The sulfide-based solid-state electrolytes(SEs)reactivity toward moisture and Li-metal are huge barriers that impede their large-scale manufactu ring and applications in all-solid-state lithium batteries(ASSLBs).Herei...The sulfide-based solid-state electrolytes(SEs)reactivity toward moisture and Li-metal are huge barriers that impede their large-scale manufactu ring and applications in all-solid-state lithium batteries(ASSLBs).Herein,we proposed an Al and O dual-doped strategy for Li_(3)PS_(4)SE to regulate the chemical/electrochemical stability of anionic PS_(4)^(3-)tetrahedra to mitigate structural hydrolysis and parasitic reactions at the SE/Li interface.The optimized Li_(3.08)A_(10.04)P_(0.96)S_(3.92)O_(0.08)SE presents the highestσLi+of 3.27 mS cm^(-1),which is~6.8 times higher than the pristine Li_(3)PS_(4)and excellently inhibits the structural hydrolysis for~25 min@25%humidity at RT.DFT calculations confirmed that the enhanced chemical stability was revealed to the intrinsically stable entities,e.g.,POS33-units.Moreover,Li_(3.08)Al_(0.04)P_(0.96)S_(3.92)O_(0.08)SE cycled stably in Li//Li symmetric cell over 1000 h@0.1 mA cm^(-2)/0.1 mA h cm^(-2),could be revealed to Li-Al alloy and Li_(2)Oat SE/Li interface impeding the growth of Li-dendrites during cycling.Resultantly,LNO@LCO/Li_(3.08)Al_(0.04)P_(0.96)S_(3.92)O_(0.08)/Li-In cell delivered initial discharge capacities of 129.8 mA h g^(-1)and 83.74%capacity retention over 300 cycles@0.2 C at RT.Moreover,the Li_(3.08)Al_(0.04)P_(0.96)S_(3.92)O_(0.08)SE presented>90%capacity retention over 200 and 300 cycles when the cell was tested with LiNi_(0.8)Co_(0.15)Al_(0.05)O_(2)(NCA)cathode material vs.5 and 10 mg cm^(-2)@RT.展开更多
The Wigner-Seitz unit cell (rhombus) for a honeycomb lattice fails to establish a k-vector in the 2D space, which is required for the Bloch electron dynamics. Phonon motion cannot be discussed in the triangular coordi...The Wigner-Seitz unit cell (rhombus) for a honeycomb lattice fails to establish a k-vector in the 2D space, which is required for the Bloch electron dynamics. Phonon motion cannot be discussed in the triangular coordinates, either. In this paper, we propose a rectangular 4-atom unit cell model, which allows us to discuss the electron and phonon (wave packets) motion in the k-space. The present paper discusses the band structure of graphene based on the rectangular 4-atom unit cell model to establish an appropriate k-vector for the Bloch electron dynamics. To obtain the band energy of a Bloch electron in graphene, we extend the tight-binding calculations for the Wigner-Seitz (2-atom unit cell) model of Reich et al. (Physical Review B, 66, Article ID: 035412 (2002)) to the rectangular 4-atom unit cell model. It is shown that the graphene band structure based on the rectangular 4-atom unit cell model reveals the same band structure of the graphene based on the Wigner-Seitz 2-atom unit cell model;the π-band energy holds a linear dispersion (ε−k ) relations near the Fermi energy (crossing points of the valence and the conduction bands) in the first Brillouin zone of the rectangular reciprocal lattice. We then confirm the suitability of the proposed rectangular (orthogonal) unit cell model for graphene in order to establish a 2D k-vector responsible for the Bloch electron (wave packet) dynamics in graphene.展开更多
1.楼下那个人睡不着觉。[误]The downstairs man couldn’t go to sleep.[正]The man downstairs couldn’t go to sleep.[析]以today,here,there,downstairs,upstairs, below,above等作定语修饰名词时常放在名词之后。2我正想出去,铃...1.楼下那个人睡不着觉。[误]The downstairs man couldn’t go to sleep.[正]The man downstairs couldn’t go to sleep.[析]以today,here,there,downstairs,upstairs, below,above等作定语修饰名词时常放在名词之后。2我正想出去,铃响了。[误]I just went out when the bell rang.[正]I was just going out when the bell rang.[析]由when连接的两个分句,其中—个谓语动词是延续性,另一个谓语是终止性动词时,此处的when是并列连词,意为“这时 (突然)”,所以要将went out改为was going out.展开更多
