ACS Applied Energy Materials
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2022
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IF 6.959
Zhengying Wang,Qi Li,Keyan Sheng,Jiang Huang,Chun Fang,Jiantao Han
“Water-in-salt” electrolytes have enlarged the electrochemical window of aqueous electrolytes to 3.0 V. However, the practical application of this electrolyte faces the challenge of high cost. Recently, we have proposed a low-cost inorganic room temperature molten salt (RTMS) electrolyte with a widened electrochemical window of 3.1 V. Herein, the RTMS electrolyte has been integrated with a hydrophilic polymer by ultrafast polymerization through electron beam irradiation to further enlarge the anode limit, increase the ionic conductivity, and improve the thermal stability. The double-redox-active Prussian blue analogues of the cobalt hexacyanoferrate cathode (NaCoHCF) in the RTMS-based polymer electrolyte prepared by electron beam (EB) irradiation (e-RPE) show electrochemical performance with a high capacity of 137 mAh·g–1 at 1C and 100 mAh·g–1 at 5C. More significantly, at a high temperature of 60 °C, the NaCoHCF electrode in e-RPE exhibits a high capacity of 120 mAh·g–1 at 5C and a high capacity retention of 92% over 100 cycles at 1C. Compared to RTMS, the RTMS-based polymer electrolyte not only expands the hydrogen evolution limit but also shows high thermal stability, which is favorable for the electrochemical performance of NaCoHCF at high temperature. Furthermore, the battery with e-RPE is intrinsically safe and can be widely used in large-scale energy storage and wearable device applications.
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Batteries-Basel
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2022
·Vol. 8
·期 10
·161
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IF 5.938
Han Wang,Sidra Jamil,Wenwen Tang,Jing Zhao,Hui Liu,Shujuan Bao,Yijun Liu,Maowen Xu
Due to the high theoretical capacity of 1675 mAh g−1of sulfur, lithium-sulfur (Li-S) batteries can reach a high energy density of 2600 Wh kg−1, which has shown fascinating potential in recent decades. Herein, we report the spiderweb-like nanocage (Co/Mel) as a novel sulfur host with a melamine-sacrificed pyrolysis method. The incorporation of embedded cobalt nanoparticles (Co NPs) in the tips of carbon nanotubes (CNTs) can catalyze polysulfide transformation kinetics. In addition, the nanocages form a conductive three-dimensional spiderweb-like network that facilitates electrolytic penetration and electronic/ionic transportation. Moreover, the porous internal nano-cavities not only improve sulfur loading levels but also provide buffer space for volume expansion during charging and discharging. As a result, the hollow Co/Mel polyhedra with a high content of sulfur (75.5 wt%) displays outstanding electrochemical performance with an initial discharge-specific capacity of 1425.2 mAh g−1at 0.1 C and a low decay rate of only 0.028% after 1000 cycles at 1 C.Keywords:lithium-sulfur batteries;pyrolytic synthesis;zeolite imidazolate framework;spiderweb-like nanocages;catalytic conversion
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ACS Sustainable Chemistry & Engineering
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2022
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IF 9.224
Jiaxiang Liu,Nanbiao Pei,Haiming Hua,Yi Deng,Haoshen Ma,Peng Zhang,Jinbao Zhao
The solid electrolyte interphase (SEI) film is vital to the plating/stripping behavior of lithium metal, while the formation mechanism has not been explained clearly. Here, the formation process of the SEI film is first classified into chemical and electrochemical degradation routes by introducing a LiZn alloy, a chemically inert but electrochemically reactive interphase, as a distinguished research substrate. In a carbonate electrolyte, it is found that the common inorganic matters (such as Li2O and LiF) mainly originate from the chemical degradation of the electrolyte; meanwhile, the electrochemical degradation mainly generates organic species such as C-OR and COOR. Based on this understanding, the SEI film can be further accurately regulated, and a heterojunction-type SEI film with a well-defined composition and structure is constructed. This offers us a new perspective to understand and regulate the formation of the SEI film for applicable lithium metal batteries.
