Advanced Sustainable Systems
·
2021
·Vol. 6
·期 3
·2100386
·
IF 6.271
Qin Dong,Tao Wang,Ruiyi Gan,Cheng Tong,Rui Xu,Minhua Shao,Cunpu Li,Zidong Wei
Lithium-metal batteries (LMBs) have long been considered the “holy grail” of next-generation energy storage systems due to the unique advantages of Li metal, such as having a high specific capacity and the lowest potential. Unfortunately, the practical application of LMBs is seriously hindered by the uncontrollable growth of dendritic Li. To address this issue, a positively charged layer (PCL) with freely moving multication sidechains is successfully polymerized on a commercial polypropylene (PP) separator. The cationic groups on the sidechains of the polymer realize dendrite-free Li deposition based on the “dynamic tip-occupying electrostatic shield” effect. LMBs with improved cycling stability and rate performance can be achieved by using a PP- N,N,N,N”,N ”-pentamethyldiethylenetriamine (PP-PMDT) separator. All the results demonstrate that this strategy for constructing a flexible “electrostatic shield layer” can successfully eliminate the formation of Li dendrites while retaining the desired performance.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 37
·2203104
·
IF 32.086
Zhengqiang Hu,Fengling Zhang,Yi Zhao,Huirong Wang,Yongxin Huang,Feng Wu,Renjie Chen,Li Li
Although aqueous Zn batteries have become a more sustainable alternative to lithium-ion batteries owing to their intrinsic security, their practical applications are limited by dendrite formation and hydrogen reactions. The first application of a rare earth metal type addition to Zn batteries, cerium chloride (CeCl 3 ), as an effective, low-cost, and green electrolyte additive that facilitates the formation of a dynamic electrostatic shielding layer around the Zn protuberance to induce uniform Zn deposition is presented. After introducing CeCl 3 additives, the electrochemical characterizations, in situ optical microscopy observation, in situ differential electrochemical mass spectrometry, along with density functional theory calculations, and finite element method simulations reveal resisted Zn dendritic growth and enhanced electrolyte stability. As a result, the Zn–Zn cells using the CeCl 3 additive exhibit a long cycling stability of 2600 h at 2 mA cm −2 , an impressive cumulative areal capacity of 3.6 Ah cm −2 at 40 mA cm −2 , and a high Coulombic efficiency of ≈99.7%. The fact that the Zn–LiFePO 4 cells with proposed electrolyte retain capacity significantly better than the additive-free case is even more exciting.
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
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiangni Zhang,Shanchen Yang,Zhaohui Wang
A bio-based, electrostatic shielding, ion-sieving separator is proposed by surface amine functionalization of nanocellulose paper to stabilize Zn metal anode, for the first time. Such cationic nanocellulose separator exhibits uniformly and narrowly distributed nanopores with immobilized cationic groups, which yields a homogenous current distribution at the separator/electrode interfaces, inhibits SO 4 2− migration, enhances the Zn 2+ transference number to 0.73, and generates a zincophobic repulsion layer to eliminate the “tip effect”. Unlike pristine nanocellulose separator, the combination of ion-sieving nanofibrous network and immobilized electrostatic shielding functional groups lead to smoother and more compact Zn deposition/stripping behavior during repeated cycles. Hence, highly reversible Zn metal anodes and durable supercapacitors are realized: the symmetric Zn//Zn cells can last 180 h under a high current density of 20 mA cm −2 with a high capacity of 10 mAh cm −2 , and the Zn//activated carbon supercapacitor shows a discharge capacity of 104.3 mA g −1 at 1 A g −1 with a capacity retention ratio of ∼ 80% after 2500 cycles. The surface charge engineering approach constitutes a practical separator modification strategy toward even Zn deposition and a promising route for the development of aqueous Zn-based energy storage devices with improved sustainability and enhanced cycling stability.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yue Wang,Hao Jiang,Yuhan Zhang,Zhichao Song,Zijie Chen,Kunyan Sui,Wenxin Fan,Pengfei Qi
