Advanced Physics Research
·
2025
·
IF 2.8
Jiaxiao Qi,Yongjing Wang,Haixiong Tang,Jiayu Zhao,Yu Hong,Qiong Li,Ming Jiang,Lijie Dong
Solid-state electrolytes (SSEs) are promising for lithium batteries with higher safety, cycling stability, and energy density. Among the various SSEs, solid polymer electrolytes (SPEs) are a highly preferred choice due to their high thermal stability, thin design, and good formability. However, polymer electrolytes have low ionic conductivity, for example, polyethylene oxide (PEO), one of the most dominant polyelectrolyte materials, has a low ionic conductivity at room temperature due to its high crystallinity. Theoretically, increasing the ionic active sites by decreasing its crystallinity is an effective strategy, but this may lead to its inability to form films or poor mechanical strength. In this work, the crystallinity of PEO is reduced by introducing succinonitrile (SN), and solution blow-spun polyacrylonitrile (PAN) fiber film is employed as the skeleton of the SPE to provide good mechanical strength. PEO-LiTFSI-SN/PAN SPEs have a tensile strength of at least 4.5 MPa. To provide more Li + active sites, PEO-LiTFSI-SN/MXene@PAN composite SPEs are fabricated by doping the PAN fibers with MXene rich in functional groups. The specific capacity of the LFP|PEO-LiTFSI-SN/MXene@PAN|Li button cell reaches 134.8 mAh g −1 in the first cycle, and the capacity retention rate of 100 cycles is 75.8% at 0.5 C at room temperature.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2024
·
IF 3
Furui Ma,Yuxiang Liu,Xuanru Du,Qingqing Lu
The development of excellent performance solid-state electrolytes (SSEs) is essential for high-energy solid-state lithium batteries . Herein, solid state composite electrolyte consisting of NASICON particles and PEO-LiTFSI was prepared through a solvent-free procedure. The assembled LFP / PEO-LATP / Li all-solid-state battery can present an initial capacity of 153.8 mA h g −1 and exhibit excellent electrochemical stability with a high capacity retention ratio of 95% after 100 cycles at 60 °C. In addition, a small amount of ionic liquid (IL) was added into hybrid solid electrolyte (HSE) to enhance the interface contact and improved the room temperature performance. Surprisingly, the assembled LFP / HSE / Li battery exhibits a stable discharge capacity of 157.6 mA h g −1 at 25 °C when the content of IL is 3%. The capacity retention can be reached 97.8% over 150 cycles at 60 °C. All the results show that assembled cells with HSE revealed an improved electrochemical performance .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 8
·1743-1751
·
IF 7.779
Hao Wang,Yuruo Qi,Fangyuan Xiao,Pan Liu,Yi Li,Shu-juan Bao,Maowen Xu
The construction of highly conductive structures with excellent adsorption–catalytic properties to accelerate electron transfer and suppress polysulfide shuttle is considered as an effective strategy to achieve well-performing sodium–sulfur batteries. Herein, a self-supported tessellated N-doped carbon/CoSe2 (NCCS) is developed as a sulfur host for sodium–sulfur batteries by a simple deposition–selenization of lyophilized bacterial cellulose (BC), where NC acts as a conductive network to ensure the rapid initiation of efficient catalytic reactions at the tessellated CoSe2 interface and maintain good structural stability. The CoSe2 nanoparticles provide strong ability in anchoring, trapping and catalyzing polysulfides. As a result, the prepared tessellated NCCS@S cathode demonstrates a high initial discharge specific capacity of 871.3 mA h g−1 at a current rate of 0.1C and good electrochemical stability for up to 500 cycles at 1C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2018
·
IF 13.709
Hongli Wan,Jean Pierre Mwizerwa,Xingguo Qi,Xin Liu,Xiaoxiong Xu,Hong Li,Yong-Sheng Hu,Xiayin Yao
