Yanqing Lai,Jingqiang Zheng,Naifeng Wen,Zhian Zhang
Li 5 FeO 4 (LFO) is emerging as a promising prelithiation additive due to the high lithium donor capacity (>700 mAh g −1 ), cheap raw materials, good environmental adaptability, and reliable synthesis approach. However, LFO suffers from extremely poor air stability and the underlying mechanism remains elusive. Herein, LFO is subjected to different atmospheres (the main component of air) of O 2 , CO 2 , N 2, and 30% humidity air to unravel its reaction mechanism with air and the interfacial chemistry. It is found that Li + ions will escape from the LFO crystal lattice to construct Li 2 O, Li 2 CO 3, and LiOH impurity phases with an obvious change of LFO surface morphology in contact with O 2 , CO 2, and humidity air. These insulating species remarkedly inhibit Li + ion diffusion from the material and thus lead to an increment of interfacial impedance and an apparent capacity degradation. Consequently, the initial charging capacity decays rapidly from 681.5 to 169.4 mAh g −1 (under O 2 ) and to 54.8 mAh g −1 (under CO 2 ), respectively. In this regard, a facile coating strategy is proposed on the surface of LFO to effectively improve its air stability.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Beibei Lei,Ziyang Hong,Xiaoting Shen,Shanzhu Jiang,Miao Wang
The safety of Li-ion batteries urgently needs to be improved due to the rapid expansion of electric vehicles. Herein, a honeycomb-like hydroxyapatite/sodium alginate/boron nitride (HAP/SA/BN) aerogel has been designed to encapsulate sodium thiosulfate pentahydrate (STP) for thermal regulation and flame retardancy. Benefiting from the aligned and porous aerogel, the SHSB composite possesses the properties of large latent heat, high thermal conductivity, superior shape-stability, mechanical strength and flexibility. Consequently, the continuous charge–discharge of a battery pack under a 40 °C environment can be cooled by 15.9 °C with an ultra-stable coulombic efficiency of 100%. When the battery temperature is rapidly increased, causing thermal runaway, the fire can be extinguished through cooling based on the thermal-chemical reaction of the hydrated salt, the strong scaffold effect from the HAP nanorod network, and heat and air isolation via the formation of an impermeable salt layer. The flame retardant works effectively with a small amount of heat release (0.2 kJ g−1), high temperature tolerance (513.5 °C) and long shape-stability (100 s). Hence, the excellent thermal regulation and flame retardancy are potentially two strong defense lines that can substantially boost Li-ion battery safety.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yong Liu,Mingjun Han,Jianye Liu,Yaling Huang,Yisi Liu,Wenzhang Li,Yang Liu,Jie Li
The practical implementation of Li-O 2 batteries remains constrained by three persistent challenges: sluggish oxygen redox kinetics, prohibitive costs of noble metal catalysts, and insufficient activity of non-precious alternatives. Herein, we present a novel ultralow Pt (0.25 wt%) single-atom loading Co 3 O 4 nanoneedle array catalyst (Pt 1 -Co 3 O 4 ) grown on carbon cloth via an ionic substitution strategy. This material functions as an advanced self-supporting cathode for aprotic Li-O 2 batteries. Benefiting from the surface self-reconstruction induced by Pt single-atom occupied the tetrahedral central sites of Co 3 O 4 , the electronic structure of Co 3 O 4 is modified, significantly enhancing the kinetics of both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). As a result, the Pt 1 -Co 3 O 4 cathode demonstrates excellent cycling stability and a remarkably low discharge–charge overpotential of just 0.86 V. Furthermore, the Li-O 2 battery with this cathode exhibits a high discharge-specific capacity (8.20mAh cm −2 ) and long cycling life (220 cycles, >1100 h at 0.1 mA cm −2 ), outperforming all reported Co 3 O 4 -based ORR/OER catalysts, as well as many non-noble metal catalysts, even those with significant noble metal loading. Crucially, the thin-film-like layers of discharge product Li 2 O 2 are uniformly dispersed on the Pt 1 -Co 3 O 4 nanoneedles. This reduces the adsorption energy between LiO 2 /Li 2 O 2 and Pt 1 -Co 3 O 4 compared to Co 3 O 4 , ensuring good structural stability during discharge/charge cycles and facilitating the decomposition of discharge products during recharge, thus reducing overvoltage and enhancing battery efficiency. These findings position Pt 1 -Co 3 O 4 as a promising catalyst for Li-O 2 batteries and open new avenues for the development of oxide-based single-atom catalysis.
