TiO2/graphene sandwich paper as an anisotropic electrode for high rate lithium ion batteries.
نویسندگان
چکیده
We designed an anisotropic electrode, in which Li(+) ion insertion and diffusion are anisotropic, by controlled growth of TiO2 nanosheets parallel to the surface of graphene paper. The anisotropic electrode gives a gravimetric capacity of 112 mA h g(-1) at an ultra-high rate of 100 C (corresponding to 36 s of charge-discharge), 3 times higher than that of a referenced isotropic electrode. The results indicate that such an anisotropic electrode can be useful in the search for high-power lithium ion batteries.
منابع مشابه
Biomimetic layer-by-layer Co-mineralization approach towards TiO2/Au nanosheets with high rate performance for lithium ion batteries.
We fabricated a sandwich-like branched-polyethyleneimine (b-PEI)/TiO2/Au/graphene oxide (GO) nanocomposite through a biomimetic layer-by-layer co-mineralization approach, and the polymer b-PEI was believed to act as both an inducing agent for the hydrolysis of titanium bis(ammonium lactato)-dihydroxide (Ti-BALDH) and a reducing agent for the reduction of HAuCl4 in the synthetic procedure. Upon ...
متن کاملAn Effective Nitrogen Doping Technique for Improving the Performance of Lithium Ion Batteries with CNT Based Electrodes
Lithium ion batteries are among the most used rechargeable batteries in the world. Carbon nanostructures including carbon nanotubes (CNTs) are considered as important electrode materials for this kind of batteries. Therefore improving the performance of these carbon based electrodes in Lithium ion batteries is an important issue and attracts much attention in the battery community. In this manu...
متن کاملElectrode Materials for Lithium Ion Batteries: A Review
Electrochemical energy storage systems are categorized into different types, according to their mechanisms, including capacitors, supercapacitors, batteries and fuel cells. All battery systems include some main components: anode, cathode, an aqueous/non-aqueous electrolyte and a membrane that separates anode and cathode while being permeable to ions. Being one of the key parts of any new electr...
متن کاملPhotothermally reduced graphene as high-power anodes for lithium-ion batteries.
Conventional graphitic anodes in lithium-ion batteries cannot provide high-power densities due to slow diffusivity of lithium ions in the bulk electrode material. Here we report photoflash and laser-reduced free-standing graphene paper as high-rate capable anodes for lithium-ion batteries. Photothermal reduction of graphene oxide yields an expanded structure with micrometer-scale pores, cracks,...
متن کاملGraphene/metal oxide composite electrode materials for energy storage
nt matter & 2011 n.2011.11.001 thor. Tel.: +86 24 6. [email protected] ( ve equally contrib Abstract Recent progress on graphene/metal oxide composites as advanced electrode materials in lithium ion batteries (LIBs) and electrochemical capacitors (ECs) is described, highlighting the importance of synergistic effects between graphene and metal oxides and the beneficial role of graphene in composite...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Nanoscale
دوره 5 17 شماره
صفحات -
تاریخ انتشار 2013