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
·
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
·
2025
·
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
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
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
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
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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
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柔性电子
✓ 已验证
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2017
·
IF 7.504
Feng Tao,Liming Qin,Zhikui Wang,Qinmin Pan
Excellent self-healability and cold resistance are attractive properties for a portable/wearable energy-storage device. However, achieving the features is fundamentally dependent on an intrinsically self-healable electrolyte with high ionic conduction at low temperature. Here we report such a hydrogel electrolyte comprising sodium alginate cross-linked by dynamic catechol–borate ester bonding. Since its dynamically cross-linked alginate network can tolerate high-content inorganic salts, the electrolyte possesses excellent healing efficiency/cyclability but also high ionic conduction at both room temperature and low temperature. A supercapacitor with the multifunctional hydrogel electrolyte completely restores its capacitive properties even after breaking/healing for 10 cycles without external stimulus. At a low temperature of −10 °C, the capacitor is even able to maintain at least 80% of its room-temperature capacitance. Our investigations offer a strategy to assemble self-healable and cold-resistant energy storage devices by using a multifunctional hydrogel electrolyte with rationally designed polymeric networks, which has potential application in portable/wearable electronics, intelligent apparel or flexible robot, and so on.
研究领域:
材料科学
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能源存储技术
✓ 已验证
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DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 29
·2201137
·
IF 6.389
Tao Cheng,Lang Li,Ya-Li Chen,Sheng Yang,Xuan-Li Yang,Zhong-Ting Liu,Jie Qu,Chao-Fu Meng,Yi-Zhou Zhang,Wen-Yong Lai
Stretchable, self-healable, and high-capacity supercapacitors (SCs), as a state-of-the-art energy storage technology, hold enormous potential in cutting-edge wearable electronics. However, it is challenging to achieve excellent stretchability, superior self-healing ability, and high specific capacitance in the whole device simultaneously. Herein, a new class of high-capacity, stretchable, and self-healing SCs with all-in-one structures is constructed by synergistically utilizing multiple cross-linking effect and dynamic reversible non-covalent bonding of a stretchable and self-healing hydrogel electrolyte. The interlocking all-in-one structure leads to seamless contact as well as synchronous deformation and change between the electrodes and the electrolyte. Thus, by virtue of the stretchability and the self-healing ability of the electrolyte, the whole devices exhibit both excellent stretchability (elongation at break of 1060%) and superior self-healing ability (mechanically self-healing efficiency of ≈80%). Moreover, by regulating the mass loading of the electrode materials along with the good interface contact of the all-in-one structure, the SCs also show high specific capacitance (109 mF cm −2 ). Their comprehensive performances are among the best in the ever-reported all-in-one SCs. Thus, this work provides a feasible strategy for constructing high-capacity, stretchable, and self-healable SCs for smart wearable electronics.
研究领域:
材料科学
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能源存储
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柔性电子
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Juan Zeng,Hao Chen,Liubing Dong,Lu Wei,Xin Guo
Hydrogel electrolytes containing a large amount of freezable water tend to freeze at subzero temperatures , which catastrophically reduces their ionic conductivity and thus limits their practical applications. In this work, we propose a new type anti-freezing hydrogel electrolyte based on an additive of zwitterionic proline , which can maintain high ionic conductivities of hydrogel electrolytes at subzero temperatures. The unique zwitterionic structure leads to several interesting characters like strong hydration, strong ionic interactions and low self-associations, which is proved to be the keys for the high performance of hydrogel electrolytes under low temperatures. As a result, the proline hydrogel electrolytes show a high ionic conductivity of 4.2 mS cm −1 even at −40 °C. The activated carbon electrode of supercapacitors based on proline hydrogel electrolytes delivers high specific capacitances of 145.8 (at 0.5 A g −1 ) and 116.1 F g −1 (at 0.5 A g −1 ) at 25 and −30 °C, respectively. Furthermore, the specific capacitance still shows a high retention of 71% after 12,000 charge/discharge cycles at −30 °C, confirming the good low-temperature adaptability. Such anti-freezing electrolytes with high ionic conductivity will open up a new avenue for anti-freezing energy storage devices, not limited to supercapacitors.
