Energy Storage Materials
·
2020
·
IF 16.28
Songtao Guo,Heng Li,Yue Lu,Zhifang Liu,Xianluo Hu
The high theoretical capacity of Sb-based intermetallic alloys makes them attractive potential anode materials for sodium-ion batteries (SIBs) with high energy density . However, their cycling stability is greatly restricted by the huge volumetric variations resulted from the intrinsic (de-)alloying mechanism. Herein, we demonstrate a unique lattice softening mechanism, which enables highly reversible sodium storage and stable cycling of the as-prepared Bi–Sb alloy/carbon nanofibers electrodes. Theoretical analyses show that the elastic modulus of Bi–Sb alloys is reduced whereas the toughness is enhanced by tuning the lattice chemistry of rhombohedral Bi–Sb alloys, which is of great importance in relieving the concentrated stress during the continuous (de-)sodiation processes. In-situ characterization and electrochemical evaluations demonstrate that the electrodes made of BiSb 3 /C nanofibers exhibit high anti-pulverization capability upon Na-cycling and extraordinary long-life cyclability. Specifically, a highly reversible capacity of 233.2 mAh g −1 at 2 A g −1 is achieved over 2500 cycles. Moreover, a full cell assembled with the pre-sodiated BiSb 3 /C anode and a Na 3 V 2 (PO 4 ) 3 /C cathode delivers a high reversible capacity of 333.2 mAh g −1 at 0.2 A g −1 over 200 cycles. This present work provides further understandings and new solution for developing high-performance alloying-based anodes for SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2022
·
IF 4.865
Shiyu Cui,Zhou Yi,Yi Xu,Jun Huang,Jilin Xu,Junming Luo,Qiong Jiang,Jiayi Peng,Xiaoma Tao
Molybdenum disilicide (MoSi 2 ) is a novel crack-healing material used in the traditional thermal barrier coating , which reacts with ZrO 2 to attain a corresponding volume expansion of approximately 138%. However, the pre-oxidation of MoSi 2 causes the “pesting” phenomenon, which degrades the microstructure and mechanical properties throughout the service. To address this issue, the aluminum oxide was fabricated on the MoSi 2 surface using the sol-gel method and low-pressure post-heat treatment to prevent oxygen penetration. The orthogonal experiment investigated the effect of pH, temperature, and water amount on sol generation. Because the Zeta potential difference has reached its maximum value (about 27 mV) at pH 4, the aluminum sol was notably adsorbed on the MoSi 2 particles. The modified MoSi 2 @Al 2 O 3 particles were characterized to understand their morphologies, surface adsorption energy, and crystal structures. The oxygen adsorption energy on the MoSi 2 (103) surface was lower than that on the Mo 5 Si 3 (411) surface, which indicated that the oxidization process can be divided into two independent steps. The Al 2 O 3 shell was uniformly formed on the MoSi 2 particles, especially in the low-vacuum environment (10 MPa) for 3 h post-treatment. The dense core-shell structure can prevent oxygen penetration into the MoSi 2 surface, thus prolonging the self-healing property of MoSi 2 .
研究领域:
材料科学
·
表面工程
·
涂层技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiahao Chen,Yaxin Li,Xinyuan Wu,Huihua Min,Jin Wang,Xiaomin Liu,Hui Yang
The structure instability and cycling decay of silicon (Si) anode triggered by stress buildup hinder its practical application to next-generation high-energy–density lithium-ion batteries (LIBs). Herein, a cross-linking polymeric network as a self-healing binder for Si anode is developed by in situ polymerization of tannic acid (TA) and polyacrylic acid (PAA) binder labelled as TA-c-PAA. The branched TA as a physical cross-linker complexes with PAA main chains through abundant dynamic hydrogen bonds, endowing the cross-linking TA-c-PAA binder with unique self-healing property and strong adhesion for Si anode. Benefiting from the mechanical robust and hard adhesion, the Si@TA-c-PAA electrode exhibits high reversible specific capacities (3250 mAh/g at 0.05C (1C = 4000 mA g −1 )), excellent rate capability (1599 mAh/g at 2C), and impressive cycling stability (1742 mAh/g at 0.25C after 450 cycles). After Ex situ morphology characterization, in situ swelling analysis, and finite element simulation, it is found that the TA-c-PAA binder allows the Si anode to dissipate stress and prevent pulverization during lithiation and delithiation, thus the hydrogen bonds among interpenetrating network may be adaptable to the stress intensity. Our work paves a new avenue for the design of efficient and cost-effective binders for next-generation Si anode in LIBs.