Harvesting ocean salinity energy has attracted large attentions based on different kinds of asymmetric ionic membranes. Gradient polyelectrolyte hydrogels demonstrated superior power generation capacity due to their abundant charged groups and rectification behaviors. However, they generally suffer from the electrostatic screening and dramatic swelling, leading to unsatisfactory energy conversion performance. Here, an anti-swelling, salt-tolerant gradient polyanion hydrogel is reported for high-efficiency osmotic energy conversion. The gradient polyanion hydrogel is prepared by ultraviolet (UV) induced copolymerization of anionic monomer and aromatic monomer. Benefiting from the mutual electrostatic interaction and π-π conjugation interaction, the gradient polyanion hydrogel presents the outstanding anti-electrostatic screening and anti-swelling performance. As a result, they can maintain excellent cation selectivity and ionic diode effect for providing an ultrahigh power density of 16.4 W/m 2 when mixing artificial seawater and river water. This new salt-tolerant gradient polyelectrolyte hydrogel provides a promising way to recover energy from seawater and wastewater.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
RARE METALS
·
2024
·Vol. 43
·期 10
·5060-5069
·
IF 9.6
Zhang Fan,Li Si-Qi,Xia Li-Nan,Yang Chao,Li Lei,Wang Kai-Ming,Xu Chen-Liang,Feng Yuan-Yuan,Zhao Bin,Shen Fei,Han Xiao-Gang,Zhu Ling-Yun
Owing to uncontrolled and uneven electrodeposition and side reactions, Zn metal anodes inevitably suffer from issues such as dendrite growth, hydrogen evolution reactions, and surface passivation. This paper proposes an efficient strategy to address these critical issues for realizing long-life and high-capacity aqueous zinc-ion hybrid supercapacitors (ZHSCs) by incorporating low-concentration (0.05 mol·L −1 ) redox RbI electrolyte additives. Specifically, rubidium cations have the ability to influence the negative Zn electrode surface via an electrostatic shielding mechanism, effectively protecting the electrode and minimizing undesired side reactions. In an aqueous solution, iodide anions actively solvate Zn 2+ ions by stabilizing and modulating the solvation shell surrounding Zn 2+ . Moreover, the presence of iodide ions promotes the uniform deposition of Zn 2+ species by selective adsorption onto the electrode surface. The synergistic effect of the electrostatic shielding and halogen ions enables the realization of aqueous symmetric Zn||Zn cells with a substantial cycle life of more than 2000 h. Additionally, when applied to commercial activated carbon (AC), the proposed strategy facilitates the development of aqueous ZHSCs, exhibiting high specific capacitances (148.8 F·g −1 at 4 A·g −1 ) and ultra-long cycling stability. Graphical abstract
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Jingzhe Chen,Sateng Li,Fuxiang Li,Weiyu Sun,Zixiao Nie,Bing Xiao,Yonghong Cheng,Xin Xu
Aqueous zinc-ion batteries (AZIBs) are poised to play a pivotal part in meeting the growing demands for energy storage and powering portable electronics for their superior security, affordability, and environmentally friendly characteristics. However, the detrimental side reactions occurring at the zinc anode and the dendrite caused by uneven zinc plating/stripping have greatly compromised the cycling life of AZIBs, thereby impeding their practical prospects. In this study, the interfacial comodulation strategy was employed by combining the “electrostatic shielding” effect of cations with the characteristic adsorption of anions. Two molar ZnSO4 served as the matrix, and sodium hydroxyethyl sulfonate (SHES) was selected as a low-cost, nontoxic additive. Experimental results confirm that SHES and zinc anode exhibit robust interactions that lead to the formation of an electrostatic shield and a dynamic adsorption layer at the interface, thereby suppressing hydrogen evolution and corrosion. The combined “electrostatic shielding” effect of sodium ions and the robust characteristic adsorption of hydroxyethyl sulfonate anions serve to guide the directed three-dimensional (3D) diffusion of Zn2+, facilitating rapid, stable, and uniform deposition of zinc. Due to these effects, incorporating 0.2 M SHES as an additive extends the cycle life beyond 3600 h and enables a highly reversible process of deposition and stripping in symmetric cells. Additionally, the Zn–Cu half-cell exhibits reliable cycling for over 1400 cycles, achieving an average Coulombic efficiency of 99.6%. Moreover, the introduction of this additive substantially enhances the performance of Zn-MnO2 and Zn-NH4V4O10 full cells. This study demonstrates the practical feasibility of achieving anodes with high reversibility in AZIBs through the implementation of a strategy that involves anion adsorption at the interface, which holds paramount significance for the practical application of AZIBs.
