| ²é¿´: 1530 | »Ø¸´: 3 | ||||||||
ParkerÒ»°àľ³æ (ÕýʽдÊÖ)
ˮţÉú̬ѧ¼Ò
|
[½»Á÷]
´óÅ£Gerbrand Ceder×îÐÂ﮵çÁ¦×÷£¨2015Äê9ÔÂ18ÈÕ£© ÒÑÓÐ3È˲ÎÓë
|
|
ÌâÄ¿£ºLi-ion conductivity in Li9S3N ×÷ÕߣºLincoln J. Miara,*a Naoki Suzuki,b William D. Richards,c Yan Wang,c Jae Chul Kim,c and Gerbrand Ceder,cd a Samsung Advanced Institute of Technology ¨C USA, 255 Main St., Suite 702, Cambridge, MA 02142, USA. E-mail: lincoln.m@samsung.com b Samsung R&D Institute Japan, Mino Semba Center Bldg. 13F, 2-1-11, Semba Nish, Minoh, Osaka 562-0036, Japan c Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA d Department of Materials Science & Engineering, UC Berkeley, 210 Hearst Mining Building, Berkeley, CA 94720-1760, USA ÕªÒª£ºLi9S3N (LSN) is investigated as a new lithium ion conductor and barrier coating between an electrolyte and Li metal anode in all solid state lithium ion batteries. LSN is an intriguing material since it has a 3-dimensional conduction channel, high lithium content, and is expected to be stable against lithium metal. The conductivity of LSN is measured with impedance spectroscopy as 8.3 ¡Á 10−7 S cm−1 at room temperature with an activation energy of 0.52 eV. Cyclic voltammetry (CV) scans showed reversible Li plating and striping. First principles calculations of stability, nudged elastic band (NEB) calculations, and ab initio molecular dynamics (AIMD) simulations support these experimental results. Substitution as a means to enhance conductivity is also investigated. First-principles calculations predict that divalent cation substituents displace a lithium from a tetrahedral site along the migration pathway, and reduce the migration energy for the lithium ions in the vicinity of the substituent. A percolating path with low migration energies (¡«0.3 eV) can be formed throughout the crystal structure at a concentration of Li8.5M0.25S3N (M = Ca2+, Zn2+, or Mg2+), resulting in predicted conductivities as high as ¦Ò300 K = 2.3 mS cm−1 at this concentration. However, the enhanced conductivity comes at the expense of relatively large substitution energy. Halide substitution, such as Cl on a S site (Image ID:c5ta05432j-t2.gif in Kröger¨CVink notation), has a relatively low energy cost, but only provides a modest improvement in conductivity. ceder.jpg |
» ±¾Ìû¸½¼þ×ÊÔ´Áбí
-
»¶Ó¼à¶½ºÍ·´À¡£ºÐ¡Ä¾³æ½öÌṩ½»Á÷ƽ̨£¬²»¶Ô¸ÃÄÚÈݸºÔð¡£
±¾ÄÚÈÝÓÉÓû§×ÔÖ÷·¢²¼£¬Èç¹ûÆäÄÚÈÝÉæ¼°µ½ÖªÊ¶²úȨÎÊÌ⣬ÆäÔðÈÎÔÚÓÚÓû§±¾ÈË£¬Èç¶Ô°æÈ¨ÓÐÒìÒ飬ÇëÁªÏµÓÊÏ䣺xiaomuchong@tal.com - ¸½¼þ 1 : Ceder_RSC_2015.pdf
2015-09-18 07:01:48, 1.88 M
» ÊÕ¼±¾ÌûµÄÌÔÌûר¼ÍƼö
﮵ç×ÊÔ´¹²Ïí | ÄÉÃ×¼¼ÊõÓëÄÜÔ´¼°Ä£Äâ | ....ï®µç³Ø©ª_____ | ¿ÆÑÐÓëÓýÈË |
×Ô¼ºµÄÊÕ²Ø |
» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©
» ²ÂÄãϲ»¶
µç×ӿƼ¼´óѧ²ÄÁÏѧԺÍõÁˆ½ÌÊÚÄâÕÐÊÕ¹¤³Ì²©Ê¿Ò»Ãû£¨»¯Ñ§¡¢²ÄÁÏ·½Ïò£©
ÒѾÓÐ4È˻ظ´
ºþÄÏũҵ´óѧÄÜÔ´²ÄÁÏ´´ÐÂÍŶÓÕÐÊÕ2026»¯Ñ§×¨ÒµÑо¿Éú£¨Ñ§Ë¶£©µ÷¼Á
ÒѾÓÐ8È˻ظ´
ÎïÀí»¯Ñ§ÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ106È˻ظ´
°Â¶û±¤Xinxin Xiao¿ÎÌâ×éÕÐÊÕÒ»Ãû¸ÚÎ»ÖÆ²©Ê¿£¨Ã¸»ùÉúÎïµç»¯Ñ§£©
ÒѾÓÐ0È˻ظ´
¼ÃÄÏ´óѧ ²ÄÁÏ¿ÆÑ§Ó빤³Ì Àî½ð¿¿ÎÌâ×é ÕÐÊÕµ÷¼ÁÉú2Ãû£¨2026¼¶£©
ÒѾÓÐ0È˻ظ´
Synthesis of NCo@CNT-NFT Hierarchical Carbon Dendrites.
