ADVANCED FUNCTIONAL MATERIALS
·
2016
·Vol. 26
·期 37
·6797-6806
·
IF 11.382
Yue Ma,Reza Younesi,Ruijun Pan,Chenjuan Liu,Jiefang Zhu,Bingqing Wei,Kristina Edström
Pulverization of electrode materials and loss of electrical contact have been identified as the major causes for the performance deterioration of alloy anodes in Li-ion batteries. This study presents the hierarchical arrangement of spatially confining silicon nanoparticles (Si NPs) within graphene foam (GF) for alleviating these issues. Through a freeze-drying method, the highly oriented GF monolith is engineered to fully encapsulate the Si NPs, serving not only as a robust framework with the well-accessible thoroughfares for electrolyte percolation but also a physical blocking layer to restrain Si from direct exposure to the electrolyte. In return, the pillar effect of Si NPs prevents the graphene sheets from restacking while preserving the highly efficient electron/Li + transport channels. When evaluated as a binder-free anode, impressive cycle performance is realized in both half-cell and full-cell configurations. Operando X-ray diffraction and in-house X-ray photoelectron spectroscopy confirm the pivotal protection of GF to sheathe the most volume-expanded lithiated phase (Li 15 Si 4 ) at room temperature. Furthermore, a free-standing composite film is developed through readjusting the pore size in GF/Si monolith and directly integrated with nanocellulose membrane (NCM) separator. Because of the good electrical conductivity and structural integrity of the GF monolith as well as the flexibility of the NCM separator, the as-developed GF/Si-NCM electrode showcases the potential use in the flexible electronic devices.
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高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 10
·期 6
·2907-2916
·
IF 12.732
Qiyu Wang,Xiangqun Xu,Bo Hong,Maohui Bai,Jie Li,Zhian Zhang,Yanqing Lai
Quasi-solid-state lithium metal batteries hold great potential for use in next generation energy systems due to their high energy capacity and safety. However, these systems still suffer from incompatible interphases and limited cycling performance due to Li dendrite growth. Considering this, nonpolar triallyl cyanurate with a ring-centred –CN coupled structure with pentaerythritol tetraacrylate as a cross-linking agents was applied in the in situ synthesis of gel polymer electrolyte (GPE). The GPE displays high ionic conductivity (7.93 mS cm−1) at room temperature and high stability towards a Li metal anode. Furthermore, the micro-electric field created by triallyl cyanurate (TAC) after polymerization provides uniform adsorption sites for Li+ flow and induces even distribution, which ensures a long cycling life (700 cycles) with a capacity retention of 80.6% for a LiFePO4|GPE|Li battery at 1C. The design of the polymer skeleton provides new insights into solid-state battery optimization different from the intrinsic properties of the electrolyte. This polymeric electrolyte also allows for new opportunities to practically manufacture lithium metal batteries.
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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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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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高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.7
Zunqiu Xiao,Huaying Wang,Ningyuan Cai,Yutong Li,Kejia Xiang,Wei Wei,Tao Ye,Zhongtai Zhang,Shitong Wang,Zilong Tang
Anti-perovskite materials such as Li 2 (OH)Cl have garnered considerable interest as solid electrolytes due to their numerous advantages. However, the low ionic conductivity of the orthorhombic Li 2 (OH)Cl near room temperature presents a significant challenge for the application. In this study, we intricately modulate the −OH content in Li 2 (OH)Cl through a controlled heat treatment process. This method effectively increases the cubic phase content and lowers the phase transition temperature, thereby enhancing the ionic conductivity at 30 °C by more than an order of magnitude. Theoretical calculations illustrate that the removal of −OH content significantly reduces the barrier for phase transition, leading to substantial alterations in the Li-ion transport pathway and migration barrier. Furthermore, LiHClO-600 demonstrates exceptional resistance to lithium reduction and is compatible with lithium metal and LiFePO 4 , rendering it a viable solid electrolyte for batteries. Both experimental findings and theoretical calculations cohesively highlight the pivotal role of −OH content in driving phase transition and facilitating Li-ion transport in anti-perovskite solid electrolytes, paving the way for their potential utilization in all-solid-state batteries.
