Nano Energy
·
2017
·
IF 12.343
Zhe Peng,Ning Zhao,Zhenggang Zhang,Hao Wan,Huan Lin,Meng Liu,Cai Shen,Haiyong He,Xiangxin Guo,Ji-Guang Zhang,Deyu Wang
Although Li metal has been regarded as one of the most promising anode materials , an unstable Li/electrolyte interface during the cycling process seriously limits its practical application in rechargeable batteries. Herein, we report a transplantable LiF-rich layer (TLL) that can suppress the side reactions between electrolyte and lithium metal. This peelable layer cross-linked by nanoscale LiF domains is obtained by electrochemically reducing NiF 2 electrodes and could be used to protect Li metal anodes . Cu-Li cells using the TLL protection can operate for more than 300 cycles with a Coulombic efficiency as high as ~ 98% in carbonate-based electrolytes. In Li-LiFePO 4 cells, lithium metal with a TLL still looks shiny after 1000 cycles (~ 6 months) in contrast to the black surface of bare lithium foil after ~ 500 cycles (~ 3 months). These results clearly demonstrate that the TLL could greatly limit the side reactions between lithium metal and the carbonate-based electrolytes, and may enable long-term stable operation of Li metal batteries .
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DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2014
·Vol. 30
·期 9
·1667-1673
·
IF 0.886
XUE Qing-Rui,LI Jian-Ling,XU Guo-Feng,HOU Peng-Fei,YAN Gang,DAI Yu,WANG Xin-Dong,GAO Fei
A lithium-rich solid-solution layered cathode material, Li[Li0.2Mn0.54Ni0.13Co0.13]O2, was synthesized using a fast co-precipitation method, and surface modified withAg/C via chemical deposition. The electrochemical properties,
structures, and morphologies of the prepared samples were investigated using X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), galvanostatic charge-discharge cycling, cyclic voltammetry (CV), electrochemical impedance
spectra (EIS), and energy dispersive X-ray spectroscopy (EDS). The XRD results showed that the pristine and Ag/Ccoated cathode materials both have hexagonal α-NaFeO2 layered structures with the R3m
space group. Microscopic morphological observations and EDS elemental mapping showed that a uniform Ag/C coating layer of thickness 25 nm was deposited on the surfaces of Li[Li0.2Mn0.54Ni0.13Co0.13]O2 particles. The Ag/C-coated Li[Li0.2Mn0.54Ni0.13Co0.13]O2
material gave an excellent electrochemical performance. The initial discharge capacity (0.05C) of the Ag/C- coated sample was 272.4 mAh ·g-1, with an initial coulombic efficiency of 77.4%, corresponding to 242.6 mAh·g-1 for the pristine sample, with an initial
coulombic efficiency of 67.6%, in the potential range 2.0-4.8 V (vs Li/Li+). After 30 cycles (0.2C), the Ag/C-coated Li[Li0.2Mn0.54Ni0.13Co0.13]O2 retained a capacity of 222.6 mAh·g-1, which was 14.45%
higher than that of Li[Li0.2Mn0.54Ni0.13Co0.13]O2. We also found that the Ag/C coating improved the rate capability of the solid-solution material Li[Li0.2Mn0.54Ni0.13Co0.13]O2. The
capacity retention (1C) of the Ag/C-coated sample was 81.3%, compared with the capacity at 0.05C. CV and EIS results showed that the Ag/C coating layer suppressed the oxygen release in the initial charge progress and lowered the surface film resistance and electrochemical reaction resistance
of the pristine sample.
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高影响因子
RSC Advances
·
2025
·Vol. 15
·期 16
·12528-12537
·
IF 4.6
Junbo Wang,Jie Jiang,Jing Wang,Shouyuan Hu,Jiahao Hu,Yalong Li,Zhiyu Tao,Chengju Wu,Pei Li,Liang Chen
Nanofiltration has emerged as an effective technique for the selective separation of mono- and divalent ions, such as Mg2+/Li+ mixtures, and plays a crucial role in lithium extraction from salt lakes. In this study, a graphene oxide (GO) membrane with positively charged channels was prepared by crosslinking arginine (Arg) onto GO nanosheets, followed by vacuum filtration to form the membrane, and then thermal reduction (Arg-rGO). The Arg-rGO membrane exhibits high performance in the ion separation of a typical brine with a Mg2+/Li+ mass ratio of 20. The separation factor (SLi/Mg) reached up to 45.6—two times the highest separation factor reported—while maintaining an advanced water permeance of 21.3 L m−2 h−1 bar−1. Furthermore, the Mg2+/Li+ mass ratio was reduced from 20 to 0.2 after two-stage crossflow filtration with high flux under high pressure. The observed separation performance can be attributed to the synergistic effect of electrostatic repulsion and size-exclusion. These findings confirmed efficient separation of Mg2+/Li+ using GO membranes, demonstrating potential for practical application in lithium extraction from salt lakes.
