IONICS
·
2023
·Vol. 29
·期 6
·2271-2285
·
IF 2.8
Yan Ji,Zhu Jiuzhou,Zhang Libo,Li Yan,Wang Heng,Wang Lizhen
Lithium-sulfur batteries present a promising potential in meeting the demand of high energy and low-cost energy storage system. However, it suffers from the severe shuttle effect of lithium polysulfides and sluggish sulfur chemistry kinetics. Herein, NASICON-type ceramic material Na 3 V 2 (PO 4 ) 3 is developed to decorate on polypropylene (PP) membrane as a catalysis layer to adsorb lithium polysulfides and accelerate the conversion of sulfur electrochemistry redox reaction. Meanwhile, the sophisticated architecture on separator provides additional lithium ion intercalaction-extraction behavior, which helps to hamper the shuttle effect of lithium polysulfides. The collaborative contribution of above virtues endows the Li–S batteries with excellent capacitive performance of 1045.3 mA h g −1 at 0.2 C current density, superior rate capability (590.4 mA h g −1 ) at 4 C although the cycling stability over 400 cycles at 4C is still needed to improve. This work offers an elaborate ceramic coating layer engineering on separator to act as an electro-catalyst role to improve the conversion reversibility and kinetics in lithium sulfur battery with high-energy.
研究领域:
储能
·
材料科学
·
电化学
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2012
·Vol. 1
·期 7
·2508-2514
·
IF 0
Jing Su,Xing-Long Wu,Jong-Sook Lee,Jaekook Kim,Yu-Guo Guo
A facile sol–gel approach combined with a carbon-coating technique via high-temperature thermally decomposing C2H2 has been developed for the synthesis of a Li3V2(PO4)3/C (LVP/C) cathode material employing the biomass of phytic acid as an eco-friendly phosphorus source. The effects of the carbon-coating on the structural, morphological and electrochemical properties of LVP have been investigated. Compared with pristine LVP, the LVP/C composite presents a higher discharge capacity of 127 mA h g−1 at 0.1 C, better rate capability and long-term cyclability in the voltage range of 3.0–4.3 V. Even at a high charge–discharge rate of 5 C, it can still deliver a reversible capacity of 107 mA h g−1 over 400 cycles without obvious fading, demonstrating great potential as a superior cathode material for lithium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2018
·Vol. 20
·期 22
·15192-15202
·
IF 3.906
Jinggao Wu,Maowen Xu,Chun Tang,Guannan Li,Hong He,Chang Ming Li
F-Doping effects on polyaniline-derived carbon coated Li3V2(PO4)3 (Li3V2(PO4)3−xFx@C) as a cathode for high performance Li rechargeable batteries are systematically investigated with a combined experimental and DFT theoretical calculation approach. The results clearly indicate that the doping amount has a significant impact on the rate capability and long cycle life. The optimal material (Li3V2(PO4)2.88F0.12@C) delivers 123.16 mA h g−1@2C, which is close to the theoretical value (133 mA h g−1), while showing a greatly improved cycle stability. Rietveld refinements show that the F− doping does not obey Vegard's Law, which may be attributed to the generated lower valence of V ions. AC impedance spectroscopy shows that the F-doping can achieve faster interfacial charge transfer for higher reaction reversibility. DFT calculations confirm that the lower V2+ (t2g↑)3 does exist in Li3V2(PO4)2.88F0.12, and the mean nearest neighbor Li–O bond length also increases for faster electrochemical kinetics, and further reveal that there is a tendency for a transition from the insulator to the n-type semiconductor due to the F dopant. The combined experimental and calculated results suggest that F-doping indeed greatly facilitates the charge transfer rate of the Li+ insertion/de-insertion process for better reversibility and enhances the Li+ diffusion rate to access the reaction sites, thus resulting in high rate capacity and cycling stability. This work not only offers a facile and effective approach to synthesize high performance Li-ion battery material for very promising practical applications, but also discloses scientific insights on element coating and doping to guide the electrode material design for fast electrode kinetics in energy storage devices.
