|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Strongly Coupled 2D Transition Metal Chalcogenide-MXene-Carbonaceous Nanoribbon Heterostructures with Ultrafast Ion Transport for Boosting Sodium/Potassium Ions Storage显示文摘Combining with the advantages of two-dimensional(2D)nanomaterials,MXenes have shown great potential in next generation rechargeable batteries.Similar with other 2D materials,MXenes generally suffer severe self-agglomeration,low capacity,and unsatisfied durability,particularly for larger sodium/potassium ions,compromising their practical values.In this work,a novel ternary heterostructure self-assembled from transition metal selenides(MSe,M=Cu,Ni,and Co),MXene nanosheets and N-rich carbonaceous nanoribbons(CNRibs)with ultrafast ion transport properties is designed for sluggish sodium-ion(SIB)and potassium-ion(PIB)batteries.Benefiting from the diverse chemical characteristics,the positively charged MSe anchored onto the electronegative hydroxy(-OH)functionalized MXene surfaces through electrostatic adsorption,while the fungal-derived CNRibs bonded with the other side of MXene through amino bridging and hydrogen bonds.This unique MXene-based heterostructure prevents the restacking of 2D materials,increases the intrinsic conductivity,and most importantly,provides ultrafast interfacial ion transport pathways and extra surficial and interfacial storage sites,and thus,boosts the high-rate storage performances in SIB and PIB applications.Both the quantitatively kinetic analysis and the density functional theory(DFT)calculations revealed that the interfacial ion transport is several orders higher than that of the pristine MXenes,which delivered much enhanced Na+(536.3 mAh g^(−1)@0.1 A g^(−1))and K^(+)(305.6 mAh g^(−1)@1.0 A g^(−1))storage capabilities and excel-lent long-term cycling stability.Therefore,this work provides new insights into 2D materials engineering and low-cost,but kinetically sluggish post-Li batteries. | Junming Cao Junzhi Li Dongdong Li Zeyu Yuan Yuming Zhang Valerii Shulga Ziqi Sun Wei Han | 2021 | Nano-Micro Letters2021，13，7： | 5 |
| 2 | 二维MXenes材料的制备工艺研究现状显示文摘MXenes是一种电阻很小且导电能力很强的二维晶体材料,在电池、传感器、电磁屏蔽、医疗方面都具有很大的应用潜能。为了研发制备更多的MXenes,国内外学者开展了许多制备工艺研究和应用的探索。针对MXenes独特的层次结构、化学组成、物理性能,综述了MXenes制备工艺的研究进展,对比分析了每种制备方法的优点和需要进一步解决的问题。指出:在未来的研究中,氟化氢刻蚀法的研究重点是如何提高MXenes的电容性和插层问题;原位刻蚀法对刻蚀时间、温度、环境的要求较高,需要攻克的难点是这些因素的影响机理以及相应的改善措施;电化学腐蚀法制备的MXenes中没有—F官能团,但是研究的重点将是对沉淀物的分离和净化;熔融盐法制备MXenes正是起步阶段,需要进一步的开发和研究。 | 秦琴 杨雪 钱泽 费培恩 易清阳 孙浩 李立强 | 2022 | 无机盐工业2022，54，9： | 3 |
| 3 | Carbon-Coated Three-Dimensional MXene/Iron Selenide Ball with Core–Shell Structure for High-Performance Potassium-Ion Batteries显示文摘Two-dimensional(2D)MXenes are promising as electrode materials for energy storage,owing to their high electronic conductivity and low diffusion barrier.Unfortunately,similar to most 2D materials,MXene nanosheets easily restack during the electrode preparation,which degrades the electrochemical performance of MXene-based materials.A novel synthetic strategy is proposed for converting MXene into