Journal of Energy Storage
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2024
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IF 8.9
Jinyin Cheng,Haochang Zhang,Zhixin Wang,Yaqing Zhou,Kangzhe Yu,Yan Cheng,Zhaozhe Yu,Xiao Huang,Bingbing Tian
Emerging halide superionic conductors with remarkable oxidative stability and deformability , making them a potential game-changer for high-performance all-solid-state Li batteries (ASSLBs). The recently reported Li 2 ZrCl 6 (LZC) with low cost possess great potential. However, its ionic conductivity at 25 °C is below 1 mS cm −1 . Herein, we developed a Li-richened strategy to LZC by doping O 2− at Cl − site via a mechanochemical method to form oxychloride electrolytes Li 2+ x ZrCl 6− x O x (0 ≤ x ≤ 1.8), resulting in high ionic conductivity up to 1.46 mS cm −1 at room temperature (RT). The experimental results and theoretical calculations (ab initio molecular dynamics simulations) demonstrate that the Li 2 O doping leading to a Li-richened LZC lattice effectively enhances the Li + conductivity in solid-state electrolytes (SSEs). Significantly, an increasing O 2− substitution in the Li 2+ x ZrCl 6− x O x microcrystalline framework induces a progressive structural evolution from triangular to monoclinic phases, accompanied by a redistribution of Li + . Furthermore, the ASSLBs formed by Li 3.4 ZrCl 4.6 O 1.4 (LZCO) with Li-In anode and bare LiCoO 2 cathode shows excellent long-term cycling stability (94 % capacity retention for 600 cycles at 1 C) and high-rate performance (105.7 mAh g −1 at 2 C). This exploratory study provides a promising strategy to facilitate the application of low-cost LZC-based SSEs for high-performance ASSLBs.
研究领域:
材料科学
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能源存储技术
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DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
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IF 14.7
Wang Hangchao,Yang Yali,Gao Chuan,Chen Tao,Song Jin,Zuo Yuxuan,Fang Qiu,Yang Tonghuan,Xiao Wukun,Zhang Kun,Wang Xuefeng,Xia Dingguo
To improve the interface stability between Li-rich Mn-based oxide cathodes and electrolytes, it is necessary to develop new polymer electrolytes. Here, we report an entanglement association polymer electrolyte (PVFH-PVCA) based on a poly (vinylidene fluoride-co-hexafluoropropylene) (PVFH) matrix and a copolymer stabilizer (PVCA) prepared from acrylonitrile, maleic anhydride, and vinylene carbonate. The entangled structure of the PVFH-PVCA electrolyte imparts excellent mechanical properties and eliminates the stress arising from dendrite growth during cycling and forms a stable interface layer, enabling Li//Li symmetric cells to cycle steadily for more than 4500 h at 8 mA cm −2 . The PVCA acts as a stabilizer to promote the formation of an electrochemically robust cathode–electrolyte interphase. It delivers a high specific capacity and excellent cycling stability with 84.7% capacity retention after 400 cycles. Li 1.2 Mn 0.56 Ni 0.16 Co 0.08 O 2 /PVFH-PVCA/Li full cell achieved 125 cycles at 1 C (4.8 V cut-off) with a stable discharge capacity of ~2.5 mAh cm −2 .
