SOLID STATE IONICS
·
2017
·
IF 2.354
Zhi Zhou,Yiran Li,Mao Xia,Nan Zhou
In this paper, Li 1–x Ti 2 (PO 4 ) 3 /C composites (x = 0, 0.03, 0.05, 0.07) were synthesized by sol-gel approach, and the influence of Li vacancy on electrochemical performance of LiTi 2 (PO 4 ) 3 /C anode for aqueous rechargeable lithium battery was studied. Li vacancy hardly influences the crystal structure and morphology of the composite. Electrochemical measurement results demonstrated that Li 1–x Ti 2 (PO 4 ) 3 /C exhibited better performance compared with pristine LiTi 2 (PO 4 ) 3 /C, and Li 0.95 Ti 2 (PO 4 ) 3 /C has the best properties. Li 0.95 Ti 2 (PO 4 ) 3 /C delivered the discharge capacity of 104.3, 92.6, and 71.8 mAh g − 1 at 0.2, 5, and 20 C (1 C = 150 mA g − 1 ), 4.1, 27.3, and 34.4 mAh g − 1 larger than that of Li 0.95 Ti 2 (PO 4 ) 3 /C at corresponding rates, respectively. After 1000 cycles at 5 C, the discharge capacity retention for Li 0.95 Ti 2 (PO 4 ) 3 /C can reach 75.3%, 15.4% larger than that for LiTi 2 (PO 4 ) 3 /C. Our study reveals that Li vacancy is an efficient method to enhance the electrochemical properties of LiTi 2 (PO 4 ) 3 -based materials.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Lingchen Wang,Guowei Xiong,Zichang You,Jun Jin,Mengli Xiao,Huayan Huang,Fangfang Xu,Zhaoyin Wen
The development of solid-state lithium metal batteries (SSLBs) faces challenges like high interfacial resistance, volume fluctuations, and lithium dendrite growth. This work employs a template method to in situ construct a three-dimensional (3D) metallic nanonetwork with mixed ionic/electronic conductivity (MIEC) on Ta-doped LLZTO solid electrolyte. This structure not only remains stably anchored at the LLZTO interface but also exhibits excellent electronic conductivity, enabling a more uniform electron distribution across the heterogeneous interface. Benefiting from this interfacial design, the lithium symmetric cells achieve a high critical current density (CCD) of 1.5 mA cm–2 and stable cycling for 3000 h at 0.5 mA cm–2 and maintain robust performance for more than 100 h at 1.0 mA cm–2. The assembled full cells exhibit exceptional electrochemical performance, and this method provides a paradigm for interfacial structural design in SSLBs.
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DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yuanguo Wu,Jiaqi Wang,Xingbao Zhu,Zhihong Wang,Xiqiang Huang,Zhe Lv
The progress in energy storage technology has primarily focused on practical applications, necessitating straightforward fabrication, economical materials, and scalable manufacturing. In this work, we demonstrate a facile method to prepare highly self-catalytic cathodes for lithium‑oxygen batteries (LOBs) using bacterial cellulose (BC) as a precursor. The BC-derived cathodes (CBC) retain both the fibrous structure and oxygen-functional groups of the original biomass, producing a material with a modest appearance but outstanding electrochemical properties. The oxygen-functional groups incorporated into the carbon framework exhibit synergistic catalytic effects, enabling an unprecedented discharge capacity of 33,900 mAh g −1 at 200 mA g −1 , significantly outperforming most reported cathodes. An integrated oxygen-selective membrane, formed via a facile silicone oil coating process, resulting in stable cycling at current densities up to 1000 mA g −1 and continuous operation for over 240 h in ambient air when coupled with a hybrid polymer electrolyte, highlighting its practical viability. Furthermore, the eco-friendly and self-catalytic CBC represents an innovative “three-in-one” electrode design, simultaneously providing a 3D conductive network, efficient catalytic centers, and selective oxygen transport capabilities, all crucial features for next-generation energy storage systems.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Renwei Zhang,Qinmao Wu,Ping Hu,Mingwei Hu,Jianbin Zheng,Mingdeng Wei,Yafeng Li