restacking-inhibited three-dimensional(3D)balls coated with iron selenides and carbon.This strategy involves the preparation of Fe_(2)O_(3)@carbon/MXene microspheres via a facile ultrasonic spray pyrolysis and subsequent selenization process.Such 3D structuring effectively prevents interlayer restacking,increases the surface area,and accelerates ion transport,while maintaining the attractive properties of MXene.Furthermore,combining iron selenides and carbon with 3D MXene balls offers many more sites for ion storage and enhances the structural robustness of the composite balls.The resultant 3D structured microspheres exhibit a high reversible capacity of 410 mAh g^(−1) after 200 cycles at 0.1 A g^(−1) in potassium-ion batteries,corresponding to the capacity retention of 97% as calculated based on 100 cycles.Even at a high current density of 5.0 A g^(−1),the composite exhibits a discharge capacity of 169 mAh g^(−1). | Su Hyun Yang Yun Jae Lee Heemin Kang Seung-Keun Park Yun Chan Kang | 2022 | Nano-Micro Letters2022，14，1： | 2 |
| 4 | 多孔Ti_(3)C_(2)T_(x)/SnSe复合材料的制备及其储钾性能显示文摘采用原位氧化-刻蚀法和水热合成法制备了多孔MXene复合材料(Ti_(3)C_(2)T_(x)/SnSe),并对所制备的材料进行了结构表征与电化学性能测试.结果表明:在0.05 A/g的电流密度下,多孔Ti_(3)C_(2)T_(x)/SnSe电极具有381.9 mA·h/g的储钾容量,而相同情况下SnSe电极的比容量仅为119.2 mA·h/g.在1 A/g的电流密度下,多孔Ti_(3)C_(2)T_(x)/SnSe电极的初始可逆比容量为118.5 mA·h/g,循环500次的比容量仍保持在35.4 mA·h/g.多孔Ti_(3)C_(2)T_(x)/SnSe电极材料优异的电化学性能得益于多孔Ti_(3)C_(2)T_(x)材料的高导电性,它不仅缓解了SnSe的体积膨胀,而且为离子的转移提供了良好的通路. | 赵杰 李朝林 陈刚 吉飞 慎义勇 彭娟 | 2021 | 华南师范大学学报(自然科学版)2021，53，6： | 1 |
| 5 | Hierarchical porous nitrogen,oxygen,and phosphorus ternary doped hollow biomass carbon spheres for high-speed and long-life potassium storage显示文摘Limited lithium resources have promoted the exploration of new battery technologies.Among them,potassium-ion batteries are considered as promising alternatives.At present,commercial graphite and other carbon-based materials have shown good prospects as anodes for potassium-ion batteries.However,the volume expansion and structural collapse caused by periodic K+insertion/extraction have severely restricted further development and application of potassium-ion batteries.A hollow biomass carbon ball(NOP-PB)ternarily doped with N,O,and P was synthesized and used as the negative electrode of a potassium-ion battery.X-ray photoelectron spectroscopy,Fourier‐transform infrared spectroscopy,and transmission electron microscopy confirmed that the hollow biomass carbon spheres were successfully doped with N,O,and P.Further analysis proved that N,O,and P ternary doping expands the interlayer distance of the graphite surface and introduces more defect sites.DFT calculations simultaneously proved that the K adsorption energy of the doped structure is greatly improved.The solid hollow hierarchical porous structure buffers the volume expansion of the potassium insertion process,maintains the original structure after a long cycle and promotes the transfer of potassium ions and electrons.Therefore,the NOP‐PB negative electrode shows extremely enhanced electrochemical performance,including high specific capacity,excellent long‐term stability,and good rate stability. | Mengmeng Yang Qingquan Kong Wei Feng Weitang Yao Qingyuan Wang | 2022 | Carbon Energy2022，4，1： | 1 |
