JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jiaxue Zhang,Ben Hu,Acheng Zhu,Yiming Qi,Yuyang Wang,Shichang Han,Tianyu Zhu,Jie Xu
Poly(ethylene oxide) (PEO)-based electrolytes are widely used for building solid-state lithium–sulfur (Li–S) batteries but suffer from poor lithium-ion (Li + ) transportation kinetics. Here, a lithium-sulfonated covalent organic framework (TpPa-SO 3 Li) was synthesized and functionalized as a Li + pump in a PEO-based solid-state electrolyte to fabricate robust Li–S batteries. The designed TpPa-SO 3 , Li with its porous skeleton and abundant lithium sulfonate groups not only provided iontransport channels but also enhanced the fast migration of Li + . The PEO composite electrolyte containing 5 %-TpPa-SO 3 Li exhibited a notable ionic conductivity of 6.28 × 10 −4 S cm −1 and an impressive Li + transference number of 0.78 at 60 °C. As a result, Li–Li symmetric batteries with the optimized PEO/TpPa-SO 3 Li composite electrolyte stably cycled for 300 h, with a minimal overpotential of only 100 mV at 0.5 mA cm −2 . Moreover, the customized solid-state Li–S batteries based on PEO/TpPa-SO 3 Li were stable for 600 cycles at 60 o C with a high Coulombic efficiency of approximately 98 %. This study provides a promising strategy for introducing covalent-organic-framework (COF)-based Li + pumps to build robust solid-state Li–S batteries.
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高影响因子
NEW CARBON MATERIALS
·
2023
·
IF 5.7
Xian-lan Ke,Yu-heng Lu,Jin-lun Wu,Ding-cai Wu
We report the fabrication of vulcanized cross-linked polystyrene grafted on carbon nanotubes (CNTs) for use as an advanced three-dimensional Li host. First, polystyrene was grafted from Br-modified CNTs to form brush-like structure by surface-initiated atom-transfer radical polymerization. Polystyrene grafted on carbon nanotubes was then cross-linked using a Friedel-Crafts reaction and finally vulcanized with sulfur. Vulcanized cross-linked polystyrene grafted on carbon nanotubes was used as a support for the Li metal, and its macro-, meso- and microporous structure increased Li ion transport, buffered the volume changes of the Li anode, and provided a high specific surface area to reduce local current density, which assisted rapid and uniform Li plating/stripping. At the same time, the homogenously distributed sulfur in the support reacted with Li to produce a Li 2 S-containing SEI layer, while the CNTs provided conductive pathways for the rapid transmission of electrons. As a result, a Li|Li symmetric cell using this anode material and a Cu current collector had a stable cycling performance of more than 500 h at a current density of 1 mA cm −2 . When LiFePO 4 was used as the cathode, a full cell had a high discharge capacity of 101 mAh g −1 with a capacity retention of 77% after 600 cycles at 1 C.
研究领域:
材料科学
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电化学
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电池技术
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Pengfei Sang,Jiahan Song,Wei Guo,Yongzhu Fu
Organosulfur polymers are a unique class of cathode materials for rechargeable lithium batteries. They are abundant, rich in structure, and easy for synthesis. Here, we report a new class of organosulfur polymers synthesized by condensation reactions between 1,3,5-benzenetrithiol (BTT) and elemental sulfur with three different molar ratios ( i.e. , 1:1.5, 1:3.0, and 1:4.5) in carbon disulfide solution without heating and additional catalyst. Removal of H 2 S leads to the linkage of S-S bonds, forming hyperbranched polymers. When the BTT: sulfur molar ratio is 1:4.5, the polymer has a high theoretical specific capacity of 901.7 mAh g −1 . We have studied their structures and compositions through a series of material characterizations, and conducted an in-depth discussion on their electrochemical behavior in rechargeable lithium batteries. Excellent cycling performance of these materials shows great potential for practical application.
