Russian Journal of Physical Chemistry A
·
2025
·Vol. 99
·期 2
·327-337
·
IF 0.8
Liping Zhao,Zhao Ye,Zhao Lihe,Du Juan,Deng Xia,Wu Xueyan,Subinuer,Liu Gang,Yao Cen,Shen Lu,Xie Haiming
An internal resistance heating method was proposed to control the operating temperature of Li-ion batteries to address rapid performance degradation under low temperature conditions. Main research content: (a) Preparation and process optimization of PTC (positive temperature coefficient) effects materials: Using micrometer nickel powder as the conductive material and polypropylene/polyvinylidene fluoride (PP/PVDF) as the polymer matrix. The polymer matrix was mixed with the conductive material using high-temperature melting method. The PTC materials with a transition temperature below 40°C were prepared through controlling the preparation process repeatedly and meticulously, and the optimal preparation process was determined. (b) Performance testing and analysis of PTC materials: The thermal analysis, volume change analysis, structure and micro-structure analysis were conducted through resistivity temperature curve, tensile performance, SEM and thermal expansion testing, respectively. The influence of conductive material content, heat treatment temperature, heat treatment time on the performance of PTC materials was systematically studied. (c) “Self heating Battery” assembly and performance study: A self heating Li-ion battery was assembled and its electrochemical performance was tested systematically. The results showed that the low-temperature discharge performance of the battery was significantly improved. This work can help improve the low-temperature performance of Li-ion batteries and expand its application areas.
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DOI
高影响因子
Small Methods
·
2019
·Vol. 4
·期 2
·1900753
·
IF 0
Jipeng Liu,Liwei Dong,Dongjiang Chen,Yupei Han,Yifang Liang,Mengqiu Yang,Jiecai Han,Chunhui Yang,Weidong He
Metal oxides are arguably a promising solution to next-generation high-energy-density anode materials. In particular, molybdenum oxides own high theoretical specific capacity (1117 and 838 mA h g −1 for MoO 3 and MoO 2 , respectively), high chemical stability, and low cost. The low electronic conductivity of MoO 3 limits their charge–discharge rate performances and delithiation capability. By controlling the valence state of MoO x with carbon, partial MoO 3 can be reduced to MoO 2 with low electrical resistance and high-rate capacity. Nonetheless, both molybdenum oxides undergo large-volume expansion/shrinkage and even pulverization in the lithiation/delithiation process. Herein, through a facile pyrolysis method a MoO x /N-doped carbon nanotube (NCNT) anode with controllable valence states of Mo is designed. The high conductivity and flexibility of the NCNT matrix form a stable MoO 2 /MoO 3 anode with finely matched lattices and coordinated 3d electrons. Owing to molecularly close contact between electron-rich CNTs and MoO x , MoO x /NCNTs own a high conductivity of 0.36 S cm −1 , and mitigate the volume expansion in charges and discharges. The MoO 3 /MoO 2 /NCNTs anode delivers an unparalleled high gravimetric capacity of 970 mA h g −1 , over 100-cycle stability and high rate capability.
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Small
·
2024
·Vol. 20
·期 47
·2404452
·
IF 13
Long Zhang,Tao Ma,Peng-Hu Zhou,Yi-Wen Yang,Lei-l. Lu,Bi-Cheng Hu,Shu-Hong Yu
Aqueous rechargeable lithium-ion batteries (ARLIBs) are extensively researched due to their inherent safety, typical affordability, and potential high energy density. However, fabricating ARLIBs with both high energy density and power performance remains challenging. Herein, based on cyanoethyl-modified bacterial cellulose nanofibers (CBCNs), a multifunctional fast ion transport framework is developed to construct the flexible free-standing ARLIBs with high areal loading and excellent rate performance. Benefiting from the unique merits of CBCNs, such as ultra-high aspect ratio, excellent toughness, superior adhesion, good lithiophilicity and ideal stability, the flexible free-standing and highly robust electrodes are fabricated and exhibit a long-term stable cycling of 1200 cycles with a high specific capacity of 117 mAh∙g −1 at 15 C. Remarkably, the corresponding full cell with the free-standing high mass loading (45.5 mg∙cm −2 ) electrodes under the condition of ultra-low addition of battery binder demonstrates a cycle lifespan of over 1000 cycles with a specific capacity of 120 mAh∙g −1 and a capacity decay as low as 0.03% per cycle, which is far superior to those of almost all previous reports. This work provides a strategy for constructing ARLIBs with high energy density and power performance by introducing a unique fast ion transport nanofiber framework.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhiwen Lei,Jinlai Shen,Jun Wang,Qi Qiu,Guangzhao Zhang,Shang-Sen Chi,Hongli Xu,Shuai Li,Weide Zhang,Yusheng Zhao,Yonghong Deng,Chaoyang Wang
