ACS Nano
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2020
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IF 14.588
Xinliang Li,Mian Li,Qi Yang,Hongfei Li,Hailong Xu,Zhifang Chai,Ke Chen,Zhuoxin Liu,Zijie Tang,Longtao Ma,Zhaodong Huang,Binbin Dong,Xiaowei Yin,Qing Huang,Chunyi Zhi
Nonbattery behavior related phase transition of electrodes is usually not favorable for any batteries because it results in performance degradation at all times. Here, we demonstrate a zinc hybrid-ion battery (ZHIB) with an unusual capacity enhancement even within 18 000 cycles by employing V2CTX MXene as the cathode, enormously differing from all reported counterparts with capacity degradation initiated within hundreds of cycles. The dominated mechanisms are determined to be MXene delamination and an unexpected phase transition during cycling. Both the original cathode and secondary derivative contribute to capacity simultaneously, resulting in the unusual capacity enhancement. Consequently, the specific capacity of 508 mAh g–1 (highest for all reported aqueous zinc-ion batteries) and high energy density of 386.2 Wh kg–1 are realized. Also, the quasi-solid-state batteries fabricated can output stably at −20 °C and in bending, twisting, stabbing, and cutting conditions. Our work brings an effective approach, that is, utilizing “unstable” electrode materials, which should usually be avoided, to achieve continuously enhanced performance of a battery. The idea to use both original and secondary materials for energy storage may be developed to be a general method to achieve extraordinary cycling stability of 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
Journal of Materials Chemistry A
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2020
·Vol. 8
·期 25
·12705-12715
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IF 11.301
Xinming Wu,Han Wang,Zhilin Zhao,Bin Huang
Although potassium-ion batteries have been widely studied because of their low cost and high theoretical capacity, the origin of the poor potassium-ion storage kinetics and low structural stability still remains elusive mainly due to the large size of K+ (0.138 nm). Herein, we report an interstratification-assembly strategy via van der Waals interactions to design a novel BPE@V2CTx hybrid anode, wherein black phosphorene (BPE) and V2CTx MXene are derived from their individual 2D nanosheets. The coupled BPE@V2CTx hybrid anode with a 2D stacked interstratification structure and large specific surface area could efficiently take advantage of BPE and V2CTx nanosheets and create more active sites. This interstratification hybrid electrode not only provides an enlarged interlayer spacing and a three-dimensional interconnected conductive network to accelerate the K+ transport rates, but also has good tolerance to volume changes caused by phase transformations during the fast potassiation/depotassiation process. DFT calculations further confirm that potassium affinities and diffusion kinetics are significantly enhanced in the BPE@V2CTx hybrid anode, particularly in BPE@V2CF2. As a result, the hybrid anode possesses a remarkable synergetic effect and achieves a high reversible capacity of 593.6 mA h g−1 at 0.1 A g−1 and excellent cycling stability of 485/261 mA h g−1 with 91/86% capacity retention after 3000 cycles at 0.2/2.0 A g−1. This work opens a new way for the application of self-assembled hybrid electrodes in energy storage, electrocatalysis and sensors.
研究领域:
材料科学
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能源存储
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计算化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
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IF 16.744
Sairao Zhao,Xiao Luo,Yongfa Cheng,Zhixiang Shi,Tao Huang,Shanghua Yang,Haojian Zheng,Yun Bi,Jun Zhang,Qiuyue Shi,Minglei Cao,Chuankun Zhang,Yang Yue,Yanan Ma
Ti 3 C 2 T x MXene with unique physical and chemical properties are recently sparked tremendous interest in the energy storage field. Compared to Ti 3 C 2 T x , V 2 CT x MXene is a more promising candidate for energy storage due to a low number of atomic layers in the V 2 CT x structure and varied valence states of vanadium. Herein, we report a flexible V 2 CT x electrode with different layers (named accordion-like V 2 CT x , multi-layer V 2 CT x , and few-layer V 2 CT x, respectively) fabricated by using electrophoretic deposition, then assembled a flexible zinc ion hybrid capacitor (ZIHC) by virtue of zinc anode and gel electrolyte. The areal capacitance of few-layer V 2 CT x based ZIHC is 54.12 mF cm −2 at 0.1 mA cm −2 , which is greater than those of accordion-like V 2 CT x and multi-layer V 2 CT x based ZIHC. The outstanding electrochemical performance of few-layer V 2 CT x based ZIHC is attributed to its richer active sites and shorter ion transport routes. Additionally, the few-layer V 2 CT x based ZIHC also owns well cycling stability, with 81.48 % capacity retention after 8000 cycles, and a low self-discharge rate of 6.4 mV h −1 , making it suitable for wearable devices. So, the V 2 CT x based ZIHC is integrated with a Ti 3 C 2 T x based pressure sensor to monitor diverse human activities, demonstrating its steady and long-term power supply capacity as the energy storage device.
