Advanced Science
·
2024
·
IF 14.3
Cuiqin Fang,Jing Han,Qingjun Yang,Zhenguo Gao,Di Tan,Tiandi Chen,Bingang Xu
MXene-based Zn-ion capacitors (ZICs) with adsorption-type and battery-type electrodes demonstrate high energy storage and anti-self-discharge capabilities, potentially being paired with triboelectric nanogenerators (TENGs) to construct self-powered systems. Nevertheless, inadequate interlayer spacing, deficient active sites, and compact self-restacking of MXene flakes pose hurdles for MXene-based ZICs, limiting their applications. Herein, black phosphorus (BP)-Zn-MXene hybrid is formulated for MXene-based ZIC via a two-step molecular engineering strategy of Zn-ion pre-intercalation and BP nanosheet assembly. Zn ions as intercalators induce cross-linking of MXene flakes with expandable interlayer spacing to serve as scaffolds for BP nanosheets, thereby providing sufficient accessible active sites and efficient migration routes for enhanced Zn-ion storage. The density functional theory calculations affirm that zinc adsorption and diffusion kinetics are significantly improved in the hybrid. A wearable ZIC with the hybrid delivers a competitive areal energy of 426.3 µWh cm −2 and ultra-low self-discharge rate of 7.0 mV h −1 , achieving remarkable electrochemical matching with TENGs in terms of low energy loss, matched capacity, and fast Zn-ion storage. The resultant self-powered system efficiently collects and stores energy from human motion to power microelectronics. This work advances the Zn-ion storage of MXene-based ZICs and their synergy with TENG in self-powered systems.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Jiadong Wu,Linyu Yang,Shuying Wang,Xiaolong Yao,Jun Wang,Ablat Abliz,Xuefang Xie,Hongyu Mi,Haibing Li
The structure of V 2 O 5 as a cathode material is prone to collapse during repeated embedding/de-embedding of Zn 2+ , and the instability of the material limits its application. Introducing metal ions into the V 2 O 5 layer provides larger ion channels, improves cycling kinetics, and acts as a pillar to enhance the structure stability during the charge/discharge process. In this study, Zn 0·2 V 2 O 5 ·0.51H 2 O (ZVOH) is prepared by the hydrothermal method by embedding both Zn 2+ and structural water molecules in the V 2 O 5 interlayer. ZVOH is used as the cathode in zinc-ion batteries (ZIBs) with high power and energy densities (∼6779.3 W kg −1 and 289.6 Wh kg −1 ) and outstanding cycling stability. Furthermore, the valence changes of vanadium in ZVOH during charging and discharging as well as the morphological changes on the surface of the electrode material are investigated by ex-situ methods. The binding energy of Zn 2+ at the sites within ZVOH and the migration energy barrier for Zn 2+ migration on the ZVOH surface are also investigated by density functional theory.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Kun Li,Yongxin Liang,Jingfeng Wu,Xu Guo,Guiting Wang,Zhi Zhang,Chenfeng Guo
Cost-effective manganese dioxide (MnO 2 ) promises the economical advantage of rechargeable aqueous zinc-ion batteries (ZIBs) but suffers its low electrical conductivity, the irreversibility of structural transformations during electrochemical reactions, and the slow kinetics of the reactions. This study employs a one-step co-precipitation technique to synthesize Cu 2+ intercalated δ-MnO 2 nanoflower. The intercalation of Cu 2+ not only enlarges the interlayer spacing through the interaction with water molecules, but also strengthens the interlayer structure with Cu 2+ as the pillars, improves the ionic conductivity, and enhances the rate capability of δ-MnO 2 . It is attributed to the co-insertion/extraction mechanism of Zn 2+ /H + . Therefore, the Cu 2+ intercalation δ-MnO 2 developed for ZIBs demonstrates a high specific capacity (300 mAh g −1 at 0.1 A g −1 ), long cycling stability (179 mAh g −1 until 2000 cycles at 1 A g −1 89.9 % capacity retention), and superior rate capability (195 mAh g −1 at 1 A g −1 ). Meanwhile, the flexible ZIBs assembled with this cathode material have wider commercial applicability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yixin Hou,Shiyuan Chen,Pengfei Ma,Ke Mao,Junjie Shi,Fei Long,Jun Su,Yanan Ma,Yihua Gao