Li-rich Mn-based layered oxides (LRMOs) are promising high-energy-density cathode materials for lithium-ion batteries due to their unique anionic/cationic redox mechanisms. However, a series of serious issues including irreversible oxygen release, structural degradation and sluggish kinetics significantly hinder their practical applications. Herein, a dual-functional B/Al co-doping strategy was proposed to synergistically address these challenges. It was found that the robust B − O and Al − O bonds can effectively stabilize the structural framework, mitigating irreversible oxygen release and phase transitions. Concurrently, B-doping optimized Li + transport channels while co-doping induced the formation of surface oxygen vacancies, thereby enhancing Li + transport kinetics. Based the synergistic effects, the electrochemical properties of LRMOs have been improved. As a result, Li 1.2 Mn 0.56 Ni 0.2 B 0.02 Al 0.02 O 2 cathode delivered an initial capacity of 256.8 mAh g −1 at 0.1C and retained 85.1 % of capacity after 500 cycles at 1C, which are much better than pristine and single-doped counterparts. Moreover, the voltage decay rate has been minimized to 0.96 mV cycle −1 , demonstrating an exceptional structural reversibility. Thus, such a work highlights the critical role of synergistic cation co-doping in balancing structural stability and ion transport, offering a viable pathway for developing high-energy and long-life Li-rich cathodes.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Xiaodie Zhao,Anyang Yu,Tian Jiang,Qi Fan,Pingping Sun,Qingyu Xu
Tailoring the crystalline structure and facet orientation of T-Nb2O5 anode electrodes is pivotal for optimizing the Li+ transport kinetics. Herein, a crystallization engineering strategy is employed to synthesize urchin-like T-Nb2O5 microspheres composed of single-crystalline whiskers growing along the (001) orientation. These whiskers are characterized by nearly 100% exposed vertical (001) facets that accelerate Li+ diffusion. Furthermore, the remaining N3– expands the interlayer spacing, which optimizes Li+ transport pathways. Benefiting from these synergetic effects, abundant ion entry and exit sites with smooth ion transport channels promote the rapid Li+ diffusion in the T-Nb2O5 microspheres, delivering a high capacity and improving the rate performance (324 mAh g–1 at 0.05 A g–1, 87.5 mAh g–1 at 5 A g–1). This work presents a strategy of crystallization engineering for the preparation of fast-charging electrode materials and provides deep insights on the correspondence among morphology, lattice structure, and electrochemical performance.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Yunhao Li,Shuhao Wang,Wenyuan Wu,Haijun Yu,Ruxin Che,Guodong Kang,Yiming Cao
Nanofiltration is considered a promising technology for separation of multivalent/monovalent ions such as extracting lithium from Salt Lake brine with high Mg 2+ /Li + ratio. However, the nanofiltration membranes fabricated via conventional interfacial polymerization process generally possess negatively charged surface and have low Mg 2+ /Li + selectivity. Herein, we proposed a new and facile method, i.e., reversed interfacial polymerization (RIP), to prepare nanofiltration membranes with positively charged surface and uniform charge distribution. The sequence of amine (polyethyleneimine, PEI) and acyl chloride (trimesoyl chloride, TMC) monomers on polysulfone support was reversed compared to the conventional interfacial polymerization (IP) process. Moreover, the solvent of amine monomer was acetone instead of water. The nanofiltration membranes fabricated by this method exhibited higher water flux (from 4.88 to 22.25 Lm −2 h −1 ) and MgCl 2 rejection (from 84.36% to 97.71%). Meanwhile, LiCl/MgCl 2 separation factor in single salt solution reached up to 13.93, which was almost quadruple compared to the conventional control membrane. In addition, the developed nanofiltration membrane also exhibited an excellent separation selectivity ( S Li, Mg = 9.22) in mixture system (Mg 2+ /Li + mass ratio of 20), which had good application potential in extracting lithium resources from Salt Lake brine.
