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| 1 | Mass production of two-dimensional materials beyond graphene and their applications显示文摘Two-dimensional(2D)materials are promising candidates in wide applications including energy storage and conversion,sensors,flexible devices,etc.The low-cost production of 2D materials with large quantities and demanded quality is the precondition for their commercial uses.For graphene and its derivatives,relatively mature techniques have been established for their scalable preparation and industrial applications.Whereas the mass production of 2D materials beyond graphene is still in its early age and it lacks a summary on this topic.This review systematically describes the state-of-the-art approaches for high-yield preparation of 2D materials beyond graphene,including“top-down”exfoliation and“bottom-up”synthetic approaches.In particular,each method is discussed from the perspectives of its principle,optimization attempts,characteristics of the obtained 2D materials,and its scalability potential.The applications that require massively-produced 2D materials are highlighted,including electrocatalysis,batteries,supercapacitors,mechanical and chemical sensors,as well as electromagnetic interference shielding and microwave absorption devices.Finally,we propose the challenges and opportunities for scalable preparation and commercial applications of 2D materials. | Liusi Yang Wenjun Chen Qiangmin Yu Bilu Liu | 2021 | Nano Research2021，14，6： | 4 |
| 2 | 插层剂辅助等离子体液相技术用于高效制备少层二维材料显示文摘本工作提出了一种插层剂辅助的等离子体液相技术用于高效地剥离高质量少层二维材料.采用氯化锂为插层剂可快速剥离石墨纸,形成具有小D峰/G峰比(0.02)以及大碳氧比(31.5)的石墨烯产物.并且,这种方法可以拓展至高质量少层2H相二硫化钼的制备.和传统的插层剂辅助电化学方法相比,等离子体诱导产生的大量活性粒子以及快速的电子转移,使得插层剂辅助的等离子体液相技术剥离的产物缺陷少且不会引入额外的基团.这种可控的快速剥离方法在制备其他各种类型的高质量二维材料方面都具有巨大潜力. | 黄浩 高明 王佳宏 朱剑豪 黄逸凡 喻学锋 | 2020 | Science China Materials2020，63，10： | 3 |
| 3 | Chemical Vapor Deposition Growth of Two-Dimensional Compound Materials:Controllability,Material Quality,and Growth Mechanism显示文摘CONSPECTUS:Two-dimensional(2D)compound materials are regarded as promising candidates in many applications,including electronics,optoelectronics,sensors,and flexible devices,because they have high carrier mobility,tunable bandgaps,large specific surface area,atomic-level thickness,and cover lots of other properties.In order to bring 2D compound materials from the laboratory to industrial applications,materials preparation is the first prerequisite.Among all methods to prepare 2D compound materials,chemical vapor deposition(CVD)is one of the promising methods because it can grow a series of 2D compound materials with high quality as well as reasonable cost.So far,many efforts have been made in the CVD growth of 2D compound materials with large domain size,controllable number of layers,fast growth rate,and high-quality features,etc.Therefore,the CVD method has shown much potential for the commercialization of 2D compound materials.However,due to the complicated growth mechanism like sublimation and diffusion processes of multiple precursors,maintaining the controllability,repeatability,and high quality of CVD-grown 2D compound materials is still a big challenge,which prevents their widespread use.In this Account,taking 2D transition metal dichalcogenides(TMDCs)as examples,we review current progress and highlight some promising growth strategies for the CVD growth of 2D compound materials.In detail,the key technology parameters that affect the CVD process,including non-metal precursor,metal precursor,substrate engineering,temperature,and gas flow,are systematically discussed.In addition,we introduce