ACS Applied Energy Materials
·
2021
·
IF 6.024
Kaixuan Cui,Wang Zhao,Dongmei Zhou,Shengwei Li,Chunrong Liu,Ping Li,Xuanhui Qu
The corrosion of a liquid Sb–Sn alloy on a positive current collector (PCC) can seriously affect the performance of Li||Sb–Sn liquid metal batteries (LMBs) and hinder their industrial applications. This work systematically investigated Ti, Mo, and W as the PCCs of Li||Sb–Sn LMBs corrosion behaviors and electrochemical properties. The corrosion mechanism and cell performance recession reason are illuminated based on compatibility analysis and electrochemical measurements. Ti and Mo are more easily dissolved in the liquid Sb–Sn alloy than W, forming Ti–Sb–Sn and Mo–Sb–Sn corrosion products. The average corrosion rates of Ti, Mo, and W in the liquid Sb-Sn alloy are 0.105, 0.068, and 0.014 mm/a, respectively. These corrosion behaviors not only affect the cell voltage and capacity to varying degrees but also may cause potential security liability. Hence, W is an admirably stable PCC of Li||Sb–Sn LMBs, which can also serve as an electroconductive and corrosion-resistant protective coating to reduce cost and solve the forming problem.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Yujie Wang,Mingyu Zhang,Yuxuan Zhang,Yafeng Wang,Wenxin Liu,Chujie Yang,Veniamin Kondratiev,Feixiang Wu
Metal fluoride–lithium batteries have been viewed as very promising candidates for next-generation rechargeable batteries with higher energy densities. However, the intrinsic insulating properties of metal fluoride cathode lead to the poor reaction kinetics and unsatisfactory electrochemical performance. Herein, a honeycombed CoF2@C nanocomposite with a high specific surface area up to 180.4 m2 g–1, in which the nanosized CoF2 particles with size of 5–25 nm are evenly embedded in the honeycombed carbon framework, is prepared by the low-temperature fluorination of honeycombed Co@C nanocomposite precursor. As expected, the as-produced CoF2@C nanocomposite can deliver a high-capacity utilization of 365 mAh g–1 and an average capacity retention of 81.9% over 300 cycles at a current density of 110 mA g–1, as well as a reasonable capacity of 205 mAh g–1 at 1100 mA g–1. Such excellent electrochemical performance is due to the unique configuration that achieves the nanoconfinement of conversion reaction in the metal fluoride cathode. To be specific, on the one hand, the honeycombed structure provides uniformly isolated nanospace to inhibit the volume expansion and product agglomeration in the conversion reaction. On the other hand, the excellent reaction kinetics is attributed to the three-dimensional electron and ion conduction pathway, that is, the electrons are conducted through the honeycombed carbon walls, while Li+ are transferred via the interconnected honeycomb channels, facilitating the high-capacity utilization.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Zhunzhun Ma,Weixin Qian,Haitao Zhang,Hongfang Ma,Qiwen Sun,Weiyong Ying
Fischer–Tropsch-to-Olefins (FTO) over iron-based catalysts is a promising process for the production of light olefins from a non-petroleum source. However, the catalytic mechanism is unclear because of the variation in the iron phase during the reduction and activation processes and the complex iron phase composition under the reaction conditions. A series of Li-promoted FeMnMgO x catalysts is synthesized using co-precipitation and impregnation methods, after which the effect of promoters on the evolution of the iron phase, chemisorption, and FTO performance are analyzed. The results demonstrate that Mg enhances dissociative CO adsorption and hydrogen adsorption, improving the FTO activity. Mg facilitates the dispersion of α-Fe 2 O 3 and suppresses the carbonization , which weakens the chain propagation, encourages the formation of short-chain hydrocarbons, and increases the selectivity of light olefins . Li also enhances dissociative CO adsorption and increases CO conversion. Moreover, Li facilitates the formation of the ε'-Fe 2.2 C phase, which reveals a higher FTS activity and better C–C coupling ability than the χ-Fe 5 C 2 phase. This results in a decrease in CO 2 and increase in light olefins . At the optimal Li loading, the FeMnMg-0.75Li sample displays the highest space time yield of light olefins at 355 g/(kg cat ·h).
