Materials Today Energy
·
2023
·
IF 9.3
Meng Li,Lei Shi,Jun Jin,Meifen Wu,Zhaoyin Wen
Lithium-air batteries (LABs) have been regarded as the pinnacle of energy storage field owing to their ultrahigh energy density . However, most research focuses on lithium-oxygen batteries that work in pure oxygen instead of ambient air due to Li anode corrosion by the moisture in air atmosphere. Inspired by soft properties of gel polymer electrolyte (GPE) and dense structure characteristics of Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 ceramic, a sandwich-structured ceramic/gel hybrid electrolyte is successfully constructed via ultraviolet-irradiation method in this work, in which Li 1 . 5 Al 0.5 Ge 1.5 (PO 4 ) 3 ceramic is helpful in inhibiting Li anode corrosion while GPE is good at optimizing interface compatibility of electrolyte│electrode. The results show that the Li anode in LABs maintains metallic luster even after cycling in ambient air at 10–20% relative humidity (RH) for more than 100 h. Moreover, the interface resistance of Li symmetric cell is sharply reduced (from over 20 kΩ–1 kΩ), and it exhibits an ultralong lifespan (2000 h). Therefore, the lithium-air coin cell with this hybrid electrolyte has achieved more than 4-times the lifetime of that of conventional GPEs. A ‘3.5 cm × 3.5 cm’ pouch cell based on this hybrid electrolyte has also obtained an excellent cycle life of 750 h, further proving its application prospects in LABs.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Zelin Xu,Kuirong Deng,Suping Zhou,Zheng Liu,Xiongcong Guan,Daize Mo
High-concentration electrolytes (HCEs) can effectively enhance interface stability and cycle performance of Li metal batteries (LMBs). However, HCEs suffer from low ionic conductivity, high viscosity, high cost, and high density. Herein, fluorobenzene (FB) diluted localized high-concentration electrolytes (LHCEs) consisting of lithium bis(fluorosulfonyl)imide (LiFSI)/triethyl phosphate (TEP)/FB are developed. 2.3 M LHCE can reserve concentrated Li+–FSI––TEP solvation structures. Diluent FB possesses low density, low viscosity, low cost, low dielectric constant, low LUMO, and a good fluorine-donating property, which can significantly reduce viscosity, improve ionic conductivity, promote the formation of LiF-rich SEI, and enhance interaction of Li+–TEP and Li+–FSI– ion-pairs of the electrolytes. 2.3 M LHCE is a highly safe nonflammable electrolyte. 2.3 M LHCE can effectively inhibit dendrite growth on Li metal anode. 2.3 M LHCE endows LiFePO4 cells with good rate capability (discharge capacity of 112.7 mAh g–1 at 5 C rate) and excellent cycling performance (capacity retention of 95.4% after 1000 cycles). 2.3 M LHCE also shows good compatibility with LiNi0.8Co0.1Mn0.1O2 and exhibits outstanding cycle stability (capacity retention of 86.4% after 500 cycles). Therefore, 2.3 M LHCE is a promising electrolyte for practical applications in LMBs.
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2016
·Vol. 99
·期 11
·3784-3791
·
IF 2.787
Jingkun Yuan,Peigang He,Chao Yang,Dechang Jia,Jinsong You,Shu Yan,Delong Cai,Zhihua Yang,Xiaoming Duan,Shengjin Wang,Jiahuan Xu,Yu Zhou
The purpose of this work was to study the role of lithium in cesium-based geopolymers and the thermal evolution during heat treatment together with thermal expansion behavior of the resulting geopolymer ceramic. A series of lithium-substituted cesium-based geopolymers, Cs (1− x ) Li x GP (where x = 0, 0.1, 0.2, and 0.3), were prepared. All the geopolymer samples were heated at 1300°C for 2 h and thermal evolution on heating was studied by a variety of techniques. Phase composition, microstructure evolution, and thermal expansion behaviors of the ceramics derived from the geopolymers were characterized. All the geopolymer specimens exhibited similar thermal evolutionary trends. With increases in lithium content, overall mass loss increased gradually due to the higher hydration energy of Li + than Cs + . Thermal shrinkage of these specimens can be divided into four stages, i.e., structural resilience, dehydration, dehydroxylation, and sintering, according to the dilatometer results. The introduction of Li results in two-step sintering behavior for the lithium-substituted cesium-based geopolymers. The average thermal expansion coefficient (CTE) of Cs (1− x ) Li x GP ceramics decreased from 4.80 × 10 −6 K −1 ( x = 0) to 3.61 × 10 −6 K −1 ( x = 0.3) with increase in lithium substitution. The reason can be attributed to the presence of spodumene after thermal treatment, which has a relatively low thermal expansion coefficient compared with pollucite. Meanwhile, molten spodumene could serve as a buffer phase between pollucite crystals also conducive to the decline of CTE of this system.