The stable structure, high porosity and surface functionality endow metal organic frameworks (MOFs) nanoparticles as excellent nanofillers for high-performance poly (ethyleneoxide)-based solid polymer electrolytes (PEO SPEs). However, the agglomeration of MOFs severely limits their potential applications. Herein, a novel zeolitic imidazolate framework-90 nanofiller grafted with imidazole ionic liquid containing siloxane groups (ZIF-90-g-IL) is prepared by dehydration condensation reaction, which enables the uniform distribution of the nanofiller in PEO SPEs. The resulting composite PEO SPE with ZIF-90-g-IL nanofillers delivers higher ionic conductivity of 1.17 × 10 -4 S/cm at 30 °C and lithium ion transference number of 0.44, wider electrochemical stability window of 4.8 V, and stronger ability to inhibit lithium dendrite growth than the PEO SPE with unmodified ZIF-90. The strong interaction of ZIF-90-g-IL with PEO is caused by the chelation of quaternary ammonium cations of ionic liquid groups on the ZIF-90-g-IL surface with oxygen containing a lone pair of electrons of PEO, resulting in a uniform distribution of the nanofillers in PEO. The LFP||Li half cells with the PEO/ZIF-90-g-IL SPE exhibit good cycling performance with 71% capacity retention (101 mAh g −1 ) after 500 cycles at 2C under 60 °C, and show excellent cycling performance with 97.4% capacity retention (148 mAh g −1 ) after 30 cycles at 0.1C under 30 °C. The composite SPE is also used for high-voltage NCM811||Li half cells. The capacity retention is 63% (99 mAh g −1 ) after 100 cycles at 0.1C under 60 °C. The results imply ZIF-90-g-IL as effective nanofillers for SPEs showing a great potential application in all solid-state lithium metal batteries.
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Nan Meng,Fang Lian,Luetao Wu,Yue Wang,Jingyi Qiu
Composite electrolytes have been accepted as the most promising species for solid-state batteries, exhibiting the synergistic advantages of solid polymer electrolytes (SPEs) and solid ceramic electrolytes (SCEs). Unfortunately, the interrupted Li+ conduction across the SPE and SCE interface hinders the ionic conductivity improvement of composite electrolytes. In our study on a ceramic-rich composite electrolyte (CRCE) membrane composed of borate polyanion-based lithiated poly(vinyl formal) (LiPVFM) and Li1.3Al0.3Ti1.7(PO4)3 (LATP) particles, it is found that the strong interaction between the polyanions in LiPVFM and LATP particles results in a uniform distribution of ceramic particles at a high proportion of 50 wt % and good robustness of the electrolyte membrane with a Young’s modulus of 9.20 GPa. More importantly, ab initio molecular dynamics simulation and experimental results demonstrate that Li+ conduction across the SPE and SCE interface is induced by the polyanion-based polymer due to its high lithium-ion transference number and similar Li+ diffusion coefficient with the SCE. Therefore, the unblocked Li+ conduction among ceramic particles dominates in the CRCE membrane with a high ionic conductivity of 6.60 × 10–4 S cm–1 at 25 °C, a lithium-ion transference number of 0.84, and a wide electrochemical stable window of 5.0 V (vs Li/Li+). Consequently, the high nickel ternary cathode LiNi0.8Mn0.1Co0.1O2-based batteries with CRCE deliver a high-rate capability of 135.08 mAh g–1 at 1.0 C and a prolonged cycle life of 100 cycles at 0.2 C between 3.0 and 4.3 V. The polyanion-induced Li+ conduction across the interface sheds new light on solving composite electrolyte problems for solid-state batteries.
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高影响因子
Materials Reports: Energy
·
2024
·
IF 0
Han Wang,Sidra Jamil,Muhammad Fasehullah,Shujuan Bao,Yi Li,Maowen Xu
Lithium-sulfur (Li-S) batteries are one of the most promising energy storage and conversion devices due to the high theoretical capacity and cost-effectiveness of sulfur. However, they still suffer from sluggish redox kinetics and the shuttle effect caused by complex polysulfides. In this work, graphitic carbon nitride (g-C 3 N 4 ) is utilized as a template and further hydrothermally treated with an Mn source and glucose. The pyrolysis of g-C 3 N 4 gives rise to N-doped carbon nanotubes, producing abundant sites for physical confinement and chemical adsorption of polysulfides, while glucose carbonization brings forth amorphous carbon and Mn source produces metal spheres. Afterward, polydopamine (PDA) induces N-doped carbon coating and promotes interface connection as well as electron immigration. This synergistic design possesses a high surface area of micropores and mesopores to aggregate sulfur and accelerate redox kinetics. As a result, the N-doped carbon nanotube with Mn spheres and PDA coating@sulfur (CN/Mn-PDA@S) exhibits a high reversible capacity of 813.5 mAh g −1 at 1 C with a decay rate of 0.064% per cycle and remarkable capacity retention at 2 C with rate performance up to 4 C. Therefore, the novel design of N-doped carbon nanotubes with Mn spheres and PDA coating serves as an efficient polysulfide immobilizer for Li-S batteries.