I.单项选择:从A、B、C、D四个选项中,选出可以填入空白处的正确答案。1.Are you__ the 100-metre race today? A.on B.to C.for D.in2.I’m afraid you didn’t do your homework__ A.careful enough B.carefully enough C.enough caref...I.单项选择:从A、B、C、D四个选项中,选出可以填入空白处的正确答案。1.Are you__ the 100-metre race today? A.on B.to C.for D.in2.I’m afraid you didn’t do your homework__ A.careful enough B.carefully enough C.enough careful D.enough carefully3.They__a class meeting last Friday. A.hold B.held C.take D.took4.__Jack came a moment__ . -Why did he come__? A.late;later B.late;late C.later;late D.later;展开更多
1.你必须尽快把书还到图书馆。[误]You must return the book to the library as quickly as possible.[正]You must return the book to the library as soon as possible.[析]as quickly as possible与as soon as possible都可表“尽...1.你必须尽快把书还到图书馆。[误]You must return the book to the library as quickly as possible.[正]You must return the book to the library as soon as possible.[析]as quickly as possible与as soon as possible都可表“尽快”地,但前者是指做事的速度快,可以用as fast as possible来替换;而后者则指做事的时间尽可能早。展开更多
1.你明天能来吗?【误】Do you able to come tomorrow?【正】Are you able to come tomorrow?【析】able是个形容词,常放在be之后,构成beable to do sth.,表示“能做某事”;其疑问形式不需要用助动词do,而应将be提到主语之前。
Ⅰ.词汇。A)根据句意和首字母或汉语提示,拼写单词。1.If I have a good pen,I’ll be a ——towrite flaster.2.He is an i——.He has invented manythings.Ⅰ3.Christmas Day is the b——of Jesus Christ.
1、单项选择1. They worked day and night but got nothing. Such the blackslaves.A. is B. are C. was D. were2. By the time I leave the city, I here for three months.A. had been B. will hav...1、单项选择1. They worked day and night but got nothing. Such the blackslaves.A. is B. are C. was D. were2. By the time I leave the city, I here for three months.A. had been B. will have been C. would be D. was3.-It be Li Ming who has taken my dictionary away.-No, it be him. He has his own.A.mustn't;must B.can't; must C.mustn't;mustn't D.must;展开更多
基金supported by the National Natural Science Foundation of China(Nos.21203008,21975025,12274025)the Hainan Province Science and Technology Special Fund(Nos.ZDYF2021SHFZ232,ZDYF2023GXJS022)the Hainan Province Postdoctoral Science Foundation(No.300333)。
文摘The sulfide-based solid-state electrolytes(SEs)reactivity toward moisture and Li-metal are huge barriers that impede their large-scale manufactu ring and applications in all-solid-state lithium batteries(ASSLBs).Herein,we proposed an Al and O dual-doped strategy for Li_(3)PS_(4)SE to regulate the chemical/electrochemical stability of anionic PS_(4)^(3-)tetrahedra to mitigate structural hydrolysis and parasitic reactions at the SE/Li interface.The optimized Li_(3.08)A_(10.04)P_(0.96)S_(3.92)O_(0.08)SE presents the highestσLi+of 3.27 mS cm^(-1),which is~6.8 times higher than the pristine Li_(3)PS_(4)and excellently inhibits the structural hydrolysis for~25 min@25%humidity at RT.DFT calculations confirmed that the enhanced chemical stability was revealed to the intrinsically stable entities,e.g.,POS33-units.Moreover,Li_(3.08)Al_(0.04)P_(0.96)S_(3.92)O_(0.08)SE cycled stably in Li//Li symmetric cell over 1000 h@0.1 mA cm^(-2)/0.1 mA h cm^(-2),could be revealed to Li-Al alloy and Li_(2)Oat SE/Li interface impeding the growth of Li-dendrites during cycling.Resultantly,LNO@LCO/Li_(3.08)Al_(0.04)P_(0.96)S_(3.92)O_(0.08)/Li-In cell delivered initial discharge capacities of 129.8 mA h g^(-1)and 83.74%capacity retention over 300 cycles@0.2 C at RT.Moreover,the Li_(3.08)Al_(0.04)P_(0.96)S_(3.92)O_(0.08)SE presented>90%capacity retention over 200 and 300 cycles when the cell was tested with LiNi_(0.8)Co_(0.15)Al_(0.05)O_(2)(NCA)cathode material vs.5 and 10 mg cm^(-2)@RT.