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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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高影响因子
Journal of Environmental Sciences
·
2025
·
IF 6.3
Wei Jia,Jianxun Bao,Hebi Zhang,Min Wu,Jianbei Qiu,Hao Wu,Yingjie Zhang
Halide perovskite materials have received considerable attention for solar cells, LEDs, lasers etc. owing to their controllable physicochemical properties and structural advantages. However, little research has focused on energy storage and conversion applications, such as use as anodes in lithium-ion batteries. In this paper, all-inorganic lead-free halide perovskite Cs 3 Bi 2 Cl 9 powders were synthesized by the grinding method, and the lattice was successfully adjusted via introducing Mn 2+ . The characterization results show that Mn-ion substitution can cause local lattice distortion to restructure the lattice, which will cause a mixed arrangement of [BiCl 6 ] octahedra to improve the performance of the anode material. This new material can provide a feasible solution for solving the problem of low specific capacity anode materials caused by unstable crystal structures, and also indicates that such perovskites with unique crystal structures and lattice tunability have broad application prospects in lithium-ion batteries.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Qian-Cheng Zhu,Shu-Jian Li,Jie Ma,Fu-Li Zhang,De-Yu Mao,Hai Li
The Li–CO 2 battery, capable of both efficient carbon dioxide fixation and high energy density storage, holds promise in mitigating the greenhouse effect and alleviating mileage anxiety. However, the volatilization/leakage problems of the conventional electrolytes and the dendrites crisis of lithium anode seriously affect the battery life. The replacement of the organic electrolyte with a solid one is a feasible method to solve the above problems. Till now, the poor interface contact between solid electrolyte and electrode restricts the Li + ions transport kinetics in discharge/charge cycles. Herein, we apply a solution casting method to prepare a flexible polymer/ceramic composite electrolyte. With the combination of high Li + ions conductivity ceramic filler of Zn-doped Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) and Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) active additive, the crystallization of polyvinylidene fluoride (PVDF) and poly (ethylene oxide) (PEO) is suppressed, thus efficiently enhancing the room temperature Li + ions conductivity (8.32 × 10 −4 S cm −1 ) of the composite electrolyte. The Li–CO 2 battery with the solid-state electrolyte exhibits a high discharge capacity (32,842 mAh g −1 ) and long stable cycles (over 220 cycles). The polymer/ceramic composite electrolyte design presents a novel approach to realizing solid-state Li–CO 2 batteries with long-term cycling performance.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yuyun Li,Qingfeng Liu,Wanquan Yu,Chenchen Li,Zitong Fei,Qi Meng,Peng Dong
The wide application of LiFePO 4 (LFP) batteries in energy storage equipment inevitably produces a large number of spent LFP batteries. However, the existing direct regeneration technology usually only pays attention to the compensation of Li + , ignoring the problems of poor conductivity, binder residue, and slow compensation channels of Li + in spent LFP. Here, we introduce a direct, efficient, and environmentally sustainable regeneration method of spent LFP cathodes, which utilizes argon plasma ball milling to effectively decompose the residual binder on the surface, induce the construction of vacancies in the carbon layer, and broaden the Li + compensation channels. Through argon plasma ball milling pretreatment, the Fe (III) phase can be more effectively transform into the Fe (II) phase during the calcination stage, achieving structural repair of spent LFP. The regenerated LFP exhibits excellent electrochemical performance, with the discharge capacity of 142.9 mAh g −1 at 1C, with no significant capacity loss after 200 cycles, and nearly 100 % capacity retention after 500 cycles at 5C. Economic analysis indicates that the proposed regeneration method offers significant economic benefits and low energy consumption, providing a novel reference for the efficient direct regeneration of spent lithium-ion batteries.