研究领域:
材料科学
·
电化学
·
能源存储
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高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Liufeng Ai,Ziyang Chen,Shaopeng Li,Tiezhu Xu,Jinhui Zhang,Laifa Shen,Xiaogang Zhang
Li metal anode is considered to be the most potential battery anode due to its high theoretical capacity and low potential. However, Li dendritic growth hinders its practical application. Here, a stable Li-metal anode with a fluorinated hybrid layer is fabricated by a simple chemical-modification strategy. The stabilization of Li metal is attributed to the formation of chemical and mechanical stability hybrid protective layer consisting of bulk alloy and Li fluoride, which can effectively minimize the side reactions and suppress Li dendrite growth. With these advantages, the LiF/Li3Mg7-protected Li electrodes enable the Li||Li symmetric cell to maintain a stable overpotential of 25 mV at a capacity of 1 mAh cm–2 over 1800 h and enable the Li||LiFePO4 cell to a capacity of 134.5 mAh g–1 at 1 C for 200 cycles; the capacity retention rate is 98.6%.
研究领域:
材料科学
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电化学
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能源存储
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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
·
2025
·Vol. 65
·期 2
·e20062
·
IF 16.9
Yicheng Zeng,Yin Zhou,Fangze Liu,Hongbo Li
Understanding electrocatalyst-intermediate orbital interaction in oxygen evolution reactions (OER) is critical for designing high-performance lithium–oxygen (Li–O 2 ) batteries, yet remains a significant challenge. In this study, we employed a CdSe-based catalyst as a model cathode to deeply investigate the catalyst–intermediate interaction and its effect on OER activity. Compared to the 4d orbital electronic states of Cd in CdSe, electron transfer from CdSe to ZnS in the CdSe/ZnS heterojunction results in a downward shift of the Cd 4d suborbital energy levels. The differences in the Cd 4d orbital electronic states between CdSe and CdSe/ZnS cause distinct orbital interaction mode with LiO 2 intermediate, ultimately leading to variations in OER activity. Specifically, compared to the strong Cd 4d xy –O 2P x/y orbital interaction mode between CdSe and LiO 2 , the weaker Cd 4d z 2 –O 2P y orbital interaction mode between CdSe/ZnS and LiO 2 significantly reduces the activation energy of the rate-determining step, thereby enhancing OER activity. This finding provides theoretical guidance for the design of OER electrocatalysts in Li–O 2 batteries. Graphical We demonstrate that the OER performance of Li–O 2 batteries primarily depends on the orbital interaction mode between the catalyst and the intermediates. In contrast to the strong Cd 4d xy –O 2P x/y orbital interaction mode between CdSe and LiO 2 , the weaker Cd 4d z 2 –O 2P y orbital interaction mode between CdSe/ZnS and LiO 2 significantly reduces the charge activation energy barrier, thereby enhancing OER catalytic activity.
研究领域:
电化学
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材料科学
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储能
·
催化
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高影响因子
NATURE
·
2026
·Vol. 655
·期 8123
·624-630
·
IF 56.1
Yang Wujie,Cai Jianfeng,Chen Aoyuan,Li Xiang,He Ping,Zhou Haoshen
Ether-based electrolytes have shown great success for lithium metal electrodes 1 , 2 , 3 , 4 , 5 . However, during the charging process of high-voltage full cells, the desolvation of solvents and anions to accommodate Li ions released from the positive electrode exacerbates oxidative decomposition of the electrolyte 6 . In addition, the continuous consumption of components over extended cycling substantially alters the solvation structure, resulting in deteriorating redox stability. Here we incorporate a targeted ligand anti-solvent (TLAS) into an anion-rich ether-based electrolyte. The TLAS barely participates in the solvation of Li + owing to its relatively weaker association ability in a static state. Under the strong electric field of high-voltage full cells, the orientation and distribution of the TLAS undergo substantial transformation, with coordination ability activated on the positive electrode surface. The TLAS-mediated dynamic solvation behaviour bypasses the inherent decoordination and recoordination of solvents and anions on the positive electrode in conventional electrolyte systems, thus minimizing electrolyte reconstruction and interphase deterioration. Leveraging this gradient solvation electrolyte, we develop a 450 Wh kg −1 lithium metal pouch cell that achieves a long cycle life exceeding 750 cycles (80% capacity retention). Furthermore, we validated a lithium metal pouch cell with a high energy density of 605 Wh kg −1 , which achieves 150 cycles with 96% capacity retention. This gradient solvation strategy provides a feasible pathway of electrolyte engineering for metal-ion batteries.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Feng Shi,Jinze Wang,Long Chen,Sen Jiang,Deqin Zeng,Shuoqing Zhang,Sheng Gao,Lili Zhang,Menghua Li,Liping Wang,Hailin Zhu,Ruhong Li,Yuhai Guo,Yuan Yu
