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| 1 | Bonding VSe2 ultrafine nanocrystals on graphene toward advanced lithium-sulfur batterie显示文摘Lithium–sulfur batteries have been attracting considerable research attention due to their high energy densities and low costs. However, one of their main challenges is the undesired shuttling of polysulfides, causing rapid capacity degradation. Herein, we report the first example of sulfiphilic VSe2 ultrafine nanocrystals immobilized on nitrogen-doped graphene to modify the battery separator for alleviating the shuttling problem. VSe2 nanocrystals provide numerous active sites for chemisorption of polysulfides as well as benefit the nucleation and growth of Li2S. Furthermore, the kinetic reactions are accelerated which is confirmed by higher exchange current density and higher lithium ion diffusion coefficient. And the first-principles calculations further show that the exposed sulfiphilic planes of VSe2 boost the redox of Li2S. When used as separators within the lithium sulfur batteries, the cell indicates greatly enhanced electrochemical performances with excellent long cycling stability and exceptional rate capability up to 8 C. Moreover, it delivers a higher areal capacity of 4.04 mAh·cm^−2 as well as superior cycling stability with sulfur areal loading up to 6.1 mg·cm^−2. The present strategy can encourage us in engineering novel multifunctional separators for energy-storage devices. | Wenzhi Tian Baojuan Xi Yu Gu Qiang Fu Zhenyu Feng Jinkui Feng Shenglin Xiong | 2020 | Nano Research2020，13，10： | 6 |
| 2 | Metal-organic frameworks enable broad strategies for lithium-sulfur batteries显示文摘The lithium-sulfur(Li-S) battery is considered to be a potential next-generation power battery system,however, it is urgent that suitable materials are found in order to solve a series of challenges, such as the shuttle effect and lithium dendrite growth. As a multifunctional porous material, metal-organic frameworks(MOFs) can be used in different parts of Li-S batteries. In recent years, the application of MOFs in Li-S batteries has been developed rapidly. This review summarizes the milestone works and recent advances of MOFs in various aspects of Li-S batteries, including cathode, separator and electrolyte. The factors affecting the performance of MOFs and the working mechanisms of MOFs in these different parts are also discussed in detail. Finally, the opportunities and challenges for the application of MOFs in Li-S batteries are proposed. We also put forward feasible solutions to related problems. This review will provide better guidance for the rational design of novel MOF-based materials for Li-S batteries. | Cheng Zhou Zhaohuai Li Xu Xu Liqiang Mai | 2021 | National Science Review2021，8，12： | 2 |
| 3 | 肝细胞癌患者Eag1表达与临床病理特征的相关性显示文摘目的探讨肝细胞癌(HCC)患者中Eag1表达与临床病理特征、外周血中性粒细胞与淋巴细胞比值(NLR)、血小板与淋巴细胞比值(PLR)的相关性。方法采用免疫组织化学(IHC)法检测186例HCC组织芯片中Eag1的表达。分析Eag1的表达与患者临床病理特征、NLR、PLR及预后的相关性。结果IHC结果显示,Eag1在HCC组织中的阳性表达率为82.3%(153/186),高于其在癌旁组织中的阳性表达率56.5%(105/186),差异有统计学意义(P<0.01)。HCC中Eag1阳性表达与乙型肝炎表面抗原(HBsAg)、血清甲胎蛋白(AFP)、肝硬化、肿瘤分级、脉管内癌栓、术后复发因素相关(P<0.05或P<0.01)。治疗前外周血NLR、PLR与HBsAg、AFP、肝硬化、肿瘤分级、脉管内癌栓、术后复发因素相关(P<0.05或P<0.01)。HCC组织中Eag1阳性表达与NLR、PLR呈显著正相关(P=0.001)。结论在HCC恶性进展中,Eag1高表达可能是关键的分子事件之一。Eag1作为肿瘤特异性分子标志物,其表达能反映肿瘤的恶性状态,有助于评估HCC患者的预后。HCC中Eag1高表达可影响外周血中NLR、PLR,提示其参与乙型肝炎病毒感染导致的肝炎、肝硬化、肝癌的发生过程。Eag1或是HCC靶向治疗的有效靶点。 | 陈丽燕 顾春燕 陈莉 | 2022 | 实用临床医药杂志2022，26，8： | 0 |
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