ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Zhihua Zhang,Shaojie Chen,Jing Yang,Gaozhan Liu,Xiayin Yao,Ping Cui,Xiaoxiong Xu
The severe instability with lithium (Li) anode of NASICON-structure Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) solid-state electrolyte (SSE) greatly hinders its practical applications in the all-solid-state lithium batteries (ASSLBs) with high energy density and safety. In order to alleviate this issue, here we employed an artificial protective layer of LAGP glass on the surface of ceramic LAGP sheet to construct a surface amorphized electrolyte via a spin-coating co-sintering method. AC impedance test and galvanostatic charge-discharge cycling of Li/electrolytes/Li symmetrical cell suggest that enabled by this glass layer, the surface amorphized LAGP can exhibit better compatibility with Li anode. In addition, with a poly(ethylene oxide) polymer electrolyte in the cathode side , at 0.1 C under 60 °C, the LiFePO 4 /Li ASSLB using surface amorphized LAGP can keep stable for 120 cycles with a retention of 93.6%, which is more than 13 times of the cell using ceramic LAGP (6.9%). The formation mechanisms of unstable interphases in LAGP/Li interface were briefly summarized, and probable reasons behind the good compatibility between and LAGP glass and Li were discussed.
研究领域:
材料科学
·
电化学
·
储能技术
·
固态电池
·
陶瓷材料
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Shujiao Yang,Zhihua Zhang,Lin Shen,Peng Chen,Zhi Gu,Mingyuan Chang,Yue zhao,Hao He,Xiayin Yao
An asymmetric solid polymer electrolyte (ASPE) is designed as two-in-one layered structure driven by gravity and in-situ polymerization. The rigid layer composed of polymer embedded three-dimensional continuous Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) framework improves the Li + transference number and critical current densities. The soft poly(ethylene glycol) (PEG) layer prepared via thermal polymerization by poly(ethylene glycol) methyl ether methacrylate (PEGMEM) makes good interfacial contact with cathodes. Driven by gravity, the two layers are automatically stratified during the polymerization. By virtue of this structural merit, the Li + transference number of PEG@LAGP ASPE extends to 0.144 (vs. 0.083 of PEG SPE), and symmetric Li/PEG@LAGP ASPE/Li cells can stably cycle over 400 h at current density of 0.5 mA cm −2 under 60 °C. LiFePO 4 /PEG@LAGP ASPE/Li cell exhibits excellent electrochemical performance at 2.5 C (0.5 mA cm −2 ) under 60 °C, reaching to a maximum specific capacity of 130.8 mA h g −1 and a capacity retention of 87.2% after 1000 cycles. Furthermore, the cells operating at high rates or high temperatures also have been demonstrated. This work provides a promising electrolyte design strategy for all-solid-state batteries with superior interface compatibility and long cycle life.
研究领域:
材料科学
·
电化学
·
储能技术
·
高分子科学
·
电池技术
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Kunqi Liu,Junxia Wang,Jin Wang,Long Kang,Jun Li,Die Liu,Yuan Liu,Qing Tao
To explore the application potential of ceramic waste forms for immobilizing multiple nuclides in high-level waste, a systematic study was conducted on (1- x )Sr 0.5 Zr 2 (PO 4 ) 3 - x Ce 0.5 Sm 0.5 PO 4 ( x = 0, 0.5, and 1) ceramics, focusing on their chemical and irradiation stability. The composite ceramics can simultaneously immobilize multiple nuclides (Sr, Ce, and Sm), while retaining a homogeneous microstructure and high relative density (>97%). Static leaching experiment indicated low normalized leaching rates: LR Sr ∼ 10 -4 -10 -3 g·m -2 ·d -1 , LR Ce ∼ 10 -8 -10 -7 g·m -2 ·d -1 , and LR Sm ∼ 10 -7 -10 -6 g·m -2 ·d -1 . Different leaching behaviors of nuclides (Sr, Ce, Sm) were further identified using the de Groot and van der Sloot model. With 5 MeV Xe 20+ irradiation at a fluence of 2.5×10 15 ions/cm 2 , Sr 0.5 Zr 2 (PO 4 ) 3 phase in the composite ceramics can still maintain part of its crystal structure, while Ce 0.5 Sm 0.5 PO 4 phase tends to amorphize. Interestingly, subsequent TEM observation further vitrificated the Xe 20+ -induced amorphous Ce 0.5 Sm 0.5 PO 4 phase recrystallizes under electron-beam (e-beam) irradiation.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Yang Xia,Liyue Yu,Chengwei Lu,Jing Zhu,Zhen Xiao,Jun Zhang,Chu Liang,Hui Huang,Yongping Gan,Wenkui Zhang