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高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Xingtao Qi,Ze Zhang,Chuanbao Tu,Chao Zhu,Junchao Wei,Zhenyu Yang
Due to the deficiency of low melting point and poor wettability of commercial polyolefin separators, the design and development of ceramic coating separators have been received more and more attention in Li-ion batteries recently. However, it is challenging to solve the disadvantageous exfoliation issue of ceramic coating during charge/discharge cycles and needs to be addressed urgently. Herein, a covalent grafting interface engineering strategy has been proposed to prepare a highly efficient and stable polypropylene/mSiO 2 separator (PP-g-mSiO 2 ) by the nanoscale mSiO 2 layer anchoring on the surface of PP separator with covalent bonding. As expected, the covalent bonding force increase the interfacial stability of PP-g-mSiO 2 separator and the mSiO 2 NPs facilitate more storage of electrolyte, which results in high thermal stability, high electrolyte affinity and swift lithium-ion diffusion . When used as the separator in LIBs, the Li/LiFePO 4 cell with PP-g-mSiO 2 separator exhibits excellent rate capability with a discharge capacity of 101 mA h/g at 5 C and remains high capacity retention of 93% after 1000 continuous charge–discharge cycles, which suggests that the PP-g-mSiO 2 separator possesses a stable and covalent grafting ceramic surface and have greater affinity to electrolyte, resulting in quicker lithium-ion diffusion and excellent cycling stability. Therefore, the covalent grafting interface modification has confirmed an effective strategy to block exfoliation issues of ceramic coating and developed the high-performance ceramic separators for LIBs.
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高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 47
·25217-25225
·
IF 11.301
Zhu Cheng,Hui Pan,Chao Li,Xiaowei Mu,Yueming Du,Fan Zhang,Xueping Zhang,Ping He,Haoshen Zhou
At present most reported all-solid-state Li-metal batteries (ASSLBs) have to operate at elevated temperature due to the huge resistances at solid–solid interfaces. Also, the poor stability of solid-state electrolytes (SSEs) against both Li metal and high-voltage cathodes largely restricts the development of high-voltage ASSLBs featuring high energy density. Herein, a succinonitrile-based solid polymer interlayer (SPI) is in situ introduced at the Li1.5Al0.5Ge1.5(PO4)3 (LAGP)–Li and LAGP–cathode interfaces. The SPI perfectly fills all cracks and voids at solid–solid interfaces, and exhibits high ionic conductivity and a wide electrochemical window up to 4.8 V, which not only provides fast interfacial lithium-ion transport, but also significantly improves the interfacial stability of the SSEs against both Li metal and high-voltage layered oxide cathodes. Therefore, the SPI-based symmetric cell shows stable cycling at 0.1 mA cm−2 for 600 h and a high critical current density of 7 mA cm−2. The LiNi0.8Co0.15Al0.05O2–SPI–LAGP–SPI–Li cell shows a high capacity of 200 mA h g−1 at 0.1C and stable cycling after 100 cycles at 0.5C with a capacity retention of 80% at room temperature. This work presents an effective and practical strategy to achieve outstanding performance of room-temperature ASSLBs with high output voltage.
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高影响因子
Advanced Energy Materials
·
2017
·Vol. 7
·期 22
·1701437
·
IF 16.721
Luyi Yang,Zijian Wang,Yancong Feng,Rui Tan,Yunxing Zuo,Rongtan Gao,Yan Zhao,Lei Han,Ziqi Wang,Feng Pan
A flexible composite solid electrolyte membrane consisting of inorganic solid particles (Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 ), polyethylene oxide (PEO), and boronized polyethylene glycol (BPEG) is prepared and investigated. This membrane exhibits good stability against lithium dendrite, which can be attributed to its well-designed combination components: the compact inorganic lithium ion conducting layer provides the membrane with good mechanical strength and physically barricades the free growth of lithium dendrite; while the addition of planar BPEG oligomers not only disorganizes the crystallinity of the PEO domain, leading to good ionic conductivity, but also facilitates a “soft contact” between interfaces, which not only chemically enables homogeneous lithium plating/stripping on the lithium metal anode, but also reduces the polarization effects. In addition, by employing this membrane to a LiFePO 4 /Li cell and testing its galvanostatic cycling performances at 60 °C, capacities of 158.2 and 94.2 mA h g −1 are delivered at 0.1 C and 2 C, respectively.