研究领域:
材料科学
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能源存储
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纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Han Wang,Bingzhe Jia,Zhilin Zhao,Chunyan Luo,Xinming Wu
Two-dimensional (2D) materials used in potassium ion batteries (PIBs) have high theoretical capacitance and excellent rate characteristics. However, the origin of low diffusion of potassium ions and poor storage kinetics still remain challenge mainly due to the large size of potassium ions (0.138 nm) and narrow 2D interlayer spacing. Herein, the V 2 CT x -based hybrids including 1T-MoS 2 (1T -MoS 2 @V 2 CT x ) has been successfully constructed by the magneto-hydrothermal method and proved to be an eminent anode, which can make PIBs have high reversible capacity and eminent rate performance at the same time. Moreover, the combination of 2D 1T-MoS 2 and V 2 CT x not only significantly promotes the transfer of interfacial charges as well as accelerates the transmission and diffusion of electrons and K + , but also helps to alleviate the volume changes caused by the insertion/extraction of large-sized K + during the cycle, which makes the electrode exhibit good cycle stability. Density functional theory (DFT) indicates that the synergy effect between 1T-MoS 2 and V 2 CT x has significantly strengthened the potassium affinities and ion diffusion kinetics in the 1T-MoS 2 @V 2 CT x anode by reducing the ion diffusion energy barrier, thereby showing outstanding K + storage performance, especially in 1T-MoS 2 @V 2 CF 2 . As a result, the 1T-MoS 2 @V 2 CT x anode shows a high reversible capacity of 887.3 mA h g −1 at 0.1 A g −1 , eminent rate performance of the capacity maintaining 563.6 mA h g −1 at 2.0 A g −1 and remarkable cycle stability of 601.2/374.7 mA h g −1 with 69.4/56.5% capacity retention after 2000 cycles at 1.0/2.0 A g −1 . This work provides a new way for the exquisite design of 2D composite electrodes with excellent performance in PIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2025
·
IF 1.7
Wang Yunqian,Shi Haixiang,Chen Liuyun,Su Tongming,Luo Xuan,Xie Xinling,Ji Hongbing,Qin Zuzeng
NiIn intermetallic compounds are constructed over V 2 CT x MXene for the selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL). Ni 4 In/V 2 CT x demonstrated a conversion rate of 93.6% for CAL, with a high selectivity of 77.4% for COL. The COL yield of Ni 4 In/V 2 CT x is much greater than that of Ni 4 In, Ni/V 2 CT x , and Ni 4 In/Al 2 O 3 . Moreover, the V 2 CT x support is the key to the formation of NiIn intermetallic compounds, which effectively inhibit the oxidation of metallic Ni. NiIn metal particles are uniformly distributed on the surface of V 2 CT x , increasing the metal‒support interaction. Electron-deficient metallic Ni and In inhibit the hydrogenation of the C=C bond. Furthermore, the introduction of In provides more abundant and stronger Lewis acid sites, facilitating the adsorption of C=O bonds and thereby enhancing the selectivity for COL.