| 6 | 弹性MXene上垂直生长缺陷1T′-ReSe2纳米片实现快速稳定钾离子存储显示文摘过渡金属二硫族化合物(TMDs)用作钾离子电池(KIBs)负极时存在反应动力学缓慢及结构稳定性不足等难题,导致其循环和倍率性能差,使得其应用严重受限.在本文中,我们将Te掺杂的1T′-ReSe_(2)负载在MXene上构建了高性能KIBs负极(Te-ReSe_(2)/MXene).该超结构利用缺陷化的Te-ReSe_(2)与自调节弹性MXene的协同效应,表现出高可逆容量(0.1 A g^(−1)电流密度下循环200圈后为361.1 mA h g^(−1)),优异的倍率性能(20 A g^(−1)电流密度下为179.3 mA h g^(−1))和超长的循环寿命(5 A g^(−1)电流密度下循环2000圈后为202.8 mA h g^(−1)),并能实现柔性全电池的稳定运行,是目前所有TMDs基负极展示的最好性能之一.动力学分析和理论计算表明,该材料具有出色的赝电容特性,高电导率和优异的K^(+)吸附/扩散能力,显著提升了其反应动力学. | 周健文 张业龙 刘争 邱振平 汪达 曾庆光 杨超 许冠南 杨勇 彭章泉 郭少军 | 2022 | Science China Materials2022，65，12： | 1 |
| 7 | 三维MXenes异质结及其应用显示文摘MXenes因其独特的表面化学性质、可调的金属组份、良好的亲水性和较高的载流子浓度,近年来被广泛应用于诸多研究领域.与其他二维材料类似,MXenes可与其他材料进行复合构建异质结,形成MXenes基三维多孔材料,从而显著增强其反应活性,提升其相关性能.尤其是这些三维多孔MXenes材料所具有的三维结构和明确的孔径,可显著提高电化学过程中各种离子和电子的传输速率,因此在电化学能量存储、传感、催化和环境领域应用前景广阔.在这篇综述中,作者以MXenes/碳、MXenes/无机物和MXenes/聚合物这三种主要的MXenes基异质结为研究对象,系统地总结了近年来三维多孔MXenes基异质结的构建方法的研究进展.同时,深入探讨了三维多孔MXenes基异质结在光催化、环境监测和电化学储能中的应用进展.最后,详细归纳了三维多孔MXenes基异质结的孔隙形成机制、性质和应用之间的关系,并提出了作者独到的见解.本综述可为三维多孔MXenes基异质结在高性能材料和器件中的设计、制造和应用等方面提供指导. | 江吉周 李方轶 邹菁 刘松 王佳眉 邹逸伦 项坤 张晗 朱国银 张一洲 符显珠 徐治平 | 2022 | Science China Materials2022，65，11： | 1 |
| 8 | MXenes for metal-ion and metal-sulfur batteries:Synthesis,properties,and electrochemistry显示文摘In 2011,a new class of 2D materials was discovered;after 2012,they began to be concerned;in 2017,the“gold rush”of the materials was triggered,and they are exactly MXenes.2D MXenes,a new class of transition metal carbides,carbonitrides and nitrides,have become the star and cutting-edge research materials in the field of emerging batteries systems due to their unique 2D structure,abundant surface chemistry,and excellent physical and electrochemical properties.This review focuses on the MXene materials and summarizes the recent advancements in the synthesis techniques and properties,in addition to a detailed discussion on the electrochemical energy storage applications,including alkali-ion(Li^(+),Na^(+),K^(+))storage,lithium-sulfur(Li–S)batteries,sodiumsulfur(Na–S)batteries,and metal anode protection.Special attentions are given to the elaborate design of nano-micro structures of MXenes for the various roles as electrodes,multifunctional components,S hosts,modified separators,and metal anode protective layers.The paper ends with a prospective summary of the promising research directions in terms of synthesis,structure,properties,analysis,and production on MXene materials. | Siyang Liu Zihui Song Xin Jin Runyue Mao Tianpeng Zhang Fangyuan Hu | 2022 | Materials Reports(Energy)2022，2，1： | 0 |
| 9 | MXene基负极材料在储钾领域的研究进展显示文摘钾离子电池因钾元素具有成本低,地壳丰度大,以及与金属锂相近的氧化还原电位而有望成为下一代电化学储能体系;然而,金属钾更大的半径对钾离子电池的发展提出了新的挑战。近年来,MXene作为一种二维过渡金属碳/氮化物因其独特的结构、良好的机械性能以及出色的导电性而被广泛应用于各类储能体系中。同样,MXene应用在储钾领域,有效提高了钾离子电池及电容器的性能。本综述对MXene的合成方法进行了归纳与总结,同时系统介绍了MXene以及按照嵌入、转化两种机制分类的MXene基复合材料在储钾领域的最新研究进展。 | 赵春生 | 2022 | 广东化工2022，49，12： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员