Micro-capacitor breakthrough
Print Edition
Chinese scientists have constructed a prototype of planar sodium-ion microcapacitors with high power density, superior thermal stability and excellent mechanical flexibility.
The prototype was co-developed by two research groups led by Wu Zhongshuai from the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences, and Bao Xinhe, a CAS academic and president of the University of Science and Technology of China.
By coupling with a battery-type urchin-like sodium titanate anode and a capacitor-type nanoporous activated graphene cathode, the as-fabricated all-solid-state NIMCs working at 3.5 volts exhibited high volumetric energy density and an ultralow self-discharge rate, according to the researchers.
Micro-capacitors and micro-batteries have been acknowledged as key power sources for miniaturized smart and integrated electronics, such as remote sensors, micro-robots and self-powered micro-systems.
The NIMCs assembled by DICP scientists would enjoy abundant sodium resources, low cost and electrochemical properties of sodium compared with lithium. While showing great potential for making flexible micro-electronic devices, lithium鈥檚 massive applications will likely be snuffed out by limited supply and rising cost.
The micro-supercapacitors with multi-directional ion diffusion pathways and better capacitance and rate capability, hold great potential.
- About Us
- |
- Terms of Use
- |
-
RSS - |
- Privacy Policy
- |
- Contact Us
- |
- Shanghai Call Center: 962288
- |
- Tip-off hotline: 52920043
- 娌狪CP璇侊細娌狪CP澶05050403鍙-1
- |
- 浜掕仈缃戞柊闂讳俊鎭湇鍔¤鍙瘉锛31120180004
- |
- 缃戠粶瑙嗗惉璁稿彲璇侊細0909346
- |
- 骞挎挱鐢佃鑺傜洰鍒朵綔璁稿彲璇侊細娌瓧绗354鍙
- |
- 澧炲肩數淇′笟鍔＄粡钀ヨ鍙瘉锛氭勃B2-20120012
Copyright 漏 1999- Shanghai Daily. All rights reserved.Preferably viewed with Internet Explorer 8 or newer browsers.