some emerging methods in improving the quality of CVD-grown 2D compound materials(e.g.,repairing the sulfur vacancies by thiol chemistry).Then the current understanding of the CVD growth mechanism is summarized and discussed.In the end,we conclude the current challenges and propose the potential opportunities in this field in terms of the growth of novel 2D compound materials(e.g.,p-type materials,2D materials with high carrier mobility,2D materials with wide bandgaps in the ultraviolet regime or narrow bandgaps in the infrared regime,and 2D nonlayered materials),the post-treatment of CVD-grown samples to obtain new 2D materials and heterostructures,and the exploration of the exotic 2D physics and their promising applications.Overall,we believe this review will guide the future design of controllable CVD systems for the growth of 2D compound materials with good controllability and high quality,laying the foundations for their potential applications. | Lei Tang Junyang Tan Huiyu Nong Bilu Liu Hui-Ming Cheng | 2021 | Accounts of Materials Research2021，2，1： | 3 |
| 4 | Dissolution-precipitation growth of uniform and clean two dimensional transition metal dichalcogenides显示文摘Two dimensional transition metal dichalcogenides(TMDCs)have attracted much interest and shown promise in many applications.However,it is challenging to obtain uniform TMDCs with clean surfaces,because of the difficulties in controlling the way the reactants are supplied to the reaction in the current chemical vapor deposition growth process.Here,we report a new growth approach called’dissolution-precipitation’(DP)growth,where the metal sources are sealed inside glass substrates to control their feeding to the reaction.Noteworthy,the diffusion of metal source inside glass to its surface provides a uniform metal source on the glass surface,and restricts the TMDC growth to only a surface reaction while eliminating unwanted gas-phase reaction.This feature gives rise to highly uniform monolayer TMDCs with a clean surface on centimeter-scale substrates.The DP growth works well for a large variety of TMDCs and their alloys,providing a solid foundation for the controlled growth of clean TMDCs by the fine control of the metal source. | Zhengyang Cai Yongjue Lai Shilong Zhao Rongjie Zhang Junyang Tan Simin Feng Jingyun Zou Lei Tang Junhao Lin Bilu Liu Hui-Ming Cheng | 2021 | National Science Review2021，8，3： | 2 |
| 5 | 基于二维晶体的阻变实现非马尔可夫过程显示文摘在大数据时代,具有历史累积效应的非马尔可夫链算法显得尤为重要,如与记忆相关的人类脑神经、与环境相关的量子纠缠态和机器视觉追踪算法等.在传统的器件结构中,需通过大量晶体管和存储器的协同作用才能实现这类功能.基于二维材料的电阻随机存取存储器(RRAM)在下一代计算系统中已显示出巨大的应用潜力,为非马尔可夫链的简易实现提供了解决方案.本文发现二维云母片是一种良好的离子导体,其内部的钾离子可在外加电场的驱动下定向移动,使云母表现出阻变特征.进一步研究发现云母RRAM兼具单、双存储窗口,高开关比,良好的稳定性和重复性等优点.基于云母RRAM首次在单个存储器件中实现了非马尔可夫过程,其输出状态既取决于当前输入电压的极性,也取决于之前所施加电压的极性.本文利用RRAM器件中导电离子的极性在硬件系统中实现了非马尔可夫过程,对未来人工智能和大数据算法等领域的发展具有一定意义. | 张荣杰 陈文骏 滕长久 廖武刚 刘碧录 成会明 | 2021 | Science Bulletin2021，66，16： | 1 |
| 6 | High-mobility patternable MoS_(2) percolating nanofilms显示文摘Fabrication of large-area and uniform semiconducting thin films of two-dimensional(2D)materials is paramount for the full exploitation of their atomic thicknesses and smooth surfaces in integrated circuits.In addition to elaborate vapor-based synthesis techniques for the wafer-scale growth of 2D films,solution-based approaches for high-quality thin films from the liquid dispersions of 2D flakes,despite underdeveloped,are alternative cost-effective tactics.Here,we present layer-by-layer(LbL)assembly as an effective approach to obtaining scalable semiconducting films of molybdenum disulfide(MoS_(2))for field-effect transistors(FETs).LbL assembly is