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| 1 | Ultrathin hexagonal boron nitride as a van der Waals,force initiator activated graphene for engineering efficient non-metal electrocatalysts of Li-CO_(2) battery显示文摘Reasonably regulating electronic coupling to promote charge transfer and exciton separation has been regarded a promising approach in catalysis.The material engineering of van der Waals heterojunction(vdWsH)based on two-dimensional(2D)materials would be a potential way to optimize the as-prepared extrinsic physicochemical characteristics.However,it was still an almost uncultivated land waiting for exploration in catalysis.Herein,we introduced the inert h-boron nitride(h-BN)in non-metal reduced graphene oxide(GN)catalysts and constructed BN-GN vdWsH.The theoretical calculation demonstrated that the h-BN can effectively modify the electronic properties of graphene.With the introduction of h-BN,the BN-GN vdWsH can obviously enhance the catalytic activity of Li-CO_(2) battery.The existence of BN-GN vdWsH can reduce the overpotential more than 700 mV compared with reduced graphene oxide during the CO_(2) reduction reaction(CO_(2)RR)and CO_(2) evolution reaction(CO_(2)ER),and it extended cyclic stability more than three times,which was one structure design made it work as a high efficient electrocatalyst,catalytic materials. | Zemin Sun Di Wang Liu Lin Yuhui Liu Mengwei Yuan Caiyun Nan Huifeng Li Genban Sun Xiaojing Yang | 2022 | Nano Research2022，15，2： | 3 |
| 2 | Double diamond structured bicontinuous mesoporous titania templated by a block copolymer for anode material of lithium-ion battery显示文摘Titania has received considerable attention as a promising anode material of Li-ion battery(LIB).Controlling the structure and morphology of titania nanostructures is crucial to govern their performance.Herein,we report a mesoporous titania scaffold with a bicontinuous shifted double diamond(SDD)structure for anode material of LIB.The titania scaffold was synthesized by the cooperative self-assembly of a block copolymer poly(ethylene oxide)-block-polystyrene template and titanium diisopropoxide bis(acetylacetonate)as the inorganic precursor in a mixture solvent of tetrahydrofuran and HCl/water.The structure shows tetragonal symmetry(space group I4_(1)/amd)comprising two sets of diamond networks adjoining each other with the unit cell parameter of a=90 nm and c=127 nm,which affords the porous titania a specific surface area(SSA)of 42 m^(2)·g^(-1)with a mean pore diameter of 38 nm.Serving as an anode material of LIB,the bicontinuous titania scaffold exhibits a high specific capacity of 254 mAh·g^(-1)at the current density of 1 A·g^(-1)and an alluring self-improving feature upon charge/discharge over 1,000 cycles.This study overcomes the difficulty in building up ordered bicontinuous functional materials and demonstrates their potential in energy storage application. | Qingqing Sheng Qian Li Luoxing Xiang Tao Huang Yiyong Mai Lu Han | 2021 | Nano Research2021，14，4： | 2 |
| 3 | SiOx/C-Ag nanosheets derived from Zintl phase CaSi_(2) via a facile redox reaction for high performance lithium storage显示文摘As one of the high-capacity anodes in lithium-ion batteries(LIBs),silicon oxide(SiOx)has attracted wide attention due to its high theoretical capacity,low cost,and proper working voltage.However,the huge volume change and the intrinsic poor conductivity of SiOx still hinder the practical applications.How to address the issues is the focus of current research.In this work,firstly,hydrogen passivated Si nanosheets(Si6H6)were prepared from Zintl phase CaSi2,then,two-dimensional Ag nanoparticle modified SiOVC nanocomposite was prepared via a facile complex redox reaction between SieH6 and AgN03-aniline complexing agent.In this design,aniline was served as carbon sources,and Si6H6could be transformed to SiOx by AgN03 in mild solution condition.The obtained Ag modified SiOVC(SiOx/C-Ag)electrode exhibited high specific capacity(550 mAh·g^(-1)at 0.6 A·g^(-1)),superior rate,and cycling performance when served as anode for LIBs. | Jie Xie Lin Sun Yanxiu Liu Xinguo Xi Ruoyu Chen Zhong Jin | 2022 | Nano Research2022，15，1： | 2 |