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ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Chunhai Jiang,Jingxia Wang,Zhonghui Chen,Zhiyang Yu,Zhenyu Lin,Zhimin Zou
Hierarchical nitrogen-doped carbon spheres (NCSs) prepared by annealing the MnO 2 -templated spherical polypyrrole (PPy) at 450 or 600 °C were tested as anode materials of Li-ion batteries. The NCSs annealed at 450 °C exhibited higher nitrogen content, more amorphous carbon structure, and lower surface area as compared to the sample annealed at 600 °C. The specific capacities and rate performances of both NCSs samples were much higher than that of commercial mesocarbon microbeads (MCMBs). The NCSs annealed at 600 °C exhibited higher capacity at low current density (<0.5 A g −1 ) but more rapid capacity decay at elevated current rates referring to the sample annealed at 450 °C. The NCSs annealed at higher temperature also possessed inferior cycling stability, possibly due to its lower electronic conductivity and higher degree of graphitization. A high specific capacity of 250.8 mAh g −1 was achieved on the NCSs annealed at 450 °C at 3 A g −1 , demonstrating their high potentiality as anode of high power Li-ion batteries.
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高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Ruihan Zhang,Maochun Wu,Xinzhuang Fan,Haoran Jiang,Tianshou Zhao
Currently, lithium-sulfur (Li-S) batteries still suffer from fast capacity decay, poor coulombic efficiency (CE) and short cycling lifespan, which result from the severe shuttle effect issue caused by high solubility and rapid diffusion of lithium polysulfides (LiPSs) in organic electrolytes. Here, yolk-shell zinc oxide (YS-ZnO) spheres are synthesized and for the first time, applied as a host for Li-S batteries to tackle this challenge. The polar ZnO exhibits high chemical anchoring ability toward LiPSs while the unique yolk-shell structure not only provides an additional physical barrier to LiPSs but also enables much more uniform sulfur distribution, thus significantly suppressing LiPSs shuttling effect meanwhile promoting sulfur conversion reactions. As a result, the YS-ZnO enables the Li-S battery to display an initial specific capacity of 1355 mAh g −1 and an outstanding capacity retention capability (~89.44% retention rate) even after 500 cycles with the average CE of ~99.46% at the current of 0.5 C. By contrast, the capacity of conventional-ZnO-nanoparticles based battery severely decays to 472 mAh g −1 after cycling for 500 times. More impressively, the S/YS-ZnO based Li-S battery can maintain a low decay rate of 0.040% every cycle and high average CE of 98.82% over 1000 cycles at 3 C.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
YuChen Wu,JiaJia Li,ZhiTeng Wang,Chao Wan,Zhiqiang Liu,Zhenhe Zhu,HuiXin Lan,Hui Li
Tin-based anodes exhibit high capacities, rendering them suitable for lithium-ion batteries (LIBs). However, their practical use is hindered by their extreme swelling and rapid fading. Moreover, traditional synthesis methods for SnP 2 O 7 , which is a promising tin-based system, involve several limitations such as toxic solvents, complex procedure, high energy consumption, and hazardous phosphorus reagents. Herein, we overcame these limitations using a simple method involving a deep eutectic solvent based on polyethylene glycol and SnCl 4 ·5 H 2 O. Phytic acid serves as a benign phosphorus source and a chelating agent that locks Sn 2 + /Sn 4+ into a rigid Sn–O–P scaffold. The special properties of the material mitigate the structural damage caused by lithium-ion deintercalation during charging and discharging. SnP 2 O 7 /C retains 729 mAh g −1 after 300 cycles at 0.2 A g −1 (retention = 99.4 %) and 515 mAh g −1 after 1000 cycles at 1 A g −1 , considerably surpassing those of SnO 2 /C and SSS/C(Sn 3 (PO 4 ) 2 / SnP 2 O 7 / SnO 2 ). The proposed synthesis method is cost-effective, scalable, and green. Moreover, the main mechanism of this route, i.e., phytic acid chelation, offers a long-lasting solution to the long-standing problems of tin-based anode materials for LIBs.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2025
·Vol. 172
·期 1
·010529
·
IF 3.3
Kemeng Song,Yuan Yuan,Hanbing Chen,Ping Lu,Ning Li,Ningyi Yuan,Fanglei Zeng
