Flexible aqueous Ca-ion full battery with super-flat discharge voltage plateau
作者机构：School of Materials Science and EngineeringShenzhen UniversityShenzhen 518055China State Key Laboratory of Advanced Welding and JoiningHarbin Institute of TechnologyShenzhen 518055China Flexible Printed Electronic Technology CenterHarbin Institute of TechnologyShenzhen 518055China School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055China College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518055China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第1期
页 面：701-708页
核心收录：
基 金：supported by the National Natural Science Foundation of China(No.21805063) the Natural Science Foundation of Guangdong Province for Distinguished Young Scholars(No.2018B030306022) the Project of International Science and Technology Cooperation in Guangdong Province(No.2020A0505100016) the Shenzhen Sauvage Nobel Laureate Laboratory for Smart Materials and Research Innovation Fund of Harbin Institute of Technology(No.HIT.NSRIF.2020063) The authors also acknowledge the support from the China Postdoctoral Science Foundation(No.2018M641823)
主 题：multivalent metal ion battery aqueous Ca-ion battery voltage plateau ln2O3(ITO) flexible and wearable
摘 要：Recently,multivalent metal-ion batteries have attracted considerable interests on the merits of their natural abundance and multielectron redox ***,the development of Ca-ion battery is still in their preliminary stage because of the lack of suitable electrode *** Ca-storage performance of the existing materials is still unsatisfactory with low capacity,poor cyclic stability,as well as sloping discharge profiles,which cannot provide stable energy *** this work,transition metal oxide Sn-doped In2O3(ITO)has been explored as the aqueous Ca-ion battery anode,which could deliver a high discharge capacity of 71.2 mAh·g^(-1) with an ultra-flat discharge voltage *** Ca storage mechanism was revealed to be reversible conversion reaction based on ex-situ X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and transmission electron microscopy(TEM)characterizations.A flexible aqueous Ca-ion battery was subsequently assembled with zinc hexacyanoferrate(ZnHCF)cathode and ITO anode sandwiched by hydrogel electrolyte,which could deliver a high specific capacity of 75.3 mAh·g^(-1) at 0.4 A·g^(-1) with a flat output voltage plateau at around 0.8 *** bendable and flexible Ca-ion battery with decent voltage output will pave the way for the energy storage devices towards practical applications in flexible and wearable electronics.
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