JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Liping Wang,Qingji Wang,Weishang Jia,Shulin Chen,Peng Gao,Jingze Li
Lithium metal with high theoretical capacity (3860 mAh/g) and low operational voltage (−3.04 V vs. standard hydrogen electrode) reflects to be one of the most high energy density anodes for energy storage devices. While, its high chemical activity to continuously react with electrolytes causing low coulombic efficiency and formation of lithium dendrites leading safety concern limits practical applications. To conquer these challenges, amorphous Li 3 PO 4 thin films with thickness of 0–200 nm are directly coated on the surface of Li metal foil via magnetron sputtering . The as-prepared Li 3 PO 4 has almost insulated property with electronic conductivity of 1.4 × 10 −10 S/cm and ionic conductivity of 2.8 × 10 −8 S/cm. The conformal coating layer Li 3 PO 4 can successfully suppress the lithium dendrites growth and improve its life span. The remarkable improvements of the Li 3 PO 4 -coated Li electrodes are mainly attributed to high chemical stability as well as amorphous nature of Li 3 PO 4 , which leads layer-by-layer growth Li film rather than islands form dendrites.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Fanghui Wang,Qian Zhang,Zenghua Liu,Mingxiu Hou,Zhenjiang Li,Jie Liu,Rongfang Wang,Lei Wang
The development of Li-S battery has been seriously hindered by the shuttle effect of polysulfides and the mechanical instability of the sulfur electrode during cycling. Constructing strong-affinity oxide hosts is an effective way to anchor the polysulfides . And then the oxide hosts with sulfur active materials need additional binder to adhere them to the current collector, and they also possess poor ability to suppress the volume change of sulfur cathode. Herein, a bifunctional lithium polysilicate (Li 2 O·nSiO 2 , LSO) as highly efficient adhesion agent and anchoring host has been exploited for long-lifespan Li-S battery. Like other oxide hosts, density functional theory (DFT) calculations reveal that LSO also displays strong chemisorption effect towards polysulfides. Specially, the LSO shows impressive adhesive property and mechanical strength , which make it act as a robust binder to improve the mechanical stability of the sulfur electrode. The sulfur cathode with LSO as the highly efficient adhesion agent and anchoring host can give an excellent cycling stability with ∼ 0.076 % capacity decay per cycle at 0.5C for 500 cycles. This work lights a new way to improve the chemical and mechanical stability of sulfur cathodes.
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DOI
高影响因子
Energy Storage Materials
·
2018
·
IF 0
Long Chen,Li–Zhen Fan
Replacement of solid polymer electrolyte (SPE) to routine liquid electrolyte is highly desirable for high-energy-density lithium sulfur batteries due to its low volatility, high safety and the ability to suppress shuttle effect. Herein, a polymer-in-salt polysiloxane SPE was fabricated with bi-grafted polysiloxane copolymer , lithium bis(trifluoromethanesulfonyl)imide and poly(vinylidene fluoride), which shows higher ionic conductivity (7.8 × 10 -4 S cm -1 at 25 °C). To obtain the satisfactory ionic conductivity and high mechanical property of solid electrolyte simultaneously, cellulose acetate matrix was combined as a rigid substrate to prepare composite polymer electrolyte (CPE) that possesses high ionic conductivity (4.0 × 10 -4 S cm -1 ), enhanced mechanical strength (6.8 MPa), wide electrochemical stability window (4.7 V vs . Li + /Li), and high ion transference number (0.52) at ambient temperature. In addition, the CPE effectively inhibits the growth of lithium dendrites and diffusion of polysulfides . The assembled lithium sulfur battery with CPE exhibits good room-temperature cycling performance at 1C, which indicates that such polymer-in-salt polysiloxane based composite electrolyte membranes can be applied to ambient temperature all-solid-state lithium sulfur batteries .