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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.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wei Xiang,Lijun Jia,Tingqing Cai,Xuening Han,Mingchao Yang,Huaiwu Zhang
To meet high-power microwave system demands, low-temperature sintered Bi-Li-V substituted YIG ferrites were prepared. The experimental results reveal that Bi 3+ , Li + , and V 5+ occupy the c, a, and d sites of the garnet structure, respectively; the full-site distortion reduces the lattice activation energy, significantly reducing the transformation temperature from perovskite to garnet phase. Additionally, a dual structure with a high percentage of fine grains is observed in the substituted samples, which is an important reason for the large increase in spin-wave linewidth. Isothermal thermodynamic analysis indicates that a sintering mechanism dominated by liquid-phase sintering is conducive to the densification of YIG ferrites. Ferromagnetic resonance linewidth decomposition confirms that, due to the simultaneous increase in the saturation magnetization and the magneto-crystalline anisotropy constant, anisotropy-induced linewidth remains almost unchanged; the dense dual structure leads to a significant reduction in porosity-induced linewidth; ultimately, the ferromagnetic resonance linewidth is greatly reduced.
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DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Feng Wu,Ziyue Wen,Zhikun Zhao,Jiaying Bi,Yanxin Shang,Yaohui Liang,Li Li,Nan Chen,Yuejiao Li,Renjie Chen
The application of solid polymer electrolytes for Li metal batteries (LMBs) is hindered by the Li/electrolyte interface instability and poor mechanical strength . Herein, a flexible composite solid electrolyte with a cross-linked double-network structure of inorganic particles and polymer was constructed by an in situ gel-sol method. The as-prepared electrolyte promoted the formation of a stable solid electrolyte interface on the Li metal surface and suppressed the formation of Li dendrites more than pure polymer electrolytes. Particularly, X-ray photoelectron spectroscopy results demonstrated the beneficial effect of inorganic particles for suppressing the side reactions between the Li metal and polymer. Additionally, the as-prepared electrolyte exhibited a reduction of polymer crystallinity, which can facilitate Li + transport by weaking the interactions between Li + and the polymer chains. The Li|Li symmetric batteries were stabilized to maintain successive electrodeposition over 1400 h of the plating/stripping process. Furthermore, the Li|LiFePO 4 batteries displayed excellent cycling performance at a rate of 0.3 C, revealing tremendous potential in promoting the large-scale application of future LMBs.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 19
·2000613
·
IF 16.836
Yusen He,Mingjun Li,Yongguang Zhang,Zhenzhen Shan,Yan Zhao,Jingde Li,Guihua Liu,Chunyong Liang,Zhumabay Bakenov,Qiang Li
The main obstacles that hinder the development of efficient lithium sulfur (Li–S) batteries are the polysulfide shuttling effect in sulfur cathode and the uncontrollable growth of dendritic Li in the anode. An all-purpose flexible electrode that can be used both in sulfur cathode and Li metal anode is reported, and its application in wearable and portable storage electronic devices is demonstrated. The flexible electrode consists of a bimetallic CoNi nanoparticle-embedded porous conductive scaffold with multiple Co/Ni-N active sites (CoNi@PNCFs). Both experimental and theoretical analysis show that, when used as the cathode, the CoNi and Co/Ni-N active sites implanted on the porous CoNi@PNCFs significantly promote chemical immobilization toward soluble lithium polysulfides and their rapid conversion into insoluble Li 2 S, and therefore effectively mitigates the polysulfide shuttling effect. Additionally, a 3D matrix constructed with porous carbonous skeleton and multiple active centers successfully induces homogenous Li growth, realizing a dendrite-free Li metal anode. A Li–S battery assembled with S/CoNi@PNCFs cathode and Li/CoNi@PNCFs anode exhibits a high reversible specific capacity of 785 mAh g −1 and long cycle performance at 5 C (capacity fading rate of 0.016% over 1500 cycles).
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高影响因子
ACS Nano
·
2025
·
IF 16
Xin Qin,Lu Zhao,Junwei Han,Jing Xiao,Yafei Wang,Changzhi Ji,Ting Liu,Mingxue Zuo,Junshu Sun,Debin Kong,Mingbo Wu,Wei Lv,Quan-Hong Yang,Linjie Zhi
Although a high stack pressure (≥50 MPa) enhances solid–solid contacts in solid-state batteries (SSBs), it poses impracticality for commercialization. This work proposes a self-pressure silicon (Si)-carbon composite anode that enables stable operation under reduced external pressure (≤2 MPa). The self-pressure anode features a prestress structure that can effectively alleviate the internal and external stress simultaneously, which is fabricated with ionic-conductive poly(ethylene oxide) (PEO)/lithium salt-coated carbon nanotubes (CNTs) being compressed by shrinking graphene hydrogel. The capillary-driven hydrogel shrinkage generates internal pressure, compensating for the volumetric expansion (up to 300%) of Si. This creates dynamic solid–solid interfaces between compressed CNTs/PEO and expanding Si, ensuring both mechanical stability and ion/electron transport. The SSBs with this self-pressure anode have a long cycle life of 700 cycles and a high capacity retention of 79.2% in an organic/inorganic composite electrolyte without external pressure (0 MPa). The half-cell using a sulfide solid-state electrolyte reached 700 cycles and was able to achieve a stable cycle life at the lowest 2 MPa stack pressure. This design resolves interfacial challenges by prestress in SSBs.