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Journal of Central South University
·
2025
·Vol. 31
·期 12
·4437-4448
·
IF 4.4
Huang Shao-zhen,He Pan,Yu Hua-ming,Li Hui-miao,Chen Li-bao
Lithium metal stands out as an exceptionally promising anode material, boasting an extraordinarily high theoretical capacity and impressive energy density. Despite these advantageous characters, the issues of dendrite formation and volume expansion of lithium metal anodes lead to performance decay and safety concerns, significantly impeding their advancement towards widespread commercial viability. Herein, a lithium-rich Li-B-In composite anode with abundant lithophilic sites and outstanding structural stability is reported to address the mentioned challenges. The evenly distributed Li-In alloy in the bulk phase of anodes act as mixed ion/electron conductors and nucleation sites, facilitating accelerated Li ions transport dynamics and suppressing lithium dendrite formation. Additionally, these micron-sized Li-In particles in LiB fibers framework can enhance overall structural integrity and provide sufficient interior space to accommodate the volume changes during cycling. The electrochemical performance of Li-B-In composite anode exhibits long-term cyclability, superior rate performance and high-capacity retention. This work confirms that the synergy between a 3D skeleton and hetero-metallic lithiophilic sites can achieve stable and durable lithium metal anodes, offering innovative insights for the practical deployment of lithium metal batteries.
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Nanomaterials
·
2025
·Vol. 15
·期 15
·1144
·
IF 4.3
Huanming Zhuo,Shuangshuang Zhao,Ruijie Xu,Lu Zhou,Ye Li,Yuehuan Peng,Xuelong Rao,Yuqiang Tao,Xing Ou
Surface microstructure of grains vastly decides the electrochemical performance of nickel-rich oxide cathodes, which can improve their interfacial kinetics and structural stability to realize their further popularization. Herein, taking the representative LiNi0.8Co0.15Al0.05O2(NCA) materials as an example, a surface heterojunction structure construction strategy to enhance the interface characteristics of high-nickel materials by introducing interfacial ZnO sites has been designed (NCA@ZnO). Impressively, this heterointerface creates a strong built-in electric field, which significantly improves electron/Li-ion diffusion kinetics. Concurrently, the ZnO layer acts as an effective physical barrier against electrolyte corrosion, notably suppressing interfacial parasitic reactions and ultimately optimizing the structure stability of NCA@ZnO. Benefiting from synchronous optimization of interface stability and kinetics, NCA@ZnO exhibits advanced cycling performance with the capacity retention of 83.7% after 160 cycles at a superhigh rate of 3 C during 3.0–4.5 V. The prominent electrochemical performance effectively confirms that the surface structure design provides a critical approach toward obtaining high-performance cathode materials with enhanced long-cycling stability.