ÒѾÓÐ0È˻ظ´
AgÄÉÃײÄÁÏ
ÒѾÓÐ0È˻ظ´
³¤´º¹¤³ÌѧԺÊÐÕþ¹¤³Ì·½ÏòÓв¿·Öµ÷¼ÁÃû¶î£¬»¶Ó´ó¼Òµ÷¼Áµ½ÎÒУ
ÒѾÓÐ0È˻ظ´
Õе÷¼Á
ÒѾÓÐ0È˻ظ´
26Äêµç³Ø·½Ïò²©Ê¿ÉêÇë
ÒѾÓÐ2È˻ظ´
Ô˶¯¿µ¸´Çóµ÷¼Á
ÒѾÓÐ0È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
´óÅ£Gerbrand Ceder×îÐÂþÀë×Óµç³ØÁ¦×÷£¨EES£¬2015Äê10ÔÂ30ÈÕ£©
ÒѾÓÐ2È˻ظ´
´óÅ£Gerbrand Ceder×îг¬¼¶ÎÞµÐ﮵çÁ¦×÷£¨EES£¬2015Äê10ÔÂ05ÈÕ£©
ÒѾÓÐ11È˻ظ´
Çó½ÌһЩ ¹úÍâÖøÃûµÚÒ»ÐÔÔÀí¼ÆËã×é
ÒѾÓÐ2È˻ظ´
ÊÀ½çÉϵ绯ѧÁìÓòÓÐÄÄЩ´óţѽ£¿
ÒѾÓÐ28È˻ظ´
¡¾½»Á÷¡¿¹úÍâµÄ﮵ç´óÅ£¿ÎÌâ×é
ÒѾÓÐ133È˻ظ´
¡¾ÇóÖú¡¿Ç󼏯ªÎÄÕÂ
ÒѾÓÐ1È˻ظ´

qq394871254
½ð³æ (ÕýʽдÊÖ)
Ժʿ
- ECEPI: 1
- Ó¦Öú: 137 (¸ßÖÐÉú)
- ½ð±Ò: 464.9
- É¢½ð: 816
- ºì»¨: 28
- Ìû×Ó: 992
- ÔÚÏß: 473.7Сʱ
- ³æºÅ: 1157563
- ×¢²á: 2010-11-28
- רҵ: µç»¯Ñ§
2Â¥2015-09-18 08:18:40
Ëͺ컨һ¶ä | ¸Ðл·ÖÏí |
3Â¥2015-09-23 08:56:18
K.S.
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 8567.1
- É¢½ð: 40
- ºì»¨: 1
- Ìû×Ó: 967
- ÔÚÏß: 74.3Сʱ
- ³æºÅ: 2076812
- ×¢²á: 2012-10-21
- ÐÔ±ð: GG
- רҵ: µç»¯Ñ§
4Â¥2016-05-05 08:56:43













»Ø¸´´ËÂ¥