Monoclinic Li 3 V 2 (PO 4 ) 3 (LVP) fulfills safety requirements including superior chemical and thermal stabilities since the oxygen atoms are firmly anchored in PO 4 3− units, however the low intrinsic electronic conductivity strictly limits its electrochemical performance . Herein, to overcome this problem, a rationally designed passion fruit-like LVP@C/CNT composite constructed with LVP grains as seeds, carbon matrix as pulp, and carbon nanotubes (CNTs) as filaments, has been prepared via a facile spray pyrolysis method. In such unique biomimetic structure, carbon matrix encases LVP to reduce its particle size, which is beneficial to shorten ion pathways; Porous structure scattered around carbon matrix facilitates the rapid penetration of electrolyte; 3D CNT networks afford high-speed electron conduction and remarkable structural stability by forming the bridges between LVP grains. Owing to the multiple merits of this biomimetic structure, the rationally designed LVP@C/CNT composite with 3 wt% CNT exhibits high reversible capacity, superior cyclic stability and remarkable rate capability.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米复合材料
·
锂离子电池
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yingmin Jin,Chaojun Liu,Zhenggang Jia,Xin Zong,Dong Li,Mengyu Fu,Junhua Wei,Yueping Xiong
Solid-state electrolytes have become a promising approach for rechargeable lithium batteries with enhanced safety and high energy density . However, the rigid nature of ceramic electrolytes would result in the poor interfacial contact, and polymer electrolytes suffer from inferior electrochemical performance and unsatisfied mechanical strength to suppress Li dendrites. In this work, we report a flexible Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP)-reinforced polyvinylidene fluoride (PVDF)-based solid composite electrolyte with superior performances in terms of high ionic conductivity (1.64 × 10 −3 S cm −1 at room temperature), high lithium transference number (0.45), wide electrochemical window (0–4.76 V) and enhanced tensile strength (14.2 MPa). The existence of LATP permits the utilization of high Li-salt content which increases the charge carrier concentration. Meanwhile, LATP facilitates the Li + conduction process and enhances the mechanical strength, leading to a long-term electrochemical stability of symmetric Li cell for 600 h at 0.2 mA cm −2 . Assembled with LiFePO 4 cathode, the all-solid-state Li battery delivers a high capacity of 153.7 mA h g −1 at 0.3 C with remarkable cycle stability. This work provides a bright future for composite polymer electrolytes in the application of all-solid-state lithium batteries .
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子科学
·
无机非金属材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Qing Zhu,Jinxin Wu,Rui Tong,Wenhao Li,Xiuli Hu,Ningchen Tian,Liqing He,Yanwei Li,Zhenyu Wang
Na 4 MnCr(PO 4 ) 3 (NMCP) has been considered as one kind of privileged cathodes with high energy density for sodium ion batteries (SIBs) due to three-electron redox reaction during the insertion/extraction process. Nevertheless, its practical use is restricted by its low intrinsic conductivity and serious Jahn-Teller distortions. Herein, a facile doping strategy was presented to address the above issues, and the effects of different kinds and quantities of transition metal dopants on electrochemical performance of NMCP were systemically studied. The results reveal that Ni50-NMCP/C has the most effective doping composition, showing a discharge capacity of 143.0 mAh g −1 at 50 mA g −1 and long-term cyclic stability with capacity retention of 55.7 % at 1000 mA g −1 over 500 cycles, higher than those of the pristine NMCP (106.6 mAh g −1 at 50 mA g −1 and 38.8 % capacity retention at 1000 mA g −1 ). The substitution of Ni 2+ for Mn 2+ promotes electron conductivity and structural stability, rendering improved electrochemical performance. Moreover, the promising electrochemical performance of Ni50-NMCP/C//HC full cell demonstrates the anode's potential for use. This study indicates a quick way to understand the effects of elemental doping on NMCP and explore novel high energy and high stability cathodes for SIBs.