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CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Fan Li,Xiumin Yang,Zaolong Zhang,He Xiao,Junlian Wang
To address the third-phase formation and high-acidity stripping corrosion of the traditional TBP-FeCl₃ system for Li extraction from high Mg/Li ratio salt-lake brines, this study developed a TBP-MNPK-kerosene-FeCl₃ system using 2-heptanone (MNPK) as a modifier. MNPK eliminated third-phase formation and enabled complete phase separation within 50s. Under optimal conditions (20 vol % kerosene, 40 vol % TBP), Li extraction efficiency reached 85.4 % with a Li/Mg separation factor of 315. After water scrubbing and 3 mol/L HCl stripping, the stripping solution had 5.46 g/L Li (3.12-fold enrichment) and Li/Mg ratio of 11.38. This system provides an efficient, industrial-feasible Li extraction solution.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Minghui Lyu,Qianxi Zhao,Shouye Cui,Qinyang Li,Limei Yu,Zhuowei Li,Xinying Ren,Dan Gao,Junmei Liu
Auricularia cornea var. Li. polysaccharides (ACP), known for their bioactivity and functional properties, were used as raw materials for hydrogel preparation. This study aimed to develop an ACP-incorporated hydrogel and investigate the enhancement effect of ACP on its structural properties and antioxidant activity. The ACP, extracted using ultrasonic-microwave-assisted extraction, which yielded higher polysaccharide content and antioxidant activity than traditional methods, was incorporated into a hydrogel system at varying concentrations. The hydrogels were characterized by field-emission scanning electron microscopy (FE-SEM), particle size analysis, zeta potential, and Fourier-transform infrared spectroscopy (FTIR). The results demonstrated that ACP promoted the formation of a denser, more uniform three-dimensional network. Consequently, the ACP-reinforced hydrogels exhibited significantly enhanced antioxidant activity and improved storage stability. In conclusion, ACP serves as an effective functional modifier, endowing hydrogels with superior microstructure and antioxidant capacity, which highlights its promise for applications in food and biomedical fields.
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高影响因子
POLYMER
·
2025
·
IF 4.5
Xiuling Dong,Xinyi Ge,Wei Chen,Shuangqing Li,Zheng Xing,Qingguo Zhang,Zhong-Xia Wang
The interface problem between Li anode and gel polymer electrolytes (GPEs) hinder the performance improvement and application of Li metal batteries (LMBs). Herein, a GPE showcasing high ionic conductivity (3.91 mS cm −1 ) and elastic modulus (6.04 MPa) as GPE based on poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) was devised by introducing ionic liquids (ILs). The reconfiguration of Li ion solvation environment and the formation of LiF-rich solid electrolyte interface (SEI) protective layer have improved the interface problem. The LMB assembled from an optimized GPE- ET0.25 has stable Li deposition and excellent electrochemical properties , making the Li||LiFePO 4 (LFP) battery attaining an impressive long-cycle capacity retention rate of 96.0 %. This study emphasizes the advantages of IL aligned GPEs design, and the significance of forming stable SEI to improve battery performance, and provides ideas for the design of flexible LMBs with high safety and high performance.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Lingfei Zhou,Mengqian Yang,Junxia Meng,Fangrui Wang,Chaohui Chen,Dehao Fu,Yingxiang Zhong,Tiankai Sun,Wenzhuan Hu,Quanxin Ma
The Li-rich oxides (LRMOs) are considered the most promising cathode materials due to their reversible anionic redox reaction and high reversible capacity. However, the irreversible release of surface oxygen gives rise to a range of issues, including significant first irreversible capacity loss, inferior rate performance, and serious capacity/voltage decay, which hinder their commercial applications. This study employs a nitrogen (N 2 ) assisted roasting technique to effectively construct oxygen vacancies (OVs) in Li 1.2 Mn 0.56 Ni 0.16 Co 0.08 O 2 (LLMO), aiming to mitigate the irreversible release of oxygen and alleviate voltage decay. X-ray photoelectron spectroscopy and electron paramagnetic resonance tests confirmed the successful introduction of OVs into the LLMO material, referred to as N-LLMO, during N 2 heat treatment. When used as a cathode in Li-ion batteries, N-LLMO exhibited a specific capacity of 258.3 mAh g −1 , an excellent capacity retention rate of 90.0 % after 200 cycles at 1.0 C, and a high-rate performance of 150.1 mAh g −1 at 5.0 C. These enhanced electrochemical performances can be attributed to the reduced irreversible release of O 2 through the OVs introduction, which facilitates the Li + diffusion dynamics and inhibits structural collapse during cycling. This study demonstrates that employing OVs strategy may pave the way for improving the overall electrochemical performance of LRMOs.
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