![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Recently, the research team of Tang Yongbing, a researcher at the Functional Thin Film Materials Research Center of the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, and Zhou Zhiming, a professor at Chongqing University of Technology, used an in-situ two-step activation strategy to prepare a graded porous carbon cathode material. The water-based zinc ion hybrid battery based on this material exhibits excellent electrochemical energy storage performance. Related research results are titled In Situ Two-Step Activation Strategy Boosting Hierarchical Porous Carbon Cathode for an Aqueous Zn-Based Hybrid Energy Storage Device with High Capacity and Ultra-Long Cycling Life, published online in Small (DOI: 10.1002/smll.202003174 )on.
The limited and uneven distribution of lithium resources has prompted the gradual development of new energy storage devices based on abundant non-lithium alkaline (earth) metal ions. The high safety and low cost of aqueous electrolyte, as well as the advantages of zinc with environmental friendliness, good compatibility with aqueous solutions, and high theoretical specific capacity, have attracted attention to the development of aqueous zinc ion hybrid energy storage devices. However, the low specific capacity of activated carbon cathode materials limits the development of water-based zinc ion hybrid energy storage devices.
Considering that the ability of activated carbon materials to store ions depends on their porous structure, the researchers proposed an in-situ two-step activation strategy to design a hierarchical porous carbon material (HPAC) with reasonable micropore/mesopore pore size distribution. This strategy effectively controls the pore structure and pore size distribution on the one hand, and on the other hand enhances the structural stability, and has an ultra-high specific surface area. The aqueous zinc ion hybrid energy storage device assembled with the zinc anode shows high specific capacity ( 231 mAh g-1), excellent rate performance (119 mAh g-1@20 A g-1) and long cycle life (18000 cycles capacity retention rate ~ 70%). This research has reference significance for the development of environmentally friendly, low-cost and high-safety energy storage devices.
The research work was funded by Guangdong Provincial Key Special Project, National Natural Science Foundation of China, Guangdong Province, Shenzhen City, etc.
Schematic diagram of the working principle of the aqueous zinc ion hybrid energy storage device (a) and the corresponding charge and discharge curve (b), the in-situ Raman spectrum during the charge and discharge process (c), and the ratio performance comparison of other hybrid energy storage devices (d) , Performance comparison with other water-based zinc ion energy storage devices (e)
Solar LED lights are becoming increasingly popular as a sustainable and cost-effective lighting solution. From solar powered security lights to solar powered garden lights, these outdoor lights offer a range of benefits that make them an excellent choice for illuminating your outdoor spaces. The use of solar energy to power these lights means that they are not only environmentally friendly but also economical, saving you money on your energy bills. Whether you need solar lights for outside your home or solar sensor wall lights for added security, there is an option for everyone. With their long-lasting performance, easy installation, and low maintenance, solar LED lights are a smart and positive choice for anyone looking to light up their outdoor space.
Solar Powered Security Lights,Solar Led ,Solar Powered Garden Lights ,Solar Lights For Outside,Solar Sensor Wall Light
Ningbo Le Monde Import & Export Co., Ltd. , https://www.shineverlighting.com