研究领域:
材料科学
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能源存储
·
化学工程
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DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Huihui Zhang,Ruilin Wang,Yingying Hu,Renxin Wang,Jun Shen,Yiyang Mao,Qiang Wu,Baofeng Wang
Zinc metal anodes have been widely used in aqueous Zn-ion batteries. However, side reactions and zinc dendrites were generated on the Zn anode during cycling. These problems lead to short circuits and poor long-cycle stability of the battery. This paper reports a multiple cross-linked PAM-CMC-GG (PCG) gel electrolyte. Zinc uniformly deposited on (002) crystal surfaces under the combined effect of carboxylic acid and amide groups in PCG gel electrolyte. The behavior effectively reduces the generation of zinc dendrites. In addition, the abundant hydroxyl groups in PCG can inhibit the activity of free water and reduce the generation of solvent structures, thus suppressing the formation of byproducts. As a result, the symmetric cells assembled with PCG gel electrolyte operated stably for over 450 h at a current density of 5 mA cm–2, and Zn/Cu asymmetric cells maintained a coulomb efficiency (CE) of 99.2% for more than 500 cycles. It is expected that PCG gel electrolyte provides promising prospects for the practical application of gel electrolytes in energy storage devices.
研究领域:
材料科学
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电化学
·
能量存储
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DOI
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Bin Wang,Pengcheng Liu,Feifei Zhao,Bingkun Huang,Wu Zhang,Abdulhakem Y. Elezzabi,Linhua Liu,William W. Yu,Haizeng Li
Electrochromism stands out as a highly promising technology for applications including variable optical attenuators, optical switches, transparent displays, and dynamic windows. The pursuit of high-contrast tunability in electrochromic devices remains a challenging goal. Here, the first photochromic hydrogel electrolyte is reported for electro- and photo-dual responsive chromatic devices that yield a high transmittance contrast at 633 nm (ΔT = 83.1%), along with a tinted transmittance below 1.5%. Such high-contrast devices not only hold great promise for dynamic windows but also enable seamless transitions between transparent augmented reality (AR) glass and opaque virtual reality (VR) glass. These findings introduce an innovative strategy for the design of high-contrast dimmers, opening new avenues for the development of chromatic devices.
研究领域:
材料科学
·
光学工程
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DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2025
·
IF 6.2
Yukai Xu,Bin Wang,Bingkun Huang,Pengcheng Liu,Lanxin Ma,Linhua Liu,Jingwei Chen,Haizeng Li,Chengchao Wang
Emerging zinc-anode-based electrochromic devices (ZECDs) significantly contribute to displays or smart windows. However, the majority of existing ZECDs employ opaque zinc sheets and liquid electrolytes, posing key limitations of restricted light transmission capacity, possible electrolyte leakage, and poor frost resistance, while the issue of zinc dendrites is also overlooked in ZECDs. Here, a flexible and transparent zinc mesh is developed for the zinc-anode-based electrochromic device (ZECD). The effect of zinc dendrites on the cycling process of ZECDs is investigated by controlling different zinc deposition morphologies. Additionally, a hydrogel electrolyte suitable for the ZECD smart window has been developed with excellent frost resistance, water-retention capability, and electrical conductivity. Finally, the ZECD smart window is assembled based on the transparent zinc mesh and the hydrogel electrolyte. The window has excellent cyclic stability (94.4% retention after 1000 cycles), high optical contrast (78.7% at 633 nm), and high energy-recovery efficiency (61.6%). It is foreseeable that these results will provide a boost to the future development of ZECDs and energy efficiency in buildings.
研究领域:
材料科学
·
能源技术
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显示技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）