CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Xiaoting Shen,Ziyang Hong,Beibei Lei,Shunli Liao,Jiayu Ma,Miao Wang
The widespread of electrical vehicle means a sophisticated and systematic method is required to improve Li-ion battery safety. As being complementary to thermal regulation and flame retardant, alarming enables to detect potential safety hazard and win enough time to take action. Herein, a gradient thermal management-alarm composite film is designed to improve battery safety. Specifically, a lamellar and porous aerogel composes of montmorillonite nanosheets and aminated carbon nanotubes is fabricated to encapsulate sodium acetate trihydrate as composite film. The leakage-proof film with high latent heat and thermal conductivity suppresses temperature raising by 11.4℃, while dropping of electrical resistance from melted hydrate salt lightens LED for high-temperature alarming with superior sensitivity (1 min/75℃). If thermal runaway happened to generate combustion, thermal-chemical reaction integrates with scaffold and isolation effects to achieve low heat release (7.1 kJ/g) and high burning temperature (525.5℃). Meanwhile, sharp fluctuation of electrical resistance during burning acts as flame alarming with duration up to 1800 s. In summary, the two-gradient thermal management-alarm system based on the SPMA composite film endows two strong defense lines to boost battery safety omni-directionally.
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高影响因子
Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·361
·
IF 38.5
Yan Chenxi,Liu Xing,He Xuanlong,Han Junjie,He Longjun,Tian Na,Wang Yanyi,Li Qiang,Zhao Ning,Zhang Lipeng,Zhang Peixin,Ma Dingtao
In situ electrochemically induced surface oxygen vacancies (OVs) by Li 2 C 4 O 4 decomposition enable dual regulation of cathode electrolyte interphase (CEI) thickness and composition, a novel strategy for tailored CEI engineering in Li ion batteries.
For the first time, 18 O isotope labeling combined with TOF SIMS directly verifies that lattice oxygen of LiCoO 2 (LCO) serves as the predominant oxygen source for Li x PO y F z in CEI, clarifying the long debated LiPF 6 decomposition mechanism at the cathode inte rface.
The OV mediated strategy endows LCO with 71.1% capacity retention after 600 cycles at 1 C (3–4.4 V) (vs. 23.9% for bare LCO) and achieves universal applicability in 4.5 V high voltage systems and NCM811 cathodes, establishing a new design principle for stable high performance cathodes.
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PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 3
·e70630
·
IF 4.2
Hengji He,Dainan Zhang,Youbin Zheng,Shuyang Ma,Kui Liu,Cheng Liu,Qinghui Yang,Huaiwu Zhang
In this study, Li x Ca 1−x W 1−0.75x Te 0.75x O 4 ceramics were synthesised using a non-stoichiometric co-doping strategy (Li/Te = 1:0.75), systematically revealing the synergistic effect of Li and Te. During doping, Li was introduced from the decomposed secondary Li 2 TeO 4 phase, which acted as a liquid-phase sintering aid. Density functional theory calculations confirmed that Te 4+ substitution for W 6+ enhanced the chemical bond strength and effectively passivated oxygen vacancies, promoting densification and improving dielectric properties. However, excessive doping led to the substantial decomposition/volatilisation of the secondary phase, where the volatilisation of Te outweighed its positive substitution effect, thereby degrading both structure and dielectric performance. Following optimisation, the Li 0.04 Ca 0.96 W 0.97 Te 0.03 O 4 ceramic sintered at 910°C exhibited optimal properties: εr = 9.86, Q× f = 89,613, τ f = −38.6 ppm/°C. The material also exhibited favorable dielectric characteristics in the terahertz range (0.2–1.2 THz, ε r : 4.97–6.36, tan δ: 0.009–0.0848), rendering it a potential candidate for dual-band applications in low-temperature co-fired ceramic technology.