文摘The Wigner-Seitz unit cell (rhombus) for a honeycomb lattice fails to establish a k-vector in the 2D space, which is required for the Bloch electron dynamics. Phonon motion cannot be discussed in the triangular coordinates, either. In this paper, we propose a rectangular 4-atom unit cell model, which allows us to discuss the electron and phonon (wave packets) motion in the k-space. The present paper discusses the band structure of graphene based on the rectangular 4-atom unit cell model to establish an appropriate k-vector for the Bloch electron dynamics. To obtain the band energy of a Bloch electron in graphene, we extend the tight-binding calculations for the Wigner-Seitz (2-atom unit cell) model of Reich et al. (Physical Review B, 66, Article ID: 035412 (2002)) to the rectangular 4-atom unit cell model. It is shown that the graphene band structure based on the rectangular 4-atom unit cell model reveals the same band structure of the graphene based on the Wigner-Seitz 2-atom unit cell model;the π-band energy holds a linear dispersion (ε−k ) relations near the Fermi energy (crossing points of the valence and the conduction bands) in the first Brillouin zone of the rectangular reciprocal lattice. We then confirm the suitability of the proposed rectangular (orthogonal) unit cell model for graphene in order to establish a 2D k-vector responsible for the Bloch electron (wave packet) dynamics in graphene.
文摘1.楼下那个人睡不着觉。[误]The downstairs man couldn’t go to sleep.[正]The man downstairs couldn’t go to sleep.[析]以today,here,there,downstairs,upstairs, below,above等作定语修饰名词时常放在名词之后。2我正想出去,铃响了。[误]I just went out when the bell rang.[正]I was just going out when the bell rang.[析]由when连接的两个分句,其中—个谓语动词是延续性,另一个谓语是终止性动词时,此处的when是并列连词,意为“这时 (突然)”,所以要将went out改为was going out.
文摘I.单项选择:从A、B、C、D四个选项中,选出可以填入空白处的正确答案。1.Are you__ the 100-metre race today? A.on B.to C.for D.in2.I’m afraid you didn’t do your homework__ A.careful enough B.carefully enough C.enough careful D.enough carefully3.They__a class meeting last Friday. A.hold B.held C.take D.took4.__Jack came a moment__ . -Why did he come__? A.late;later B.late;late C.later;late D.later;
文摘1.你必须尽快把书还到图书馆。[误]You must return the book to the library as quickly as possible.[正]You must return the book to the library as soon as possible.[析]as quickly as possible与as soon as possible都可表“尽快”地,但前者是指做事的速度快,可以用as fast as possible来替换;而后者则指做事的时间尽可能早。
文摘1.你明天能来吗?【误】Do you able to come tomorrow?【正】Are you able to come tomorrow?【析】able是个形容词,常放在be之后,构成beable to do sth.,表示“能做某事”;其疑问形式不需要用助动词do,而应将be提到主语之前。
文摘Ⅰ.词汇。A)根据句意和首字母或汉语提示,拼写单词。1.If I have a good pen,I’ll be a ——towrite flaster.2.He is an i——.He has invented manythings.Ⅰ3.Christmas Day is the b——of Jesus Christ.
文摘1、单项选择1. They worked day and night but got nothing. Such the blackslaves.A. is B. are C. was D. were2. By the time I leave the city, I here for three months.A. had been B. will have been C. would be D. was3.-It be Li Ming who has taken my dictionary away.-No, it be him. He has his own.A.mustn't;must B.can't; must C.mustn't;mustn't D.must;
