ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Kai Chen,Yanping Tang,Shuqing Zhang,Xuxia Hao,Xiaoning Zhao,Li-Qian Cheng,Youxuan Xiao,Zhaoyin Wen
Sulfide all-solid-state lithium battery (ASSLB) with nickel-rich layered oxide as the cathode is promising for next-generation energy storage system. However, the Li+ transport dynamic and stability in ASSLB are hindered by the structural mismatches and the instabilities especially at the oxide cathode/sulfide solid electrolyte (SE) interface. In this work, we have demonstrated a simple and highly effective solid-state mechanofusion method (1500 rpm for 10 min) to combine lithium conductive NASICON-type LiZr2(PO4)3 nanocrystals (∼20 nm) uniformly and compactly onto the surface of the single crystallized LiNi0.8Co0.1Mn0.1O2, which can also attractively achieve Zr4+ doping in NCM811 and oxygen vacancies in the LZPO coating without solvent and annealing. Benefiting from the alleviated interface mismatches, sufficient Li+ ion flux through the LZPO coating, promoted structural stabilities for both NCM811 and sulfide SE, strong electronic coupling effect between the LZPO and NCM811, and enlarged (003) d-spacing with enriched Li+ migration channels in NCM811, the obtained LZPO-NCM811 exhibits superior stability (185 mAh/g at 0.1C for 200 cycles) and rate performance (105 mAh/g at 1C for 1300 cycles) with high mass loading of 27 mgNCM/cm2 in sulfide ASSLB. Even with a pronounced 54 mgNCM/cm2, LZPO-NCM811 manifests a high areal capacity of 9.85 mAh/cm2. The convenient and highly effective interface engineering strategy paves the way to large-scale production of various coated cathode materials with synergistic effects for high performance ASSLBs.
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Zepeng Zhang,Qi He,Jie Lu,Qinghua Xu,Yehan Tao,Jian Du,Haisong Wang,Yingjuan Fu
The capability and longevity of lithium-ion batteries (LIBs) are heavily influenced by simultaneously increasing the lithium-ion extraction/insertion dynamics and enhancing the construction stabilization of Li 3 V 2 (PO 4 ) 3 (LVP) positive electrode material. With the goal to improve the battery's stability, fermentation residues rich in functional groups that contain oxygen might be wrapped around LVP. This is the first time, to our knowledge, that high-performance LVP cathode materials have been created utilizing leftover fermentation waste as a carbon source. More crucially, due to the promoted invertible V 3+ /V 4+ redox conjugate pair created by oxygen groups coinciding with the improved Li + dynamics properties, the top-performing material generated an excellent primal discharging capability of 131.9 mA h/g (approaching the projected performance) at 0.5 C. Additionally, after 500 cycles, the improved battery exhibits higher capacity retention of 95%.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Xianli Song,Haitao Zhang,Danfeng Jiang,Lipeng Yang,Jiahe Zhang,Meng Yao,Xiaoyan Ji,Gongying Wang,Suojiang Zhang
Solid-state batteries , which exhibit characteristics including uniform Li deposition, non-flammability and low interfacial resistance, are desirable for novel energy storage devices. Herein, a self-standing, fireproof and electrochemically stable organic-inorganic composite ionogel electrolyte was carefully designed and prepared by using polymerized ionic liquid (PIL), ionic liquid (IL), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium aluminum titanium phosphate (LATP) nanoparticles . The incorporation of LATP nanoparticles into polymer backbone was found to facilitate ionic transport due to the homogenous Li + distribution, which would further boost the ionic conductivity and mechanical properties. In addition, the introduction of IL favored the reduction of interface resistance. Benefiting from the nonflammability, the thermal shrinkage performance of as-prepared electrolyte could stand over a broad operating temperature range. A Li/Li symmetric cell containing optimized PIL-14 wt% LATP could be cycled steadily for over 2000 h at 50 °C. A lithium metal battery containing composite ionogel electrolyte exhibited an outstanding specific capacity of 145 mAh g −1 and 95% capacity retention at 50 °C even after 100 cycles. This study indicates that the co-employment of IL and inorganic nanoparticle is an effective strategy for the construction of organic-inorganic hybrid electrolytes for high-safety solid-state lithium metal batteries (LMBs).