This study presents a systematic investigation of three cyclic phosphazene-based flame retardant additives, hexachlorocyclotriphosphazene (HCCP), hexafluorocyclotriphosphazene (HFPN), and ethoxy-pentafluorocyclotriphosphazene (EtPFPN), for ether-based electrolytes in lithium-sulfur batteries. Through comprehensive analysis of molecular orbital calculations, self-extinguishing time measurements, and electrochemical characterization, we reveal distinct structure-dependent flame retardancy mechanisms and their impact on battery performance. HCCP demonstrates superior flame suppression through P-Cl bond decomposition but exhibits electrochemical instability above 15 wt%. HFPN functions primarily as a co-solvent, achieving significant flame retardancy above 20 wt% while maintaining stable electrochemical performance. EtPFPN emerges as the most promising candidate, effectively integrating into the electrolyte solvation structure to provide optimal flame retardancy, though requiring higher concentrations for complete suppression. Notably, synergistic effects between LiNO3 and the flame-retardant additives enhance both safety and electrochemical stability. These findings provide critical insights for the molecular design of flame-retardant electrolytes in high-performance Li-S batteries, demonstrating the importance of balancing safety enhancement with electrochemical stability through strategic additive selection and concentration optimization.
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jianxiong Xing,Tao Chen,Zihao Wang,Zhicui Song,Chaohui Wei,Qijiu Deng,Qiang Zhao,Aijun Zhou,Jingze Li
Lithium (Li) metal anode (LMA) is one of the most promising anodes for high energy density batteries. However, its practical application is impeded by notorious dendrite growth and huge volume expansion. Although the three-dimensional (3D) host can enhance the cycling stability of LMA, further improvements are still necessary to address the key factors limiting Li plating/stripping behavior. Herein, porous copper (Cu) foam (CF) is thermally infiltrated with molten Li-rich Li-zinc (Li-Zn) binary alloy (CFLZ) with variable Li/Zn atomic ratio. In this process, the LiZn intermetallic compound phase self-assembles into a network of mixed electron/ion conductors that are distributed within the metallic Li phase matrix and this network acts as a sublevel skeleton architecture in the pores of CF, providing a more efficient and structured framework for the material. The as-prepared CFLZ composite anodes are systematically investigated to emphasize the roles of the tunable lithiophilicity and hierarchical structure of the frameworks. Meanwhile, a thin layer of Cu-Zn alloy with strong lithiophilicity covers the CF scaffold itself. The CFLZ with high Zn content facilitates uniform Li nucleation and deposition, thereby effectively suppressing Li dendrite growth and volume fluctuation. Consequently, the hierarchical and lithiophilic framework shows low Li nucleation overpotential and highly stable Coulombic efficiency (CE) for 200 cycles in conventional carbonate based electrolyte. The full cell coupled with LiFePO 4 (LFP) cathode demonstrates high cycle stability and rate performance. This work provides valuable insights into the design of advanced dendrite-free 3D LMA toward practical application.
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DOI
PubMed
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Wujie Ge,Yuanxiang Fu,Chaonan Wang,Lirong Yan,Qi Feng,Bing Yan,Xiang Li
The high-nickel cathode material LiNi 0.865 Co 0.095 Al 0.04 O 2 (NCA) has garnered significant attention due to its high energy density and cost-effectiveness in production. However, this material is also prone to rapid capacity degradation, primarily due to phase transitions occurring during the redox process. In this paper, the co-modification with Na and B cations is employed to stabilize the lattice structure and enhance the electrochemical performance of the NCA material. It can be found that the incorporation of Na and B cations in the lattice can reduce cation mixing, expand the Li-layer spacing and improve crystal stability, thereby increasing the specific capacity and cyclic stability of the NCA material. Specifically, the co-doped NCA-2 sample exhibits a specific capacity of 202.1 mAh/g at 0.1 C and maintains a capacity retention of 78.75 % at 1 C after 300 cycles, representing a substantial improvement over the pristine material (187.2 mAh/g and 61.68 % capacity retention). Moreover, at a current density of 10 C, the co-doped NCA-2 sample demonstrates a high specific capacity of 133.9 mAh/g, compared to 110.1 mAh/g for the pristine material. The Na/B co-doping strategy presented in this study offers a straightforward method to improve the cyclability and rate behavior of cathode materials, highlighting its potential for commercial applications.
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DOI
高影响因子
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