Journal of Science-Advanced Materials and Devices
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2022
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IF 7.382
Xu Ji,Man Li,Jianjun Guo,Yunying Pan,Lijun Meng,Shuang Cheng
Durability and capacity of electrode materials, especially the anodes, are the main challenges for aqueous Li-ion batteries. In this work, MoSe 2 micron flowers have been synthesized and investigated as anodes for Li + storage in LiCl aqueous-based electrolytes. In the LiCl solution, the working potential of the MoSe 2 anode can reach −1.0 V (vs Ag/AgCl). Yet, its reversible capacity is only ∼14 mAh g −1 (50 C g −1 ), owing to the absence of Faradaic reactions and the fast deformation of MoSe 2 . After gelation of the LiCl solution using poly vinyl alcohol (PVA), the activity of water is largely inhibited, and the operating potential is broadened to −1.2 V. In this gel system, the Faradaic reaction of the MoSe 2 anode is triggered, and hence its capacity is largely enhanced. With a suitable amount of PVA (LiCl/PVA-20), the MoSe 2 electrode can deliver reversible capacities of high as 157 mAh g −1 at 1 A g −1 , and 139 mAh g −1 at 2 A g −1 , and still high as 100 mAh g −1 after 50 cycles, indicating relative good stability. Using commercial LiMn 2 O 4 as cathode, a full aqueous Li-ion battery was assembled, and a high discharge voltage of ∼1.8 V can be achieved. It is found that not only the activity of water but also the morphology change of the MoSe 2 during cycling is inhibited in the gel electrolyte.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 24
·2201165
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IF 6.389
Xiaohan Xu,La Li,Weijia Liu,Zhongming Chen,Di Chen,Guozhen Shen
Thermally chargeable supercapacitors (TCSCs) are emerging and promising devices that could convert thermal energy spontaneously existing in nature into electricity and then store energy for further utilization. Herein, this work reports on the freestanding 3D Ti 3 C 2 T x MXene-based TCSC, where lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), poly(ethylene oxide) (PEO), and polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) serve as gel electrolyte. Different from the semiconductor-based thermoelectric materials, the fabricated Ti 3 C 2 T x TCSC exhibits a high Seebeck coefficient of 78.4 mV K −1 . Moreover, when applying a temperature difference (ΔT) of 5.8 K between the cold and hot sides, the Ti 3 C 2 T x TCSC devices provide a stable high voltage of 400.6 mV. The charging/discharging cycles of the Ti 3 C 2 T x TCSC devices upon periodic Δ T of 3.3 and 5.8 K demonstrate their excellent stability. To realize the practical application, the four Ti 3 C 2 T x TCSCs devices connected in series are charged by supplying a Δ T of 5.8 K and used to power a digital timer, demonstrating the possibility and application of the TCSCs in self-powered integrated electronics.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2023
·Vol. 58
·期 4
·1694-1707
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IF 4.5
Zhang Pingxiu,Li Meng,Jing Yidan,Zhang Xiaomin,Su Shengpei,Zhu Jin,Yu Ningya
Cellulose has received extensive attention as hydrogel electrolytes in energy storage fields, due to its renewable and environmentally friendly properties. However, it is still difficult to prepare cellulose-based hydrogel electrolytes for supercapacitors with high flexibility, high specific capacitance, and good temperature resistance. Herein, a series of cellulose-based hydrogel electrolytes with good mechanical properties were prepared successfully by incorporating with a small amount of acrylamide/ N , N ′-methylene bisacrylamide via a simple one-pot strategy and, successively, the resultant hydrogel electrolytes were assembled with the commercial activated carbon, as electrode materials, yielding quasi solid-state symmetric supercapacitors. It was found that the optimum hydrogel electrolytes prepared with 15 wt.% acrylamide/ N , N ′-methylene bisacrylamide possessed the tensile strength and break elongation as high as 18.7 kPa and 743.3%, respectively. The supercapacitors originating from the above electrolytes showed the excellent electrochemical performance. The specific capacitance could achieve 163.7 F g −1 at 1.0 A g −1 and the corresponding capacitance retention was 87.9% after the constant charge–discharge cycles for 8000 times. Moreover, the supercapacitors could be operated at various bending angles (0°– 180°) and low temperature (− 30 °C) without significant loss of capacitance. These results indicate that the cellulose-based hydrogel electrolytes presented here would have great potential in the application of flexible energy storage devices.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
DYES AND PIGMENTS
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2020
