%0 Journal Article
%T 一步水热合成具有高优异性能的W<sub>18</sub>O<sub>49</sub>纳米线/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>纳米片复合材料用于超级电容器的相关研究<br> One-Step Hydrothermal Synthesis of W<sub>18</sub>O<sub>49</sub> NWs/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> Nanosheets Composites with Superior Performance for Advanced Supercapacitors
%A 张亚静
%A 李璐
%J Material Sciences
%P 989-997
%@ 2160-7621
%D 2022
%I Hans Publishing
%R 10.12677/MS.2022.1210110
%X 近年来，超级电容器作为功率型能源储存装置因具有高功率密度、快速充放电速率、长循环寿命等优点，备受研究者们的关注，其优异性能的关键在于电极材料的选择。目前，W<sub>18</sub>O<sub>49</sub>纳米结构被誉为最有潜力的超级电容器电极材料。本文通过一步水热法成功合成海胆状的<span>W</span><sub>18</sub><span>O</span><sub>49</sub>纳米结构，并在此基础上进一步合成<span>W</span><sub>18</sub><span>O</span><sub>49</sub>纳米线/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>纳米片复合材料。该材料不仅提高了<span>W</span><sub>18</sub><span>O</span><sub>49</sub>纳米结构的导电性，同时抑制<span>Ti</span><sub>3</sub><span>C</span><sub>2</sub><span>T</span><sub>x</sub>纳米片的堆叠，从而显示出极好的储存性能。扫速为1 mV？s<sup>？1</sup>时，其比电容值为410 F？g<sup>？1</sup>；扫速在50 mV？s<sup>？1</sup>时，其比容量为349 F？g<sup>？1</sup>。在5 A？g<sup>？1</sup>的电流密度下，循环8000次的循环保持率为88%，有着优异的循环稳定性。本工作探究了复合材料作为超级电容器电极优越的电化学性能，为其在电化学储能器件中的应用提供了新的方向。<br />
In recent years, as a power-based energy storage device, supercapacitors have attracted researchers’ attention due to their ad-vantages such as higher power density, fast charge and discharge rate and long cycle life. The key to their excellent performance lies in the selection of electrode materials. At present, <span>W</span><sub>18</sub><span>O</span><sub>49</sub> nanostructures are regarded as the most potential electrode material for supercapacitors. In this paper, sea urchin-like W18O49 nanostructures were successfully synthesized by one-step hydro-thermal method, and <span>W</span><sub>18</sub><span>O</span><sub>49</sub> NWs/<span>Ti</span><sub>3</sub><span>C</span><sub>2</sub><span>T</span><sub>x</sub> nanosheets composites were further synthesized on this basis. This material not only improves the electrical conductivity of W18O49 nanostructures, but also inhibits the stacking of <span>Ti</span><sub>3</sub><span>C</span><sub>2</sub><span>T</span><sub>x</sub> nanosheets, thus showing excellent storage performance. When the sweep speed is 1 mV？s<sup>？1</sup>, the specific capacitance value is 410 F？g<sup>？1</sup>; When the sweep speed is 50 mV？s<sup>？1</sup>, the specific capacity is 349 F？g<sup>？1</sup>. Under the current density of 5 A？g？1, the cycle retention rate of 8000 cycles is 88%, which has excellent stability. This work explores the superior electro-chemical performance of composite materials as electrodes for supercapacitors and provides a new direction for their application in electrochemical energy storage devices.
%K 超级电容器，W<sub>18</sub>O<sub>49</sub>纳米线，W<sub>18</sub>O<sub>49</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>复合电极材料<br> Supercapacitor
%K W<sub>18</sub>O<sub>49</sub> NWs
%K W<sub>18</sub>O<sub>49</sub>/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>Tx Composite Electrode Material
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=57104