| 4 | 量子点及其复合材料作为碱金属离子电池负极的研究进展显示文摘负极材料作为碱金属离子电池的重要组成部分,对电池的性能有着巨大的影响。传统的负极材料如石墨,由于比容量低很难满足未来对储能的需求。因此,寻找具有高比容量、优异的循环性能和稳定性能的负极材料至关重要。量子点因细小的尺寸和超高的比表面积被广泛用于与负极基体材料复合,由量子点修饰的复合负极材料在碱金属离子电池中表现出优异的电化学性能。然而,目前对量子点及其复合材料用于碱金属离子电池负极的研究缺乏综述和展望。本文从金属氧化物量子点、金属硫化物量子点、金属氮化物量子点、碳量子点、单质类量子点以及其他类型量子点这6个方面对应用于碱金属离子电池负极的量子点进行综述,重点分析了各类量子点修饰的复合材料的作用机理和电化学性能。综合分析表明,量子点复合负极材料能有效缩短碱金属离子的扩散路径,提供更丰富的活性位点以及具有更高的循环稳定性,有望成为碱金属离子电池最具前途的负极材料。此外,本文总结了量子点复合负极材料存在的问题,并对未来量子点及其复合材料在电池领域的发展前景作了展望:(1)优化量子点合成路径;(2)明确量子点作用机理;(3)减少副反应消耗;(4)选用更合适的基体材料。 | 周俊龙 赵鲁康 刘朝孟 高宣雯 骆文彬 | 2023 | 储能科学与技术2023，12，5： | 0 |
| 5 | Covalent interfacial coupling of vanadium nitride with nitrogen-rich carbon textile boosting its lithium storage performance as binder-free anode显示文摘Eliminating the usage of metal current collectors and binders in traditional battery electrode configuration is an effective strategy to significantly improve the capacities of lithium ion batteries (LIBs). Herein, we demonstrate the construction of porous vanadium nitride (VN) nanosheet network in situ grown on nitrogen-rich (N-rich) carbon textile (N-C@P-VN) as lightweight and binder-free anode for LIBs. The N-rich carbon textile is used both as the current collector and host to store Li^(+), thus improving the specific capacities of binder-free VN anode and meanwhile reducing the inert mass of the whole cell. Moreover, the open spaces in carbon textile and vertically aligned pores in VN nanosheet network can not only provide an expressway for Li+ and e− transport, but also afford more active sites. As a result, the binder-free N-C@P-VN anode maintains a specific capacity of 1,040 mAh·g^(−1) (or an areal capacity of 2.6 mAh·cm^(−2)) after 100 cycles at 0.1 mA·cm^(−2) in half cell. Moreover, in an assembled N-C@P-VN//LiFePO4 full cell, it exhibits an areal capacity of 1.7 mAh·cm^(−2) after 300 cycles at 0.1 C. The synergistic strategy of N-C substrate and porous VN network could be applied to guide rational design of similar N-C@nitride or sulfide hybrid systems with corresponding sulfur-doped carbon textile as the substrate. | Di Zhao Jinwen Qin Lirong Zheng Donglei Guo Jie Wang Minhua Cao | 2021 | Nano Research2021，14，11： | 0 |
| 6 | 量子点/碳复合材料在碱金属离子电池的应用进展显示文摘碱金属离子电池作为可充电电池,是目前重要的储能设备之一。它凭借能量密度大、工作电压高、无“记忆效应”、自放电小、绿色无污染等优点在近些年来受到人们的广泛关注。电极材料是影响碱金属离子电池电化学性能的重要因素之一,因此,寻求比容量高、结构稳定的电极材料是推动碱金属离子电池发展的关键。量子点/碳复合材料(QDs/C)集合量子点与碳材料的优势,是碱金属离子电池优异的候选电极材料。本文首先对量子点进行简要介绍,然后分别综述单质量子点/碳复合材料、化合物量子点/碳复合材料及异质结构量子点/碳复合材料在碱金属离子电池中的应用进展。最后,分析量子点/碳复合材料作为碱金属离子电池电极材料的优势与不足,针对目前存在的问题提出了未来发展的方向:(1)探索新型方法,解决量子点及其复合材料的团聚问题;(2)研究SEI膜的结构性能等,解决首次库仑效率偏低的问题;(3)明确反应机理,获取更优异的电化学性能。 | 吴立清 冯柳 毛晓璇 穆洪亮 刘志超 牛金叶 高蔷 | 2023 | 材料工程2023，51，1： | 0 |
| 7 | Strong near-infrared and ultrafast femtosecond nonlinearities of a covalently-linked triply-fused porphyrin dimer-SWCNT nanohybrid显示文摘Functional materials displaying large ultrafast third-order optical nonlinearities across a wide spectral region and broad temporal domain are required for all-optical signal processing.Particularly desirable is nonlinear optical(NLO)activity at near-infrared(NIR)wavelengths with femtosecond pulses.Herein the first triply-fused porphyrin dimer(TFP)-functionalized single-walled carbon nanotube(SWCNT)nanohybrid was successfully constructed by covalently grafting TFPs onto SWCNT.The results of Z-scan techniques demonstrate that the newly obtained TFP-SWCNT nanohybrid was found with a strong NLO performance under both nanosecond and femtosecond irradiation.In the nanosecond regime,an enhancement in optical limiting(OL)of the TFP-SWCNT nanohybrid is seen at 532 nm when compared with the performance of porphyrin monomer-functionalized SWCNT nanohybrid Por-SWCNT.Under femtosecond irradiation,the TFP-SWCNT nanohybrid exhibits a particularly strong OL effect with a giant two-photon absorption(TPA)cross section value(ca.15,500 GM)at 800 nm pulses that mainly stems from intense TPA of TFP,in sharp contrast to the Por-SWCNT nanohybrid which exhibits only saturable absorption under identical irradiation.These results demonstrate that the newly-developed TFP-SWCNT nanohybrid is a very promising OL candidate for practical applications across wide spectral and temporal domains,and that covalently functionalizing carbon-based materials with triply-fused chromophores may be a useful approach to engineering adaptable photonic devices with broad-ranging NLO activity. | Lulu Fu Jun Ye Hui Li Zhipeng Huang Mark GHumphrey Chi Zhang | 2022 | Nano Research2022，15，2： | 0 |
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