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IF 4.613
Yujie Zhang,Xinjiang Shi,Sixuan Xiao,Debao Xiao
Electrochromic devices (ECDs) which able to absorb the solar spectrum of visible (400–780 nm) and infrared (780–2000 nm) have attracted considerable attention due to the light control and energy-saving properties. In this paper, a electrochromic derived derivative of viologens, bis (2-(2-(2-hydroxyethoxy)ethoxy)ethyl) viologen bromide (HEV 2+ 2Br − ) was successfully synthesized and added to novel environmentally benign hydrogel electrolytes containg deionized water , sodium carboxymethyl chitosan and vitamin C (as electron mediators for the first time) as an electrochromic chromophore . The electrochromic devices on the basic of electrochromic materials (HEV 2+ 2Br − ) and hydrogel electrolytes underwent reversible switching between colorlessness and deep purple hues upon the potential ranges from 0 V to −1.2 V. Spectroelectrochemical studies demonstrated that HEV-based gel devices showed exceptional electrochromic behaviors with low driving voltage of −0.80 V, satisfactory optical contrast (unambiguously exceeded 64.13%) and high coloration efficiency (up to 243 cm 2 /C at 520 nm and 119 cm 2 /C at 865 nm) in the visible and infrared radiation. In consideration of their good electrochromic performance and environmentally friendly properties of benign hydrogel electrolytes containing HEV, the HEV-based gel devices have brilliant potentialities as candidates for related electrochromic applications for energy-efficient architecture.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
Journal of Materials Chemistry A
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2025
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IF 9.5
Jialu Bi,Fenglin Zhang,Xuesong Zhao,Ziyang Cai,Huilin Pan
The application of hydrogel electrolytes in aqueous Zn batteries presents a promising approach to addressing challenges at Zn anodes, leveraging their flexible texture and reduced water activity. However, freezing and low ionic conductivity, particularly at low temperatures, remain critical obstacles. In this work, an antifreeze hydrogel electrolyte (PVA-0.5SL) is developed by incorporating organic sulfolane (SL) into a PVA-based hydrogel, effectively reshaping the spatial distribution of chemical components and disrupting the H-bonding network. Through FTIR chemical imaging, Raman spectroscopy, and DSC analysis, we reveal that the optimal SL concentration induces the formation of SL–Zn salt aggregation, which interrupts the H-bonding network and significantly suppresses extensive ice crystallization at extremely low temperatures. The PVA-0.5SL hydrogel achieves a high ionic conductivity of 3.64 mS cm−1 at −40 °C. A Zn‖PANI full cell utilizing PVA-0.5SL demonstrates excellent rate performance and an ultra-long cycle life of 2400 cycles at low temperatures. This study offers new insights into engineering antifreeze hydrogel electrolytes by tailoring H-bonding networks through the introduction of heterogeneous phases.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Yu Lin,Sijun Wang,Jing Huang,Lu Chen,Tingting Bi,Luhe Qi,Ziyan Cai,Xuanyu Zeng,Pei Hu,Weimin Chen,Le Yu,Chaoji Chen
Aqueous zinc-ion batteries (AZIBs) based on hydrogel electrolytes are considered promising flexible power supplies owing to their intrinsic safety, competent volumetric energy density, and eco-friendliness. However, severe mechanical deterioration of the hydrogel electrolytes caused by insufficient inter-component contact, zinc (Zn) dendrites, and freezing prevents their commercialization. Herein, it is found that, by doping a trace of Fe 3+ ions to afford Fe 3+ -carboxylate supramolecular interaction, the practicality of an archetypal cellulose nanofiber-reinforced hydrogel electrolyte is significantly improved in a couple of aspects, including three and eight times increase in tensile strength and toughness without loss of ion conducting ability (up to 32 mS cm −1 ) and being room-temperature self-healable and strongly adhesive to various battery components. Together with the use of an anti-freezing mixed Zn salt, the resulting hydrogel electrolyte is able to deliver ultrahigh Zn cycling reversibility (averaging 99.4%), the great cyclability of AZIBs (a high specific capacity of 180 mAh g −1 and capacity retention of 81%), and render the batteries operable under severe abuse conditions of 180° folding, exposure to liquid nitrogen, and cutting–rehealing cycles. This work unlocks the enormous potential of Fe 3+ -carboxylate chemistry in the development of self-healable, anti-freezing, and extreme-environment-adaptable gel electrolytes for flexible energy storage devices.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
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IF 7.139
Xiaodong Wang,Shuang Wang,Chenglong Li,Yinghe Cui,Zhipeng Yong,Dan Liang,Yue Chi,Zhe Wang