High ionic conductivity electrolyte and intimate interfacial contact are crucial factors to realize high-performance all-solid-state sodium batteries. Na2.9PS3.95Se0.05 electrolyte with reduced particle size of 500 nm is first synthesized by a simple liquid-phase method and exhibits a high ionic conductivity of 1.21 × 10–4 S cm–1, which is comparable with that synthesized with a solid-state reaction. Meanwhile, a general interfacial architecture, that is, Na2.9PS3.95Se0.05 electrolyte uniformly anchored on Fe1–xS nanorods, is designed and successfully prepared by an in situ liquid-phase coating approach, forming core–shell structured Fe1–xS@Na2.9PS3.95Se0.05 nanorods and thus realizing an intimate contact interface. The Fe1–xS@Na2.9PS3.95Se0.05/Na2.9PS3.95Se0.05/Na all-solid-state sodium battery demonstrates high specific capacity and excellent rate capability at room temperature, showing reversible discharge capacities of 899.2, 795.5, 655.1, 437.9, and 300.4 mAh g–1 at current densities of 20, 50, 100, 150, and 200 mA g–1, respectively. The obtained all-solid-state sodium batteries show very high energy and power densities up to 910.6 Wh kg–1 and 201.6 W kg–1 based on the mass of Fe1–xS at current densities of 20 and 200 mA g–1, respectively. Moreover, the reaction mechanism of Fe1–xS is confirmed by means of ex situ X-ray diffraction techniques, showing that partially reversible reaction occurs in the Fe1–xS electrode after the second cycle, which gives the obtained all-solid-state sodium battery an exceptional cycling stability, exhibiting a high capacity of 494.3 mAh g–1 after cycling at 100 mA g–1 for 100 cycles. This contribution provides a strategy for designing high-performance room temperature all-solid-state sodium battery.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Sheng’an Yang,Qingming Chen,Yunrui Yang,Yan Gao,Ruidong Xu,Hui Zhang,Ji Ma
Perovskite manganite La 1− y Ca y MnO 3 has giant and tunable magnetoresistance ( MR ) and anisotropic magnetoresistance ( AMR ), still the following two challenges are of great concern: (i) large magnetic field is required for achieving excellent electromagnetic performance; and (ii) metal–insulator (M–I) transition temperature ( T MI ) significantly different from room temperature; both these factors limit its practical applications. In this study, polycrystalline La 0.7 Ca 0.3 MnO 3 :Ag x composites were fabricated by sol–gel and solid–phase addition methods, and large MR and AMR (84.1% and 32%, respectively) were obtained at near room temperature in 1 T magnetic field when x = 0.2. Evidently, it was found that the grain boundary scattering effects were weakened due to Ag−addition, which resulted in an enhancement of MR . The tremendously high AMR value was attributed to the anisotropic spin–orbit coupling (SOC) effect. The electron–scattering and small–polaron hopping models were used to successfully fit the resistivity data, which support the SOC effect under different magnetic fields that enhance the AMR . These results support further development of the perovskite manganese oxide with potential applications in manganite devices.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 11
·12727-12737
·
IF 9.9
Liu Hongbin,Sun Qing,Cheng Jun,Zhang Hongqiang,Xu Xiao,Li Yuanyuan,Zeng Zhen,Zhao Yue,Li Deping,Lu Jingyu,Ci Lijie
Due to the increasing demand and wide applications of lithium-ion batteries, higher requirements have been placed on the energy density and safety. Polymer solid-state electrolytes have gained significant popularity due to their excellent interface compatibility and safety. However, their applications have been greatly restricted by the high crystallinity at room temperature, which hinders the transport of lithium ions. Herein, we utilize inorganic tubular fillers with abundant lone-pair atoms to reduce the crystallinity of the polyethylene oxide (PEO) solid-state electrolyte membrane and improve its ionic conductivity at room temperature, enabling stable operation of the battery. The tubular lone-pair-rich inorganic fillers play a key role in providing avenues for both internal and external charge transportation. The surface lone-pair electrons facilitate the dissociation and transport of lithium ions, while the internally tubular electron-rich layer attracts ions into the cavities, further enhancing the ion transport. After 100 cycles at room temperature, the lithium battery loaded with this solid-state electrolyte membrane delivers a specific capacity of 141.6 mAh·g −1 , which is 51.3% higher compared to the membrane without the fillers.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-11
·
IF 17.694