Replacing Zn metal with intercalated materials as the aqueous zinc-ion batteries (AZIBs) anode is an effective strategy to solve serious zinc dendrites problem. MXene-based derived materials combine the advantages of both derivatives with excellent electrochemical activity and MXene with high electrical conductivity . Here, we report an in situ derived strategy for synthesizing H 2 Ti 3 O 7 −MXene from common Ti 3 C 2 MXene by one-step hydrothermal process with simultaneous alkalization and oxidation , followed by ion-exchange reaction. It is experimentally verified that H 2 Ti 3 O 7 −MXene exhibits an extremely low charging voltage of only 0.25 V, which has a satisfactory potential for AZIBs anodes. Through characterization analyses, H 2 Ti 3 O 7 −MXene nanoflowers consist of countless connectively interlaced and entangled nanoribbons , which shorten the ion diffusion path and accelerate Zn 2+ diffusion kinetics. The synergistic effect between H 2 Ti 3 O 7 and MXene enables H 2 Ti 3 O 7 −MXene to achieve efficient and reversible Zn 2+ (de)intercalation. Specifically, at 0.10 A g −1 , the specific capacity of 61.20 mAh g −1 is achieved and no significant discharge specific capacity decline occurs at 0.60−2.00 A g −1 . The assembled zinc ion full-cell (Zn x MnO 2 //H 2 Ti 3 O 7 −MXene) shows the excellent cyclic stability and good coulombic efficiency during 600 GCD cycles. This work proves the feasibility of MXene-based derivatives for AZIBs anode and sheds light on developing efficient intercalated MXene derived anodes.
研究领域:
材料科学
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电化学
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储能技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Binyang Luo,Hao Wang,Chao Chen,Lichun Liu,Kai Wu,Haidong Li,Danfeng Ye,Yanyan Li,Li Cui,Jinli Qiao
The Zn dendrite limits the practical application of aqueous zinc-ion batteries in the large-scale energy storage systems. To suppress the growth of Zn dendrites, a zinc ionophore of hydroxychloroquine (defined as HCQ) applied in vivo treatment is investigated as the electrolyte additive. HCQ dynamically regulates zinc ion concentration in the outer Helmholtz layer, promoting even Zn plating at the anode/electrolyte interface . This is evidenced by the scanning electron microscopy, which delivers planar Zn plating after cycling. It is further supported by the X-ray diffraction spectroscopy, which reveals the growth of Zn (0 0 2) plane. Additionally, the reduced production of H 2 during Zn plating/stripping is detected by the in-situ differential electrochemical mass spectrometry (DEMS), which shows the resistance of Zn (0 0 2) to hydrogen evolution reaction. The mechanism of dynamic regulation for zinc ion concentration is demonstrated by the in-situ optical microscopy. The hydrated zinc ion can be further plated more rapidly to the uneven location than the case in other regions, which is resulted from the dynamic regulation for zinc ion concentration. Therefore, the uniform Zn plating is formed. A cycling life of 1100 h is exhibited in the Zn||Zn symmetric cell at 1.6 mA cm −2 with the capacity of 1.6 mAh cm −2 . The Zn||Cu battery exhibits a cycling life of 200 cycles at 4 mA cm −2 with a capacity of 4 mAh cm −2 and the average Coulombic efficiency is larger than 99 %. The Zn||VO 2 battery with HCQ modified electrolyte can operate for 1500 cycles at 4 A g −1 with a capacity retention of 90 %. This strategy in the present work is wished to advance the development of zinc-ion batteries for practical application.
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
PubMed
高影响因子
Energy Material Advances
·
2023
·
IF 12.9
Zhe Gong,Zhuo Li,Pengfei Wang,Kai Jiang,Zhaowen Bai,Kai Zhu,Jun Yan,Ke Ye,Guiling Wang,Dianxue Cao,Guohua Chen
Aqueous zinc (Zn)-based energy storage devices possess promising applications for large-scale energy storage systems due to the advantage of high safety, low price, and environment-friendliness. However, their development is restricted by dendrite growth and hydrogen evolution issues from the Zn-metal anode. Herein, a facile stress-pressing method is reported for constructing a grid zinc anode (GZn) with a conductive framework. The highly conductive copper (Cu)-mesh framework reduces electrode hydrogen evolution and increases electrode conductivity. Meanwhile, the in situ-formed Cu-Zn nano-alloy stabilizes the Zn deposition interface. As a result, the GZn symmetrical cell presents a low overpotential of 49 mV after cycling for 1,200 h (0.2 mA∙cm−2). In addition, GZn displays its potential application as a universal anode for Zn-ion capacitors and batteries. An activated carbon||GZn Zn-ion capacitor delivers a stable cycling performance after 10,000 cycles at 5 A∙g−1 and MnO2||GZn Zn-ion batteries exhibit satisfactory cycle stability and excellent rate performance. This demonstrates that GZn appears to be a promising universal anode for Zn-ion capacitors and batteries.