研究领域:
材料科学
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电化学
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电池技术
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聚合物化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2019
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IF 5.107
Zheng Ling,Changrui Shi,Feng Li,Yixuan Fu,Jiafei Zhao,Hongsheng Dong,Yamei Yang,Hang Zhou,Shuai Wang,Yongchen Song
Hydrate-based desalination is an attractive and energy-effective method. In order to obtain high water recovery and purity, the desalination and Li + enrichment performance were examined using single-stage desalination via graphite-promoted cyclopentane (CP) hydrate formation. LiCl, LiBr and LiI aqueous solutions with concentration ranging from 0.01 to 0.6 mol/L were used as brine. The rate for CP hydrate formation is determined by concentration, independent of the type of used salts. Halide ions were found to have the different capability in hindering CP hydrate-based desalination, with an order of Cl − < Br − < I − . The desalination efficiency was improved with increased concentration. Water recovery of 40% can be obtained in 1 h reaction, demonstrating the high efficiency of hydrate-based desalination. The desalination efficiency remains constant at around 70% over 24 h reaction, which can be dramatically enhanced by multi-stage desalination. The graphite powder, as the promoter for hydrate formation shows impressive recycling stability. The finding in this study would be of great help for developing effective desalination processes to produce fresh water and enrich high-value salts via CP hydrates.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
SOLID STATE IONICS
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2013
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IF 2.046
Alexandre Dumon,Mian Huang,Yang Shen,Ce-Wen Nan
Strontium doped lithium ion garnets Li 7 La 3 Zr 2 O 12 (LLZ) with 0.9 wt% to 8.4 wt% content of added Sr were synthesized via conventional solid-state reaction. X-ray diffraction patterns confirmed the cubic garnet structure of the sintered samples. A small amount of strontium was substituted to lanthanum in LLZ lattice. Further analysis showed SrCO 3 acted as a sintering aid for cubic LLZ ceramics and significantly increased the grain size of the sintered pellets. A conductivity of 2.10 × 10 − 4 S/cm at 297 K was obtained for the undoped LLZ. The total ionic conductivity reached a maximum of about 5 × 10 − 4 S/cm at 297 K with an activation energy of about 0.31 eV for 1.7 wt% Sr added LLZ sintered for 20–24 h in alumina crucible.
研究领域:
材料科学
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固态离子学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Huawen Peng,Yongjin Hu,Shaoping Li,Jingyi Rao,Qiang Zhao
High performance Mg 2+ /Li + separation membranes are needed to meet the rising demands for lithium supply, yet state-of-the-art polyamide nanofiltration membranes show limited permeance due to relatively dense structures. This work exploited sulfonium salts for the first time to modify nanofiltration membranes , leading to sulfonium-polyamide membranes with high Mg 2+ /Li + separation performance. The occurrence and competition of three types of reactions during the surface modification process were studied and correlated to properties of resultant membranes. Both the positive charge and loose structures of polyamide membranes were enhanced as a result of sulfonium modification, leading to ∼4.3 times improved permeance. The modified membrane exhibited water permeance (∼26.4 L m -2 h -1 bar -1 ) that is one of the top tier values among recent membranes, coupled with good Mg 2+ /Li + selectivity (∼11) in separating high Mg 2+ /Li + ratio feed (∼103). Moreover, the modified membrane showed good stability during one-month continuous operation. This work shows the promising potential of sulfoniums for engineering advanced lithium extraction membranes.
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高影响因子
FIBERS AND POLYMERS
·
2019
·Vol. 20
·期 5
·961-965
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IF 1.439
Song Kedong,Zhang Ping,Huang Yuting,Xu Fu,Ding Yanhuai
Polyurethane (PU) has been intensively studied as a promising separator material for Li-ion batteries (LIBs). However, poor dimensional stability and low liquid-electrolyte wettability of pure PU separator restrict its application in LIBs. Here polyvinyl pyrrolidone (PVP) and graphene oxide were employed to enhance the thermal stability, mechanical performance and liquid-electrolyte compatibility of PU separator. High anodic stability above 5.25 V was reached in PU/PVP/GO separator, fully compatible with the high-voltage cathode materials. The electrochemical characterization indicates PU/PVP/GO membrane is a promising separator for advanced LIBs.