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高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Qi Cheng,Tenghui Qiu,Jiashun Liu,Zixuan He,Hua Tian,Lingfeng Shi,Gequn Shu
Photo-assisted lithium‑carbon dioxide battery (Li-CO 2 ) can utilize the charge carriers generated at the cathode by light to reduce the kinetic barriers of carbon dioxide reduction and lithium carbonate decomposition reactions. However, rapid recombination of photogenerated carriers and sluggish interfacial charge transfer still lead to high overpotentials and limited cycle life in photo-assisted Li-CO 2 batteries. Therefore, it is crucial to design highly efficient photocatalysts that can suppress carrier recombination and accelerate interfacial charge transfer for rational optimization. Herein, we adopted the design strategy of metal ion doping and synthesized a Fe-doped ZnS (Zn 1-x Fe x S, denoted as ZFS-x) photocathode by the hydrothermal synthesis method. The doping of iron ions effectively regulates the electronic structure of ZnS, inhibits the recombination of photogenerated carriers, and accelerates the interfacial charge transfer kinetics. The photo-assisted ZFS-x cathode delivers a markedly prolonged cycling lifetime of up to 300 cycles (600 h) at a current density of 0.01 mA cm −2 , substantially exceeding that achieved under dark conditions (144 h). Furthermore, the single-cycle overpotential is significantly reduced from 2.27 V in the dark to 0.49 V under illumination. Morphology studies confirm that appropriate Fe-ion doping significantly enhances the uniformity of the discharge products, which are present as uniformly dispersed nanoscale particles rather than densely packed plate-like or aggregated structures. Moreover, their highly reversible decomposition during charging effectively mitigates pore blockage and interfacial passivation. These results indicate that the incorporation of iron can improve charge separation and regulate the formation and decomposition of Li 2 CO 3 , thereby effectively modulating the ZnS photocathode and ultimately enabling the development of photo-assisted Li-CO 2 batteries with low overpotential and long cycle life.
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高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Ma Xinyu,Yang Fengrui,Song Chenyang,Wei Jun,Jia Shuwei,Wang Zhi
Achieving high permselectivity and strong tolerance is crucial for Mg 2+ /Li + separation membranes in salt lake lithium extraction. This study proposes an innovative strategy to covalently graft nitrogen-functionalized graphene oxide (NGO) onto the polyamide membrane surface. NGO was prepared by modifying GO with PEI. The polyamide membrane was synthesized via interfacial polymerization of PEI and TMC. PEI modification increases GO interlayer spacing to suppress aggregation, while GO rigidity facilitates PEI chain extension to enhance the positive charge density, whereas residual carboxyl groups from NGO provide specific ion transport channels. Simultaneously, covalent reaction ensures NGO uniform and stable grafting and prevents acyl chloride hydrolysis, constructing a robust outer barrier layer. This strategy enhances membrane stability, acid-resistance, and antibacterial properties. Consequently, the membrane flux reaches 62.7 L·m −2 ·h −1 , and the Mg 2+ /Li + separation factor is 43.12. A two-stage separation factor reaches 170.21. This membrane technology holds significant application potential in lithium extraction from salt lakes.
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高影响因子
Nature Communications
·
2026
·
IF 18.1
Kuang Juner,Su Han,Zhu Jiaqi,Zhong Yu,Wang Xiuli,Tu Jiangping
All-solid-state lithium metal batteries offer high energy density and enhanced safety, yet mechanical instability at both positive electrode/solid electrolyte and Li metal/solid electrolyte interfaces severely limits cycling stability and rate performance, particularly at a low stacking pressure. Here, we report a facile, industry-compatible strategy to refine polycrystalline Li 5.5 PS 4.5 Cl 1.5 grains using Al 4 C 3 abrasives. The resulting Al 4 C 3 -engineered Li 5.5 PS 4.5 Cl 1.5 exhibits reduced average particle size and a narrowed size distribution. The refined electrolyte grains enable a high relative density in both anolytes and composite positive electrodes. Beyond particle refinement, Al 4 C 3 in the anolyte stabilizes the Li/electrolyte interface through its high modulus, low electronic conductivity, and favorable interfacial mechanics, enabling a high critical current density/capacity of 3.2 mA cm ‒2 /3.2 mAh cm −2 . Leveraging our designed electrolyte as both anolyte and catholyte, the all-solid-state lithium metal batteries demonstrate stable cycling performance under a low stack pressure of 4 MPa and a positive electrode loading of 1.4 mAh cm −2 , sustaining over 1500 cycles at 1.4 mA cm ‒2 . This study provides a potentially simple and scalable approach to optimize solid electrolyte particles and interfacial mechanics.