研究领域:
化学工程
·
催化
·
材料科学
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2020
·
IF 5.604
J. Zhao,W. Guo,Y. Fu
Lithium–selenium (Li–Se) batteries are promising high-energy battery systems. However, they suffer from shuttling effects of soluble lithium polyselenide intermediates and poor cycling stability. Herein, we use diphenyl diselenide (DPDSe) as an electrolyte additive to alter the redox reactions of selenium. The Li|Se-DPDSe cell shows the maximum discharge capacity of 643 mAh/g at 0.3 °C in the first few cycles, which is 94.7% of the theoretical specific capacity. After 250 cycles, it still maintains a reversible capacity of 602 mAh/g, possessing 93.6% of the initial capacity with Coulombic efficiency of almost 100%. DPDSe brings a new electrochemical reduction pathway leading to a high discharge voltage plateau. In the charge process, some selenium atoms are integrated into the structure of DPDSe to form diphenyl triselenide which adheres to carbon nanotubes therefore reducing the loss of active material. This study reveals intriguing electrochemical reactions of organoselenides and provides guidance for the optimization of electrolyte for stable Li–Se batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yicheng Zhong,Yuanmao Chen,Yifeng Cheng,Qinglu Fan,Huajun Zhao,Huaiyu Shao,Yanqing Lai,Zhicong Shi,Xi Ke,Zaiping Guo
Lithium metal anodes (LMAs) are critical for high-energy-density batteries such as Li–S and Li–O2 batteries. The spontaneously formed solid electrolyte interface on LMAs is fragile, which may not accommodate the cyclic Li plating/stripping. This usually will result in a low coulombic efficiency (CE), short cycle life, and potential safety hazards induced by the uncontrollable growth of lithium dendrites. In this study, we fabricate a Li alginate-based artificial SEI (ASEI) layer that is chemically stable and allows easy Li ion transport on the surface of LMAs, thus enabling the stable operation of lithium metal anodes. Compared to bare LMAs, the ASEI layer-protected LMAs exhibit a more stable Li plating/stripping behavior and present effective dendrite suppression. The symmetric Li∥Li cells with the ASEI layer-protected LMAs can stably run for 850 and 350 h at current densities of 0.5 and 1 mA cm–2, respectively. Additionally, the LiFePO4∥Li full cell with the ASEI layer-protected LMA exhibits a capacity retention of about 94.0% coupled with a CE of 99.6% after 1000 cycles at 4 C. We believe that this study of engineering an ASEI brings a new and promising approach to the stabilization of LMAs for high-performance lithium metal batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Science Advances
·
2026
·Vol. 12
·期 25
·
IF 13.9
Xingwu Zhai,Yuchun Liu,Mi Luo,Tianchen Wei,Hang Wang,Jing Zhang,Leyi Su,Zhaodi Fan,Zhixin Sun,Zhuohui Zhang,Liang Wu,Hongjun Zhang,Bangjiao Ye,Min Zhou
The slow kinetics of lithium carbonate (Li 2 CO 3 ) nucleation/decomposition hinder voltage gap minimization in lithium-carbon dioxide (Li-CO 2 ) batteries. Although symmetry-broken cation motifs can enhance reactivity, designing optimal catalysts remains challenging. Moving beyond cation-centric views, we recognize anions as active participants that regulate charge and stabilize intermediates, yet their degradation worsens the activity-stability trade-off. To address this, we develop a dual Φ descriptor quantifying anion-cation orbital coupling and reconstruction energy. It establishes a volcano correlation with the voltage gap in metal sulfides, showing that symmetry-broken units optimally balance binding and stability. Guided by this, we synthesize oriented WS 2 rich in C 4v configurations, achieving a record-low gap of 0.76 volts and superior cycling (>1268 hours) among dichalcogenides. This work shifts the paradigm from cation-only tuning to synergistic anion-cation design, repositioning anions as co-catalytic architects. By linking orbital insights to performance, we provide a universal descriptor for developing efficient, stable Li-CO 2 batteries.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2026
·
IF 3.1
Zhang Yanxin,Sun Zhenying,Liu Xuehua,Zhang Chuan,Liu Zhongzhu,Lin Chunfu
Niobate Li + -storage anode materials, especially TiNb 2 O 7 (TNO), have garnered significant attention for their intrinsically safe characteristics and substantial capacities as well as fast and stable electrochemical kinetics. However, several limitations hinder the application of TNO in lithium-ion battery anodes, chief among them being its high niobium content. Herein, by adjusting the ratio of Ti and Nb elements in TNO, a novel low-niobium Ti 1.3 Nb 1.76 O 7 (LN-TNO) anode material with a micro-sized porous spherical morphology and oxygen-vacancy proportion of 2.8% has been exploited. The oxygen vacancies provide more active sites for electrochemical reactions, enabling impressive rate capability with a 5 C to 0.1 C capacity retention of 70.4%. LN-TNO demonstrates stable cycling performance with 86.5% capacity retention after 250 cycles at 5 C. Even at − 10 °C, it delivers a super high-rate behavior with 46.7% capacity retention from 5 C to 0.1 C, along with stable cycling performance retaining 90.0% of its capacity upon 500 cycles at 5 C. Owing to the outstanding properties mentioned above, LN-TNO demonstrates promising potential for practical applications in high-performance Li + storage. Graphical abstract The alternative text for this image may have been generated using AI.