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DOI
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 15
·9665-9674
·
IF 12.732
Yanke Lin,Ke Liu,Cheng Xiong,Maochun Wu,Tianshou Zhao
Composite solid electrolytes (CSEs) that inherit desirable features from both ceramic and polymer electrolytes are promising to realize all-solid-state Li metal batteries with enhanced energy density and safety. However, conventional CSEs formed by mechanically mixing ceramics and polymers not only suffer from low ionic conductivity but also trigger a non-uniform ion distribution at the interface, resulting in a large internal resistance and severe dendrite growth. To address these two issues simultaneously, here, we develop a novel CSE with an asymmetric dual-layer Li1.3Al0.3Ti1.7(PO4)3 ceramic framework (dual-layer CSE). The vertically-aligned porous layer of the framework provides expressways for Li+ ion conduction, endowing the CSE with a high ionic conductivity of 0.101 mS cm−1 at 25 °C, while the thin dense layer is designed to homogenize the ion distribution at the interface facing the Li anode, allowing uniform Li electrodeposition. As a result, a dendrite-free Li metal anode with stable stripping/plating for over 500 h at 0.4 mA cm−2 is obtained, and the assembled all-solid-state Li/dual-layer CSE/LFP battery achieves a high capacity of 143.5 mA h g−1 at 1C without obvious decay even after 500 cycles. This work offers not only an innovative design but also fundamental insights into novel CSEs with high conductivity and dendrite suppression capability, which paves the way for the development of dendrite-free, long lifespan all-solid-state Li metal batteries.
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Wang Xubei,Gong Lei,Chen Haixia,Qin Zicheng,Hu Chuan,Wang Tao,Hu Feng
Electrocatalytic CO 2 reduction reaction (eCO 2 RR) to formic acid (HCOOH) provides an economical solution for the utilization of renewable electricity and addressing climate challenges. However, the catalytic activity is limited by an inappropriate hydrogenation process and competitive hydrogen (H 2 ) evolution. Herein, we prepared palladium (Pd) nanoparticle-decorated mesoporous Cu 2 Se nanoribbons catalyst (Cu 2 Se-Pd). Pd nanoparticles induce charge transfer from Cu to Se, while promoting the hydrogenation of intermediates and suppressing the evolution of H 2 . Experimental results show that the optimal Cu 2 Se-Pd catalyst achieves a HCOOH Faradaic efficiency (FE) of 61.85% at a potential of − 0.9 V versus reversible hydrogen electrode (vs. RHE) in a flow cell. Cu 2 Se-Pd achieves a HCOOH partial current density of − 129.78 mA cm −2 at − 1.1 V vs. RHE, and operates stably for about 15 h at a constant current of − 100 mA cm −2 . To further couple the eCO 2 RR with energy storage, a Li–CO 2 battery device was assembled using Cu 2 Se-Pd as the cathode material. Battery performance tests show that the Li–CO 2 battery assembled with Cu 2 Se-Pd can stably charge and discharge for over 250 h at a current density of 100 mA g −1 . This work provides experimental insights into promoting eCO 2 RR to HCOOH through hydrogenation regulation.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiadi Liu,Zhiwei Zhao,Liyuan Chen,Chen Guannan,Boqian Zhao,Yuan Lulu,Zhenhua Jiang,Jinhui Pang
Nanofiltration (NF) shows great promise for recovering lithium (Li + ) from brine. Conventional strategies to improve the water flux of nanofiltration membrane usually destroy the stability of nanofiltration membrane. We developed a high-pressure-tolerant NF membrane by engineering an in-situ grown polyaniline (PANI) interlayer on a hydrolyzed poly (aryl ether ketone) (PEEK) substrate. This PANI interlayer, which exhibits excellent compatibility with PEEK, provides a robust platform for the subsequent formation of a polyamide (PA) selective layer via interfacial polymerization, thereby overcoming the inherent difficulty in functionalizing PEEK. The three-layer PEEK/PANI/PA structure ensures that the PANI interlayer protects the PA selective layer from direct interaction with the finger-like pores of the PEEK substrate, thereby preventing its structural collapse under high pressure. This unique configuration ensures structural integrity and enables high water flux. The optimal membrane obtained a high water flux of 118.97 L m −2 h −1 and a Mg 2+ /Li + separation factor of 15.8 at 30 bar. Long-term testing at 50 bar demonstrated stable operation for approximately 18 h, defining the performance limit of this membrane system. This work provides a solution for Mg 2+ /Li + separation nanofiltration membranes with improved water flux and high-pressure tolerance.