Recently, hydrogel materials have been widely used in flexible energy storage devices due to their excellent electrical conductivity and nearly solid mechanical properties. But, due to the plenty of water in the traditional hydrogel electrolyte, the disadvantages of high temperature water loss and low temperature icing are inevitable. In order to solve this problem, we have fabricated an organic gel electrolyte (OGE) and assembled it with activated carbon electrode into flexible organic gel electrolyte supercapacitors (OGESCs). In terms of gel design, the MXene crosslinked polyacrylic acid-N-hydroxyethyl acrylamide (PAA-NHEA-MXene) hydrogel network is replaced by a mixture of lithium chloride and ethylene glycol solvent, showing excellent electrical conductivity (3 and 19.8 mS/cm at −20 and 25 °C, respectively) and good mechanical properties . Due to the replacement of the solvent, the operating temperature of OGESCs is extended (-20-80 °C) and meets the needs of flexible wearable devices . In addition, OGESCs exhibit cyclic stability at both low and high temperatures (capacitance decreases by 3.2% after 10,000 cycles), laying a solid foundation for its application in complex and varied environments.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
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2023
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IF 2.8
Bo Li,Mohib Ullah Khan,Cheng Qv,Lin Chen,Ying Xiong,Lixin Zhang,Mingzai Wu
Conventional flexible zinc-air batteries (ZABs) electrolytes are mainly made of hydrogels, and thus can freeze at low temperatures and cause cell failure. Here, we report a gel electrolyte consisting of agar, polyacrylamide and dimethyl sulfoxide with high ionic conductivity (24 mS cm −1 ) at −30 °C. The flexible ZABs based on this gel electrolyte showed good cycling stability (45 h) at −30 °C, which provides a new idea for the development of low-temperature resistant flexible ZABs.
研究领域:
能源材料
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电化学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
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IF 9.224
Jingliang Xu,Minghai Wang,Md. Asraful Alam,Gul Muhammad,Yongkun Lv,Chenjie Zhu,Haoran Zhang,Wenlong Xiong
When a conventional aqueous ZnSO4 solution is used as the electrolyte, rechargeable aqueous Zn/MnO2 batteries suffer from inferior electrochemical performance because of the corrosion, dendrites, and passivation on zinc anodes. Herein, a novel gel electrolyte was fabricated by adding lignin/fumed silica composites to the reference aqueous electrolyte (RAE) (2 M ZnSO4 + 0.2 M MnSO4) for the purpose of mitigating the aforementioned issues of zinc anodes. Results of linear polarization and chronoamperometry showed that the as-prepared gel electrolyte reduced deterioration on zinc (up to 38.9%) and supported planar zinc deposits. Batteries using this gel electrolyte presented a higher open-circuit voltage after 24 h of monitoring and superior rate performance compared to batteries using the RAE. Most importantly, the discharge capacity of the batteries using this gel electrolyte after 3000 cycles at 1.5 A g–1 was still up to 106.2 mA h g–1, which was much higher than that (39.6 mA h g–1) of the batteries using the RAE. Observation through X-ray diffraction and scanning electron microscopy characterizations of the post-run zinc anodes revealed that this gel electrolyte could strongly inhibit the formation of zinc dendrites and reduce the production of byproducts (3Zn(OH)2·ZnSO4·xH2O) during the operation of the battery. This study is highly significant to the development of advanced aqueous batteries with high safety.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Advanced Science
·
2021
·Vol. 8
·期 8
·2004689
·
IF 16.806
Jinyun Liu,Jiawei Long,Zihan Shen,Xing Jin,Tianli Han,Ting Si,Huigang Zhang
Self-healing and flexibility are significant for many emerging applications of secondary batteries, which have attracted broad attention. Herein, a self-healing flexible quasi-solid Zn-ion battery composing of flexible all-in-one cathode (VS 2 nanosheets growing on carbon cloth) and anode (electrochemically deposited Zn nanowires), and a self-healing hydrogel electrolyte, is presented. The free-standing all-in-one electrodes enable a high capacity and robust structure during flexible transformation of the battery, and the hydrogel electrolyte possesses a good self-healing performance. The presented battery remains as a high retention potential even after healing from being cut into six pieces. When bending at 60°, 90°, and 180°, the battery capacities remain 124, 125, and 114 mAh g −1 , respectively, cycling at a current density of 50 mA g −1 . Moreover, after cutting and healing twice, the battery still delivers a stable capacity, indicating a potential use of self-healing and wearable electronics.