Li Jing,Qi Jizhen,Jin Feng,Zhang Fengrui,Zheng Lei,Tang Lingfei,Huang Rong,Xu Jingjing,Chen Hongwei,Liu Ming,Qiu Yejun,Cooper Andrew I.,Shen Yanbin,Chen Liwei
All solid-state lithium batteries (SSLBs) are poised to have higher energy density and better safety than current liquid-based Li-ion batteries, but a central requirement is effective ionic conduction pathways throughout the entire cell. Here we develop a catholyte based on an emerging class of porous materials, porous organic cages (POCs). A key feature of these Li + conducting POCs is their solution-processibility. They can be dissolved in a cathode slurry, which allows the fabrication of solid-state cathodes using the conventional slurry coating method. These Li + conducting cages recrystallize and grow on the surface of the cathode particles during the coating process and are therefore dispersed uniformly in the slurry-coated cathodes to form a highly effective ion-conducting network. This catholyte is shown to be compatible with cathode active materials such as LiFePO 4 , LiCoO 2 and LiNi 0.5 Co 0.2 Mn 0.3 O 2 , and results in SSLBs with decent electrochemical performance at room temperature.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
Small
·
2024
·Vol. 20
·期 51
·2405565
·
IF 13
Yongquan Zhang,Zengxu Chen,Jingshun Wang,Shuo Fan,Tiandong Zhang,Changhai Zhang,Yue Zhang,Qingguo Chi
All-solid-state lithium metal batteries (ASSLMBs) are renowned for their high energy density and safety, positioning them as leading candidates for next-generation energy storage solutions. In this study, pure polymer solid-state electrolytes are developed using the solution casting method, optimized for room temperature operation. The base material, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), is enhanced with succinonitrile (SN) and polyacrylonitrile (PAN) to improve its electrochemical performance at room temperature. The optimized electrolyte, PSP-0.05, demonstrated superior characteristics, including an ionic conductivity ( σ ) of 3.2 × 10 −4 S cm −1 and a wide voltage window of up to 5 V. When integrated into full batteries, PSP-0.05 exhibited exceptional performance in multiplicative cycling tests at room temperature, achieving discharge specific capacities of 132 and 113 mAh g −1 at 3 and 5 C rates, respectively. Additionally, long-term cycling at 1 C rate resulted in an initial discharge-specific capacity of 145.2 mAh g −1 with over 94.9% capacity retention after 1000 cycles. Given the simplicity of the preparation process and its impressive electrochemical properties, the PSP-0.05 electrolyte holds significant potential for practical applications in safer ASSLMBs.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 7
·3400-3408
·
IF 14.511
Cheng Wang,Tianqi Yang,Wenkui Zhang,Hui Huang,Yongping Gan,Yang Xia,Xinping He,Jun Zhang
The use of solid electrolytes can fundamentally change energy storage systems due to their higher safety and energy density. Herein, we design hydrogen-bonded polyethylene oxide (PEO) composite solid electrolytes (CSEs), which are hydrolyzed by tetraethyl orthosilicate (TEOS) in alkaline solution to form SiO2 with rich hydroxyl groups on its surface. This in situ formed SiO2 can not only reduce the crystallinity of PEO and increase the ionic conductivity (1.8 × 10−4 S cm−1 at 30 °C), but also adsorb anions so as to increase the lithium-ion transference number (tLi+ = 0.42). More importantly, hydrogen bonding can be formed with PEO, LITFSI and succinonitrile to form an interconnected network to improve the mechanical strength (Young's modulus = 0.72 GPa). In addition, we avoid the poor film formability and low mechanical strength by adjusting the ratio of EO : Li to 30 : 1 to reduce the content of lithium salt in the CSEs. Due to the high mechanical strength, the critical current density of lithium symmetrical batteries is as high as 1.4 mA cm−2. Using this CSE, a solid state LiFePO4‖Li battery delivers a high discharge capacity of 161.2 mA h g−1 at 0.5C with a capacity retention of 88% after 400 cycles at 30 °C. The in situ formed highly dispersed SiO2 reinforced PEO with abundant hydrogen bonds enables high performance of solid-state lithium batteries at room temperature.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 34