研究领域:
材料科学
·
能源存储
·
化学
·
电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2021
·Vol. 33
·期 49
·2105029
·
IF 30.849
Yusheng Ye,Yuanyuan Zhao,Teng Zhao,Sainan Xu,Zhixin Xu,Ji Qian,Lili Wang,Yi Xing,Lei Wei,Yuejiao Li,Jiulin Wang,Li Li,Feng Wu,Renjie Chen
Lithium metal is one of the most promising anode candidates for next-generation high-energy batteries. Nevertheless, lithium pulverization and associated loss of electrical contact remain significant challenges. Here, an antipulverization and high-continuity lithium metal anode comprising a small number of solid-state electrolyte (SSE) nanoparticles as conformal/sacrificial fillers and a copper (Cu) foil as the supporting current collector is reported. Guiding by the SSE, this new anode facilitates lithium nucleation, contributing to form a roundly shaped, micro-sized, and dendrite-free electrode during cycling, which effectively mitigates the lithium dendrite growth. The embedded Cu current collector in the hybrid anode not only reinforces the mechanical strength but also improves the efficient charge transfer among active lithium filaments, affording good electrode structural integrity and electrical continuity. As a result, this antipulverization and high-continuity lithium anode delivers a high average Coulombic efficiency of ≈99.6% for 300 cycles under a current density of 1 mA cm −2 . Lithium–sulfur batteries (elemental sulfur or sulfurized polyacrylonitrile cathodes) equipped with this anode show high-capacity retentions in their corresponding ether-based or carbonate-based electrolytes, respectively. This new electrode provides important insight into the design of electrodes that may experience large volume variation during operations.
研究领域:
能源材料
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Zikang Yang,Xue Liu,Fan Ren,Shaoqing Liu,Yanqing Zhang,Jianwen Liu
The large volume expansion and severe pulverization of silicon nanoparticles (SiNPs) during cycling have significantly hindered its application into lithium-ion batteries (LIBs). Graphene, for its excellent mechanical strength and high conductivity, has been widely applied to alleviate the swelling effect and enhance the ion conductivity of electrode materials. Herein, a facile and low-cost method to wrap Si by graphene aerogels with multiple shells is proposed in this work. Specifically, graphene oxide (GO) is synthesized by an improved Hummers’ method with waste graphite anode as raw material, the surface of SiNPs are modified with an amino group to achieve electrostatic attraction with an abundant carboxyl group on GO. Then a two-step reduction is carried out to synthesize a 3D graphene aerogel structure with uniformly distributed SiNPs, the inner rGO shell enhances the transport of ions on the surface of Si, the outer shell provides excellent confinement against the volume expansion during battery cycling.