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DOI
高影响因子
IONICS
·
2018
·Vol. 25
·期 4
·1669-1677
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IF 2.347
Yuan Jiashu,Liu Zhihao,Wen Yandi,Hu Huili,Zhu Yongming,Thangadurai Venkataraman
Li–oxygen battery provides much higher specific energy density compared to conventional Li–ion batteries, but there is a lack of desired cathodes which show lower over-potential during the charging cycle. Here, we report the effect of surface morphology of carbon-free spinel-like NiCo 2 O 4 nanowires and nanosheets on Ni foam on cathode performance in Li–O 2 battery. Two hierarchical structured NiCo 2 O 4 cathodes were synthesized by using a hydrothermal method. Physical, chemical, and electrochemical properties of NiCo 2 O 4 were characterized using powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, BET surface area, electrochemical AC impedance spectroscopy, and linear sweep voltammetry. Scale-like NiCo 2 O 4 electrode showed the highest specific capacity, compared to that of rod-like morphology, which seems due to a superior catalytic activity for oxygen reduction reaction, with lower charging over-potential, high discharge capacity, and excellent cycle performance.
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高影响因子
ChemNanoMat
·
2022
·Vol. 8
·期 10
·e202200324
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IF 3.82
Hualun Li,Tian Chen,Wei Wang,Guandao Gao,Zhenda Lu
Graphical Developing an effective material to recover lithium from salt-lake brines or used batteries is highly demanded. We report a reduced TiO 2 nanomaterial with numerous lithium vacancies by lithiothermic reaction, exhibiting a high Li-ion adsorption capacity of 26 mg/g from solution. Considering the growing lithium demand and the potential shortage of lithium resource, developing an effective material to recover lithium from salt-lake brines or used batteries is highly needed. Here, we report a reduced TiO 2 nanomaterial (LiTiO 2 ) with numerous lithium vacancies by lithiothermic reaction, which exhibited high adsorption capacity of 26 mg/g from lithium-ion solution.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 27
·2001619
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IF 16.836
Jiaxin Li,Lie Wang,Yang Zhao,Shangyu Li,Xuemei Fu,Bingjie Wang,Huisheng Peng
Lithium-carbon dioxide (Li-CO 2 ) batteries are considered promising energy-storage systems in extreme environments with ultra-high CO 2 concentrations, such as Mars with 96% CO 2 in the atmosphere, due to their potentially high specific energy densities. However, besides having ultra-high CO 2 concentration, another vital but seemingly overlooked fact lies in that Mars is an extremely cold planet with an average temperature of approximately −60 °C. The existing Li-CO 2 batteries could work at room temperature or higher, but they will face severe performance degradation or even a complete failure once the ambient temperature falls below 0 °C. Herein, ultra-low-temperature Li-CO 2 batteries are demonstrated by designing 1,3-dioxolane-based electrolyte and iridium-based cathode, which show both a high deep discharge capacity of 8976 mAh g −1 and a long lifespan of 150 cycles (1500 h) with a fixed 500 mAh g −1 capacity per cycle at −60 °C. The easy-to-decompose discharge products in small size on the cathode and the suppressed parasitic reactions both in the electrolyte and on the Li anode at low temperatures together contribute to the above high electrochemical performances.
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高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Zhenggang Zhang,Zhendong Li,Huan Lin,Muqin Wang,Zhifu Luo,Feihong Ren,Zixuan Liu,Chen Zhou,Zhe Peng,Deyu Wang
Utilization of the lithium (Li) metal anode is seriously prevented by the undesirable side reactions with electrolyte solvents due to their mismatched energy gaps and easily lacerated SEI layer. In this work, we develop a transplantable carbonaceous membrane with a particular ability of filtrating Li+ ions by blocking organic solvents and use it as an independent protective component to isolate lithium metal anode from the electrolytes. This graphene-supported N-doped membrane (GNM) can separate organic carbonates of dimethyl carbonate (DMC) and diethyl carbonate (DEC) from H2O–DMC/DEC mixtures by holding back the organic solvents. When this membrane is used in a Li–Cu cell, a high Li Coulombic efficiency (CE) of 98.5% is maintained in carbonate electrolyte over 400 cycles. Application of GNM in Li–O2 full cell provides a sustainable use of Li metal for more than 200 cycles (2000 h) by keeping its shiny metal luster. Our results demonstrate that the use of an independent component with Li+ filtrating ability, such as the transplantable membrane of GNM developed in this work, should be a feasible remedy to protect Li metal anode in practical Li metal batteries.