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高影响因子
Journal of Essential Oil Bearing Plants
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2022
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IF 1.971
Yuanyuan Zhang,Lin Zhang,Yongbin Meng,Yuangang Zu,Feng Han,Xiuhua Zhao
The utilization of natural product resources is significant for economic growth and health care. Herein, Cinnamomum longepaniculatum essential oil (CLEO) was isolated by microwave-assisted hydrodistillation (MAH). The composition of CLEO was determined by gas chromatography/mass spectrometry (GC/MS), and the antibacterial, nematicidal and anxiolytic activities of CLEO were evaluated. GC/MS results revealed that 33 compounds were identified, accounting for 99.87% of the total identified compounds. The major components of CLEO were monoterpenes, including β-myrcene (22.55%), eucalyptol (11.59%), α-pinene (11.56%), terpinen-4-ol (8.63%). Further research found that CLEO can inhibit the growth of Staphylococcus aureus (MIC 7.13 mg/mL, MBC 14.25 mg/mL), Escherichia coli (MIC 14.25 mg/mL, MBC 57 mg/mL), and Pseudomonas aeruginosa (MIC 14.25 mg/mL, MBC 28.50 mg/mL), the zone of inhibition were 17.49 ± 0.51 mm, 13.35 ± 0.27 mm and 15.15 ± 0.31 mm, respectively. CLEO could increase cell membrane permeability and make β-galactosidase, protein and other substances leak from the cell. Importantly, CLEO was first used to kill pine wood nematodes (PWN, Bursaphelenchus xylophilus). It was found that CLEO was toxic to B. xylophilus (LC50=30.81 mg/mL), and PWN treated with CLEO rapidly died and extended. Furthermore, CLEO was used in anxiolytic for the first time. CLEO inhalation can effectively relieve anxiety-like behaviors in open-field test (OFT) and elevated plus-maze test (EPT), and restore neurotransmitters (5-HT, NE, GABA) in brain tissue to normal levels. This study provides a strategy for the industrial production of CLEO and discovers its potential role in food transportation and preservation, forest pest control, and relief of emotional disorders such as anxiety and stress, which are beneficial to health care and economic development and provides a basis for broader application of CLEO.
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COMPOSITES SCIENCE AND TECHNOLOGY
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2022
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IF 9.879
Jian Lin,Yan-Fei Li,Jing-Ping Zhang,Hai-Ming Xie,Hai-Zhu Sun
To ensure a satisfactory stability and conductivity, excess carbonaceous component has to be introduced in anode materials at most cases, which sacrifices the energy density of the half/full cell. Herein, a new strategy is proposed that metal-heteroatom bonds are quantitatively introduced to enhance the interaction between each component in electrode. This strategy is successfully applied in fabricating Mo-based (MoO 2 -X@N– C) electrode materials with active materials content as high as 65.00%. The realization of quantitative control mainly results from the usage of gelatin that can anchor each active component together for the abundant functional groups. As a result, long-life cycle capacity (400 mAh/g at 1 A/g for 2700 cycles) is achieved. Moreover, the full cell of the LiFePO 4 //MoO 2 -2@N–C exhibits 124 mAh/g after 100-cycle and maintains the high energy density of 166.7 Wh/kg. This work gives light on anode synthesis that can be large scale-produced with a time-saving strategy for ultra-stable energy storage devices.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 26
·20518-20531
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IF 2.779
Luo Huan,Li Hao,Yuan Shengxu,Li Jinchao,Zhang Yaping,Duan Hao,Li Jing
In this work, the Li-rich manganese layered oxide Li 1.2 Mn 0.54 Ni 0.13 Co 0.13 O 2 (LMNC in short) is coated with a novel Al 2 O 3 –ZrO 2 layer for lithium-ion battery application. Three modified LMNC materials including AZ1, AZ2 and AZ3 with different mass ratios between Al 2 O 3 –ZrO 2 coating and LMNC are successfully prepared. Al 2 O 3 –ZrO 2 coating layer inhibits the side reactions, restricts the transformation of layered structure and enhances the stability of LMNC. The coated LMNC shows the most excellent electrochemical performance for application in lithium-ion battery, when the mass ratio between Al 2 O 3 –ZrO 2 coating layer and LMNC is 2 wt% (AZ2). The specific discharge capacity of AZ2 (111.0 mAh g −1 ) is significantly higher than that of pristine LMNC (i.e., AZ0) (85.6 mAh g −1 ) at the 10 C rate. Moreover, the AZ2 shows outstanding durability during the 200 times cycling charge and discharge tests at 1 C, whose capacity retention rate and voltage decay are 81.6% and 370.1 mV after 200 cycles, respectively. Specifically, the voltage decay rate of AZ2 is much lower than those of most reported Li-rich manganese layered oxides. Therefore, the as-prepared AZ2 cathode material with excellent electrochemical performance has a bright future for lithium-ion battery application.
