EN01.08.06 : Synthesis of Mesoporous Transition Metal Oxides via Soft Template Method and Their Pseudocapacitive Behaviour

5:00 PM–7:00 PM Apr 4, 2018 (America - Denver)

PCC North, 300 Level, Exhibit Hall C-E

Tianlei Wang1 Meitang Liu1 Yuqing Kuai1

1, China University of Geosciences (Beijing), Beijing, , China

Supercapacitors have attracted more and more attention because of their higher energy density than traditional capacitors, and larger power density, shorter recharging time and longer cycle lifespan than rechargeable batteries [1, 2]. But low specific surface area about conventional electrode materials limits its capacitance, novel electrode materials can be improved into mesoporous electrodes materials [3, 4]. Mesoporous materials, due to high surface areas and tuneable pore sizes, exhibit a considerable application prospects in catalysis, adsorption, sensors, lithium-ion batteries, drug delivery, and nanodevices [5]. However, it is difficult to obtain mesoporous transition metal oxides because the hydrolysis and condensation of non-silica precursors are generally hard to control, while the thermal breakdown can also destroy structural integrity [6]. In this work, we synthesized series of mesoporous transition metal oxides via soft template method and explored their pseudocapacitive behaviour. Mesoporous transition metal oxides present excellent electrochemical performance, because the mesoporous structure can increase the contact area of electrode materials and electrolyte, shorten the transportation of ions and electrons path length and quicken the rate of diffusion, which can be expected to be applied to the construction of a new type of energy storage.

[1]T.L. Wang, M.T. Liu, H.W. Ma, Nanomaterials 2017, 7, 140.
[2]Y. Fu, M.T. Liu, H.W. Ma, T.L. Wang, K.R. Hu, C. Guan, Electrochimica Acta 2016, 191,916.
[3]W. Li, J Liu, D.Y. Zhao, Nature Reviews Materials 2016, 1, 1.
[4]Y. Ren, Z. Ma, P.G. Bruce, Chemical Society Reviews 2012, 41, 4909.
[5]U. Ciesla, F. Schüth, Microporous and Mesoporous Materials 1999, 27, 131.
[6]D. Gu, F. Schüth, Chemical Society Reviews 2014, 43,313.