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Zhoufei Yang,Jin Wang,Chaojie Cui,Ying Jin,Gang Zhang,Henghui Zhou,Weizhong Qian
Compared with aluminum foil (Al foil), the three-dimensional (3D) aluminum foam (Al foam) has the characteristics of 3D interconnected metal wires and through-hole structure with high specific surface area, which exhibits great potential for application in high-power energy storage devices. In this work, 3D Al foam-based and Al foil-based cathode sheets were fabricated and assembled into pouch cells. In-situ XRD was employed to analyze the electrochemical reaction behavior of the two types of porous electrodes . The 3D Al foam-based cathode demonstrated faster electron transfer and lithium-ion diffusion as compared to the Al foil-based electrode, which is helpful for a uniform electrochemical reaction and decreases the electrochemical polarization. Electrochemical simulations and porous electrode models were built to understand these phenomena. The Al foam-based LiFePO 4 batteries exhibit much better power and energy performance than Al foil-based LiFePO 4 battery. The power density of the Al foam pouch cells is 7.0–7.7 kW/L when the energy density is 230–367 Wh/L, which is the highest power and energy density among reported Al foam-based devices. The new findings open up opportunities for the development of high-power and high-energy-density commercial batteries.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Yuchen Zhang,Zhengfu Qiu,Zhuyi Wang,Shuai Yuan
An organic/inorganic hybrid coating consisting of molecular sieve (MS)/sulfonated melamine formaldehyde condensate (SMF) is fabricated on the polyethylene (PE) separator by a simple dip-coating process. The MS/SMF coating with high polarity enhances the electrolyte uptake of PE separator, and therefore favors higher ionic conductivity and Li + transference number of separators. By regulating the ratio of MS/SMF, much higher Li + transference number up to 0.5 can be obtained compared with the original PE separator (0.25). The PE separator possesses highest effective Li + ionic conductivity when the ratio of MS/SMF is 3:1, which promotes more uniform Li + deposition on the lithium metal surface for excellent lithium plating/stripping cycling stability up to 1000 h without any signs of short-circuit. Moreover, the functional PE separator possesses excellent H 2 O and HF capturing ability due to strong adsorption of MS and SMF for H 2 O and the scavenging of SMF for HF. The MS-SMF@PE separator-employed LiCoO 2 /Li unit cell shows superior C-rates capability and cycling performance, and no obvious lithium dendrite growth is found on the surface of lithium metal anode after cycling.
✓ 已验证
DOI
高影响因子
Nanoscale
·
2015
·Vol. 7
·期 28
·12215-12224
·
IF 7.394
Yongquan Zhang,Qiang Fu,Qiaoling Xu,Xiao Yan,Rongyu Zhang,Zhendong Guo,Fei Du,Yingjin Wei,Dong Zhang,Gang Chen
N-doped TiO2-B nanowires are prepared by the solvothermal method using TiN nanoparticles as the starting material. X-ray photoelectron spectroscopy shows that the N dopants preferentially occupy the interstitial sites of TiO2-B up to a content of ∼0.55 at%. Above this critical value, the N dopants will substitute the oxygen atoms which improve the electronic conductivity of TiO2-B. The maximum proportion of substituted-N in the TiO2-B nanowires is ∼1.3 at%. Raman scattering shows that the substituted-N strengthens the Ti(1)–O1–Ti(2) and O1–Ti(1)–O3 bonds of TiO2-B. This improves the stability of the corresponding local structures, thus reducing the distortion of the Li+ diffusion channel along the b-axis of TiO2-B. As a result, the substituted-N has more of an impact on the electrochemical properties of TiO2-B than the interstitial-N does. The TiO2-B nanowires containing substituted-N dopants exhibit a remarkably enhanced electrochemical performance compared to pure TiO2-B. They show a discharge capacity of 153 mA h g−1 at the 20 C rate with a capacity retention of 76% after 1000 cycles. In addition, they can deliver a discharge capacity of 100 mA h g−1 at an ultra-high rate of 100 C, indicating their great potential in high power lithium ion batteries.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 15
·9110-9119
·
IF 10.733
Xiao Xiang,Jing Yi Wu,Qing Xuan Shi,Qing Xia,Zhi Gang Xue,Xiao Lin Xie,Yun Sheng Ye