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Xia Wu,Shi-Xi Zhao,Lü-Qiang Yu,Jing-Wei Li,En-Lai Zhao,Ce-Wen Nan
MoO 3 -P 2 O 5 glasses were prepared by a simple melt quenching method. XRD and DSC investigations confirmed the amorphous state of 60Mo-40P, 70Mo-30P and 75Mo-25P glass. Interestingly, HRTEM images revealed the inherent crystallization behavior in Mo enriched glass. The existing nanocrystals performed a synergetic effect with the glass matrix to relax the stress caused by Li ions insertion/extraction. As a result, 75Mo-25P glass with distinct nanocrystals showed excellent long cycling stability. The structural transition of MoO 3 -P 2 O 5 glass and the valence change of Mo ions during cycling were discussed. Furthermore, CV and EIS measurements were performed to elucidate the difference of redox reaction , electrons transport and ions diffusion in 75Mo-25P glass and crystalline MoO 3 . This study provides an avenue to exploit new cathode materials with long cycling life for Li-ion batteries.
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高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Hongyu Dong,Ke Li,Yiwen Wang,Yanhong Yin,Shuting Yang
Lithium-oxygen (Li–O 2 ) batteries are an ideal energy storage device, but the problems of the cathode still hinder their development. In this work, a metal-free, binder-free and in situ pyridine N-doped cathode of Li–O 2 batteries is synthesized in one step by electrospinning. Meanwhile, the effect of carbonization temperature on cathode is discussed in detail. The content of pyridine N in the cathode is the highest at the carbonization temperature of 700 °C, and it is also the most effective for the reversible formation and decomposition of Li 2 O 2 . In terms of Li–O 2 batteries performance, when the charge and discharge current density is 100 mA g −1 and the discharge voltage is greater than 2 V, the discharge specific capacity and discharge capacity can reach 27900 mAh g −1 and 27.9 mAh respectively. In addition, when the limited specific capacity is 1000 mAh g −1 , the batteries can work stably for 85 cycles under the same conditions. Therefore, the high-performance cathode which synthesized in one step by electrospinning is expected to promote the commercial application of Li–O 2 batteries.
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高影响因子
Journal of Energy Chemistry
·
2019
·
IF 5.162
Ziyang Jia,Hongzhang Zhang,Ying Yu,Yuqing Chen,Jingwang Yan,Xianfeng Li,Huamin Zhang
Lithium–sulfur (Li–S) batteries have great potential as an electrochemical energy storage system because of the high theoretical energy density and acceptable cost of financial and environment. However, the shuttle effect leads to severe capacity fading and low coulombic efficiency. Here, graphitic carbon nitride (g–C 3 N 4 ) is designed and prepared via a feasible and simple method from trithiocyanuric acid (TTCA) to anchor the polysulfides and suppress the shuttle effect. The obtained g–C 3 N 4 exhibits strong chemical interaction with polysulfides due to its high N–doping of 56.87 at%, which is beneficial to improve the cycling stability of Li–S batteries. Moreover, the novel porous framework and high specific surface area of g–C 3 N 4 also provide fast ion transport and broad reaction interface of sulfur cathode, facilitating high capacity output and superior rate performance of Li–S batteries. As a result, Li–S batteries assembled with g–C 3 N 4 can achieve high discharge capacity of 1200 mAh/g at 0.2 C and over 800 mAh/g is remained after 100 cycles with a coulombic efficiency more than 99.5%. When the C–rate rises to 5 C, the reversible capacity of Li–S batteries can still maintain at 607 mAh/g.
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高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Huixian Xie,Liping Tan,Zhuo Yao,Jiaxiang Cui,Xiaokai Ding,Zuhao Zhang,Dong Luo,Zhan Lin
Li-rich Mn-based layered oxides are proposed to be candidates for high-energy Li-ion batteries. However, their large-scale production is still hampered by poor rate capability and severe voltage decay. It was mainly attributed to the irreversible oxygen loss, which induces transition metal ion migration, electrolyte consumption, and structural evolution. Herein, we propose an effective strategy of phosphorylation, in which the phosphate ion is induced to remove the surface labile oxygen. It urges the Li2MnO3 component to transform to the spinel-like structure and promotes the anionic redox process, thus facilitating lithium-ion diffusion and improving structural stability. As a result, the Li2MnO3 component is more prone to be activated, with the capacity increased by 18% in comparison with the pristine one. It also exhibits a superior capacity retention of 86.1% after 150 extended cycles and better rate performance delivering a capacity of 148.1 mA h g–1 even at 10 C. The effective phosphorylation opens a new way to tune anion redox chemistry and obtain structurally stable materials.
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PubMed
高影响因子
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