研究领域:
材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
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2024
·
IF 5.2
Jiucong Liu,Mengdi Zhang,Di Zhang,Xizheng Liu
Lithium-ion batteries (LIBs) suffered from severe performance fading when operated at lower temperatures due to the increase of Li desolvation energy and the formation of Li dendrites on the anode surface. It is critically important to develop a suitable anode with higher capacity retention at lower temperatures for advanced LIBs. Herein, we report the fabrication of a composite anode by confining room-temperature liquid GaInSn alloys within a porous 2D-layered V2CTx MXene. This configuration combines the high capacity of liquid metal (LM) and high ionic conductivity of 2D V2CTx by confining self-healing LM within the V2CTx framework, resulting in enhanced long-term cycle performance (1174.6 mA h g–1 after 200 cycles at 200 mA g–1) and low-temperature performance (529.6 mA h g–1 after 100 cycles at −20 °C). Theoretical calculations disclose that the strong adsorption of V2CTx to LM ensures the stability of the composites. It also reveals that LM with a lower adsorption energy promotes the transportation of Li+. The LM nanodroplets buffer the volume change of V2CTx during charging/discharging and avoid electrode crushing. The expanded layers of V2CTx and the porous structure facilitate the Li-ion desolvation and transportation at lower temperatures, thus suppressing the performance fading. This work paves the way for the development of composite anodes for LIBs with high specific capacity toward low-temperature applications.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
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2024
·
IF 4.7
Jinru Wen,Hongyan Dan,Chunyang Li,Chunlong Dai,Zifeng Lin
The development of MXenes using Lewis acidic salts for etching (MS-MXenes) in molten salts presents a novel, fluorine-free method attracting considerable interest. However, the behavior of various MS-MXenes and their derivatives in aqueous environments remains largely unexplored. Particularly, vanadium-based MXenes demonstrate intriguing properties in Zn ion aqueous electrolytes. Herein, a fluorine-free V 2 CT x MXene@VO x is synthesized by molten salt etching under an argon atmosphere. The electrochemical properties of V 2 CT x @VO x are tested in various aqueous electrolytes, including Zn(TFSI) 2 , ZnSO 4 , ZnBr 2 , ZnAc 2 , and ZnCl 2 solutions. The V 2 CT x @VO x shows high redox capacities in all these Zn ion electrolytes, with the peak performance observed in 1 M ZnBr 2 , achieving a maximum capacity of 172 mAh g −1 at 1 mV s −1 . This performance rivals that of V 2 CT x MXene prepared through wet-chemical methods. These results underscore the potential of MS-MXenes materials in aqueous energy storage applications.
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 Nano
·
2021
·
IF 15.881
Xiaodong Zhu,Ziyi Cao,Wenjie Wang,Haijing Li,Juncai Dong,Shangpeng Gao,Dongxiao Xu,Lei Li,Jianfeng Shen,Mingxin Ye
Mn-based aqueous zinc-ion batteries (ZIBs) are promising candidate for large-scale rechargeable energy storage because of easy fabrication, low cost, and high safety. Nevertheless, the commercial application of Mn-based cathode is hindered by the challenging issues of low rate capability and poor cyclability. Herein, a manganese–vanadium hybrid, K–V2C@MnO2 cathode, featured with MnO2 nanosheets uniformly formed on a V2CTX MXene surface, is elaborately designed and synthesized by metal–cation intercalation and following in situ growth strategy. Benefiting from the hybrid structure with high conductivity, abundant active sites, and the synergistic reaction of Mn2+ electrodeposition and inhibited structural damage of MnO2, K–V2C@MnO2 shows excellent electrochemical performance for aqueous ZIBs. Specifically, it presents the high specific capacity of 408.1 mAh g–1 at 0.3 A g–1 and maintains the specific capacity of 119.2 mAh g–1 at a high current density of 10 A g–1 in a long-term cycle of up to 10000 cycles. It is superior to almost all reported Mn-based cathodes for ZIBs in the aqueous electrolyte. The superior electrochemical performance suggests that the Mn-based cathode materials designed in this work can be a rational approach to be applied for high-performance ZIBs cathodes.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Tingting Yu,Shaobin Li,Fengbo Li,Li Zhang,Yuping Wang,Jingyu Sun
Two-dimensional (2D) MXene nanomaterials display great potential for green energy storage. However, as a result of self-stacking of MXene nanosheets and the presence of conventional binders, MXene-based nanomaterials are significantly hindered in their rate capability and cycling stability. We successfully constructed a self-supported stereo-structured composite (TMA-V 2 CT x /CoV-LDH/NF) by in-situ growing 2D cobalt vanadium layered double hydroxide (CoV-LDH) vertically on 2D few-layered V 2 CT x MXene nanosheets and interconnecting it with Ni foam (NF) with a self-supported structure to act as a binder-free electrode. In addition to inhibiting CoV-LDH aggregation, the highly conductive V 2 CT x MXene and CoV-LDH work synergistically to improve charge storage. The specific capacitance of the TMA-V 2 CT x /CoV-LDH/NF electrode is 2374 F/g (1187 C/g) at 1 A/g. At the same time, the TMA-V 2 CT x /CoV-LDH/NF exhibits excellent stability, retaining 85.3 % of its specific capacitance at 20 A/g after 10,000 cycles. In addition, the hybrid supercapacitor (HSC) is assembled based on positive electrode (TMA-V 2 CT x /CoV-LDH/NF) and negative electrode (AC), achieving the maximum energy density of 74.4 Wh kg −1 at 750.3 W kg −1 . TMA-V 2 CT x /CoV-LDH/NF has potential as an electrode material for storing green energy. The research strategy provides a development prospect for the construction of novel V 2 CT x MXene-based electrode material with self-supported structures.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yu Han,Li Zhang,Shaobin Li,Fengbo Li,Jianjiao Xin,Xue Wang,Minjie Liang
Hydroquinone (HQ) and catechol (CC) are toxic isomers with similar structures that often coexist, leading to interference during detection. In this study, we employed a controllable selenization strategy to construct V 2 CT x MXene-based multiphase electrode materials (VSe 2 @V 2 O 3 @V 2 CT x MXene) for the simultaneous detection of HQ and CC. Electrochemical tests revealed VSe 2 @V 2 O 3 @V 2 CT x MXene modified electrode exhibited low electrochemical impedance, a large active surface area, and excellent electrocatalytic performance. The sensor demonstrated linear detection ranges for HQ and CC from 0.5 to 600 μM, with limits of detection 0.144 μM and 0.131 μM, respectively. Additionally, it exhibited excellent repeatability, reproducibility, selectivity, and stability. The practical applicability of the sensor was confirmed through testing in drinking water and beverages, showing satisfactory recovery rates. This work expands the application of V 2 CT x MXene in the field of electrochemical sensing and offers new insights for food safety monitoring.