✓ 已验证
DOI
高影响因子
Journal of the American Chemical Society
·
2026
·
IF 16.6
Junwu Sang,Borui Liu,Shanshan Jiang,Suzhe Liang,Tingting Liu,Kaiyong Tuo,Hongrui Huang,Luting Xie,Yuran Yu,Guosheng Shao,Xueliang Sun,Changhong Wang
Tellurium (Te), with high volumetric capacity (2621 mAh cm–3) and decent electronic conductivity (2000 mS cm–1), has emerged as a promising cathode material for future lithium metal batteries. However, all-solid-state batteries (ASSBs) with Li–Te chemistry remain largely unexplored. Here, we construct a nanostructured Te91@LPSC-350 composite in which ∼10 nm Te domains are uniformly embedded within an amorphous Li5.5PS4.5Cl1.5 (LPSC) matrix, featuring an ultrahigh Te content of 91 wt % and intimate solid–solid contact. This nanocomposite exhibits high electronic conductivity (121 mS cm–1) and appreciable ionic conductivity (0.1 mS cm–1, after lithiation), enabling ultrafast and highly reversible Te redox reactions in the solid-state. Resultantly, ASSBs with the Te91@LPSC-350 nanocomposite cathode deliver their theoretical capacity of 420 mAh g–1 at 0.25 mA cm–2, maintain ultralong cycling stability over 13,000 cycles at 12.5 mA cm–2, and achieve a high areal capacity of 21 mAh cm–2. Furthermore, all-solid-state Li–Te pouch cells with an energy density of 1100 Wh L–1 (based on Li and Te91@LPSC-350) retain 81% of their initial capacity after 200 cycles under 2.5 MPa. Notably, Te can be directly recovered by exploiting its 100% selectivity in a vaporization–condensation process. These results demonstrate that all-solid-state Li–Te batteries are a safe, energy-dense, and sustainable energy storage technology.
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
·
IF 15.7
Zhou Yin,Yin Kun,Huang Yingying,Li Jiapei,Zhu Anquan,Lin Dewu,Gan Guoqiang,Zhang Jianfang,Liu Kai,Zhang Tian,Liu Kunlun,Luan Chuhao,Yang Huawei,Chen Hou,Guo Shaojun,Zhang Wenjun,Hong Guo
Charge overpotential for oxygen evolution reaction is a crucial parameter for the energy conversion efficiency of lithium-oxygen (Li-O 2 ) batteries. So far, the realization of low charge overpotential via catalyst design is a grand challenge in this field, which usually exceeds 0.25 V. Herein, we report an orbital reconstruction strategy to significantly decrease the charge overpotential to the low 0.11 V by employing PdCo nanosheet catalyst under a low-loading mass (0.3 mg/cm 2 ) and capacity (0.3 mAh/cm 2 ). Experimental and theoretical calculations demonstrate that the precise d-d orbital coupling ( d xz - d xz , d yz - d yz and d z 2 - d z 2 ) between the low-electronegativity Co and Pd leads to the reconstruction of Pd 4 d orbitals in PdCo nanosheets, thereby resulting in a downward shift of all the three active Pd 4 d orbitals ( d z 2 , d xz and d yz ) relative to that of Pd nanosheets. Furthermore, the highest energy level of the Pd 4 d z 2 orbital in PdCo is lower than the lowest energy levels of the Pd 4 d xz and 4 d yz orbitals in pure Pd, significantly decreasing the charge activation energy and achieving a highest energy conversion efficiency of 91%. This finding provides the orbital-level tuning into rational design of highly efficient electrocatalysts for Li-O 2 batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Chaonan He,Hongyan Wang,Lulu Wang,Song Xue
The utilisation of lithium metal electrodes in high-energy-density rechargeable batteries is impeded by two crucial obstacles: the low mobility and thermal stability of polyolefin separators. Aiming at the structural defects of traditional polyolefin separators, this study proposes a surface functionalization modification strategy based on anionic or cationic surface modified silica nanoparticles. The surface grafting reaction induced by the silane coupling agent has been demonstrated to be an effective method for the construction of sulfonic acid (-SO 3 H) and amino (−NH 2 ) functional groups on the surface of silica nanoparticles. The resultant functionalised nanoparticles (SiO 2 -SO 3 H/SiO 2 -NH 2 ) have been shown to possess ion selectivity. Furthermore, based on the self-polymerization