研究领域:
能源存储
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材料科学
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电化学
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电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Dequan Huang,Cuihong Zeng,Menghao Liu,Xiaorong Chen,Yahao Li,Sijiang Hu,Qichang Pan,Fenghua Zheng,Qingyu Li,Hongqiang Wang
A lithium metal battery (LMBs) is an excellent battery system for advanced electrochemical energy storage. However, the growth of lithium dendrites, the accumulation of inactive lithium, and the side reactions between lithium metal and electrolytes limit the cycling stability of LMBs. Herein, we introduce KI additive into lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)/ether-based electrolyte and lithium hexafluorophosphate (LiPF 6 )/ester-based electrolyte for cycling stability improvement of LMBs. Cu-mesh@Ag||Li half-cell with 0.01 M KI additive exhibits a Coulombic efficiency as high as 98.8 % over 200 cycles. The improved performance due to the electrostatic shielding effect formed by K + at low concentration and the rapid recovery of inactive lithium by iodine redox. The corresponding Li||Li symmetrical cell shows an outstanding lifespan of 1400 h at 1.0 mA cm −2 with 1.0 mAh cm −2 . Meanwhile, in the 1 M LiTFSI + 0.01 M KI electrolyte, the Cu-mesh@Ag-Li||LiFePO 4 (LFP) full cell holds capacity retention of 91.7 % over 800cycles at 2.0 C, the Li||LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) full cell possesses much better capacity retention of 54 % after 500 cycles at 1.0 C. This work offers a cost-effective proposal to improve application potential with the electrolyte engineering of rechargeable Li metal batteries.
研究领域:
电化学
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材料科学
·
能量存储
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Tao Liu,Rongrong Liang,Huanjie He,Yaping Zeng,Zhuli Hou,Yanhua Liu,Jinxia Yuan,Bin Luo,Song Zhang,Chenchen Cai,Shuangfei Wang,Dengjun Lu,Shuangxi Nie
The pervasive wearable electronic devices are driving sensor innovation towards increased diversity and multifunctionality , to meet the needs of complex and varied environments. The accuracy of wearable sensors in detecting and feedback on stress is typically contingent upon the responsiveness of material structures , which can be easily perturbed by environmental humidity. In this study, one with excellent hydrophobicity and moisture resistance was developed, thereby effectively suppressing the electrostatic shielding effect caused by water ionization, while retaining the inherent ability of the material surface to generate and capture charges. In high-humidity environments (98 % RH), the self-powered sensor exhibited a full scale output retention rate of over 82.4 %, thus overcoming the limitations of sensor application in such conditions. This study provides new insight into high-performance sensing that is resistant to environmental interference, which is of great significance for the development and design of electronic skin, wearable electronic devices, and soft robotics.
研究领域:
材料科学
·
可穿戴电子
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纳米技术
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传感器与传感技术
·
软体机器人
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Mengyao Chen,Wenjing Qin,Yanli Wang,Hanlin Zhai,Changshun Gu,Xiangchuan Zhao,Ying Bi,Yixin Xu,Zeyu Ming,Shengrong Li,Shu Hu,Xingyue Zhang,Xiaoye Ma,Shougen Yin
The synergistic optimization of high strength, strong adhesion, high conductivity, and rapid self-healing in hydrogels faces fundamental challenges arising from conflicting mechanisms. Herein, a 3D-printed, ionically conductive interpenetrating double-network hydrogel based on poly (acrylic acid) (PAAc) is developed via the innovative introduction of dynamic Na⁺ bridges. This molecular design enables a unique dual mechanism: the Na⁺ ions not only form reversible ionic bonds that accelerate chain diffusion through bond rupture-recombination but also create an electrostatic shielding effect in the covalent network, which promotes chain extension to improve mechanical strength without sacrificing dynamic properties. Furthermore, Na⁺ ions regulate bound/free water states and reduces energy dissipation during topological rearrangement. These synergistic mechanisms collectively enable the hydrogel to overcome conventional performance trade-offs. The resulting material concurrently enhances mechanical properties (300 kPa tensile, 1.2 MPa compressive strength), adhesion (160 kPa), and self-healing (>90% recovery in 1 h). Biomimetic devices such as an underwater octopus-tentacle gripper, biomimetic crawling suckers, and pressure sensors are fabricated. By integrating hydrogels with 1D convolutional neural network algorithms, a real-time motion behavior recognition system is further developed. The multi-property cooperative design strategy offers a new pathway for the application of intelligent hydrogel materials in soft robotics and flexible electronics.