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CERAMICS INTERNATIONAL
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2022
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IF 5.532
Hongkun Wu,Zhen Wang,Xiaoyuan Zeng,Zitong Fei,Yang Gu,Kai Ding,Peng Dong,Yingjie Zhang,Qi Meng
With the use of lithium batteries increasing year by year, resulting in a large number of waste lithium-ion batteries generated, bringing pressure to the ecological system while also causing a waste of Co resources. Although Co-based catalysts are also of interest in the Li–CO 2 system, no research has been reported on the preparation of catalysts for value-added utilization of recovered Co. In this paper, Li–CO 2 batteries with Co 3 O 4 /CNT cathodes were prepared by environmentally friendly hydrothermal method employing cobalt oxalate recycled from waste lithium-ion batteries as a Co source in combination with commercial CNT. Unlike traditional noble metal and transition metal-based catalysts, which are expensive and complicated, this work can further reduce the cost of batteries by recycling valuable Co sources from waste lithium-ion batteries. As a result, the battery has the discharge capacity of 2728 mAh g −1 at a current density of 100 mA g −1 . Not only that, but it can reach more than 85 cycles at a limited capacity of 400 mAh g −1 .
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JOURNAL OF MATERIALS SCIENCE
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2022
·Vol. 57
·期 28
·13527-13540
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IF 4.682
Chen Dongli,Zhu Ming,Zhan Wenwei,Long Lei,Yu Lu,Zhu Tao,Kang Peibin,Yang Xiaoping,Sui Gang
Abstract Lithium–sulfur (Li–S) batteries have been considered as a promising substitute for lithium-ion batteries because of their high theoretical specific capacity, low cost, and environmental friendliness. However, the further practical application of Li–S batteries is greatly limited by the intrinsic insulation of sulfur, the shuttle effects of polysulfides and sluggish kinetics of the redox reaction. Herein, a well-designed Fe, N co-doped mesoporous carbon sphere (Fe-N-MCS) was fabricated to modify separator for absorbing and reutilizing polysulfides in high-performance Li–S batteries using cost-effective S cathode. The obtained Fe-N-MCS was not only acted as a physical barrier layer to block polysulfides, but also as trapper to capture and anchor polysulfides due to its highly porous structure and N dopants in the carbon frameworks. Furthermore, the high-conductive Fe-N-MCS barrier layer can facilitate electron and ion transfer to improve the electrochemical reutilization of polysulfide trapped therein, because the Fe-N-MCSs exhibited high catalytic activity for enormously boosting the redox kinetics of polysulfides. In consequence, the Li–S batteries with Fe-N-MCS modified separator exhibited high reversible capacity, superior rate capability and impressively cycling stability. The construction of non-precious metal barrier layer with catalyst activity is a promising pathway for the development of high-energy–density Li–S batteries. Graphical abstract The polysulfides were anchored and reutilized by the Fe-N-MCS layer for high-performance lithium sulfur battery.
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Frontiers in Energy Research
·
2021
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IF 4.008
Hu Lei,Yang Xulai,Chen Yumeng,Wang Lili,Li Jiajia,Tang Yujie,Zhang Haitao
TiNb2O7 (TNO) compound has been pursued tremendously due to its high theoretical capacity, high potential, and excellent cycle stability. Unfortunately, an intrinsic low electronic and ionic conductivity feature has restricted its broad applications in electrochemical energy storage fields. Two-dimensional (2D) nanostructures can effectively shorten Li-ion transport path and enhance charge transfer. Here, hierarchical structure TNO was constructed by using ethanol and acetic acid as particularly important organic chemicals of basic raw materials via a simple solvothermal reaction. Ethanol was found to play a critical role in the formation of 2D sheet structure. Meantime, reduced graphene oxide nanosheets can effectively improve electronic conductivity. As-obtained TiNb2O7 were wrapped further by graphene oxide nanosheets through a flocculation process. Their unique structure is beneficial to the final electrochemical performance. This study not only provides a general approach for the design of novel 2D nanomaterials wrapped by graphene because of the advantage of esterification reaction and flocculation reaction, but also improves the electronic and ionic conductivity simultaneously.