achieved by coordinating electrochemically exfoliated MoS_(2) with cationic poly(diallyldimethylammonium chloride)(PDDA)through electrostatic interactions.The PDDA/MoS_(2) percolating nanofilms show controlled and self-limited growth on a variety of substrates,and are easily patterned through lift-off processes.Ion gel gated FETs are fabricated on these MoS_(2) nanofilms,and they show mobilities of 9.8 cm^(2)·V^(−1)·s^(−1),on/off ratios of 2.1×10^(5) with operating voltages less than 2 V.The annealing temperature in the fabrication process can be as low as 200℃,thereby permitting the fabrication of flexible FETs on polyethylene terephthalate substrates.The LbL assembly technique holds great promise for the large-scale fabrication of flexible electronics based on solution-processed 2D semiconductors. | Xiangxiang Gao Jun Yin Gang Bian Hai-Yang Liu Chao-Peng Wang Xi-Xi Pang Jian Zhu | 2021 | Nano Research2021，14，7： | 1 |
| 7 | Synthesis of two-dimensional transition metal dichalcogenides for electronics and optoelectronics显示文摘Tremendous efforts have been devoted to preparing the ultrathin two-dimensional(2D)transition-metal dichalcogenides(TMDCs)and TMDCS-based heterojunctions owing to their unique properties and great potential applications in next generation electronics and optoelectronics over the past decade.However,to fulfill the demands for practical applications,the batch production of 2D TMDCs with high quality and large area at the mild condi-tions is still a challenge.This feature article reviews the state-of-the art research progresses that focus on the preparation and the applications in elec-tronics and optoelectronics of 2D TMDCs and their van der Waals hetero-junctions.First,the preparation methods including chemical and physical vapor deposition growth are comprehensively outlined.Then,recent progress on the application of fabricated 2D TMDCs based materials is revealed with particular attention to electronic(eg,field effect transistors and logic circuits)and optoelectronic(eg,photodetectors,photovoltaics,and light emitting diodes)devices.Finally,the challenges and future prospects are considered based on the current advance of 2D TMDCs and related heterojunctions. | Min Wu Yonghong Xiao Yang Zeng Yuanliang Zhou Xiangbin Zeng Lining Zhang Wugang Liao | 2021 | InfoMat2021，3，4： | 1 |
| 8 | 用于先进聚合物电解质水电解槽的膜电极工程显示文摘作为碳中和的重要能源载体,利用可再生能源电解水制取的“绿色氢能”受到了全世界的关注.聚合物电解质水电解槽因其优越的性能,有望成为未来绿色制氢市场的主流.当前,聚合物电解质水电解槽的发展受到膜电极发展缓慢的制约.膜电极是聚合物电解质水电解槽的重要组成部分,在很大程度上决定了水电解槽系统的成本和性能.因此,必须从降低成本和提高性能方面对膜电极组件进行优化,以促进其发展.在这篇综述中,我们首先讨论了膜电极材料的最新进展及现有的设计策略,包括催化剂的成本、活性和稳定性、离聚物的分布和厚度以及离子交换膜的离子传输效率.然后分析了所有组分和层间界面对膜电极中离子、电子和物质传输的影响,以及对电解槽性能的影响.最后,本论文就催化剂活性、离子交换膜稳定性、相邻组分之间的界面以及性能评估方法等方面提出了相关建议和展望. | 刘鹤鸣 康馨 赵泰沣 张致远 葛诗玉 胡书萁 罗雨婷 杨丰宁 李少海 孙成华 余强敏 成会明 刘碧录 | 2022 | Science China Materials2022，65，12： | 1 |
| 9 | 二维材料厚度与片径的独立筛分显示文摘二维材料是当前科学研究的前沿领域.二维材料的性质与其厚度和片径密切相关,如何获得厚度和片径均匀且可调控的二维材料,是其应用的关键.本文提出了一种三步筛分法,实现了二维材料厚度与片径的独立筛分.以二维六方氮化硼为例,三步筛分法可以将其厚度和片径独立地筛分为不同组分,所得组分均具有较窄的厚度和片径分布,且厚度全部小于6 nm.本文还进一步发展了一种力场提取法,实现了二维六方氮化硼、二硫化钼和氧化石墨烯的规模化片径筛分,是二维材料片径筛分的普适方法.本工作提出的筛分方法可制备出结构均一的二维材料,对其基础研究与应用意义深远. | 周赫元 谭隽阳 杨柳思 王婧云 丁宝福 潘意坤 于兴华 刘闵苏 杨闯 丘陵 成会明 刘碧录 | 2021 | Science China Materials2021，64，11： | 0 |
| 10 | 金基底引导制备二维黑磷及其生长机理显示文摘二维材料是近年来材料科学和凝聚态物理学的前沿研究方向.在众多的二维材料中,黑磷(black phosphorus,BP)因其独特的带隙、优异的光学和电学性质、各向异性等特性而受到研究人员的广泛关注.如何可控制备二维薄层BP是该领域的难题之一.本工作系统研究了基底对BP生长的影响,结果表明金基底对BP的生长具有重要促进作用.在此基础上,使用镀有金薄膜的硅基底为生长衬底,通过设计限域生长空间和调控温度梯度,在全新的生长体系中实现了BP纳米片的直接生长,并探讨了其生长机理.本研究所报道的结果为实现二维薄层BP的制备提供了一条新思路. | 后羿 冯思敏 赵仕龙 刘明强 刘碧录 | 2021 | 科学通报2021，66，26： | 0 |
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