研究领域:
材料科学
·
软体机器人
·
柔性电子学
·
水凝胶工程
·
离子导体
·
生物医学器件
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2022
·
IF 11.211
Long-Fei Ren,Siqi Zhang,Zhongbao Ma,Yangbo Qiu,Diwen Ying,Jinping Jia,Jiahui Shao,Yiliang He
Excessive discharge of saline antibiotics wastewater into aquatic ecosystem is one crucial environmental issue facing the world today. Herein, an eco-friendly nanofiltration (NF) membrane was fabricated based on coordination complexes of tannic acid and ferric ions (TA-Fe) to selectively separate antibiotic and monovalent salt. Optimal membrane with Fe/TA molar ratio of 3/1 and coordination time of 60 s exhibited Zeta potential of −26.0 mV (pH = 7), water contact angle of 45.5 o and pore radius of 0.36 nm. Consequently, TA-Fe@M3-T60 membrane showed high ciprofloxacin/NaCl rejection ratio of ~5.9 and considerable water permeability of 20.6 ± 1.2 LMH. Besides, relatively high rejection rates were obtained for ofloxacin (94.1 ± 2.2 %) and ciprofloxacin (91.9 ± 2.5 %), while rejection rate for trimethoprim was much lower (68.2 ± 4.1 %). Effects of static/dynamic membrane adsorption of antibiotics on subsequent removal performance were investigated for the first time. Rejection rate improvements of 7.4–15.2 % were observed on pristine membrane compared with pre-adsorbed membrane in short-term NF process. Electrostatic shielding experiment and rejection rate prediction further distinguished the contributions of steric hindrance , electrostatic interaction and membrane adsorption on antibiotics removal, especially antibiotics in zwitterionic form at pH = 7. The findings of this work imply that this newly developed NF membrane has great potential for efficient treatment of antibiotics-contaminated wastewater.
研究领域:
环境科学
·
水处理
·
膜技术
·
废水管理
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 17
·5806-5814
·
IF 6.4
Liufang Chen,Zhihang Zhang,Wenjing Zhai,Guangyuan Li,Lin Huang,Xinyu Li,Wenhao Zheng,Lin. Lin,Xiaohui Zhou,Zhibo Yan,Jun-Ming Liu
Hybrid organic–inorganic perovskites have attracted wide attention due to their excellent photoelectric properties, but their stability is still one of the main obstacles to large-scale applications. Recently, the introduction of electric dipoles has become a new strategy for improving the stability and performance of perovskites. Herein, we study the stability and the photoelectric properties of CH3NH3PbI3 (MAPbI3) films fabricated with the addition of different amounts of ferroelectric poly(vinylidene fluoride–trifluoroethylene) (P(VDF–TrFE)). It is demonstrated that a suitable addition of P(VDF–TrFE) not only enhances the crystalline stability but also improves the light absorption, photoluminescence, and photocurrent responses of MAPbI3. A series of measurements were carried out to reveal that the permanent electric dipole from P(VDF–TrFE) suppresses ion migration due to the electrostatic interaction with the defects and improves the photocarrier transport because of the enhanced electrostatic screening effect, which well explains the improvement of stability and performance of MAPbI3 films.
研究领域:
材料科学
·
光伏技术
·
半导体物理
✓ 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）