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VACUUM
·
2021
·
IF 3.627
Yin Li,Li Wang,Hui Zhang,Feng Liang,Yaochun Yao,Keyu Zhang
Three-dimensional (3D) LiFePO 4 @MWCNTs composite has been prepared using phytic acid as the phosphorus source by a simple solvothermal method combined with freeze drying under vacuum. The relationships between the phase structures, the morphologies and electrochemical performance characteristics of the as-prepared samples are studied using a series of characterization methods. It is found that the MWCNTs wrap around the LiFePO 4 particles to form a 3D network because of the reactions between the special functional groups of the phytic acid with Fe 2+ and –C O or –COOH on the surface of the functionalized MWCNTs, resulting in the improvement of conductivity and the electron and ion transport. Due to these merits of MWCNTs and phytic acid, the LiFePO 4 @MWCNTs exhibits good electrochemical performance with high initial discharge capacities of 152.7, 149.6 and 138.8 mAh g −1 at 1, 2 and 5C, respectively. Even at 10C, it still delivers a capacity of 117.5 mAh g −1 .
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2021
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IF 4.464
Hai Zhu,Yaling Zhang,Mingyang Li,Jinhua Luo,Weifeng Wei,Shiying Zhang
Li-rich layered oxides (LLO) feature high delivery capacity are considered the most promising cathodes for the next-generation high-energy–density battery systems. Unfortunately, the LLO cathode suffers from poor cycling stability and fast voltage fading because of structural failure and unstable electrode/electrolyte interphase. Herein, we propose 2,4,6-trimethoxyboroxine (TMBX) as an effective electrolyte additive for enhancing the specific capacity and service life of LLO cathode. Impressively, the LLO/Li cell with 1 wt% TMBX exhibits a specific capacity of 226.3 mAh/g with a considerable cycling retention of 96.1% at 0.5 C after 200 cycles, while the capacity of the baseline cell is only 133.8 mAh/g and the cycling retention is less than 60%. Even at 1 C, the cell using TMBX additive still sustains a capacity retention of as high as 91.1% after 400 cycles. The cell with excellent performance is attributed to TMBX additive which can form a uniform, robust, and boron-rich interface film on both the cathode and anode surfaces simultaneously. Structural characterization and mechanism analysis reveal that TMBX additive can effectively eliminate HF hydrolysis from LiPF 6 , alleviate the loss of transition metal ions, maintain the integrity of crystal structure and improve the interfacial charge transfer.
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高影响因子
OPTICAL MATERIALS
·
2021
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IF 3.08
Panpan Du,Qi Zhu,Xiaodong Li,Xudong Sun,Byung-Nam Kim,Ji-Guang Li
A series of garnet-type Li 6 CaLa 2(1- x ) Nb 2 O 12 : x RE phosphors (LCLN: x RE, RE = Pr, Sm, Tb and Dy) were prepared via sol-gel processing and subsequent calcination for the first time, with the course of phase evolution and the characteristics of the LCLN host and RE 3+ luminescence being investigated in detail. It was found that ∼900–1000 °C is a suitable temperature for precursor calcination to produce the garnet phase and LCLN has a relatively low phonon energy (∼725 cm −1 ) and a relatively wide bandgap (∼4.53 eV) for luminescence. The LCLN:0.012Pr, LCLN:0.04Sm, LCLN:0.06 Tb and LCLN:0.06Dy typical phosphors were analyzed to have dominant excitation/emission bands at ∼278/489, 265/614, 268/549 and 264/581 nm, emission colors of white, orange, green and yellowish white, and fluorescence lifetimes of ∼0.43, 0.74, 0.90 and 0.44 ms, respectively. Temperature-dependent photoluminescence found that the four phosphors maintained ∼28, 37, 45 and 56% of their room-temperature intensities at 423 K, with activation energies for thermal quenching of ∼0.37, 0.29, 0.34 and 0.25 eV, respectively. The results demonstrated that the Li-stuffed LCLN garnet could be a suitable host for UV excitable multicolor phosphors.
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