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
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Yue Yang,Gongcan Liu,Zhou Fang,Mengjiao Liu,Yan Zhao,Xin Lai,Jian Bi,Daojiang Gao
Aqueous zinc-ion batteries (AZIBs) have drawn extensive attention for their high theoretical capacity, low redox potential, and reliable safety. Although layered vanadium oxides are prospective cathodes for AZIBs, they still suffer from fast capacity decay and poor rate capability, resulting from small interlayer spacing and severe structural collapse. Herein, a dual-guest of zinc ions and n-butylamine cointercalation strategy was proposed to solve the above two issues simultaneously. The inserted zinc ions form strong Zn–O bonds between the layers, acting as “pillars” and effectively maintaining the stability of the structure in the repeated insertion/extraction of the Zn2+ process. The preinsertion of n-butylamine preserves a suitable interlayer distance for Zn2+ diffusion, facilitating the reversible insertion/extraction of Zn2+. The density functional theory (DFT) results show that the cointercalated sample (ZBVO) has a more favorable Zn2+ diffusion path with a lower migration barrier. Benefiting from the robust channel synergistically constructed by the two guests, ZBVO displays outstanding electrochemical performances, especially for capacity and long cyclic stability: ZBVO delivers a high specific capacity of 417.1 mAh g–1 at 0.1 A g–1. Moreover, it also shows an enhanced specific capacity of 261.8 mAh g–1 at 5 A g–1 after 1000 cycles and good long cycling stability (ultrahigh capacity retention of 93% over 5000 cycles at 10 A g–1). This work provides guidance for designing high-performance vanadium-based cathodes of AZIBs.
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
高影响因子
Batteries-Basel
·
2024
·Vol. 10
·期 12
·416
·
IF 4.6
Jiazhe Cheng,Kai Wang,Xiaoyu Ning,Jichao Zhang,Hao Jia,Benjamin Tawiah,Shouxiang Jiang
Aqueous zinc-ion batteries (AZIBs) are increasingly being acknowledged as a promising candidate to safely power large-scale energy storage systems and portable devices. However, the development of effective separator materials remains a significant challenge due to issues such as harmful dendrite growth on zinc (Zn) anodes and parasitic side reactions in aqueous electrolytes. To address this challenge, we synthesize a manganese-coordinated cellulose nanofibril (Mn-CNF)-based separator for high-performance AZIBs. This separator affords enhanced ion transport channel, a large number of hydroxyl groups, and exceptional mechanical properties, with a tensile strength of 2.8 MPa and superior ionic conductivity of 5.14 mS·cm−1. These attributes collectively enhance Zn-ion transport, minimize nucleation overpotential for Zn, and accelerate the Zn deposition kinetics, thus significantly outperforming the untreated CNF separators. Consequently, the Zn||MnO2battery with the Mn-CNF separator shows a marked improvement in the galvanostatic rate performance and cycling stability by effectively accelerating and optimizing Zn-ion transport. This study offers valuable insights into the development of efficient and reliable separators for advanced electrochemical energy storage technologies.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jie Chen,Baoquan Xiao,Changfa Hu,Hangda Chen,Juanjuan Huang,De Yan,Shanglong Peng
VO2 (B) electrode material has relatively high capacity and good cycle stability. However, its poor rate performance limits its further development because of the strong interaction between zinc ions and the main lattice of VO2 (B). Herein, considering the design principle of rate performance improvement, we furnished a different scheme from a previous multistep method of the synthesis–modification strategy of pure VO2 (B). VO2@V2C 1D/2D heterostructure was constructed by controllable partial oxidation of V2C by a one-step hydrothermal method. The unique 1D/2D heterostructure improves diffusivity and reduces the diffusion size of zinc ions at the same time, which significantly improved the rate performance of VO2. The situation at the heterostructure interface is analyzed by Raman spectroscopy, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy. Combined with cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic intermittent title technology tests, the promotion mechanism for the rate performance of the derived VO2 is further explained. In addition, it is found that V2C MXene can be electrochemically activated when the voltage reaches 1.24 V. By further widening the voltage window to activate V2C, VO2@V2COx heterostructure was obtained, which realizes high capacity and maintains high rate performance in aqueous zinc-ion batteries. This work provides key insights for the design of high-rate-performance electrode materials for aqueous zinc-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Lulu Huang,Jiahao Li,Xinyu Gao,Jiali Wang,Heng Lv,Haijiao Xie,Yanyan Liu,Tiantian Gu,Gang Wang
