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A high energy and power li-ion capacitor based on a TiO2 nanobelt array anode and a graphene hydrogel cathode

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : A high energy and power li-ion capacitor based on a TiO2 nanobelt array anode and a graphene hydrogel cathode
นักวิจัย : Wang, Huanwen , Guan, Cao , Wang, Xuefeng , Fan, Hong Jin
คำค้น : DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Wang, H., Guan, C., Wang, X., & Fan, H. J. (2015). A high energy and power li-ion capacitor based on a TiO2 nanobelt array anode and a graphene hydrogel cathode. Small, 11(12), 1470-1477. , 1613-6810 , http://hdl.handle.net/10220/25379 , http://dx.doi.org/10.1002/smll.201402620
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Small
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A novel hybrid Li-ion capacitor (LIC) with high energy and power densities is constructed by combining an electrochemical double layer capacitor type cathode (graphene hydrogels) with a Li-ion battery type anode (TiO2 nanobelt arrays). The high power source is provided by the graphene hydrogel cathode, which has a 3D porous network structure and high electrical conductivity, and the counter anode is made of free-standing TiO2 nanobelt arrays (NBA) grown directly on Ti foil without any ancillary materials. Such a subtle designed hybrid Li-ion capacitor allows rapid electron and ion transport in the non-aqueous electrolyte. Within a voltage range of 0.0−3.8 V, a high energy of 82 Wh kg−1 is achieved at a power density of 570 W kg−1. Even at an 8.4 s charge/discharge rate, an energy density as high as 21 Wh kg−1 can be retained. These results demonstrate that the TiO2 NBA//graphene hydrogel LIC exhibits higher energy density than supercapacitors and better power density than Li-ion batteries, which makes it a promising electrochemical power source.

บรรณานุกรม :
Wang, Huanwen , Guan, Cao , Wang, Xuefeng , Fan, Hong Jin . (2557). A high energy and power li-ion capacitor based on a TiO2 nanobelt array anode and a graphene hydrogel cathode.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Wang, Huanwen , Guan, Cao , Wang, Xuefeng , Fan, Hong Jin . 2557. "A high energy and power li-ion capacitor based on a TiO2 nanobelt array anode and a graphene hydrogel cathode".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Wang, Huanwen , Guan, Cao , Wang, Xuefeng , Fan, Hong Jin . "A high energy and power li-ion capacitor based on a TiO2 nanobelt array anode and a graphene hydrogel cathode."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Wang, Huanwen , Guan, Cao , Wang, Xuefeng , Fan, Hong Jin . A high energy and power li-ion capacitor based on a TiO2 nanobelt array anode and a graphene hydrogel cathode. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.