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高影响因子
DESALINATION
·
2026
·
IF 9.8
Rui Gao,Hui Shi,Zhiwei Qiu,Ruobin Dai,Xubiao Luo,Zhiwei Wang
With the rapid retirement of lithium-ion batteries (LIBs), efficiently and environmentally friendly recovering Co 2+ and Li + from LIBs acidic leachates is crucial for meeting the demand for strategic metals. Nanofiltration (NF) membranes, featuring the potential of selective separation of ions, has shown remarkable promise in LIBs acidic leachate recycling. In this work, PDA@PEI surface deposition was employed to endow commercial NF membranes with surface charge and pore size regulation. The modified membrane exhibited a Co 2+ /Li + separation factor (SF) of 70.8 in LIBs acidic leachates—far exceeding the intrinsic performance of conventional negatively charged NF membranes (SF = 11.5). DSPM-DE modeling demonstrated that membrane modification intensifies Donnan exclusion by enriching surface positive charge, while simultaneous pore-size reduction reinforces steric screening, synergistically enhancing Co 2+ /Li + selectivity. Notably, the modified membrane achieved permeate quality comparable to that of a conventional two-stage NF process under single-stage operation and reduced energy consumption by 13% at a low operating pressure of 10 bar. Collectively, these findings demonstrate the feasibility of efficient Co 2+ /Li + separation from spent LIBs leachates and highlight its potential to enhance both the resource-recovery efficiency and environmental sustainability of lithium-ion battery recycling.
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高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 17
·期 11
·221117
·
IF 1.5
Wei Xu,Chengyuan Ni,Chengdong Xia,Zhongyu Piao,Wenping Liu
A carbon coated silicon and carbon coated graphite composites ((Si/C)@C) was prepared from silicon nanospheres, citric acid and graphite. Afterwards, (Si/C)@C was added as an additive to graphite to prepare anode material. The structure, morphology and electrochemical properties of the materials were characterized by XRD, SEM, TEM, and constant current charge/discharge tests. The results showed that the anode material consisted of silicon nanoparticles, graphite and carbon, and the silicon particles coated by an amorphous carbon layer. For graphite with different tap density and morphologies, the addition of (Si/C)@C additives can all improve the electrochemical properties of graphite. Among them, the anode material prepared by adding (Si/C)@C to graphite with high tap density and spherical structure has the best electrochemical performance with an initial discharge capacity of 460 mAh/g, a first coulombic efficiency of 89.8%, and a capacity retention of 87% after the 500th cycle.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Lingzhi Zeng,Jianhui Zhu,Yanlong Wang,Chang Ming Li,Jian Jiang
Using economical oxide catalysts into sulfur (S 8 ) cathodes proves an efficient way to address kinetic issues in Li-sulfur batteries (LSBs). However, these catalysts often occupy too much proportion in weight, thus attenuating the cathode gravimetric energy density . Also, they tend to be sulfurized/ deteriorated in electrode fabrication or battery cycling. To overcome above constraints, we herein propose to minimize the catalyst amount in S 8 cathodes with titanium monoxide (TiO) nanoclusters . In such configured cathodes, there are only ∼ 1.47 % of TiO nano catalysts in weight; such oxides with rich (200) facet prove efficient kinetic-boosting properties on Li 2 S n phase conversions. Notably, they exhibit prominent electrochemical stability over all cyclic periods, without evident sulfuration or phase deteriorations. The in-situ Raman monitoring toward LSBs reveals the liquid-to-solid polysulfide transitions can be well accelerated even under lean-catalyst conditions. As evaluated, the cathodes of S 8 infused in lean TiO-involved carbon hosts (S 8 @ L -TiO@CH) show a great specific capacity of 1331 mAh g −1 at 0.2 C, with a high capacity retention ratio of 78.5 % at the end of cycling. This work may guide a research trend to endow S 8 cathodes with elevated viability/durability for practical usage.