·18338-18348
·
IF 12.732
Wei Xiong,Tao Huang,Yuqing Feng,Xue Ye,Xiaoyan Li,Jianneng Liang,Shenghua Ye,Xiangzhong Ren,Yongliang Li,Qianling Zhang,Jianhong Liu
Solid-state electrolytes (SSEs) are promising alternatives to traditional liquid electrolytes because of their safety issues. However, polymer SSEs have low ionic conductivity and weak mechanical strength, and inorganic SSEs are very brittle and unstable to lithium metal and atmospheric moisture, which restricts their practical applications. To avoid these disadvantages, it is essential to develop polymer–inorganic composite SSEs. In this work, we for the first time construct a solid composite polymer electrolyte of poly(vinylidene fluoride hexafluoropropylene) (PVDF-HFP) blended with Li1.3Al0.3Ti1.7(PO4)3 and flower-like CeO2 particles enriched with oxygen vacancies as inorganic fillers. The composite SSEs exhibit a wide electrochemical window of 5.1 V (vs. Li/Li+) and high ionic conductivity of 1.66 × 10−3 S cm−1 at room temperature. The conductivity enhancement originates from the oxygen vacancies associated with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) for releasing more lithium ions, and CeO2 is also beneficial for the suppression of Li dendrites. The solid-state LiFePO4/SSE/Li cell exhibits superior electrochemical performance at room temperature, the capacity is as high as 166.6 mA h g−1 at 0.1C, and the cell can sustain 83.1 mA h g−1 at 2C after 1000 cycles.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2022
·Vol. 6
·期 24
·5503-5513
·
IF 6.813
Kun Shi,Dawei Zheng,Zhiming Guo,Zeheng Yang,Weixin Zhang
The development of solid-state electrolytes suitable for room-temperature lithium ion batteries is always trapped in irreconcilable contradictions among ionic conductivity, mechanical properties and fabrication complexity. Herein, novel polymer-in-salt sandwich-like solid composite electrolytes (SSCEs) employing a polypropylene separator (PP) as a mechanical reinforcement framework are prepared by a facile two-step coating method. Besides providing affluent free lithium ions, high-content lithium salt dissolved in the poly(vinylidene fluoride) matrix endows maximized amorphous regions and interconnected lithium ion pathways consisting of ionic clusters. Benefiting from the Lewis acid–base interactions introduced by Li6.4La3Zr1.4Ta0.6O12, the polymer crystallinity further decreases and lithium salt dissociates more thoroughly as well. More importantly, the unique PP separator-reinforced structure enables sufficient suppression of lithium dendrite growth by taking advantage of the robust PP framework as an effective physical barrier. Hence, the designed SSCEs deliver significantly improved mechanical properties, high ionic conductivity and a large lithium-ion transference number, enabling high rate performance and excellent cycling stability at room temperature. Besides, the wide applicability of SSCEs is also demonstrated through an assembled LiFePO4/graphite pouch cell operated under various extreme conditions. The results indicate that such polymer-in-salt SSCEs reinforced by a PP separator have a great application prospect in high-performance room-temperature solid-state lithium ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Aerzigu Xukeer,Jin Li
ZnO/MnO 2 nanostructures, including nanosheets and nanotubes, were synthesized by hydrothermal and annealing method. The carefully designed ZnO/MnO 2 heterostructure significantly enhances ammonia gas sensing performance at room temperature (RT). By integrating heterojunction formation with structural optimization, this approach facilitates faster charge carrier transport and increases the surface area compared to pure ZnO. The incorporation of nanosheet- and nanotube-structured ZnO/MnO 2 heterojunctions leads to a substantial reduction in response/recovery time, which decrease to 6 s and 3 s, accordingly. Furthermore, first-principles calculations are employed to elucidate the potential sensing mechanism by analyzing the electronic density of states, electrostatic potential, charge transfer, population analysis, and adsorption energy between the sensing materials and ammonia molecules.
研究领域:
材料科学
·
化学
✓ 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）