Polyethylene (PE) separators are widely applied in Li-metal batteries (LMBs) for their chemical stability. However, their interactions with electrolyte components remain poorly understood. Here, we propose that the electron-deficient H atoms in C H bonds of PE may interact with anion lone pairs, thereby influencing local anion distribution and solid electrolyte interphase (SEI) formation. To address this, we propose an electron localization strategy by substituting H with F. In C F bond, the strong electron-withdrawing nature of F induces high electron localization, which makes the F atom less prone to gaining or losing electrons. This suppresses electron exchange and minimizes orbital overlap with anions, weakening the separator-anion interaction. Consequently, a C-F-rich polytetrafluoroethylene (PTFE) separator PTFE weakens separator-anion interactions, facilitating anion transport toward the Li interface and favoring anion-derived decomposition, contributing to the formation of an inorganic-rich SEI. As a result, Li||Li symmetric cells employing PTFE exhibit stable Li plating/stripping over 2800 h with low overpotential (< 35 mV) at 0.1 mA cm −2 . Moreover, 4.4 V Li||LiNi 0.8 Co 0.1 Mn 0.1 O 2 cells with PTFE retain over 80% of their initial capacity after 470 cycles at 1C, exceeding the 270-cycle lifespan of PE. This work proposes a rational separator design strategy for engineering stable interfaces in safe, long-lasting LMBs. Download: Download high-res image (179KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Shun Wang,Yunting Wang,Xiaoye Zhou,Chaojie Liu,Yongyang Zhu
Nanoengineering has proved effective in tailoring thermodynamics and kinetics of LiBH 4 and improving its (de)hydrogenation under mild conditions. Constructing nanosized LiBH 4 on 2D graphene has been reported to enhance loading efficiency and hydrogen capacity. However, the chemical inertness of graphene makes it hard to alter the intrinsic characteristics of LiBH 4 , leading to limited performance improvement. Moreover, the structural stability of loaded LiBH 4 needs enhancement for longer cycle life. Herein, we develop a fluorinated porous graphene host in which the Li-philic fluorine atoms induce Li vacancies in LiBH 4 , reducing the reaction enthalpy and energy barrier for (de)hydrogenation; meanwhile, LiF formed in-situ acts as an interfacial bridge that stabilizes the nanostructure. An appreciable hydrogen release is achieved below 250 °C, with high capacity retention after 30 cycles. In addition, the porous channels ensure rapid hydrogen diffusion and superior kinetics in the compacted state, yielding a competitive volumetric hydrogen storage density of 76.2 g L −1 that is higher than liquefied hydrogen (~70 g L −1 ). This work presents feasible schemes for optimizing hydrogen storage performance of LiBH 4 and offers fresh insights on interfacial interaction mechanisms.
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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Nasi Wei,Huawei Lei,Yu Du,Zefeng Ou,Xi Chen,Chen Xia,Xunying Wang,Baoyuan Wang,Guokun Ma,Jinming Guo,Hao Wang,Wenjing Dong
Owing to the resistance switching behavior, memristors have been proven to have significant potential applications for memories and biological nociceptor simulation. Oxygen vacancy is one of the key factors influencing the resistance switching behavior of oxide-based memristors, and its concentration significantly impacts both the switching voltage and the cycling stability of the memristor. In this study, the concentration of oxygen vacancy is synergistically modulated by introducing Li doping into MgO as well as an AlOx interlayer by using Al as the top electrode. The effects of different Li-doping concentrations on the performance of the MgO-based memristors are investigated. It is found that a moderate amount of Li doping optimizes the oxygen vacancy concentration of MgO, thereby enhancing its cycling stability and enabling a low SET voltage. The device exhibits a retention of 104 s at 358 K and is capable of operating at temperatures as low as 100 K. The resistance switching mechanism of the device assisted by the AlOx interlayer is discussed. The synaptic plasticity, including long-term potentiation/depression, paired-pulse facilitation, and spike-timing-dependent plasticity, is investigated. Biological nociceptor behaviors, such as threshold, relaxation, and sensitization, have been successfully simulated by the Li-doped MgO-based memristor. These studies not only offer alternative approaches for designing future electronic devices but also serve as a reference for utilizing memristors in bionic applications.