Nanostructured functional interlayers and separators have potential applications in high-performance lithium–sulfur (Li–S) batteries, due to their ability to suppress polysulfide (PS) shuttling. However, effective PS-trapping designs are usually accompanied by limited Li-ion diffusion, which becomes a key issue hindering practical application. Here, a nitrogen-functionalized 2D mesoporous silica nanoplate (FMSiNP) was used to construct a dense, lightweight (<0.2 mg cm−2) multi-functional interlayer using a simple casting approach, which effectively suppressed the PS shuttling, while facilitating Li+ diffusion. Being able to synergistically combine the merits of strong PS trapping with fast Li+ diffusion and excellent electrolyte wettability, Li–S batteries with FMSiNP coated-interlayers show improved PS utilization and retention. These batteries additionally show a superior cycling stability, capacity fading rate (0.038% per cycle at 1.0C over 1500 cycles), a high rate performance (discharge capacity of 574 mA h g−1 at 4.0C), low self-discharge behaviour and a high areal capacity (2.48 mA g cm−2 over 100 cycles), when using a pure sulfur/carbon black (CB) mixture as a cathode. This rational design for multi-functional interlayers provides a facile and effective strategy to create high energy density Li–S batteries for practical applications.
✓ 已验证
DOI
高影响因子
Nano Energy
·
2018
·
IF 13.12
Xiaosen Zhao,Lichang Yin,Tong Zhang,Min Zhang,Zhibo Fang,Chunzhong Wang,Yingjin Wei,Gang Chen,Dong Zhang,Zhenhua Sun,Feng Li
Selenium (Se) is a prospective candidate of cathode material for high-energy batteries . However, the dissolution of high-order lithium selenides and the shuttle effect in electrolytes lead to low Se utilization, inferior capacity and poor cycling performance. Herein, a heteroatoms (N and O) dual-doped hierarchical porous carbon (HDHPC) with interconnected macro/meso/micropores is used to confine Se composite and developed as a cathode material for advanced Li/Na–Se batteries in low-cost carbonate electrolyte. For Li-Se batteries, Se/HDHPC cathode delivers an initial charge capacity of 613 mAh g −1 and maintains stable reversible capacity of 545 mAh g −1 with a capacity decay as low as 0.0074% per cycle after 1500 cycles at a current density of 0.5 C (1 C = 675 mA g −1 ). For Na-Se batteries, Se/HDHPC exhibits a high initial charge capacity of 619 mAh g −1 and retains as high as 402 mAh g −1 after 500 cycles at a current rate of 0.5 C. Moreover, Se/HDHPC composite also exhibits an excellent rate performance both in the Li-Se and Na-Se batteries even at a high rate up to 20 C (13.5 A g −1 ). Such excellent electrochemical properties of Se/HDHPC are mainly contributed from two aspects. One is the hierarchical porous structure of the HDHPC, which benefit the penetration of electrolyte and also act as micro reaction chambers to effectively suppress the volume change of the electrode. The other is the strong interaction between lithium/sodium selenide and carbon host induced by heteroatoms (N and O) dual-doping, which can strongly anchor the Se-contained species, thus preventing the side reaction of Se anions with electrolyte.
✓ 已验证
DOI
高影响因子
Chem
·
2018
·
IF 14.104
Aoxuan Wang,Xinyue Zhang,Ying-Wei Yang,Jiaxing Huang,Xingjiang Liu,Jiayan Luo
Lithium (Li) metal, the anode of choice for its high energy density, was used before the 1990s but was abandoned because of its dendrite formation. There are many strategies to address the dendrite problems, but the Li growth direction is largely normal to the anodes and there are still chances that the dendrites can cross over the separator. Here, we fundamentally suppress dendrites by designing horizontal centripetal Li plating. In patterned reduced graphene oxide (rGO)/Li anodes, the electric field is detoured to the edges of the patterned anodes. Li nucleates at the void edges of the layered Li separated by rGO sheets and grows horizontal centripetally to fill the voids. The patterned rGO/Li anodes were cycled for more than 2,000 hr and maintained stable voltage profiles at a current density of 10 mA cm −2 . We anticipate that the horizontal centripetally grown behavior could revolutionize the design of high-performance Li-metal batteries.