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Liqin Zhao,Xiaojie Zhang,Keyi Liu,Xin Liu,Yuefa Gong,Hong Peng,Wei Qi
Lithium/aluminum layered double hydroxides (LDH) have been industrially applied to extract lithium from salt-lake brine. Different from traditional granulation methods, chitosan with high hydrophilicity was used as the binder of LDH in this work, and LDH/chitosan composite hydrogel granules (CLDH) with a diameter of about 1–2 mm were successfully prepared. The new granulation method is simple, cost-effective, and does not require the use of organic solvents. The chemical composition and structure of CLDH were characterized by techniques such as FTIR, XRD, FESEM, TEM, TGA, and XPS. In simulated brine with a Mg 2+ /Li + ratio of 102, the maximum saturated adsorption capacity of lithium on CLDH-3 reached 12.5 mg g −1 (pH = 6.5), but it took 24 h to reach adsorption equilibrium. During the three successive cycles for the extraction of Li + from simulated brine by the CLDH-3 column at the flow rate of 1 mL min −1 , the adsorption capacities of Li + on CLDH-3 in the three cycles were 15.4, 15.9 and 12.1 mg g −1 , respectively. Moreover, deionized water (30 °C) was used as the eluent to recover lithium adsorbed on the CLDH-3 column, and the lithium recovery efficiencies reached 50.7 %, 53.6 %, and 62.8 % of the column adsorption capacities over the three cycles, respectively, and the Mg/Li ratios in the eluents were 0.47, 0.71, and 0.50, respectively. Overall, CLDH-3 exhibits good reusability, mechanical strength, structural stability, and selectivity in the process of lithium extraction from simulated salt-lake brine, and has potential industrial application value.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Lei Ding,Dandan Li,Sihang Zhang,Zhaoyang Wang,Pengfang Zhang,Fanghui Du,Shuyue Zhao,Daoxin Zhang,Feng Yang,Shuo Zhang
Lithium-sulfur (Li-S) batteries with attractive capacity give remarkable potential for prospective high-capacity application scenarios but suffer a fatal flaw of short cyclability before large-scale commercialization especially owing to polysulfide (Li 2 S n ) transmembrane shuttling. To efficiently restrain chronic Li 2 S n shuttle and expedite Li + transfer, herein, a novel electriferous charge-mosaic S(TMC@Lys-Li) separator preparation approach is recommended. Interfacial polymerizations of lithiated lysine and trimesoyl chloride establish an electriferous charge-mosaic polyamide functional layer. Substituted Li within the charge-mosaic layer offers transition or replacement sites for smoothing Li + migrations, which constructs efficient Li + fast-transfer private channels and accelerates the Li + transfer rate to 9.4 times. Negatively charged polyamide skeleton synchronously heightens Li 2 S n rejections by combining Donnan and steric effects. S(TMC@Lys-Li) replenishes Li for homogenizing Li nucleation and growth, endowing stable plating/stripping behaviors over 250 cycles for Li-Cu batteries. Assembled Li-S cells thus exhibit excellent specific capacity and cyclability at multiple application scenarios such as long periods, high areal capacity, and fast charge, holding 78.1% retention after 500 cycles at 1 C. The superior thermal stability and self-discharge of S(TMC@Lys-Li) dramatically strengthen battery thermal runaway resistance even at 155 ℃, which ensures security for Li-S battery high-power and high-temperature operations. Above alluring features enable charge-mosaic separators to be potentially adopted in practical Li-S batteries demanding strict security, high-capacity density, and fast charge technology.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
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