ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Li-Qian Cheng,Xinyuan Xie,Kai Chen,Xuxia Hao,Min Jiang,Yanping Tang,Haijiao Xie,Zhaoyin Wen
The pursuit of high-power and prolonged service life lithium ion batteries has driven extensive research into novel anode materials. Titanium niobium oxide (TNO) has arisen as a prospective contender due to its high reaction potential and low strain performance, which effectively avoid side reactions and suppress the formation of lithium dendrite. However, challenges such as poor conductivity and structural instability during high-rate cycling have hindered their practical application. In this study, high-performance V5+ and F– codoping of the TiNb2O7 (V/F-TNO) anode is obtained by a facile solvothermal method and exhibits outstanding electrochemical properties in both liquid- and solid-state batteries. Under the synergistic effect of V5+ and F– doping, impurity bands and additional oxygen vacancies are introduced to enhance the conductivity, while the particle size is reduced, which significantly improves its rate performance. In addition, a more stable crystal structure improves its cycle life. Thereby, the V/F-TNO anode displays a high reversible capacity of 322.8 mAh g–1 at 0.1 C and a superior rate capability of 222.6 mAh g–1 at 20 C. During long-term cycles, the V/F-TNO anode presents an outstanding discharge capacity of 178.5 mAh g–1 after 1500 cycles at 10 C, equivalent to a capacity retention rate of 78.2%. LiFePO4 (LFP)|Li1.3Al0.3Ti1.7(PO4)3 composite polymer electrolyte (LATPCPEs)|V/F-TNO solid-state batteries (SSBs) are assembled and display ideal capacities of 129.3 mAh g–1 at 0.2 C and 83.5 mAh g–1 at 5 C. Moreover, they retain an extraordinary capacity of 101.7 mAh g–1 after 200 cycles at 0.5 C, corresponding to a high-capacity retention ratio of 86%. This study demonstrates that the V/F-TNO anode is a promising candidate for high-power liquid and solid-state batteries.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Yulong Liu,Huanyan Xu,Tianci Wang,Minghua Chen
The liquid electrolytes (LEs) in traditional lithium batteries present safety concerns. Solid polymer electrolytes (SPEs) have garnered increasing attention due to their nonvolatility, ease of processing, excellent mechanical properties, and stability. However, the performance of PEO-based solid-state batteries is often constrained by low ionic conductivity and poor mechanical strength. Therefore, we fabricated a nanofiber scaffold (PAN@UiO66) using electrospinning technology and then cast a solution containing zirconia (ZrO2) fillers and bis(trifluoromethane)sulfonimide (LiTFSI), dispersed in poly(ethylene oxide) (PEO), onto the electrospun PAN@UiO66 scaffold to obtain a composite solid polymer electrolyte (CSPE, PZ/PAN@UiO66). The synergistic effect of the PAN@UiO66 scaffold and zirconia creates an amorphous-enriched region in the CSPE, providing uniform and abundant Lewis acid–base interaction sites, which reduce the crystallinity of the PEO-based solid electrolyte and enhance the diffusion and migration of lithium ions within the polymer. The components were physically characterized and electrochemically tested by using Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and energy-dispersive spectroscopy (EDS). The results indicate that the incorporation of PAN@UiO66 optimizes the lithium-ion transport behavior of PEO-based solid electrolytes and enhances their cycling stability. Specifically, at 60 °C, the lithium-ion transference number of the PAN@UiO66 nanofiber-enhanced composite solid polymer electrolyte (CSPE) increased from 0.20 to 0.40, the electrochemical voltage window expanded from 4.58 to 5.10 V, and the Li||Li symmetrical cell assembled with CSPE exhibited stable plating and stripping for over 670 h at a current density of 0.1 mA cm–2. The assembled LFP||Li coin cell delivered an initial discharge capacity of 149.81 mAh g–1 at 0.5C, with a capacity retention of 101.53% after 200 cycles. The LFP||Li pouch cell assembled with CSPE exhibited a discharge capacity of 113.21 mAh g–1 at 0.5C and stable cycling for 100 cycles, demonstrating the commercial potential of the composite solid-state electrolyte.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Lingfei Zhou,Mengqian Yang,Junxia Meng,Fangrui Wang,Chaohui Chen,Dehao Fu,Yingxiang Zhong,Tiankai Sun,Wenzhuan Hu,Quanxin Ma
The Li-rich oxides (LRMOs) are considered the most promising cathode materials due to their reversible anionic redox reaction and high reversible capacity. However, the irreversible release of surface oxygen gives rise to a range of issues, including significant first irreversible capacity loss, inferior rate performance, and serious capacity/voltage decay, which hinder their commercial applications. This study employs a nitrogen (N 2 ) assisted roasting technique to effectively construct oxygen vacancies (OVs) in Li 1.2 Mn 0.56 Ni 0.16 Co 0.08 O 2 (LLMO), aiming to mitigate the irreversible release of oxygen and alleviate voltage decay. X-ray photoelectron spectroscopy and electron paramagnetic resonance tests confirmed the successful introduction of OVs into the LLMO material, referred to as N-LLMO, during N 2 heat treatment. When used as a cathode in Li-ion batteries, N-LLMO exhibited a specific capacity of 258.3 mAh g −1 , an excellent capacity retention rate of 90.0 % after 200 cycles at 1.0 C, and a high-rate performance of 150.1 mAh g −1 at 5.0 C. These enhanced electrochemical performances can be attributed to the reduced irreversible release of O 2 through the OVs introduction, which facilitates the Li + diffusion dynamics and inhibits structural collapse during cycling. This study demonstrates that employing OVs strategy may pave the way for improving the overall electrochemical performance of LRMOs.