研究领域:
材料科学
·
能量存储
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 43
·18367-18374
·
IF 0
Xiulin Fan,Jie Shao,Xuezhang Xiao,Xinhua Wang,Shouquan Li,Hongwei Ge,Lixin Chen,Chunsheng Wang
SnO2 has high capacity but poor cycling stability for Li-ion batteries due to pulverization and aggregation. Herein, we tackle these two challenges by uniformly dispersing carbon coated nanoSnO2 into a micro-sized porous carbon matrix to form a nano-SnO2/C composite anode using a facile and scalable in situ synthesis strategy. The SnO2@C nanocomposite exhibits a capacity of 640 mA h g−1 at 500 mA g−1 in the initial 150 cycles and then increases to 720 mA h g−1 and maintains this capacity for 420 cycles. The superior electrochemical performance with long cycle lifetimes of the carbon foam–SnO2 nanocomposites could be attributed to their unique carbon microstructures: the network of carbon sheets provides favorable electron transport, while the interconnected micro-/mesopores can serve as the effective channels of lithium ion transport, thereby supplying short lithium ion diffusion pathways. Meanwhile, these pores surrounding the active species of nanoSnO2 along with flexible carbon nanosheets can accommodate the severe volume variations during prolonged electrochemical cycling and mitigate the Sn aggregation. The present study provides a large-scale synthesis route to synthesize SnO2-based anode materials with superior electrochemical performance for lithium ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Kaiming Wang,Yifei Chen,Liang Zhang,Qihang Zhang,Zhi Cheng,Yining Su,Fei Shen,Xiaogang Han
Safety issues induced by infinite anode volume change and uncontrolled lithium (Li) dendrite growth have become the biggest obstacle to the practical application of Li metal batteries. In addition, the traditional rolling method makes it difficult to manufacture thin Li foil with high mechanical strength and low Li content. Herein, a three-dimensional (3D) lithophilic carbon paper/copper (Cu) current collector hybrid anode with ultra-low Li metal content is prepared by a hot-pressing method. The highly reversible and stable lithiophilic layer LiC x formed in situ by heating/pressing treatment provides abundant nucleation sites and reduces the Li nucleation overpotential, thereby effectively suppressing Li dendrite growth. Moreover, the volume change and pulverization problems of Li metal anode during deposition/stripping also can be accommodated by the 3D skeleton. The optimization effect has been directly confirmed by in-situ optical and ex-situ scanning electron microscope observation. Therefore, highly stable performance (158.4 mA h g −1 at 2 C after 200 cycles with a capacity retention of 95.24%) in Li@LCP-Cu||NCM811 coin cell can be achieved. Furthermore, the solid-state battery assembled with the hybrid anode, poly(vinylidene fluoride) (PVDF)-based polymer electrolyte and polyethylene oxide (PEO) interface functional layer also exhibits the best electrochemical and safety performance, which also proves that the Li@LCP-Cu anode has great potential for application in solid-state batteries.
研究领域:
材料科学
·
电化学
·
电池技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 53
·期 15
·10784-10797
·
IF 2.993
Bo Caiying,Hu Lihong,Chen Yong,Yang Xiaohui,Zhang Meng,Zhou Yonghong
A novel phosphorus-containing cardanol (PCC) derived from cardanol—a renewable meta -substituted phenol and harmful by-product of the cashew industry—in combination with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was used to produce bio-based phenolic foams (PFs). The properties of the PFs were then characterized in detail. The PCC was fully characterized by using Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance ( 1 H NMR), while the thermal degradation was studied and monitored by thermogravimetry coupled to FTIR (TGA/FTIR) and TGA coupled with mass spectrometry (TGA/MS). It was found that PCC exhibited high thermal stability. The total heat release, peak heat release rate and mean heat release rate of PF containing 4% PCC decreased by 13.55, 33.43 and 13.42%, respectively, in comparison with pristine PF. The enhanced flame-retardant behavior was attributed to the free radicals PO· produced during combustion, which captured free radicals in the gas phase; moreover, the phosphaphenanthrene group may create a char residue barrier against the further combustion of the polymer. Meanwhile, bio-based PFs showed excellent mechanical properties, as the compressive and flexural strength of PF with 4% PCC increased by 79.59 and 20.98%, respectively, in comparison with pristine PF. The pulverization ratio of bio-based PFs was reduced with the increase in PCC content. The findings in this study demonstrate that PCC could be used as a phenol substitute in the synthesis of PFs to overcome their intrinsic brittleness and high flammability.