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DOI
高影响因子
Journal of Central South University
·
2022
·Vol. 29
·期 9
·2980-2990
·
IF 2.392
Wang Zhen-yu,Li Cong,Huang Ying-de,He Zhen-jiang,Yan Cheng,Mao Jing,Dai Ke-hua,Zheng Jun-chao
With increasing demand on energy density of lithium-ion battery, wide electrochemical window and safety performance are the crucial request for next generation electrolyte. Gel-electrolyte as a pioneer for electrolyte solidization development aims to solve the safety and electrochemical window problems. However, low ionic conductivity and poor physical performance prohibit its further application. Herein, a fast-ionic conductor (Li 2.64 (Sc 0.9 Ti 0.1 ) 2 (PO 4 ) 3 ) (LSTP) was added into poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) base gel-electrolyte to enhance mechanical properties and ionic conductivity. Evidences reveal that LSTP was able to weaken interforce between polymer chains, which increased the ionic conductibility and decreased interface resistance during the cycling significantly. The obtained LiFePO 4 /hybrid gel-electrolyte/Li-metal coin cell exhibited excellent rate capacity (145 mA·h/g at 1 C , 95 mA·h/g at 3 C , 28 °C) which presented a potential that can be comparable with commercialized liquid electrolyte system.
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产品关联
DOI
高影响因子
IONICS
·
2020
·Vol. 26
·期 12
·6049-6056
·
IF 2.394
Ren Yaqi,Deng Hao,Zhao Hong,Zhou Zheng,Wei Zhaohuan
A simple and effective method was developed and used to improve the conductivity and density of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 solid–state electrolyte. The raw powders were synthesized through two different methods to expand the particle size distribution, which could improve the sintered density and the grain boundary connection of the of LATP electrolyte. Through this method, the relative density of the electrolyte made of mixed powders can reach to 97% compared with the 92% and 95% for electrolyte made of single solid-state reaction powder and sol-gel reaction powder, respectively. The conductivity test shows that this electrolyte has high total ion conductivity of 5.23 × 10 −4 S cm −1 at room temperature with the grain boundary conductivity of 6.11 × 10 −4 S cm −1 . With the merits of high density and ion conductivity, this solid-state electrolyte shows good rate capability and cycle performance in aqueous lithium-oxygen batteries.
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Guijia Cui,Hong Wang,Fengping Yu,Haiying Che,Xiaozhen Liao,Linsen Li,Weimin Yang,Zifeng Ma
NASICON-type Na 3 V 2 (PO 4 ) 3 is a promising electrode material for developing advanced sodium-ion batteries. Preparing Na 3 V 2 (PO 4 ) 3 with good performance by a cost-effective and large-scale method is significant for industrial applications. In this work, a porous Na 3 V 2 (PO 4 ) 3 /C cathode material with excellent electrochemical performance is successfully prepared by an agar-gel combined with freeze-drying method. The Na 3 V 2 (PO 4 ) 3 /C cathode displayed specific capacities of 113.4 mAh·g −1 , 107.0 mAh·g −1 and 87.1 mAh·g −1 at 0.1 C, 1 C and 10 C, respectively. For the first time, the 500-mAh soft-packed symmetrical sodium-ion batteries based on Na 3 V 2 (PO 4 ) 3 /C electrodes are successfully fabricated. The 500-mAh symmetrical batteries exhibit outstanding low temperature performance with a capacity retention of 83% at 0 °C owing to the rapid sodium ion migration ability and structural stability of Na 3 V 2 (PO 4 ) 3 /C. Moreover, the thermal runaway features are revealed by accelerating rate calorimetry (ARC) test for the first time. Thermal stability and safety of the symmetrical batteries are demonstrated to be better than lithium-ion batteries and some reported sodium-ion batteries. Our work makes it clear that the soft-packed symmetrical sodium ion batteries based on Na 3 V 2 (PO 4 ) 3 /C have a prospect of practical application in high safety requirement fields.
