Lithium sulfur battery(LSB) is widely considered as a next-generation battery system due to its high theoretical energy density of 2567 Wh kg-1.However,several inherent issues obstruct the business application of LSB....Lithium sulfur battery(LSB) is widely considered as a next-generation battery system due to its high theoretical energy density of 2567 Wh kg-1.However,several inherent issues obstruct the business application of LSB.To address these issues,we assemble core-shell structure Fe_(3)O_(4)@C nanodots with 5 nm diameter as a valid sulfur host via a convenient organic pyrolysis treatment followed by calcination.The nanosized Fe3O4 particles could expose more chemisorption sites and inhibit the polysulfides shuttle.Moreover,the carbon layer could not only increase the conductivity but also ensure structural integrity during cyclic process.Furthermore,the mesoporous channels around Fe_(3)O_(4)@C could supply sufficient space to load sulfur and physically restrict the shuttle of polysulfides.Thus,the resultant S/Fe_(3)O_(4)@C cathode shows a highly initial capacity of 1089 mAh g^(-1) at 0.2 C,even retains 655 mAh g^(-1) over 200 cycles at 1 C.展开更多
To the Editor:Primary lung cancer is the most commonly diagnosed type ofmalignant tumor and is the leading cause of cancer deathworldwide.Non-small cell lung cancer(NSCLC)makes up 80%to 85%of the overall incidents of ...To the Editor:Primary lung cancer is the most commonly diagnosed type ofmalignant tumor and is the leading cause of cancer deathworldwide.Non-small cell lung cancer(NSCLC)makes up 80%to 85%of the overall incidents of primary lung cancer and is classified into two distinct histological subtypes:lung adenocarcinoma(LUAD)and lung squamous cell carcinoma(LUSC).LUAD constitutes nearly 30%to 35%of all primary lung cancer cases,and the recurrence of it seems to be increasing in most countries.[1]As a prevalent mRNA internal modification,N6-methyladenosine(m6A)methylation modification is of great significance for triggering the development of cancer and can be used as a cancer-promoting factor in many cancers.[2,3]In this study,we aim to develop an m6A RNA methylation regulators-premised prognostic signature for LUAD patients.展开更多
基金financially supported by the National Science Foundation of China(Nos.51772296,21878195,21805018 and 21805198)the Foundation for State Key Laboratory of Biochemical Engineering。
文摘Lithium sulfur battery(LSB) is widely considered as a next-generation battery system due to its high theoretical energy density of 2567 Wh kg-1.However,several inherent issues obstruct the business application of LSB.To address these issues,we assemble core-shell structure Fe_(3)O_(4)@C nanodots with 5 nm diameter as a valid sulfur host via a convenient organic pyrolysis treatment followed by calcination.The nanosized Fe3O4 particles could expose more chemisorption sites and inhibit the polysulfides shuttle.Moreover,the carbon layer could not only increase the conductivity but also ensure structural integrity during cyclic process.Furthermore,the mesoporous channels around Fe_(3)O_(4)@C could supply sufficient space to load sulfur and physically restrict the shuttle of polysulfides.Thus,the resultant S/Fe_(3)O_(4)@C cathode shows a highly initial capacity of 1089 mAh g^(-1) at 0.2 C,even retains 655 mAh g^(-1) over 200 cycles at 1 C.
基金This study was supported by grants from the National Key R&D Program of China(Nos.2017YFC1311000 and 2018YFC1312100)the CAMS Initiative for Innovative Medicine(Nos.2017-I2M-1-005,2017-I2M-2-003,and 2019-I2M-2-002)+1 种基金the Non-profit Central Research Institute Fund of Chinese Academy of Medical Sciences(Nos.2018PT32033 and 2017PT32017)the Innovation team development project of Ministry of Education(No.IRT_17R10).
文摘To the Editor:Primary lung cancer is the most commonly diagnosed type ofmalignant tumor and is the leading cause of cancer deathworldwide.Non-small cell lung cancer(NSCLC)makes up 80%to 85%of the overall incidents of primary lung cancer and is classified into two distinct histological subtypes:lung adenocarcinoma(LUAD)and lung squamous cell carcinoma(LUSC).LUAD constitutes nearly 30%to 35%of all primary lung cancer cases,and the recurrence of it seems to be increasing in most countries.[1]As a prevalent mRNA internal modification,N6-methyladenosine(m6A)methylation modification is of great significance for triggering the development of cancer and can be used as a cancer-promoting factor in many cancers.[2,3]In this study,we aim to develop an m6A RNA methylation regulators-premised prognostic signature for LUAD patients.