characteristics of dopamine, a uniform polydopamine (PDA) interface layer was constructed on the surface of polypropylene (PP) separator to improve the hydrophilic properties of polyolefin separator. Subsequently, the functionalized ionic silica particles were loaded on the surface of PDA modified PP separator by impregnation method, and the effects of different functional groups on the performance of separator and battery were systematically studied. The results showed that the wettability and flame retardancy of PP separator grafted with -SO 3 H group surpassed those of the pristine PP separator and -NH 2 group modified system. Notably, the -SO 3 H modified separator exhibits exceptional electrolyte absorption (>200 %) and a remarkably low contact angle (12.6°), while concurrently attaining a lithium ion transference number (t Li + ) of up to 0.77. In the LiFePO 4 ||Li battery system, the separator can output a discharge specific capacity of 161 mAh g −1 at 1C rate, which is 12.3 % higher than that of the unmodified PP separator (142.5 mAh g −1 @ 1C, LiFePO 4 ||Li). In addition, the battery assembled by the sulfonic acid-modified separator has a content retention rate of >95 % after 300 cycles, showing excellent rate performance and cycle stability. This synergistic strategy based on interfacial anion and cation functionalization and nanoparticle composite modification provides an innovative technical path for the development of lithium battery separators with high lithium ion migration and thermal safety.
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
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yu Wu,Wenting Ji,Zhihua Xu,Yuqin Huang,De Li,Yuanchuan Li,Yong Chen
In Li-ion batteries (LIBs), the phenomenon of memory effect has only been found in a few two-phase electrode materials such as olivine LiFePO4, anatase TiO2, and Al-doped Li4Ti5O12, which is attributed to the Li-ion exchange between adjacent vacant Li and Fe sites in LiFePO4 and the Al-ion exchange between 8a and 16c sites in Al-doped Li4Ti5O12. Here, the Al-doped LiCrTiO4 was successfully synthesized by the spray-drying method and high-temperature sintering, which also exhibits the memory effect during only the charging process. The X-ray diffraction (XRD) and electrochemical results indicate that the saturated Al-doping level corresponds to the Al:Ti ratio of ca. 0.25 for LiCrTiO4, and the memory effect increases with the Al-doping level evidently. According to the in situ XRD and magic-angle spinning nuclear magnetic resonance results, the Al3+ ions are doped at the 8a sites, the Li ions hop between 8a and 16c sites during the charging and discharging processes, and the Li ions further hop from the 16c site to the 16d site after deeply discharging and move back in the subsequent charging process. Therefore, the memory effect of Al-doped LiCrTiO4 should originate from the reversible exchange of Li ions between 16c and 16d sites, and it is a common strategy to cause the memory effect in LIBs by inducing another reversible ionic migration in the electrode materials to affect the normal Li-ion extraction/insertion.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2012
·
IF 4.525
Junfei Liang,Yue Zhao,Lin Guo,Lidong Li
A flexible free-standing graphene/SnO2 nanocomposites paper (GSP) was prepared by coupling a simple filtration method and a thermal reduction together for the first time. Compared with the pure SnO2 nanoparticles, the GSP exhibited a better cycling stability, because the graphene with high mechanical strength and elasticity can work as a buffer to prevent the volume expansion and contraction of SnO2 nanoparticles during the Li+ insertion/extraction process. Meanwhile, compared with single graphene paper, the GSP showed a higher capacity because of the hybridizing with higher capacity SnO2 nanoparticles. The excellent electrochemical performance of the GSP as an anode material in Li-ion battery was obtained. The as-prepared GSP shows a great potential for flexible Li-ion batteries.
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
危险品化学品经营许可证（带存储）