研究领域:
材料科学
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能源存储技术
✓ 已验证
DOI
高影响因子
Small
·
2018
·Vol. 14
·期 14
·1704497
·
IF 9.598
Ying Guo,Kaiqiang Zheng,Pengbo Wan
The development of integrated high-performance supercapacitors with all-in-one configuration, excellent flexibility and autonomously intrinsic self-healability, and without the extra healable film layers, is still tremendously challenging. Compared to the sandwich-like laminated structures of supercapacitors with augmented interfacial contact resistance, the flexible healable integrated supercapacitor with all-in-one structure could theoretically improve their interfacial contact resistance and energy densities, simplify the tedious device assembly process, prolong the lifetime, and avoid the displacement and delamination of multilayered configurations under deformations. Herein, a flexible healable all-in-one configured supercapacitor with excellent flexibility and reliable self-healing ability by avoiding the extra healable film substrates and the postassembled sandwich-like laminated structures is developed. The healable all-in-one configured supercapacitor is prepared from in situ polymerization and deposition of nanocomposites electrode materials onto the two-sided faces of the self-healing hydrogel electrolyte separator. The self-healing hydrogel film is obtained from the physically crosslinked hydrogel with enormous hydrogen bonds, which can endow the healable capability through dynamic hydrogen bonding. The assembled all-in-one configured supercapacitor exhibits enhanced capacitive performance, good cycling stability, reliable self-healing capability, and excellent flexibility. It holds broad prospects for obtaining various flexible healable all-in-one configured supercapacitors for working as portable energy storage devices in wearable electronics.
研究领域:
材料科学
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能源存储
·
柔性电子
✓ 已验证
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jiaming Xu,Chao Ma,Chengyue Chang,Xiaofeng Lei,Yinwei Fu,Jian Wang,Xizheng Liu,Yi Ding
Hybrid solid/gel electrolytes (SGEs) have generated much research attentions because of their capability to suppress Li dendrite growth and improve battery safety. However, the interfacial compatibility of the electrode/electrolyte or polymer/inorganic ceramics within hybrid electrolytes remains challenging for practical applications. Herein, an SGE is fabricated by confining ceramic particles (Li7La3Zr2O12; LLZO) into in situ formed tetraethylene glycol dimethyl ether (G4)-based gel electrolytes within assembled cells. A hierarchical layered structure is formed when LLZO settles near the Li anode within the liquid electrolyte during the gradual gelatinization process. Good interfacial compatibility is obtained from good contact with the liquid G4 component. The LLZO layer also serves as an ionic sieve to redistribute the Li deposition. This SGE endows stable Li stripping/plating cycling over 800 h at 0.5 mA/cm2 (60 °C). Moreover, Li-metal batteries with an SGE coupled with LiFePO4 and an air cathode both exhibit superior cycling performance. This work presents a promising strategy for hierarchically layered SGEs for high-performance Li-metal batteries.
研究领域:
材料科学
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电化学
·
能源存储
✓ 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）