Lithium–sulfur batteries are a promising energy-storage technology due to their relatively low cost and high theoretical energy density. However, one of their major technical problems is the shuttling of soluble polysulfides between electrodes, resulting in rapid capacity fading. Here, we present a metal–organic framework (MOF)-based battery separator to mitigate the shuttling problem. We show that the MOF-based separator acts as an ionic sieve in lithium–sulfur batteries, which selectively sieves Li+ ions while e ciently suppressing undesired polysulfides migrating to the anode side. When a sulfur-containing mesoporous carbon material (approximately 70 wt% sulfur content) is used as a cathode composite without elaborate synthesis or surface modification, a lithium–sulfur battery with a MOF-based separator exhibits a low capacity decay rate (0.019% per cycle over 1,500 cycles). Moreover, there is almost no capacity fading after the INITIAL 100 cycles. Our approach demonstrates the potential for MOF-based materials as separators for energy-storage applications.
When 3GPP started standardizing the IMS a few years ago, most analysts expected the
number of IMS deploymentsto grow dramatically as soon the INITIAL IMS specifications were
ready (3GPP Release 5 was functionallyfrozenin the first half of 2002and completedshortly
after that). While those predictions have proven to be too aggressive owing to a number of
upheavals hitting the ICT (Information and Communications Technologies) sector, we are
now seeing more and more commercial IMS-based service offerings in the market. At the
time of writing (May 2008), there are over 30 commercial IMS networks running live traffic,
addingup to over10million IMS users aroundthe world; the IMS is beingdeployedglobally.
In addition, there are plenty of ongoing market activities; it is estimated that over 130 IMS
contracts have been awarded to all IMS manufacturers. The number of IMS users will grow
substantially as these awarded contracts are launched commercially. At the same time, the
number of IMS users in presently deployed networks is steadily increasing as new services
are introduced and operators running these networks migrate their non-IMS users to their
IMS networks.
My association with the theory of controls in continuous time started during my studies at
the Indian Institute of Technology, Kharagpur, India, in 1974 as an undergraduate student
in the Controls and Power program. The INITIAL introduction by Professors Kesavamurthy,
Y. P. Singh, and Rajagopalan laid the foundation for a good basic understanding of the
subject matter. This pursuit and further advanced study in the field of digital controls
continued during my days as a graduate student in the Electrical and Systems Engineering
Department at the University of Connecticut in Storrs, from 1983 to 1988.
This document provides general hardware and layoutconsiderations and guidelines for hardware engineersimplementing a DDR3 memory subsystem.The rules and recommendations in this document serve as anINITIAL baseline for board designers to begin their specificimplementations, such as fly-by memory topology.
應用無跡卡爾曼濾波算法(UKF)進行鋰電池的SOC估計,采用Thevenin二階RC等效電路模型,對HPPC電池脈沖充放電實驗數據進行Matlab處理,得到較為準確的模型.通過在Matlab中編寫算法程序,對不同工況的估計值與實際值進行誤差估算及對比分析,通過此算法進行SOC估計,得到該算法可有效降低系統誤差并糾正SOC的初值偏差.The non trace Calman filter (UKF) is applied to the SOC estimation of lithium battery. The Thevenin two order RC equivalent circuit model is used to process the HPPC battery pulse charge discharge experimental data by Matlab processing, and a more accurate model is obtained. By writing algorithm program in Matlab, the error estimation and comparison analysis of the estimated value and actual value of different states are carried out, and the SOC estimation is carried out by this algorithm. The algorithm can effectively reduce the system error and correct the INITIAL value deviation of the SOC.
VIP專區-嵌入式/單片機編程源碼精選合集系列(65)資源包含以下內容:1. DM9161應用電路原理圖來自DAVICOM網站。需要的可以自由下載.2. ALTERA CPLD器件的配置與下載,貢獻給初學習者,非長有用.3. This design package includes reference materials for creating a
USB - PS/2 combination mouse that a.4. 字符表示的十六進制數轉化為相應的整數   
錯誤則返回    -1   .5. C51的12864m.6. 8個字LED點陣的顯示程序.7. 51+ch375超級經典的U盤讀寫程序嘿嘿趕快下載把.8. PWM控制電機C程序-已通過實驗測試
PWM控制精確控制電機的轉動..9. C51串口單工通訊程序一成功通過測試,請放心下載.10. 來自網上好心人的好東東,關于SD卡讀寫的,內附protel原理圖.11. 設計輸入
! 多種設計輸入方法
– Quartus II
• 原理圖式圖形設計輸入
• 文本編輯
– AHDL, VHDL, Verilog
• 內存編輯
.12. 全是FPGA的例子 對大家應該有好處 大家趕快下把 知識不等人.13. 此為編程代碼示例.14. 此為編程代碼示例.15. 我在spartan-3e starter kit 的板上實現了mc8051.16. 完成MP3播放功能.17. 一個關于實時時鐘驅動方面的程序(ARM7).18. 遍歷二叉樹的4個非遞歸算法
vc編程基礎.19. 快速排序的非遞歸算法
vc編程練習.20. 雷達高頻接收機.21. 我的開發板的所有測試程序.22. ps2的驅動.23. 密度測試儀的源碼.24. 本程序主要內容18b20+s52+uart單點測溫詳細c51程序.25. CPLD 9536 程序
我自己用的代碼.
VHDL語言.26. AMD嵌入式處理器AU1200開發板原理圖.27. cpld3128開發板的原理圖 很有用,已經做成PCB,需要的話可以聯系我.28. ertfs文件系統里面既有完整ucos程序.29. 基于atmega128的交通信號燈控制程序.30. 利用軟件編寫的I2C傳輸界面程序,適用于現有4位機等匯編語言中!.31. I2C控制程序,供大家學習參考,使用時根據自己的系統修改..32. This designs uses a Nios II system to demonstrate how to read from the SD card. The software reads W.33. his design is the INITIAL design when the board is powered-up. It increments a counter and displays.34. 用于多于9個串口的ce驅動程序。時間倉促。可以參考.35. CSD卡的dos驅動程序源碼.36. ADT700的小程序.37. 嵌入式的小程序.38. 基于cpld的hdb3編碼器
基于cpld的hdb3編碼器.39. 基于cpld的交通燈設計
?赾pld的交通燈設計.40. 用于ARM9系列的S3C2440A的bootloader,Linux平臺.