Aqueous zinc ion batteries (AZIBs) have received widespread consideration owing to non-toxicity, proper capacity, and abundant reserves. Among numerous cathode materials , organics with adjustable structures are prospective campaigners. Naphtha [2, 3-h] naphtha [2', 3': 7, 8] quinoxalino [2, 3-a] naphtha [2', 3': 7, 8] quinoxalino [2, 3-c] phenazine-5, 10, 15, 20, 25, 30-hexaone (AQPH) with large conjugated structure is synthesized through convenient condensation reaction . As an organic cathode of AZIBs, multiple active sites endow AQPH with a decent capacity (297.7 mAh g −1 under 0.05 A g −1 ) and a brilliant cycling life (over 10,000 cycles under 10 A g −1 ). Simultaneously, large conjugated structure supplies AQPH with a rapid electron transfer rate, inducing a high Zn 2+ diffusion coefficient (3.3 × 10 −10 ∼2.6 × 10 −8 cm 2 s −1 ) and an outstanding rate ability (96.7 mAh g −1 under 20 A g −1 ). Furthermore, theoretical calculations and ex-situ characterizations prove that C O and C N are the active sites of Zn 2+ storage. This work demonstrates that expanded conjugated structure and increased active centers of organic molecules are beneficial for accomplishing sustainable high-performance AZIBs.
研究领域:
材料科学
·
电化学
·
储能技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shiwen Wang,Chuanzhen Ma,Junwei Ding,Kang Zhao,Heng Wang,Hewei Luo,Shide Wu,Shaoming Fang
VO 2 (B) has attracted tremendous attention as a cathode for aqueous zinc-ion batteries (AZIBs), but its low intrinsic electronic conductivity and uncontrolled vanadium dissolution hinder further practical applications. Herein, Zn 0.03 VO 2 , with guest zinc ions preinserted into the tunnel sites, is demonstrated to enhance the conductivity and cyclability of VO 2 (B). The tailored structure, featuring a modulated electronic configuration, offers enlarged ion diffusion tunnels, improved electronic conductivity, and enhanced electrochemical activity, thereby facilitating the reversible de-intercalation of Zn 2+ /H + ions, as confirmed by both experimental results and theoretical calculations. Notably, vanadium dissolution is significantly suppressed due to the chemical pre-insertion of guest zinc, which weakens the interaction between Zn 2+ and host lattice, as well as the homologous ion effect. As a result, Zn 0.03 VO 2 cathode delivers a high capacity of 358 mAh g −1 , particularly at low current density of 0.1 A g −1 , with 85% capacity retention after 300 cycles, excellent rate capability of 175 mAh g −1 at 5 A g −1 , and long cycling stability over 2000 cycles at 20 A g −1 . Moreover, a pseudocapacitive-dominated Zn 2+ /H + co-insertion mechanism is conclusively identified through electrochemical and spectroscopic analyses. This work provides valuable insights into ion-preinserted structural modulation of vanadium oxides for the development of high-performance AZIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
功能材料
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2024
·
IF 5.8
Qian Li,Tongde Wang,Tie Shu,Xiaoyi Pan,Yousheng Tao
Inheriting the energy storage mechanism of supercapacitors and rechargeable ion batteries, zinc ion capacitors (ZICs) greatly increase their energy density at high power without sacrificing their life span. However, sluggish kinetics and insufficient active sites for Zn2+ storage induced by the significant mismatch of charge carriers with limited pore size hinder the efficient Zn2+ storage and smooth application of carbonaceous cathode materials. Herein, a three-dimensional honeycomb-like porous carbon network (HPCN) was fabricated, which can reduce the diffusion barrier for fast kinetics, produce a high-density defect area, effectively increase active sites for charge storage, and generate a high nitrogen-doping content. Benefiting from these advantages, the optimized ZICs bring out a marvelous energy/power density (130 W h kg−1/11.7 kW kg−1) with an ultrahigh reliable cyclability of 97.8% after 50 000 cycles at a high current density of 5 A g−1. Importantly, systematic ex situ characterizations combined with theoretical calculations demonstrate that the outstanding Zn2+ storage capacity is attributed to the synergistic effect of physical co-adsorption of cations and reversible chemisorption. This work presents an attractive strategy for developing advanced carbon cathodes with suitable pores and accelerates the exploration of charge storage mechanisms, which may open a new avenue for practical supercapacitors.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）