✓ 已验证
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 8
·4670-4677
·
IF 7.79
Liang Wang,Jiashun Liang,Xiaoyu Zhang,Shenzhou Li,Tanyuan Wang,Feng Ma,Jiantao Han,Yunhui Huang,Qing Li
Ni-rich ternary layered oxides represent the most promising cathodes for lithium ion batteries (LIBs) due to their relatively large specific capacities and high energy/power densities. Unfortunately, their inherent chemical instability and surface side reactions during the charge/discharge processes lead to rapid capacity fading and poor cycling life, which seriously restrict their practical applications. Herein, we report a simple dual-modification strategy for preparing LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode materials by Li2SnO3 surface coating and Sn4+ gradient doping. The gradient Sn doping stabilizes the layered structure due to the strong Sn–O covalent bond and relieves the Li+/Ni2+ cation disorder by the partial oxidation of Ni2+ to Ni3+. Besides, the ionic and electronic conductive Li2SnO3 coating serves as a protective layer to eliminate the side reactions with electrolyte/air. In LIB testing, the dual-modified NCM622 cathode with 2% Sn delivers an enhanced cycling performance with 88.31% capacity retention after 100 cycles from 3.0 to 4.5 V at 1C compared to the bare NCM622. Meanwhile, the dual-modified NCM622 shows an improved reversible capacity of 136.2 mA h g−1 at 5C and enhanced electrode kinetics. The dual-modification strategy may enable a new approach to simultaneously relieve the interfacial instability and bulk structure degradation of Ni-rich cathode materials for high energy density LIBs.
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jie Zhou,Siyuan Jin,Ruizhi Wu,Xiaochun Ma,Mengyao Pang,Zhe Yu,Guixiang Wang,Jinghuai Zhang,Boris Krit,Sergey Betsofen,Vitalii Neshchimenko,Buzikov Ruslan,Min Qiu,Yurong Yang,Jiaming Chen
Microarc oxidation (MAO) coatings incorporating hexagonal boron nitride (h-BN) nanoparticles were synthesized on Mg-Li alloys. The effects of h-BN nanoparticle concentration on the structure, phase composition, and tribological properties of the MAO coatings were systematically investigated. The results indicate that the addition of h-BN nanoparticles induces the formation of protrusions on the coating surface, varied in size and distribution with the concentration of h-BN particles. The protrusions are advantageous for enhancing the wear resistance of the coating, owing to the effective reduction of the contact area and the lubricating impact of the released h-BN particles during wear. The thickness and hardness of the coating contained h-BN particles are significantly elevated. At an optimal h-BN concentration of 7 g/L, the composite coating exhibits the lowest average coefficient of friction (COF = 0.59) and the minimum wear rate (W = 2.6 × 10 −6 mm 3 /N·m), thereby demonstrating superior tribological performance.
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Chenye Wang,Yan Dai,Rongrong Cao,Lei Bai,Jie Zhang,Wenjia Wu,Weijie Kou,Jingtao Wang
Zwitterions, covalently tethered by cation and anion, show great potential in the development of safe and high-performance electrolyte owing to the inherent characteristics of non-volatility, non-flammability, and electrification but non migration. The interaction between cations and anions in zwitterionic-lithium salt electrolyte is supposed to influence the lithium ions (Li + ) migration efficiency, but being rarely studied. Herein, zwitterionic liquid (ZIL) electrolytes with three different anionic groups (−PO 4 − , −SO 3 − , −COO − ) were synthesized. We demonstrate that the −PO 4 − group with the most negative electrostatic potential exerts the strongest competitive coordination effect on Li + , weakening Li + -TFSI − binding and promoting lithium salt dissociation. This coordination also facilitates a lower migration energy barrier for Li + and lessens intermolecular forces between zwitterions, reducing the freezing point. The ZIL-P electrolyte with the −PO 4 − group shows high Li + transference number (0.54 at −40 °C) and ionic conductivity (1.57 × 10 −4 S cm −1 at −20 °C), outperforming most liquid electrolytes. The enhanced Li + transfer results in excellent cycling stability, with a 98.1% capacity retention after 500 cycles at 0.5C. Furthermore, the gel electrolyte constructed with ZIL-P and silicon-based framework improved battery performance: LFP|SiGE-ZIL-P|Li after 600 cycles with capacity retention rate of 98.5% at 0.5C and −20 °C.
✓ 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）