研究领域:
材料科学
·
电化学
·
理论计算
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 2
·620-625
·
IF 3.119
Xianying Fan,Xiaoyu Gao,Xuan Zhang,Guijia Cui,Huichao Lu,Zhixin Xu,Jun Yang
We report a low-cost hydrogel electrolyte by adding 3 wt% poly(acrylate sodium) (PAAS) into 1 M Na2SO4 aqueous electrolyte, which achieves a widened electrochemical stability window (ESW) of 2.45 V on stainless steel current collector from 2.12 V in 1 M Na2SO4 aqueous electrolytes (AE). Moreover, the H2 evolution potential reaches −1.75 V vs. Ag/AgCl on titanium current collector. The results reveal that the polymer network structure of PAAS has the ability to interact with water molecules and thus the hydrogen evolution reaction can be limited effectively, which broadens the ESW of aqueous electrolyte and allows the reversible Na-ion intercalation/deintercalation of Na3V2(PO4)3 as an anode material in aqueous electrolyte reported for the first time.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Hongxia Chen,Yutian Yang,Rihuang Nie,Cheng Li,Shuangwu Xu,Mengcheng Zhou,Xinyu Zhang,Hongming Zhou
Na 3 V 2 (PO 4 ) 3 has been widely studied due to its stable three-dimensional transmission channel structure as a cathode electrode of sodium ion batteries , but its micro particle size and low intrinsic electronic conductivity limit its further development. Therefore, hierarchical porous micro-nano NVP/C materials were successfully prepared using a metal-organic frameworks (MOFs) precursor. Because of the unique hierarchical porous micro-nano structure, 3D highly conductive network between surface and particles, and high specific surface area, M-NVP/C exhibits outstanding rate capability (95.0 mAh g −1 at a current density of 10 C) and extraordinary stable cycle life (the capacity decays from 111.2 mAh g −1 to 108.8 mAh g −1 after 500 cycles at 1 C, with a capacity retention rate of 97.8 %). This method provides a promising pathway for the application of MOFs in battery materials and promotes the development of SIBs in large-scale energy storage systems.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL COMMUNICATIONS
·
2017
·Vol. 53
·期 11
·1805-1808
·
IF 6.319
Jin Han,Guan-Nan Li,Feng Liu,Minqiang Wang,Yan Zhang,Linyu Hu,Chunlong Dai,Maowen Xu
Novel K3V2(PO4)3 and three-dimensional conductive network K3V2(PO4)3/C nanocomposites are successfully fabricated and further evaluated as cathode materials for potassium-ion batteries for the first time. The K3V2(PO4)3/C nanocomposite exhibits a high-potential platform of 3.6–3.9 V and a good capacity retention of at least 100 cycles. This work may provide new insight into developing cathode materials for potassium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yazhou Chen,Chen Li,Dezhan Ye,Yunfeng Zhang,Haifeng Bao,Hansong Cheng
Polymer electrolytes with single ion conducting behavior, high ion conductivity and fire-resistant play a vital role in suppressing lithium dendrite growth for high security, stability and high energy density of rechargeable lithium metal batteries (LMBs). Herein, we develop a gel single-ion composite electrolyte (SICE) by incorporating Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 nanoparticles into alternating diblock lithiated bis(benzene sulfonyl)imide polyanion with repeating ether groups. Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 nanoparticles can significantly endow SICE membrane more Li + transportation channels, which offers elevated ionic conductivity (8.3 × 10 −4 S cm −1 ) and Li + transference number (0.93) to promote homogenously Li + deposition in lithium foil for dendrite suppression. As a result, a highly reversible Li plating/stripping in a Li symmetric cell enables to run stably for at least 1600 h at 0.5 mA cm −2 . Furthermore, Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 nanoparticles increases the electrochemical window of SICE up to 4.6 V (vs. Li + /Li), meanwhile enhances the thermal stability and fire-resistance, and promotes fast electrolyte wetting. Accordingly, a single-ion conducting LiFePO 4 /Li cell assembled with optimized SICE membrane endowed a high capacity retention of 92.9% after 800 cycles at 1 C, superior to the commercial LiPF 6 /PP system. This work paves a scalable and deployable way for design of advanced single-ion conducting electrolyte membranes to develop secure and stable LMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xiangyu Han,Jiaqi Wang,Yongguang Liu,Lei Dai,Ling Wang,Shan Liu
All-solid-state sodium-ion batteries (ASSIBs) with inorganic solid electrolytes can achieve high safety and high energy density when paired with a high-voltage cathode. However, the slow charge transfer and chemical instability between the high-voltage cathode and rigid electrolyte seriously restrict its development. Herein, a high energy density Na4MnCr(PO4)3-based ASSIBs have been achieved by using a simple low-temperature brazing strategy. The in situ generated secondary phase can not only achieve close contact and rapid charge transfer between the Na4MnCr(PO4)3 cathode and electrolyte but also change the interface electric field distribution and reduce interface side reactions effectively. This strategy is simple and easy to implement and has important guidance for the development of other high-energy all-solid-state batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemSusChem
·
2022
·Vol. 15
·期 19
·e202201121
·
IF 9.14
Dong Yan,Shuhao Xiao,Xinyan Li,Rui Wu,Jinxia Jiang,Xiaobin Niu,Jun Song Chen
Graphical Balancing act : Boron-doped Na 3 V 2 (PO 4 ) 3 is synthesized through a facile electrospinning method. NVP@carbon with a balanced content of BCO 2 and BC 2 O exhibits the best sodium storage properties. BC 2 O mainly improves the sodium diffusion and BCO 2 enhances the structural stability. Na 3 V 2 (PO 4 ) 3 (NVP) is a widely studied cathode material for sodium-ion batteries because of its high ionic conductivity and attractive charge/discharge plateau (3.4 V vs. Na/Na + ). However, its poor electronic conductivity and severe volume expansion during sodium storage need to be addressed before its intensive application could be realized. Herein, boron-doped NVP was synthesized through a facile electrospinning method. By adding boric acid into the reaction mixture during electrospinning followed by carbonization, boron could be directly inserted into the carbon matrix, giving rise to B-doped carbon nanofiber wrapped NVP. By tuning the doping amount, the boron-containing configurations could be facilely manipulated, playing different roles in promoting the sodium storage properties of the composite. Based on the calculation results, BC 2 O enhanced sodium diffusion by lowering the energy barrier, while BCO 2 improved the structural stability. Due to these specific functionalities of the configurations, the as-prepared composite with a balanced amount of BC 2 O and BCO 2 demonstrated superior sodium storage capacity of 113 mAh g −1 at 1 C, outstanding long cycling performance of 103 mAh g −1 at 10 C, and retained 91 mAh g −1 after 1500 cycles. This gave rise to a capacity loss of only 0.08‰ per cycle, much better than the undoped counterpart.
