IONICS
·
2024
·Vol. 30
·期 4
·2019-2028
·
IF 2.4
Chen Long,Zhu Feng,Ma Dongjuan,Liu Yan,Yan Fang,Qiu Jingyi,Cao Gaoping,Zhang Hao
Lithium ion (Li + ) battery with conventional liquid electrolyte has typical and notorious security risk. Composite solid electrolyte integrating the merits of various electrolyte systems is an attractive alternative of liquid electrolyte for new-type safety and long-life lithium (Li) batteries. Herein, a 3D framework composite solid electrolyte based on Al 2 O 3 -modified Li 1.4 Al 0.4 Ti 1.6 (PO 4 ) 3 (Al 2 O 3 @LATP) was prepared by solution casting and scraping method. The 3D framework composite electrolyte exhibits admirable ionic conductivity (1.1 × 10 −4 S cm −1 at 60 °C), wide voltage window (4.8 V vs. Li/Li + ), good thermal stability, and satisfactory electrolyte/electrode interfacial compatibility. The Al 2 O 3 @LATP can not only impede Li dendrite growth, but also avoid the LATP reaction with Li anode. The assembled solid-state LiFePO 4 |Li battery with 3D framework composite solid electrolyte delivers a satisfactory capacity retention up to 95.2% after 400 cycles at 0.5 C and under 60 °C. The 3D framework structural design of solid electrolyte affords a promising option for realizing safe energy storage systems.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Suo Chen,Jie Hou,Xin He,Qingyuan Wang,Wei Wang,Min Zhou,Kangli Wang,Kai Jiang
Manganese-based NASICON-type compounds are promising as high-energy-density cathodes for sodium-ion batteries. However, the structural defects of Mn ions inside the crystal framework reduce the sodium storage capacity, voltage plateau, and cyclic stability of the cathodes. Here, a strategy to inhibit the Mn ion defects of Na4MnCr(PO4)3 has been proposed by using different phosphate sources. It is found that Na4MnCr(PO4)3 prepared with NH4H2PO4 (NMCP-N) exhibits less noticeable voltage hysteresis than that of Na4MnCr(PO4)3 prepared with H3PO4 (NMCP-H), indicating that the site occupation defects of Mn ions in the Na4MnCr(PO4)3 crystal structure are successfully suppressed, as confirmed by theoretical calculations and structural refinements. In the case of NMCP-N, a capacity of 109.7 mAh g–1 is delivered at 0.01 A g–1, and 54.2% capacity retention can be kept after 500 cycles at 0.5 A g–1, which is much better than that of the counterpart of NMCP-H (a lower capacity of 96.1 mAh g–1 and poorer cyclability of only 22.8% capacity retention after 500 cycles), showing that the structure defects strongly affect the sodium storage properties of Na4MnCr(PO4)3 cathodes. This work provides an effective strategy to manipulate the structure defects of Mn-based NASICON-type cathode materials to enhance their electrochemistry.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Kangyi Chen,Qingmo Shi,Yue Wang,Xinghai Li,Yingying Jiang,Haoran Xu,Shilong Guo,Li Zhao,Changsong Dai
A lately proposed NASICON-structured Na 3 MnTi(PO 4 ) 3 (NMTP) provides a promising solution that enables a large theoretical specific capacity and a high voltage discharge platform. However, it encounters a difficulty in electronic conductivity which obstructs its further implements. Herein, in this work we propose the Sodium-ion battery cathode materials Na 3 Mn 1−x Sc x Ti(PO 4 ) 3 /C with different Sc contents (x = 0, 0.01, 0.03, 0.05, 0.07, 0.1), a potential cathode material for sodium-ion batteries with typical three-dimensional NASICON structure were synthesized by sol-gel method aiming to address the problem. Doping of Sc 3+ in the NMTP structure was proved by powder X-ray diffraction and energy dispersive X-ray spectroscopy techniques . Impedance spectroscopy and galvanostatic intermittent titration technique results suggest that appropriate-proportion doping has dramatically enhanced the electrical conductivity and Na ion migration of the NMTP matrix. Na 3 Mn 0.95 Sc 0.05 Ti(PO 4 ) 3 exhibited a higher initial discharge specific capacity (123 mA h /g at 0.2 C, 111 mA h /g at 1 C) and the highest cycling stability (capacity retention of 93% after 250cycles at 0.2 C, capacity retention of 88% after 500 cycles at 1 C). In addition, Electrochemical Impedance Spectroscopy and X-ray diffraction tests revealed the reasons for the improved cycling stability of the materials due to doping. Furthermore, Na 3 Mn 0.95 Sc 0.05 Ti(PO 4 ) 3 //hard carbon full cells also demonstrates ideal electrochemical properties .
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高影响因子
JOURNAL OF POWER SOURCES
·
2015
·
IF 6.217
Zhantao Liu,Xusong Qin,Hui Xu,Guohua Chen
In this study, a one-pot sintering process incorporating sol–gel preparation route and in-situ carbon coating was proposed for the synthesis of carbon-coated nanosized LiTi 2 (PO 4 ) 3 . Experimental results show that the prepared LiTi 2 (PO 4 ) 3 particles are of high crystallinity and well-coated by turbostratic carbon. Attributed to nanosized particles and enhanced conductivity provided by turbostratic carbon coating, the carbon-coated LiTi 2 (PO 4 ) 3 showed high rate performance and good cycling life in aqueous electrolyte. Particularly, the carbon-coated LiTi 2 (PO 4 ) 3 exhibited initial specific capacities of 103 and 89 mAh g −1 , and retained 80.6% and 97% of the initial capacities after 120 cycles at 1C and 10C in aqueous electrolyte, respectively. The high rate performance and good cycling life of carbon-coated LiTi 2 (PO 4 ) 3 in aqueous electrolyte reveal its potential as negative electrode in aqueous lithium-ion batteries for electric vehicles and industrial-scale energy storage systems .