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Szu-Chi Chao,Yen-Shen Kuo,Pei-Xuan Chen,Yi‐Hung Liu
To enhance energy density and secure the safety of lithium-ion batteries, developing solid-state electrolytes is a promising strategy. In this study, a composite solid-state electrolyte (CSE) composed of poly(vinylidene difluoride) (PVDF)/cellulose acetate (CA) matrix, lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt, and Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) fillers is developed via a facile solution-casting method. The PVDF/CA ratio, LiTFSI, and LATP fractions affect the crystallinity, structural porosity, and thermal and electrochemical stability of the PVDF/CA/LATP CSE. The optimized CSE (4P1C-40LT/20F) presents a high ionic conductivity of 4.9 × 10 -4 S cm −1 and a wide electrochemical window up to 5.0 V vs. Li/Li + . A lithium iron phosphate-based cell containing the CSE delivers a high discharge capacity of over 160 mAh g −1 at 25 °C, outperforming its counterpart containing PVDF/CA polymer electrolyte. It also exhibits satisfactory cycling stability at 1C with approximately 90 % capacity retention at the 200th cycle. Additionally, its rate performance is promising, demonstrating a capacity retention of approximately 80 % under varied rates (2C/0.1C). The increased amorphous region, Li + transportation pathways, and Li + concentration of the 4P1C-40LT/20F CSE membrane facilitate Li + migration within the CSE, thus improving the battery performance.
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Yudi Guo,Jiaming Li,Erqing Zhao
Sc and B doping enlarges the electrolyte lattice and reduces grain boundaries. • The LASBTP003 electrolyte shows an optimal ionic conductivity of 0.882 mS/cm. • PVDF-HFP-LITFSI-SN-10LASBTP003 SCE displays enhanced electrochemical performance. • Li/SCE/ LiFePO 4 full cell shows an excellent long-term cycling stability. NASICON-type Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), with excellent air stability, a wide electrochemical window and low cost, is an attractive electrolyte for lithium-ion batteries (LIBs). However, its low electrical conductivity and poor interface contact impede its practical applications. Herein, LATP was doped with Sc and B elements, and the properties of the resultant LATP-based solid electrolytes were thoroughly studied. The structural characterization suggests that doping of Sc and B densifies the electrolyte structure, enlarges the lattice, and reduces grain boundaries. The optimized Li 1.3 Al 0.24 Sc 0.03 B 0.03 Ti 1.7 (PO 4 ) 3 (LASBTP003) achieves a high ionic conductivity of 8.82 × 10 −4 S/cm, equivalent to 4-fold that of pure LATP. The composition of LASBTP003 electrolyte with PVDF-HFP and SN results in PVDF-HFP-LITFSI-SN-LASBTP003 solid composite electrolyte with enhanced ionic conductivity of 8.89 × 10 −5 S/cm, attributed to the reduced PVDF-HFP crystallization and established lithium-ion migration pathways at LASBTP003/PVDF-HFP interface. PVDF-HFP-LITFSI-SN-10LASBTP003 also displays a wide electrochemical window of 4.85 V and a high Li-ion transference number of 0.41. The Li/ PVDF-HFP-LITFSI-SN-10LASBTP003/Li symmetric battery delivers a long cycling of 1800 h under a current density of 0.1 mA/cm 2 . Moreover, LiFePO 4 /PVDF-HFP-LITFSI-SN-10LASBTP003/Li full cell delivers a long-term cycling stability, with a capacity retention of 86.92% after 1000 cycles at 0.5C. Overall, the proposed PVDF-HFP-LITFSI-SN-10LASBTP003 has great potential for LIB applications. Download: Download high-res image (195KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Small
·
2025
·Vol. 21
·期 32
·2503471
·
IF 12.1
