|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Trapping precursor-level functionalities in hierarchically porous carbons prepared by a pre-stabilization route for superior supercapacitors显示文摘Versatile module design of precursor networks enables flexible functionalization of nano-carbon electrode materials to meet the adaptable energy-storage demand. Functionalized heterogeneous networks are more likely to decompose by swift temperature programming together with predesign module removal, so high functionality/network transfer from precursor to carbon is still a work in progress. A pre-stabilization route is proposed here to enhance the network strength at early pyrolysis and pin up precursor-level functionalities on the final carbon. Such strategy successfully fixes more electroactive N(4.28-8.86 wt%) into the resultant carbon microspheres compared with non-pretreated carbon(2.89wt%), as well as achieves broad ion-accessible platforms of 1575-2269 m^(2)/g with preset structural superiorities. As a result, a typical acidic device reveals an outstanding specific capacitance of 383 F/g at 10 mV/s. Taking advantage of a novel LiNO_(3)-PAM polymer electrolyte, the upgraded symmetric device displays the maximum specific capacitance of 229 F/g, along with a boosted energy density of 41.1 Wh/kg at 643.4 W/kg. This work opens up a feasible insight into realizing highly efficient precursor/electrode design toward superior system with outstanding energy/power feature and temperature applicability. | Mulati Mansuer Ling Miao Yang Qin Ziyang Song Dazhang Zhu Hui Duan Yaokang Lv Liangchun Li Mingxian Liu Lihua Gan | 2023 | Chinese Chemical Letters2023，34，3： | 1 |
| 2 | Highly active N,O-doped hierarchical porous carbons for high-energy supercapacitors显示文摘Highly active N,O-doped hierarchical porous carbons(NOCs)are fabricated through the in-situ polymerization and pyrolysis of o-tolidine and p-benzoquinone.As-prepared NOCs have a variety of faradaic-active species(N-6,N-5 and O-I),high ion-accessible platform(1799 m^2/g)and hierarchically micro-meso-macro porous architecture.Consequently,the resultant NOC electrode delivers an advantageous specific capacitance(311 F/g),with a pseudocapacitive contribution of 37%in a threeelectrode configuration,and an enhanced energy output of 18.0 Wh/kg@350 W/kg owing to the enlarged faradaic effect in an aqueous redox-active cell.Besides,a competitive energy density(74.9 Wh/kg)and high-potential durability(87.8%)are achieved in an ionic liquid(EMIMB F4)-assembled device.This study sheds light on a straightforward avenue to optimize the faradaic activity and nanoarchitecture for advanced supercapacitors. | Ziyang Zhou Hui Duan Zhiwei Wang Yaokang Lv Wei Xiong Dazhang Zhu Liangchun Li Mingxian Liu Lihua Gan | 2020 | Chinese Chemical Letters2020，31，5： | 1 |
| 3 | Biosynthesis of glycyrrhetic acid 3-O-mono-β-D-glucuronide catalyzed by β-D-glucuronidase with enhanced bond selectivity in ionic liquid/buffer biphasic system 显示文摘 | He Dongmei Kaleem Imdad Dai Dazhang Li Chun | 2010 | Process Biochemistry2010，45，12： | 1 |
| 4 | Optical control of transverse motion of ionization injected electrons in a laser plasma accelerator显示文摘We demonstrate an all-optical method for controlling the transverse motion of an ionization injected electron beam in a laser plasma accelerator by using the transversely asymmetrical plasma wakefield. The laser focus shape can control the distribution of a transversal wakefield. When the laser focus shape is changed from circular to slanted elliptical in the experiment, the electron beam profiles change from an ellipse to three typical shapes. The three-dimensional particlein-cell simulation result agrees well with the experiment, and it shows that the trajectories of these accelerated electrons change from undulating to helical. Such an all-optical method could be useful for convenient control of the transverse motion of an electron beam, which results in synchrotron radiation from orbit angular momentum. | Jie Feng Yifei Li Jinguang Wang Dazhang Li Changqing Zhu Junhao Tan Xiaotao Geng Feng Liu Liming Chen | 2021 | High Power Laser Science and Engineering2021，9，1： | 0 |