研究领域:
材料科学
·
能量存储
·
纳米技术
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Sustainable Energy & Fuels
·
2025
·
IF 4.1
Yitao Hui,Xianhe Meng,Aobo Yue,Qi Shen,Bingyu Liu,Nengjun Yu,Qiaoling Kang,Lijing Yan,Chubin Wan,Tingli Ma
Na superionic conductors (NASICONs) have attracted much attention due to their unique framework structure and high capacity. However, the poor intrinsic electron conductivity severely limits further development. This work develops a soft-hard carbon composite modified Na3V2(PO4)3 (NVP) cathode with excellent rate performance and long-term cycling stability. The optimized sample exhibits excellent electrochemical performance and can release a specific discharge capacity of 102.7 mAh g-1 at 1 C rate. At the same time, after 5000 cycles at 20 C rate, the discharge capacity can reach 82.3 mAh g-1, and the capacity retention rate is 100.1 %. The morphological characteristics of the NVP/C samples were investigated, Meanwhile, combined with Raman spectroscopy and electrochemical analysis, these results revealed that the synergistic interaction between soft and hard carbon components significantly enhances electronic conductivity and facilitates rapid ionic transport. This work provides a unique idea for the surface modification and synthesis of NASICON cathode materials for sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机固体化学
·
纳米材料
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Peng Wei,Yanxiang Liu,Yarui Su,Ling Miao,Yangyang Huang,Yi Liu,Yuegang Qiu,Yuyu Li,Xiaoyu Zhang,Yue Xu,Xueping Sun,Chun Fang,Qing Li,Jiantao Han,Yunhui Huang
We are presenting a sol–gel method for building novel nanostructures made of nanosized F-doped Na1–2xTi2(PO4)3–xFx (NTP-Fx, x = 0, 0.02, 0.05, and 0.10) particles embedded in three-dimensional (3D) carbon matrices (NTP-Fx/C). This technique combines advantages of both zero-dimensional materials and 3D-carbon networks. Proper fluorine doping stabilizes the NTP structure and greatly enhances ion/electron transportation, leading to superhigh-rate electrochemical performance and ultralong cycle life. The composite electrode delivers high specific capacities of 121, 115, 112.2, 110.1, 107.7, 103.1, 85.8, and 62.5 mA h g–1 at 0.2, 0.5, 1, 2, 5, 10, 20, and 30 C, respectively. It retains an unbelievable ∼70% capacity after a thousand cycles at a rate as high as 10 C. Electroanalytical results reveal that fluorine doping significantly enhances Na+ diffusion kinetics. Meanwhile, density functional theory calculations demonstrate F-doped NTPs’ own outstanding electrochemical properties, which is due to the enhanced intrinsic ionic/electronic conductivity. The results show that anion doping is an efficient way to make high-performance NTP anodes for sodium-ion batteries.
研究领域:
电化学
·
材料科学
·
能源存储
·
纳米材料
·
固态化学
·
电化学储能
✓ 已验证
DOI
高影响因子
MATERIALS LETTERS
·
2018
·
IF 2.687
Xi Cao,Yang Yang
NASICON-structured NaTi 2 (PO 4 ) 3 is regarded as the most suitable anode for aqueous sodium ion batteries, however, the low electronic conductivity intrinsically restricts its application. NaTi 2 (PO 4 ) 3 -carbon composite is prepared by a facile solid state sintering method and studied as the anode in aqueous sodium ion battery , coupling with activated carbon as the cathode. This neutral sodium ion battery shows a high output voltage of 1.17 V, with outstanding rate and cycling stability. The full cell delivers an energy density of 33.4 Wh∙kg −1 at a power density of 33.4 W∙kg −1 based on the total active mass of the anode and cathode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）