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2017
·Vol. 10
·期 7
·1385-1389
·
IF 7.226
Hao Wan,Ya Mao,Zixuan Liu,Qingyou Bai,Zhe Peng,Jingjing Bao,Gang Wu,Yang Liu,Deyu Wang,Jingying Xie
As the first step during discharge, the mass transfer of oxygen should play a crucial role in Li–air batteries to tailor the growth of discharge products, however, not enough attention has been paid to this issue. Herein, we introduce an oxygen-enriching cosolvent, 1,2-(1,1,2,2-tetrafluoroethoxy) ethane (FE1), into the electrolyte, and investigate its influence on the discharge performance. The incorporation of this novel cosolvent consistently enhances the oxygen solubility of the electrolyte, and improves the oxygen diffusivity following a volcano-shape trend peaking at 50 % FE1. It is interesting that the discharge capacities obtained with the investigated electrolytes share the similar volcano trends as the oxygen transport under 50 mA g carbon −1 and higher current densities. The improved oxygen diffusion could benefit the volumetric utilization of the air cathode, especially at the separator side, probably owing to the fast oxygen transport to moderate its concentration gradient. Our results demonstrate the importance of oxygen provision, which easily becomes the capacity-determining factor. Graphical Got Oxygen? The enhancement of oxygen provision is achieved by incorporating 1,2-(1,1,2,2-tetrafluoroethoxy) ethane as the cosolvent in the electrolyte. The oxygen's diffusivity, rather than solubility, exerts the principal effect on discharge performance of the Li–air battery, especially at higher current density, owing to the ameliorated oxygen's accessibility, which improves the utilization ratio of the whole air cathode.
✓ 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 MATERIALS SCIENCE
·
2023
·Vol. 58
·期 33
·13373-13386
·
IF 4.5
Shi Chonghua,Liu Xinyu,Fu Hang,Wang Jing,Yao Shaowei
As one of the most promising high-capacity anode materials for lithium-ion batteries, Sn-based anode materials have the advantages of high capacity (994 mAh g −1 ) and low price. But the anode material has large volume expansion during the cycle process, resulting in battery capacity attenuation. Therefore, carbon wrapping is used to alleviate this problem. In this work, SnO 2 nanoparticles are coated by electrospinning technology, and microspherical Sn@C composite materials are obtained after further heat treatment. The results show that when the content of SnO 2 nanoparticles is 0.13 g, the obtained Sn@C microsphere electrode material still has a high reversible discharge specific capacity of 616.90 mAh g −1 after 100 cycles at a current density of 100 mA g −1 . When the current density is 500 mA g −1 , the specific capacity is still as high as 558.20 mAh g −1 after 500 cycles, and the Sn@C microsphere electrode material exhibits excellent electrochemical performance. This provides an idea for developing high performance anode materials for lithium-ion batteries.
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2020
·
IF 3.421
Mingjie Du,Xiaoqing Tian,Ran Ran,Wei Zhou,Kaiming Liao,Zongping Shao
The cycling performance of lithium–sulfur (Li–S) batteries, which is a major parameter determining the practical application of such an advanced high-energy-density battery system (1675 mA h g–1), is strongly affected by the properties of the cathodic sulfur hosts. As a desirable sulfur host, it should possess high surface area, good electronic conductivity, and superior physisorption and chemisorption to polysulfides. Here, by taking advantage of the magnesiothermic denitriding technology, the graphitic carbon nitride (GCN) with a tunable nitrogen content, surface area, and pore volume has been designed as a sulfur host for high-performance Li–S batteries. With a nitrogen content of ∼6%, a surface area of 594 m2 g–1, and a pore volume of about 2 cm3 g–1, the GCN-based host can retain sulfur and allow its reversible convention within cathodic region, thereby delivering a high capacity of 852.2 mA h g–1 at 0.5 C with a low capacity decay of 0.12% per cycle within 300 cycles. This work provides a feasible way to design nitrogen-doped carbon materials with tunable nitrogen content and enlightens the host material design for practical Li–S batteries.
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2017
·Vol. 4
·期 23
·1700693
·
IF 4.279
Kailiang Liu,Hongguang Sun,Shanmu Dong,Chenglong Lu,Yang Li,Junmei Cheng,Jianjun Zhang,Xiaogang Wang,Xiao Chen,Guanglei Cui
The increasing interest in Li–O 2 battery arises from its unparalleled theoretical energy density. Nevertheless, the poor reversibility of cathode reaction and unstable characteristic of Li anode hinder its further application. To address these issues, a high-performance sandwich-structured quasisolid polymer electrolyte (QSPE) is designed to meet the requirement of both cathode and anode. For the first time, lithiated Nafion ionomer (Li-Nafion) is introduced into Li–O 2 cell to separate “catholyte” and “anolyte.” Redox mediator (RM) is introduced into gel-like catholyte, based on polymethymethacrylate, to achieve high capacity and reversibility. Polypropylene carbonate is chosen as solid-state anolyte for enhancing interface stability of lithium anode. It is demonstrated that the QSPE exhibits excellent permselectivity to block RM shuttling, as well as good ionic conductivity and high electrochemical window. A solution mechanism formation of discharge product is demonstrated in the Li–O 2 cell with QSPE and the RM works well for cycles at room temperature. This sandwich-structured design strategy will provide a new pathway to promote the properties of Li–O 2 battery.
✓ 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
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
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
危险品化学品经营许可证（带存储）