研究领域:
材料科学
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环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Tingting Yu,Shaobin Li,Li Zhang,Fengbo Li,Jianxin Wang,Hong Pan,Deqing Zhang
Designing dual-functional electrode materials for supercapacitors and pollutant sensors has attracted great interest from researchers for urgent demand in green energy and the environment. In this work, a novel electrode material V 2 CT x @NiCoMn-OH was successfully constructed for dual-functional orientation via a two-step synthesis strategy, in which the NiCoMn-OH with a three-dimensional (3D) hollow structure was fabricated by employing ZIF-67 as a template and simple anion exchange and composited with the two-dimensional (2D) layered V 2 CT x MXene. The intercalation of NiCoMn-OH can effectively limit the self-accumulation of V 2 CT x MXene nanosheets and build a 3D cross-linked hollow structure, thereby broadening the ion transport channel, exposing more active sites of V 2 CT x @NiCoMn-OH, and simultaneously improving the conductivity of NiCoMn-OH. Benefiting from the unique 3D cross-linked hollow structure, the optimized V 2 CT x @NiCoMn-OH-20 electrode material exhibits an excellent specific capacitance of 827.45 C g −1 at 1 A g −1 . Furthermore, the electrode material has excellent capacitance retention of 88.44% after 10,000 cycles. Moreover, the V 2 CT x @NiCoMn-OH-20//AC ASC device displays a high energy density of 88.35 Wh kg −1 as well as high power density of 7500 W kg −1 during operation. Additionally, the V 2 CT x @NiCoMn-OH-20 exhibited excellent electrocatalytic performance in the detection of hydroquinone, including the low detection limit of 0.559 μM (S/N = 3) and the wide linear range of 2–1050 μM. Therefore, the prepared V 2 CT x @NiCoMn-OH-20 has great potential applications in the fields of supercapacitors and hydroquinone sensors.
研究领域:
材料科学
·
能源技术
·
环境科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yujing Liu,Qi Liu,Chengyao Zhao,Liping Liu,Zhongqiu Liu,Anguo Ying,Zhibin Pang,Xuping Sun,Pu Chen,Guang Chen
Owing to the adverse influences of irreversible oxidation, the development of MXene-based materials, especially those with satisfactory performance and longevity for aqueous energy storage, continues to suffer severe challenges. Herein, the strategy of targeted passivation-supported defect-lock-oxygen is conceived, whereby engineered the V 2 CT x material for controllable partial oxidation with enhanced regioselectivity. When the material works, inside the intrinsic defects, the outward diffusion of oxidation is confined by the Lewis bases around the defects, which allows for the controllable progress of oxidation. The defect-locked oxygen oxidizes the exposed carbon, thus forming sufficient amorphous carbons for enhancing the capacitive-type adsorption of K-ions. Then the oxidized defects enabled the fast kinetics via the cross-layer transport of K-ions. Benefiting from the strategy, the electrode assembly V 2 CT x -RTIL (V 2 CT x equipped with room temperature ionic liquid) exhibits high capacity, good rate capability, and ultra-longevity compared with those of the MXene materials so far reported. This work presents the first strategy of targeted passivation-supported defect-lock-oxygen for high-rate capability and super long-cycling aqueous K + storage and hopefully would provide the inspiration for the future design of novel electrodes.
研究领域:
材料科学
·
能量存储
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电化学
✓ 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）