| 5 | Collimated gamma rays from laser wakefield accelerated electrons显示文摘Betatron radiation from laser wakefield accelerated electrons and X-rays scattered off a counter-propagating relativistic electron bunch arecollimated and hold the potential to extend the energy range to hard X-ray or gamma ray band. The peak brightness of these incoherent radiations could reach the level of the brightest synchrotron light sources in the world due to their femtosecond pulse duration and source sizedown to a few micrometers. In this article, the principle and properties of these radiation sources are briefly reviewed and compared. Then wepresent our recent progress in betatron radiation enhancement in the perspective of both photon energy and photon number. The enhancement istriggered by using a clustering gas target, arousing a second injection of a fiercely oscillating electron bunch with large charge or stimulating aresonantly enhanced oscillation of the ionization injected electrons. By adopting these methods, bright photon source with energy over 100 keVis generated which would greatly impact applications such as nuclear physics, diagnostic radiology, laboratory astrophysics and high-energydensity science. | Minghua Li Liming Chen Dazhang Li Kai Huang Yifei Li Yong Ma Wenchao Yan Mengze Tao Junhao Tan Zhengming Sheng Jie Zhang | 2018 | Matter and Radiation at Extremes2018，3，4： | 0 |
| 6 | Injection induced by coaxial laser interference in laser wakefield accelerators显示文摘We propose a new injection scheme that can generate electron beams with simultaneously a few permille energy spread, submillimeter milliradian emittance, and more than a 100 pC charge in laser wakefield accelerators. In this scheme, a relatively loosely focused laser pulse drivesthe plasma wakefield, and a tightly focused laser pulse with similar intensity triggers an interference ring pattern that creates onion-like multisheaths in the plasma wakefield. Owing to the change in wavefront curvature after the focal position of the tightly focused laser, the innermostsheath of the wakefield expands, which slows down the effective phase velocity of the wakefield and triggers injection of plasma electrons.Both quasicylindrical and fully three-dimensional particle-in-cell simulations confirm the generation of beams with the above mentionedproperties. | Jia Wang Ming Zeng Dazhang Li Xiaoning Wang Wei Lu Jie Gao | 2022 | Matter and Radiation at Extremes2022，7，5： | 0 |
| 7 | High-energy aqueous supercapacitors enabled by N/O codoped carbon nanosheets and“water-in-salt”electrolyte显示文摘A facile fabrication strategy is reported to obtain N/O codoped porous carbon nanosheets for pur-pose of ameliorating the charge transfer and accumulation in the concentrated LiTFSI(lithium bis(trifluoromethane sulfonyl)imide)electrolyte.By tunning the feed ratio of comonomers,the porous nanosheet structure is endowed with a significant ion-adsorption surface area(1630 m^(2)/g)and intercon-nected hierarchical porosity;meanwhile,high-level N/O dopants(N:3.58 at%,O:12.91 at%)increase the effective contact area for electrolyte ions,and further facilitate rapid ion/electron transfer.Benefiting from the advantageous features,carbon nanosheets electrode reveal an enhanced specific capacitance(375 F/g)in three-electrode configuration and the H_(2)SO_(4)-based device yields a high gravimetric energy density of 11.4 Wh/kg.Particularly,the ion-diffusion highways in porous carbon nanosheets contribute to the 2.25 V LiTFSI-based symmetric device with a high energy delivery up to 33.1 Wh/kg.This work offers an in-spiring strategy for facile fabrication of carbon nanosheets,and demonstrates their promising application in“water-in-salt”electrolyte-based supercapacitor systems. | Jingjing Yan Ling Miao Hui Duan Dazhang Zhu Yaokang Lv Liangchun Li Lihua Gan Mingxian Liu | 2022 | Chinese Chemical Letters2022，33，5： | 0 |
| 8 | Recent advances in zinc-ion hybrid energy storage: Coloring high-power capacitors with battery-level energy显示文摘Zinc-ion hybrid capacitors(ZICs) are considered as newly-emerging and competitive candidates for energy storage devices due to the integration of characteristic capacitor-level power and complementary battery-level energy. The practical application of rising ZICs still faces the specific capacity and dynamics mismatch between the two electrodes with different energy storage mechanisms, which cannot meet the ever-growing indicator demand for portable electronic displays and public traffic facilities. Focusing on these unresolved issues, this mini-review presents recent advances in ZICs referring to the hybrid energy storage mechanism, design strategies of both capacitor-type and battery-type electrode materials, and electrolyte research toward advanced performances(e.g., high operational potential, wide adaptive temperature). Finally, current challenges and future outlook have been proposed to guide further exploration of next-generation ZICs with a combination of high-power delivery, high-energy output and high-quality service durability. | Ling Miao Yaokang Lv Dazhang Zhu Liangchun Li Lihua Gan Mingxian Liu | 2023 | Chinese Chemical Letters2023，34，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员