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高影响因子
Scientific Reports
·
2025
·Vol. 15
·期 1
·1-14
·
IF 3.9
Liu Liming,Lian Hongxia,Deng Heming,Zhang Weixin
Challenges associated with the cathode material of Lithium–oxygen (Li–O 2 ) battery, particularly the sluggish kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction, as well as the accumulation of discharge product Li 2 O 2 , have hindered its further advancement. Here, an in-situ synthesis strategy was adopted to load a bimetallic Ni–Co metal–organic framework (Ni/Co-MOF) onto MXene (Ti 3 C 2 ) layers. Subsequently, a free-standing and flexible Ni/Co-MOF@Ti 3 C 2 hybrid membrane is prepared via a layer-by-layer self-assembly method, specifically designed for efficient ORR and as a cathode for Li–O 2 batteries. The Ni/Co-MOF@Ti 3 C 2 hybrid membrane integrates the high conductivity, unique two-dimensional layered structure, and excellent mechanical properties of Ti 3 C 2 with the bimetallic active sites of Ni/Co-MOF, exhibiting remarkable ORR catalytic activity in an O 2 -saturated 1 M LiTFSI electrolyte. The structural characteristics of the hybrid membrane provide smoother expansion pathways for Li + and O 2 , effectively promoting the deposition and decomposition of Li 2 O 2 . This not only enhances the electrochemical performance of the Li–O 2 battery but also overcomes the inherent limitations of traditional slurry-based cathode preparation methods. Experimental results demonstrate that Li–O 2 batteries utilizing the Ni/Co-MOF@Ti 3 C 2 hybrid membrane as the cathode achieve an ultra-high capacity of 36,125 mAh/g at a current density of 1000 mA/g, while exhibiting excellent cycle stability (271 cycles with a limited capacity of 1000 mAh/g at 1000 mA/g) and outstanding rate performance. The hybrid membrane’s capacity and cycle performance can be further optimized by controlling its thickness. These promising results offer novel insights into the innovative design of air cathodes for metal–air batteries, and the proposed method provides a new route for the manufacture of high-performance battery cathodes.
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PubMed
高影响因子
Nano Energy
·
2021
·
IF 17.881
Yaoyao Li,Yuanpeng Liu,Lanxin Xue,Wei Chen,Tianyu Lei,Anjun Hu,Jianwen Huang,Xuepeng Wang,Xianfu Wang,Bo Chen,Yin Hu,Chengtao Yang,Jie Xiong
Lithium metal batteries (LMBs) have great potential for next-generation rechargeable batteries due to the high theoretical capacity and ideal compatibility coupled with diverse cathode materials . However, the random Li deposition associated with the large local space charge caused by the anion depletion near the surface of anode, as well as the insufficient reduction of Li + related to the suppressed Li + solvation process induced by the electrostatic force between anion and cation hinder the development of high-energy-density LMBs. Herein, as evidenced theoretically and experimentally, we simultaneously eliminate the anion depletion region and promote the lithium salt dissociation by employing ZIF-67 with unsaturated metal sites as anionphilic additive to regulate anion distribution and weaken its bond with Li + . As a result, the short-circuit hazard is remitted in symmetrical cell with modified electrolyte at 3 mA cm −2 under capacity of 3 mAh cm −2 for more than 2000 h. As employed for the lithium-sulfur battery with high sulfur loading of 4.5 mg cm −2 , the modulated electrolyte enables the battery delivering an initial capacity of 713 mAh g −1 with decay rate of 0.05% per cycle over 100 cycles at 3 mA cm −2 . This work demonstrates an efficient and scalable strategy for constructing dendrite-free LMBs via eliminating the anion depletion region and facilitating the Li + solvation process.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Ying Jiang,Xu Chu,Jie Li,Feilong Dong,Qianmai Qiao,Luze Cai,Jun Liu,Haiming Xie
Li metal anode suffers from poor interfacial stability and safety hazards in liquid electrolytes. Designing stable interface on Li metal and replacing liquid electrolytes are critical ways to develop high-energy-density lithium metal batteries (LMBs). In this paper, a superior MgF 2 -containing interface was first studied, and an interface-derived high-performance solid polymer electrolyte (SPE) was prepared by a facile solution casting method. A LiF-rich interface containing Mg atoms is in-situ generated by the reaction between MgF 2 and metallic Li, which simultaneously enhances the interfacial stability and endows dendrite-free Li deposition, enabling the Li metal anodes to realize long-term stable cycling even at 5C (3.04 mA cm −2 ) in commercial carbonate electrolytes. The interface-derived SPE has high room-temperature (RT) ionic conductivity, Li-ion transference number, excellent interfacial compatibility and stability due to the existence of MgF 2 . Under the joint action of stable interface and high-performance SPE, the all-solid-state LMBs can exhibit ultra-stable cycling with high coulombic efficiencies under RT. This work provides a guideline for the development of superior interfaces and high-performance SPEs by learning from each other.
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