title: Anodic WO3 mesosponge @ carbon: a novel binder-less electrode for advanced energy storage devices.
abstract: A novel design for an anodic WO3 mesosponge @ carbon has been introduced as a highly stable and long cyclic life Li-ion battery electrode. The nanocomposite was successfully synthesized via single-step electrochemical anodization and subsequent heat treatment in an acetylene and argon gas environment. Morphological and compositional characterization of the resultant materials revealed that the composite consisted of a three-dimensional interconnected network of WO3 mesosponge layers conformally coated with a 5 nm thick carbon layer and grown directly on top of tungsten metal. The results demonstrated that the carbon-coated mesosponge WO3 layers exhibit a capacity retention of 87% after completion of 100 charge/discharge cycles, which is significantly higher than the values of 25% for the crystalline (without carbon coating) or 40% for the as-prepared mesosponge WO3 layers. The improved electrochemical response was attributed to the higher stability and enhanced electrical conductivity offered by the carbon coating layer.
authors: †Korea Electro-technology Research Institute (KERI), Changwon 642-120, Republic of Korea.|‡Electrical Functionality Material Engineering (KERI Campus), Korea University of Science and Technology, Daejeon 305-333, Republic of Korea.
authors: Syed Atif
authors: SA
authors: Pervez
authors: †Korea Electro-technology Research Institute (KERI), Changwon 642-120, Republic of Korea.
authors: Doohun
authors: D
authors: Kim
authors: †Korea Electro-technology Research Institute (KERI), Changwon 642-120, Republic of Korea.|‡Electrical Functionality Material Engineering (KERI Campus), Korea University of Science and Technology, Daejeon 305-333, Republic of Korea.
authors: Chil-Hoon
authors: CH
authors: Doh
authors: †Korea Electro-technology Research Institute (KERI), Changwon 642-120, Republic of Korea.|‡Electrical Functionality Material Engineering (KERI Campus), Korea University of Science and Technology, Daejeon 305-333, Republic of Korea.
authors: Umer
authors: U
authors: Farooq
authors: †Korea Electro-technology Research Institute (KERI), Changwon 642-120, Republic of Korea.
authors: Hae-Young
authors: HY
authors: Choi
authors: †Korea Electro-technology Research Institute (KERI), Changwon 642-120, Republic of Korea.
authors: Jung-Hee
authors: JH
authors: Choi
keywords: WO3; anodization; battery; carbon-coating; mesosponge