研究领域:
忆阻器器件
·
神经形态工程
·
仿生电子学
·
阻变存储器
·
神经科学工程
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高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Biyi Xu,Wenlong Li,Huanan Duan,Haojing Wang,Yiping Guo,Hua Li,Hezhou Liu
This paper proposes a strategy to stabilize the garnet/Li interface by introducing Li 3 PO 4 as an additive in garnet-type Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 . The Li 3 PO 4 -added Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 electrolyte exhibits a room-temperature Li-ion conductivity of 1.4 × 10 −4 S cm −1 , which is less than that of the Li 3 PO 4 -free counterparts (4.6 × 10 −4 S cm −1 ). However, the presence of Li 3 PO 4 improves the interfacial compatibility and suppresses Li-dendrite formation during Li-metal plating/stripping. The symmetric Li/garnet/Li cells with Li 3 PO 4 -added Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 have been successfully cycled at a current density of 0.1 mA cm −2 at 60 °C for 60 h; on contrast, the control cells with Li 3 PO 4 -free Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 display noisy potential with large voltage polarization and get short-circuited completely after 33-h cycling under the same operating condition. The outstanding interface stability can be attributed to the in situ reaction of the Li flux with Li 3 PO 4 to form a self-limiting and ion-conducting interphase, Li 3 P, which is confirmed experimentally.
研究领域:
材料科学
·
电化学
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高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Wang Hangchao,Yang Yali,Gao Chuan,Chen Tao,Song Jin,Zuo Yuxuan,Fang Qiu,Yang Tonghuan,Xiao Wukun,Zhang Kun,Wang Xuefeng,Xia Dingguo
To improve the interface stability between Li-rich Mn-based oxide cathodes and electrolytes, it is necessary to develop new polymer electrolytes. Here, we report an entanglement association polymer electrolyte (PVFH-PVCA) based on a poly (vinylidene fluoride-co-hexafluoropropylene) (PVFH) matrix and a copolymer stabilizer (PVCA) prepared from acrylonitrile, maleic anhydride, and vinylene carbonate. The entangled structure of the PVFH-PVCA electrolyte imparts excellent mechanical properties and eliminates the stress arising from dendrite growth during cycling and forms a stable interface layer, enabling Li//Li symmetric cells to cycle steadily for more than 4500 h at 8 mA cm −2 . The PVCA acts as a stabilizer to promote the formation of an electrochemically robust cathode–electrolyte interphase. It delivers a high specific capacity and excellent cycling stability with 84.7% capacity retention after 400 cycles. Li 1.2 Mn 0.56 Ni 0.16 Co 0.08 O 2 /PVFH-PVCA/Li full cell achieved 125 cycles at 1 C (4.8 V cut-off) with a stable discharge capacity of ~2.5 mAh cm −2 .
研究领域:
材料科学
·
电化学
·
电池技术
·
聚合物化学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Zheng Ling,Changrui Shi,Feng Li,Yixuan Fu,Jiafei Zhao,Hongsheng Dong,Yamei Yang,Hang Zhou,Shuai Wang,Yongchen Song
Hydrate-based desalination is an attractive and energy-effective method. In order to obtain high water recovery and purity, the desalination and Li + enrichment performance were examined using single-stage desalination via graphite-promoted cyclopentane (CP) hydrate formation. LiCl, LiBr and LiI aqueous solutions with concentration ranging from 0.01 to 0.6 mol/L were used as brine. The rate for CP hydrate formation is determined by concentration, independent of the type of used salts. Halide ions were found to have the different capability in hindering CP hydrate-based desalination, with an order of Cl − < Br − < I − . The desalination efficiency was improved with increased concentration. Water recovery of 40% can be obtained in 1 h reaction, demonstrating the high efficiency of hydrate-based desalination. The desalination efficiency remains constant at around 70% over 24 h reaction, which can be dramatically enhanced by multi-stage desalination. The graphite powder, as the promoter for hydrate formation shows impressive recycling stability. The finding in this study would be of great help for developing effective desalination processes to produce fresh water and enrich high-value salts via CP hydrates.
研究领域:
化学工程
·
环境科学
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高影响因子
危险品化学品经营许可证（带存储）