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Kunqi Liu,Junxia Wang,Jin Wang,Die Liu,Long Kang,Haiyuan Wei,Junjun Zhou
In this study, the 500 keV He–ion irradiation effects were systematically analyzed in Sr 0.5 Zr 2 (PO 4 ) 3 –Ce 0.5 Sm 0.5 PO 4 composite ceramics used for nuclear waste form. The phase evolution was investigated at various ion doses of 1 × 10 16 , 1 × 10 17 , and 5 × 10 17 ions/cm² using GIXRD, Raman. Meanwhile, the irradiation effects at various depths of 100 nm, 1500 nm and 3000 nm in the typical sample with an ions dose of 5 × 10 17 ions/cm 2 were further observed through FIB–TEM and SEM. The results indicated that Sr 0.5 Zr 2 (PO 4 ) 3 phase transitioned from crystalline to amorphous state, while Ce 0.5 Sm 0.5 PO 4 phase exhibited crystalline–disorder transition. Furthermore, the microscopic strain changes of both post–irradiated phases were assessed by a geometric phase analysis (GPA) method, which revealed that Sr 0.5 Zr 2 (PO 4 ) 3 phase accumulated more lattice stress than Ce 0.5 Sm 0.5 PO 4 phase. Ultimately, this study confirmed that the irradiation resistance of Sr 0.5 Zr 2 (PO 4 ) 3 phase under He–ion irradiation was inferior to that of Ce 0.5 Sm 0.5 PO 4 phase.
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Yanyan Kong,Jiaxiang Sun,Ligang Gai,Xiaojuan Ma,Jianhua Zhou
Aqueous rechargeable batteries (ARBs) based on migration of two types of shuttle ions not only enrich the battery families but also make it more available for ARBs with operation potential higher than 1.2 V. In this paper, we report on electrochemical properties of ARBs in configuration of NaTi 2 (PO 4 ) 3 /C||LiMn 2 O 4 , i.e. NTP/C||LMO. NTP/C was prepared through a simple and scalable co-precipitation post annealing treatment method and featured with hierarchical structure, high specific surface area, and abundant mesopores. The electrochemical properties of individual anode and cathode were examined in 1 mol L −1 Li 2 SO 4 , 1 mol L −1 Na 2 SO 4 , and 0.5 mol L −1 Li 2 SO 4 /0.5 mol L −1 Na 2 SO 4 mixed electrolyte, respectively. It is found that NTP/C exhibits superior operation in 1 mol L −1 Na 2 SO 4 and inferior operation in 1 mol L −1 Li 2 SO 4 while the situation is contrary for LMO. However, NTP/C||LMO full cells with Li + /Na + -mixed electrolyte exhibit enhanced electrochemical performance, presenting an anode-dependant electrochemical behavior. When operating at 1C, NTP/C||LMO with Li + /Na + -mixed electrolyte can deliver a discharge specific capacity ( C dis ) of 104.6 mA h g −1 based on the weight of NTP/C, and a specific energy ( E cell ) of 59.5 W h kg −1 with corresponding specific power of 76.8 W kg −1 based on the total weight of active electrode materials. After 220 cycles at 1C, the C dis and E cell remain 75.7 mA h g −1 and 43.0 W h kg −1 , respectively.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 27
·13950-13956
·
IF 8.867
Yanan Xu,Chang Xu,Qinyou An,Qiulong Wei,Jinzhi Sheng,Fangyu Xiong,Cunyuan Pei,Liqiang Mai
Novel NASICON-type carbon-coated LiTi2(PO4)3 microflowers (LTP-F/C) as a hybrid magnesium–lithium-ion battery (MLIB) cathode is presented for the first time. Benefiting from the synergistic effect of the NASICON structure, nanosheet-constructed hierarchical architecture, and uniform carbon coating of LTP-F/C, this hybrid MLIB exhibits extraordinary electrochemical performance: ultra-high cycling stability (capacity retention of 80% after 3000 cycles at 10 C) and outstanding rate capability (94 mA h g−1 at 20 C) under a high discharge voltage plateau of ∼1.71 V (vs. Mg/Mg2+). This hybrid battery system design is highly promising for large-scale energy storage applications.
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DOI
高影响因子
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