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| 1 | A review on recent progress of non-stoichiometric SiO_(x) anodes based on lithium ion batteries显示文摘SiO_(x) anode has attracted more and more attention due to its rich reserves and high theoretical capacity.However,the disadvantages of low initial Coulombic efficiency and large volume change limit its application.Therefore in this review,the research progress of SiO_(x) anode will be summarized in detailed to demonstrate the various strategies adopted by researchers.Systematically introduction of the progress on preparation methods and modification strategies would be discussed,and the merits and challenges of various approaches will be high-lighted as well,which provides valuable insights into the rational design and development of techniques to deal with the promising practical application of SiO_(x) anode. | Gengchen Yu Jiayi Jing Chengzhe Li Qian Li Zhikai Yang Shuyu Yao Tao Li Xue Bai | 2023 | Progress in Natural Science:Materials International2023，33，1： | 0 |
| 2 | Polyaspartic Acid Needs Vigorous Market Expansion | Li Feng and Xing Zhenping,Shijiazhuang Development Zone Desai Chemical Co LtdLi Gengchen,Shijiazhuang Tiedao University | 2010 | China Chemical Reporter2010，，18： | 0 |
| 3 | Mechanical Properties of Interface between U-0.75Ti Alloy and TiC显示文摘The microhardness and modulus changes of the interface between U-0.75Ti alloy and TiC before andafter heat treatment were studied by SEM and Nano Indenter II, and the results show that the hardness and modulusof the interface are greatly increased after 820℃, 2 h water quenching and 450℃, 6 h aging. This result probablycomes from much more U2Ti and U6Ni precipitates along the interface. | Yong Zhang Junpin Lin Guoliang Chen Gengchen Sun Guanxing Li (State Key Laboratory for Advanced Metals and Materials, UST Beijing, Beijing 100083, China)(Institute of Mechanics Research, Sinica Academy of Science, Beijing, China)(202 Plane Baotou, C | 1998 | International Journal of Minerals,Metallurgy and Materials1998，12，1： | 0 |
| 4 | Clipping discrete multi-tone for peak-power-constraint IM/DD optical systems显示文摘High peak-to-average power ratio(PAPR)is a major drawback of discrete multi-tone(DMT)in peak-power-constraint(PPC)intensity-modulation/direct-detection(IM/DD)optical systems.Symmetric clipping operation is a frequently-used and practical method for mitigating the PAPR of the DMT signal.However,clipping noise is inevitably induced by the symmetric clipping operation,thereby deteriorating the system’s performance.In this paper,we study the statistical characteristics of the clipping noise in detail.Depending on the statistical characteristics,clipping-noise-cancellation(CNC)algorithms are proposed to mitigate the clipping noise in the clipping DMT systems.Theoretically,the clipping noise can be completely removed using the low-density-parity-check-assisted CNC algorithm(LDPC-assisted CNC algorithm).To verify the superiority of the clipping DMT with the CNC algorithm,we conduct an experiment with a50 Gb/s DMT system using 10G-class commercial devices for the scenario of PPC passive optical networks.The receiver sensitivity of the clipping DMT system with the CNC algorithm can reach-24 d Bm at a 20%soft-decision forward-error-correction limit,which is 2.5 d B higher than that of the DMT system without clipping operation.The clipping operation and the CNC algorithm are added after the original digital signal processing,thereby demonstrating the potential to efectively overcome the drawback in DMT signals and other high-PAPR signals. | Ji ZHOU Liangchuan LI Jiale HE Xiaofeng LU Yu BO Guanyu WANG Yuanda HUANG Gengchen LIU Yanzhao LU Shecheng GAO Yuanhua FENG Shancheng ZHAO Weiping LIU Changyuan YU Zhaohui LI | 2023 | Science China(Information Sciences)2023，66，5： | 0 |
| 5 | Wide-range color-tunable afterglow emission by the modulation of triplet exciton transition processes based on buckybowl structure显示文摘Buckybowl structures as non-uniform electrostatic potential distributions of poly-cyclic aromatic materials show a unique photoelectric performance.In this work,OTC was utilized for dynamic modulation of triplet exciton transition processes.Five host molecules with different functional units were selected,thus providing dif-ferent intermolecular interactions in the host/guest systems.Therefore,the delayed emissions were regulated from 536 to 624 nm via the tuning of the triplet exciton transition processes of OTC in different hosts.Experimental data and theoretical calculations revealed that the varied triplet transition behaviors resulted from the competition between the intersystem crossing(ISC)process of OTC-monomer and the reverse intersystem crossing(RISC)process of OTC-aggregates.This work proves the superior structure of buckybowl-based luminophore for controlling triplet exciton transition processes and supplies a new perspective for persistent afterglow luminophore design. | Yongfeng Zhang Chenchen Xiong Wenbo Wang Wenbo Dai Yue Ren Junming Xia Gengchen Li Jianbing Shi Bin Tong Xiaoyan Zheng Xiangfeng Shao Zhengxu Cai Yuping Dong | 2023 | Aggregate2023，4，4： | 0 |
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