使用具有宽电化学稳定窗口的混合电解质的高性能水系钠离子电池。
High-performance aqueous sodium-ion battery using a hybrid electrolyte with a wide electrochemical stability window.
作者信息
Shen Yanxin, Han Xiaonan, Cai Tonghui, Hu Haoyu, Li Yanpeng, Zhao Lianming, Hu Han, Xue Qingzhong, Zhao Yi, Zhou Jin, Gao Xiuli, Xing Wei, Wang Xiaoning
机构信息
State Key Laboratory of Heavy Oil Processing, School of Material Science and Engineering, China University of Petroleum Qingdao 266580 P. R. China
Institute of New Energy, China University of Petroleum Qingdao 266580 P. R. China
出版信息
RSC Adv. 2020 Jul 6;10(43):25496-25499. doi: 10.1039/d0ra04640j. eCollection 2020 Jul 3.
The practical application of aqueous sodium-ion batteries (ASIBs) is limited by the electrolysis of water, which results in a low working voltage and energy density of ASIBs. Here, a NaClO-based acetonitrile/water hybrid electrolyte (NaClO(HO)AN) is applied to ASIBs for the first time, which effectively extends the electrochemical stability window (ESW) to 3.0 V and reduces the internal resistance of the battery. Based on this hybrid electrolyte, an ASIB full cell using carbon coated NaKV(PO) and NaTi(PO) as the cathode and anode materials, respectively, can afford a discharge capacity and energy density of 52 mA h g and 51 W h kg, respectively, at a current density of 1 A g. The energy density of this battery exceeds almost all reported traditional ASIBs.
水系钠离子电池（ASIBs）的实际应用受到水分解的限制，这导致ASIBs的工作电压和能量密度较低。在此，一种基于NaClO的乙腈/水混合电解质（NaClO(HO)AN）首次应用于ASIBs，它有效地将电化学稳定窗口（ESW）扩展到3.0 V，并降低了电池的内阻。基于这种混合电解质，分别使用碳包覆的NaKV(PO)和NaTi(PO)作为正负极材料的ASIB全电池，在1 A g的电流密度下，放电容量和能量密度分别可达52 mA h g和51 W h kg。该电池的能量密度几乎超过了所有已报道的传统ASIBs。
Zotero 插件