研究领域:
材料科学
·
化学工程
·
可持续化学
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2024
·Vol. 121
·期 8
·e2317796121
·
IF 9.4
Xuelong Liao,Shan Chen,Jialei Chen,Youzeng Li,Wei Wang,Tiantian Lu,Zhuo Chen,Lixin Cao,Yaxin Wang,Rong Huang,Xiaoting Sun,Runyu Lv,Huan Wang
Tremendous attention has been paid to the water-associated side reactions and zinc (Zn) dendrite growth on the electrode–electrolyte interface. However, the Zn pulverization that can cause continuous depletion of active Zn metal and exacerbate hydrogen evolution is severely neglected. Here, we disclose that the excessive Zn feeding that causes incomplete crystallization is responsible for Zn pulverization formation through analyzing the thermodynamic and kinetics process of Zn deposition. On the basis, we introduce 1-ethyl-3-methylimidazolium cations (EMIm+) into the electrolyte to form a Galton-board-like three-dimensional inert-cation (3DIC) region. Modeling test shows that the 3DIC EMIm+ can induce the Zn2+ flux to follow in a Gauss distribution, thus acting as elastic sites to buffer the perpendicular diffusion of Zn2+ and direct the lateral diffusion, thus effectively avoiding the local Zn2+ accumulation and irreversible crystal formation. Consequently, anti-pulverized Zn metal deposition behavior is achieved with an average Coulombic efficiency of 99.6% at 5 mA cm−2 over 2,000 cycles and superb stability in symmetric cell over 1,200 h at −30 °C. Furthermore, the Zn||KVOH pouch cell can stably cycle over 1,200 cycles at 2 A g−1 and maintain a capacity of up to 12 mAh.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Yue Zhang,Xiangchen Hu,Xingyue Peng,Zetian Qiu,Yining Zhang,Wenbo Zhai,Xinshui Zhang,Ran Wei,Tianyi Gao,Jiameng Yu,Shaojie Chen,Qiong Yuan,Zeyu Wang,Jingyi Yu,Yi Yu,Wei Liu
Anode-free all-solid-state lithium-metal batteries hold promise in energy density. However, they often suffer from rapid capacity decay, and the underlying mechanisms remain unclear, especially at high current densities. Here, failure mechanism is studied systematically for garnet solid electrolyte in Li anode-free all-solid-state batteries. By combining morphology evolution analysis and quantitative assessments, the decreased Coulombic efficiency for solid electrolyte at high current densities is attributed to large amounts of lump-shaped lithium deposits via the electrochemical sintering. The lump-shaped lithium deposits encapsulate numerous voids and solid electrolyte interphase leading to irreversible capacities. Furthermore, serious pulverization of lithium deposits is observed after long cycles. An addition of polydimethylsiloxane membrane is attempted to constrain electrochemical sintering of lithium and compact lithium metal deposits, leading to prolonged cycling performance.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2022
·
IF 7.425
Sijia Yin,Tisong Liang,Shunshan Jiao,Pu Jing
Micronization affects physicochemical and functional properties of materials and hence might improve the quality of rice bran, following stabilization treatments. The micronization effects of stabilized rice bran via extrusion or radio frequency treatments on their morphology and functional properties, and releasable capability were investigated. Micronization reduced particle size, water binding capacity and swelling capacity of rice bran, and increased their whiteness, water solubility index, and nutrient releasability. However, no significant changes in oil binding capacity and thermal index after micronization were observed. Moreover, micronization could decrease the bulk density of rice bran stabilized by extrusion. The releasability of phenolics, flavonoids, γ-oryzanol, and minerals (K, Mg, Zn and Fe) from rice bran after micronization was improved based on in vitro digestion models. These findings suggested that micronization of rice bran following stabilization, especially extrusion treatment, could improve its functional and nutritional properties. The types of stabilization processing of rice bran, followed by micronization, should be considered practically for functional and nutritional properties.
研究领域:
食品科学
·
营养学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）