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高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 27
·10719-10726
·
IF 8.262
Yong Jiang,Yazhi Feng,Baojuan Xi,Shuangshuang Kai,Kan Mi,Jinkui Feng,Junhao Zhang,Shenglin Xiong
Well-distributed graphene sheets doped with nitrogen (NGSs) were prepared via a thermal annealing strategy with the use of cyanamide. The cyanamide can efficiently restrain the conglomeration of the resultant graphene sheets and simultaneously ensure the doping of nitrogen. Followed by the next-step of the low-temperature solvothermal route, uniform ultrasmall tin sulfide (SnS2) nanocrystals were readily grown on the preformed NGS (denoted as SnS2–NGS). Benefiting from the synergistic function between NGSs and SnS2, the resultant composites exhibit excellent electrochemical performance. When evaluated as anode materials for lithium-ion batteries (LIBs), SnS2–NGS with a moderate weight ratio of SnS2 delivers outstanding electrochemical performance giving a high reversible capacity of 1407 mA h g−1 at 200 mA g−1 after 120 cycles. The composites can also maintain a reversible capacity of about 200 mA h g−1 at a high current density of 10 A g−1. The lithium-ion storage ability of the prepared SnS2–NGS electrode is at the top rank in comparison with those of other studies. The obtained composites also achieved good sodium storage ability.
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高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Yijie Liu,Bojie Li,Zhu Cheng,Chao Li,Xiaoyu Zhang,Shaohua Guo,Ping He,Haoshen Zhou
The all-solid-state Li-air battery is a promising next-generation energy storage technique because of its high safety and high theoretical specific energy density . The all-solid-state Li-air batteries with LAGP as electrolyte layer , Li foil as anode and a mixture composed of single-walled carbon nanotubes (SWCNTs), RuO 2 nanoparticles and Li 1.5 Al 0.5 Ge 1.5 P 3 O 12 (LAGP) as composite cathode were investigated in ambient air at room temperature . Charge overpotential was reduced because of the superior catalytic activities of RuO 2 nanoparticles . Besides, SEM images showed the formation of chip-like products after discharge to 1000 mA h g -1 and wrinkles-like products after fully discharged to 2 V, respectively. Galvanostatic intermittent titration technique (GITT) demonstrated that the equilibrium voltage of all-solid-state Li-air batteries cycling in oxygen kept stable at 2.96 V while that cycling in ambient air maintained at 3.15 V. These results indicated that the electrochemical reactions of all-solid-state Li-air batteries can be ascribed to the formation and decomposition of lithium peroxide in oxygen and electrochemical reaction with moisture in air.
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高影响因子
ACS Omega
·
2020
·
IF 2.87
Xinxi Li,Binghe Zheng,Long Liu,Guoqing Zhang,Zhongyun Liu,Wen Luo
Nanostructured hollow silicon has attracted tremendous attention as high-performance anode materials in Li-ion battery applications. However, the large-scale production of pure hollowed silicon with long cycling stability is still a great challenge. Here, we report an improved low-temperature molten salt strategy to synthesize nanosized hollowed silicon with a stable structure on a large scale. As an anode material for rechargeable lithium-ion batteries, it exhibits a high capacity, excellent long cycling, and steady rate performance at different current densities. Especially, a high reversible capacity of 2028.6 mA h g–1 at 0.5 A g–1 after 150 cycles, 994.3 mA h g–1 at 3 A g–1 after 500 cycles, and 538.8 mAh g–1 at 5 A g–1 after 1200 cycles could be obtained. This kind of nanosized hollowed silicon can be applied as a basic anode material in silicon-based composites for long-term stable Li-ion battery applications.
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高影响因子
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