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产品关联
DOI
高影响因子
ACS ES&T Water
·
2026
·
IF 4.5
Wencong Wang,Mingming Wang,Xianglei He,Yufeng Yang,Hui Yang,Takeshi Yanagihara
Lithium/aluminum layered double hydroxides (Li/Al-LDHs) have been widely studied for lithium extraction due to their favorable adsorption capacity and outstanding ion selectivity; however, practical applications are limited by the difficulty of SO42– intercalation–induced lithium desorption and structural delamination. In this study, siloxane networks after hydrolysis and polymerization of methyltrimethoxysilane (C4H12O3Si) were employed as cladding layers to cover the surfaces of Li/Al-LDHs, aiming to suppress SO42– intercalation and enhance the structural integrity, thereby mitigating delamination. The resistance effect is positively correlated with the thickness of the cladding layer. The adsorption capacity of the optimal sample after 8 cycles was increased by 50% compared to the pristine Li/Al-LDH. Additionally, its separation coefficients for Li/K, Li/Na, and Li/Mg─specifically 50.82, 50.47, and 149.74─significantly outperformed those of pristine Li/Al-LDH.
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Long Chen,Gen Chen,Zuxin Wen,Dan Wu,Zuoyu Qin,Ning Zhang,Xiaohe Liu,Renzhi Ma
Undesirable dendrite growth and infinite volume expansion are the major barriers to the potential application for next-generation safe Li metal batteries. To solve these problems, we herein report electroplating CuO nanoneedle arrays on Ni foam (NCNF) as 3D porous framework for Li metal batteries. The influence of different morphologies of CuO on guiding Li plating/stripping behavior has been investigated. The homogenous deposition of Li can be attributed to the interspace between the CuO nanoneedles, which is remarkably superior over granular CuO on Ni foam (GCNF) at high areal capacity. The hierarchical skeleton can not only decrease local current inhomogeneity but also alleviate the volume change of Li. The NCNF electrode delivers a higher Coulombic efficiency of Li deposition comparing with the bare Ni foam and GCNF. Furthermore, enhanced cycling stability with small overpotential can be achieved in symmetric cells. In a Li/LiFePO 4 full cell, the excellent cycling performance also proves the superiority of NCNF@Li composite electrode.