Rui Du,Changcheng Liu,Que Huang,Shengnan He,Chao Zheng,Li Guo,Yanjun Chen
For Na 3 V 2 (PO 4 ) 3 (NVP) cathode, the activity and utilization rate of Na and V is the key to affecting its electrochemical properties. However, few studies can simultaneously optimize both. Currently, a facile hydrothermal route is proposed to successfully synthesize the honeycomb-like porous NVP@CHSLS cathodes possessing anchoring effects to enhance the immobilization of active Na/V through in situ carbonation with chitosan and sodium lignosulfonate. DFT calculations demonstrate the N/S co-doped carbon skeleton gains more electrons and behaves with superior charge transfer capability. Accordingly, XAFS verifies the existence of hypervalent V 4+ for the charge balance, as well as a newly generated C-N-V bond inside the bulk, which significantly inhibits the dissolution of V in the electrolyte. Moreover, ex-situ and after-cycled XRD verifies beneficial electrochemical intermediums such as Na 2 S manifest extra sodium fixation characteristics, which not only enter into the CEI membrane to reduce the loss of Na + , but also participate in the de-intercalation of Na + . Furthermore, honeycomb-like porous morphology enriches the active sites for Na + migration and improves the wettability of electrolytes, demonstrated by contact Angle and AFM tests. Consequently, the optimized NVP@CHSLS-2 reveals a high postactivated capacity of 104.5 mAh g −1 at 60 C, and it remains at 98.8% after 10 000 cycles at 60 C.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Physics
·
2022
·
IF 11.021
Jiarong He,Tao Tao,Fan Yang,Zhipeng Sun,Haitao Huang
Sodium-ion batteries (SIBs) are regarded as promising candidates for large-scale stationary energy storage systems because of the high abundance of Na resources. Na superionic conductor polyanionic cathode (NASICON), such as Na 3 (VO 1-x PO 4 ) 2 F 1+2x (0 ≤ x ≤ 1, NVPF 1+2x ) and Na 3 V 2 (PO 4 ) 3 (NVP), shows intriguing electrochemical performances due to their robust open structure and superior cycle stability. Inspired by phase manipulation and conductive reduced graphene oxide (rGO) incorporation, a hierarchical NVPF 1+2x @NVP core-shell structure is elaborately synthesized and conformally wrapped by rGO via a facial microwave-assisted hydrothermal approach. F-free surface of NVPF 1+2x @NVP particle possesses intimate contact with rGO framework without strong mutual repulsive force while conductive rGO endows NVPF 1+2x @NVP with high electronic conductivity to ensure fast electron transport . Combining the synergistic effect between delicate design of core-shell structure and conductive rGO framework, the NVPF 1+2x @NVP/rGO-600 °C electrode achieves a high discharge capacity of 105.9 mAh g −1 at 0.5 C with an impressive capacity retention of 99.1% after 200 cycles, delivering an excellent rate capability of 90.6 mAh g −1 at 10 C. Moreover, the NVPF 1+2x @NVP/rGO-600 °C electrode possesses an alleviated polarization, small impedance and fast electron/Na + diffusion properties due to this synergistic effect. The full cell using NVPF 1+2x @NVP/rGO-600 °C cathode and hard carbon (HC) anode shows an initial discharge capacity of 80.0 mAh g −1 at 0.2 C and rate capability of 45.2 mAh g −1 at 10 C, which could light an LED lamp and manifest its prospective application. Our findings provide new insights into a broadly applicable material design combining morphological phase manipulation with conductive rGO framework incorporation, which synergistically boosts the electrochemical performance of NASICON cathode towards advanced SIBs with a higher energy density , faster charging rate and more practical applications.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）