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米技术
·
无机化学
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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
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Huan Yang,Zishuo Ni,Xian Zhang,Qun Li,Zhongnian Yang
N, S co-doped carbon coated 3D porous Mn 0.5 Ti 2 (PO 4 ) 3 was fabricated via fulvic acid pyrolysis. • The carbon layer synergistically enhances electronic conductivity and Li + diffusion kinetics. • The designed composite anode revealed outstanding rate capability. NASICON-structured Mn 0.5 Ti 2 (PO 4 ) 3 (MTP) has emerged as a competitive anode candidate for lithium-ion batteries (LIBs), benefiting from its abundant lattice vacancies, robust structural integrity, and suitable operating voltage. Nevertheless, the practical scalability is constrained by intrinsically low electronic conductivity. Herein, fulvic acid (FA) is employed as a carbon precursor to composite with MTP via high-temperature carbonization, aiming to optimize the electrochemical performance of MTP. Electrochemical tests reveal that the composite with FA/MTP weight ratio of 0.30 carbonized at 800℃ achieves enhanced cycling stability and rate capability, delivering lithiation capacities of 391.4 and 198.9 mAh g −1 at 0.1 and 1.6 A g −1 , respectively. The superior performance is attributed to the formation of uniform N, S co-doped carbon coating layer derived from in-situ carbonization of FA. N, S co-doping not only facilitates rapid electron transport and buffers volume changes during repeated lithiation/delithiation but also introduces additional active sites for lithium storage. Simultaneously, the incorporation of a co-doped carbon layer on MTP improves the binding affinity with MTP, thereby conferring outstanding structural durability and electrical conductivity of the composite. This work provides a simple and effective strategy for utilizing natural biomass derivatives to improve the electrochemical performance of polyanionic compounds for advanced LIB anodes. Download: Download high-res image (150KB) Download: Download full-size image
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Xiangyue Liao,Shuhan Yi,Min Xie,Xiaoying Li,Binghao Lin,Yufan Chen,Yangjie Li,Xuemei He,Qiaoji Zheng,Kwok-Ho Lam,Dunmin Lin
Na3V2(PO4)3 (NVP) is regarded as a promising cathode for sodium-ion batteries (SIBs) owing to its high operating voltage and robust NASICON-type framework. However, its practical application is hindered by poor rate capability and limited long-term cycling stability. In this work, a high-entropy substituted cathode, Na3V1.75(Ca, Zr, Al, Mn, Mg)0.25(PO4)3 (denoted as HE-NVP), is successfully synthesized via a conventional solid-state method. The introduction of multiple aliovalent cations leads to local structural regulation, where elongation of Na(1)–O bonds and contraction of Na(2)–O bonds enhance structural stability and facilitate fast Na+ migration. Simultaneously, the V4+/V5+ redox couple is activated at ∼4.0 V, significantly boosting energy density and cycling stability. High-entropy substitution also promotes pseudocapacitive behavior through the modulation of the local chemical environment and vanadium redox chemistry. As a result, HE-NVP delivers excellent rate performance with a high specific capacity of 93.2 mAh g–1 at 50 C and outstanding long-term durability, retaining 81.8% of its initial capacity after 2,000 cycles at 20 C. Even under harsh conditions of 50 C, it maintains 78% capacity retention after 4,000 cycles, with an ultralow capacity decay rate of 0.006% per cycle after 6,000 cycles. Ex-situ XRD analysis confirms a single-phase solid-solution reaction mechanism with a minimal volume change of only 1.5% during Na+ insertion/extraction. This study highlights a practical and effective strategy for designing high-performance SIB cathodes through rational high-entropy engineering of the crystallographic structure and redox chemistry.
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产品关联
DOI
高影响因子
Energy & Environmental Materials
·
2020
·Vol. 4
·期 2
·208-212
·
IF 0
Jinhang Lv,Ruilin Zheng,Peng Lv,Wei Wei
A solid electrolyte of LAGP [Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 ] contained 0.5 wt% LiF was prepared by using low-volatile raw materials. The effects of different heat treatment conditions (750–900 °C, 4–10 h) and additive (LiF) on the ionic conductivity, structural morphology, and crystal transformation process were investigated in detail. EIS (electrochemical impedance spectroscopies) showed that the ionic conductivity of LAGP contained 0.5 wt% LiF had a highest value of 3.17 × 10 −4 S cm −1 with low activation energy (0.31 eV) after treating 825 °C for 6 h, more than LAGP of 2.45 × 10 −4 S cm −1 . DSC analysis and SEM images indicated that adding a small amount of LiF to LAGP not only can lower the glass transition temperature (from 513 °C to 507 °C) and crystallization temperature (from 622 °C to 605 °C), but also can modify the grain boundary and increase the relative density of LAGP (from 95.8% to 97.7%).
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DOI
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 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
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
危险品化学品经营许可证（带存储）