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高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Congjie Lv,Jing Yang,Yi Peng,Xiaochuan Duan,Jianmin Ma,Qiuhong Li,Taihong Wang
The effect of niobium (Nb) doping in one-dimensional (1D) nanostructured LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM) cathode has been investigated for this study. Nb-doped NCM nanofibres have been prepared through an electrospinning method followed by controllable sintering process . X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results confirmed that Nb-doping can effectively reduce cation mixing, thus improve the structural stability . In addition, due to the valence compensation balance, Mn 4+ ions are partially reduced to Mn 3+ ions, which can further improve the conductivity and stable cycling performance. Therefore, increased discharge capacities, high first cycle efficiencies and superior cycling and rate behaviors are observed between normal voltage limits for the Nb-doped NCM compositions in electrochemical cells . Specifically, Nb-doped NCM nanofibres achieve a high discharge capacity of 200.4 mAh/g at 0.1 C with a high Coulombic efficiency of 92.3%. Moreover, a high discharge capacity of 118.7 mAh/g even at 5 C with 83.3% capacity retention after 200 cycles is also achieved. Also, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results demonstrate that Nb-doping can mitigate the electrochemical polarization of NCM and improve the lithium ion diffusion coefficient , leading to the improvement of electrochemical performances . It is highly expected that our findings can provide a general approach to improve the electrochemical properties of cathode materials for lithium-ion batteries.
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高影响因子
IONICS
·
2022
·Vol. 28
·期 7
·3217-3222
·
IF 2.961
Du Gang,Zhao Jinguo,Yang Hongwei
Lithium-sulfur batteries with high theoretical energy density have drawn much attention during the past decades, while the shuttle effect of the polysulfide also hinders the practical application. The employment of suitable host materials has been considered as the effective strategy to inhibit the polysulfide migration. In this work, we develop MoO 2 /C composite as sulfur host material to increase the capacity of lithium-sulfur batteries while retaining high capacity after cycles. The MoO 2 /C composite could serves as active sites, effectively adsorbing and catalytically converting polysulfide, thus improving the redox kinetics and reducing shuttle effect. Owing to these merits, the as-prepared MoO 2 /C@S cathodes exhibit high capacity of 1165 mAh g −1 at 0.1 C. Meanwhile, the battery exhibits superior rate capability and stable cycling performance.
研究领域:
储能
·
材料科学
·
电化学
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高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Hongjiao Nie,Chi Xu,Wei Zhou,Baoshan Wu,Xianfeng Li,Tao Liu,Huamin Zhang
Free-standing activated carbon nanofibers (ACNF) were prepared through electrospinning combining with CO2 activation and then used for nonaqueous Li–O2 battery cathodes. As-prepared ACNF based cathode was loosely packed with carbon nanofibers complicatedly overlapped. Owing to some micrometer-sized pores between individual nanofibers, relatively high permeability of O2 across the cathode becomes feasible. Meanwhile, the mesopores introduced by CO2 activation act as additional nucleation sites for Li2O2 formation, leading to an increase in the density of Li2O2 particles along with a size decrease of the individual particles, and therefore, flake-like Li2O2 are preferentially formed. In addition, the free-standing structure of ACNF cathode eliminates the side reactions about PVDF. As a result, the Li–O2 batteries with ACNF cathodes showed increased discharge capacities, reduced overpotentials, and longer cycle life in the case of full discharge and charge operation. This provides a novel pathway for the design of cathodes for Li–O2 battery.
研究领域:
材料科学
·
储能技术
·
纳米技术
·
电化学
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高影响因子
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