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DOI
高影响因子
Small
·
2017
·Vol. 13
·期 34
·1701260
·
IF 8.643
Chao Zhu,Ziqiang Liu,Jian Wang,Jun Pu,Wenlu Wu,Qingwen Zhou,Huigang Zhang
A novel spinel Co 2 VO 4 is studied as the Li-ion battery anode material and it is sandwiched with a 3D ultralight porous current collector (PCC) and amorphous carbon. Co 2 VO 4 demonstrates the high capacity and excellent cyclability because of the mixed lithium storage mechanisms. The 3D composite structure requires no binders and replaces the conventional current collector (Cu foil) with a 3D ultralight porous metal scaffold, yielding the high electrode-based capacity. Such a novel composite anode also enables the close adhesion of Co 2 VO 4 to the PCC scaffold. The resulting monolithic electrode has the rapid electron pathway and stable mechanical properties, which lead to the excellent rate capabilities and cycling properties. At a current density of 1 A g −1 , the PCC and carbon sandwiched Co 2 VO 4 anode is able to deliver a stable reversible capacity of about 706.8 mAh g −1 after 1000 cycles. Generally, this study not only develops a new Co 2 VO 4 anode with high capacity and good cyclability, but also demonstrates an alternative approach to improve the electrochemical properties of high capacity anode materials by using ultralight porous metallic current collector instead of heavy copper foil.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Peng-Yuan Zhai,Shi-Xi Zhao,Hong-Mei Cheng,Jian-Wei Zhao,Ce-Wen Nan
Li 2 MnSiO 4 /C nanocomposites have been successfully prepared by a two-step method to accurately control the formation of the orthorhombic Pmnb phase, and phosphate substitution is used to improve the electrochemical performance of this cathode material . The structure and electrochemical properties are investigated using X-ray diffraction, scanning electron microscope and electrochemical tests. The crystal structure of this material is confirmed to be Pmnb polymorph and the average grain size is about 80–100 nm. The electrochemical tests indicate that Li 2.1 Mn 0.9 [PO 4 ] 0.1 [SiO 4 ] 0.9 /C nanocomposites deliver a discharge specific capacity of 216.9 mAh·g −1 after initial activation and it shows much enhanced electrochemical performance compared with Li 2 MnSiO 4 /C nanocomposites. Furthermore, the XRD patterns , HRTEM images and Raman analysis reveal the crystal structural changes of the two samples during cycling. Thus, this material has shown potential for high power applications in Li-ion batteries.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Bin Li,Mengqing Xu,Benzhen Li,Yanlin Liu,Liang Yang,Weishan Li,Shejun Hu
The physical and chemical properties of the solid electrolyte interphase (SEI) formed by prop-1-ene-1,3-sultone (PES) on graphite anode in propylene carbonate (PC) based electrolyte for lithium ion battery were investigated by charge–discharge test, scanning electron spectroscopy with energy dispersive X-ray spectroscopy (SEM–EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). It is found that the charge–discharge performance of the cell LiCoO 2 /natural graphite (NG) using PC-based electrolyte containing 3 wt% PES is superior to that containing 6 wt% propane sultone (PS), an SEI formation additive that has the similar molecular structure to PES but is reduced not as easily as PES. The results from SEM–EDS, FTIR and XPS show that the structure of graphite has been protected and some S-containing species are proven to be components of the SEI, suggesting that the preferable reduction of PES plays an important role in the formation of a protective SEI on NG.
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Wenfeng Cui,Chao Ma,Xiaofeng Lei,Yang Lv,Qingxu Zhang,Weiye Guan,Xizheng Liu
The instability of the electrolyte and insufficient ionic conductivity are considered the main problems that adversely affect applications of Li-air batteries (LABs) at sub-zero temperatures. In this study, a polymer-confined gel (PCG) electrolyte suitable for low-temperature LABs is developed by confining high donor number dimethyl sulfoxide (DMSO) within an in situ polymerized 4,4′-bis(stearoylamino)diphenyl ether (BSDE) matrix. The strong hydrogen bonds between the BSDE framework and DMSO molecules has destroyed the frozen structure of DMSO, thus the ionic conductivity at lower temperature has thus been improved. Furthermore, a local high-concentration electrolyte is constructed using DMSO as a solvent to dissolve the Li salt. The ionic conductivity of PCG in the fabricated electrolyte at −20 °C is maintained at 0.15 mS cm −1 , which is 5.5 times higher than the corresponding liquid DMSO electrolyte. As a result, the LABs equipped with PCG display a long cycle life of 450 h (−20 °C) and 760 h (25 °C), whereas the LABs with a liquid DMSO electrolyte fail at −20 °C and can only operate for 40 h at 25 °C. This study provides a feasible but facile strategy for the design of gel electrolytes suitable for low-temperature LABs, and this strategy can be extended to other energy-storage systems.
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DOI
高影响因子
危险品化学品经营许可证（带存储）