最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級(jí)檢索
柔性W-O-C/碳?xì)饽z電極的制備和電催化氧化性能
作者:
作者單位:

浙江工業(yè)大學(xué)

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(51871201)；浙江省自然科學(xué)基金(LY16E010004)


Preparation and Electrocatalytic oxidation Performance ofFlexible W-O-C/Carbon Aerogel Electrodes
Author:
Affiliation:

Zhejiang University of Technology,College of Materials Science and Engineering

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問(wèn)統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評(píng)論
    摘要:

    本研究使用細(xì)菌纖維素為前驅(qū)體制備碳?xì)饽z(CA)，以其作為載體，通過(guò)浸漬和高溫處理制得了柔性W-O-C/CA和WC/CA復(fù)合電極材料，研究了制備工藝對(duì)材料形貌、物相和對(duì)甲醇電催化氧化性能的影響。隨著高溫處理溫度的上升和保溫時(shí)間的延長(zhǎng)，物相變化為：鎢前驅(qū)體→鎢氧化物(WO3、WO3-x、WO2)→W→WCx→WC。在700 ℃保溫2 h制得的柔性電極，負(fù)載顆粒主要物相為缺氧鎢氧化物(WO3-x)、WO2和少量碳化鎢(WC)，具有良好的甲醇電催化性能和長(zhǎng)循環(huán)穩(wěn)定性，0.8 V下電流密度為76.5 mA·cm-2，1000次循環(huán)后峰電流密度保持初始值的88%，有望用于便攜式或微型甲醇燃料電池陽(yáng)極。

    Abstract:

    In this study, carbon aerogel (CA) substrates were prepared by using bacterial cellulose as template, then flexible W-O-C/CA and WC/CA composite electrode materials were prepared by impregnation and high temperature treatment. The effects of preparation process on the phase, morphology and electrocatalytic performance of methanol were investigated. With the increase of heat treatment temperature and the extension of holding time, the phase change occur as tungsten precursor→tungsten oxide (WO3, WO3-x, WO2)→W→WCx→WC. For the flexible electrode prepared at 700 ℃ for 2 h, the phases of the supported particles are oxygen-deficient tungsten oxide (WO3-x) ,WO2 and tungsten carbide (WC). The electrode has good electrocatalytic performance for methanol oxidation (peak current density of 76.5 mA cm-2 at 0.8 V) and long-term cycling stability, the peak current density remains 88% of the initial value after 1000 cycles. This flexible electrode is expected to be used in the anode of portable or micro methanol fuel cell.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

沈忠偉,張健力,唐誼平,曹華珍,鄭國(guó)渠,侯廣亞.柔性W-O-C/碳?xì)饽z電極的制備和電催化氧化性能[J].稀有金屬材料與工程,2023,52(4):1303~1310.[Shen Zhongwei, Zhang Jianli, Tang Yiping, Cao Huazhen, Zheng Guoqu, Hou Guangya. Preparation and Electrocatalytic oxidation Performance ofFlexible W-O-C/Carbon Aerogel Electrodes[J]. Rare Metal Materials and Engineering,2023,52(4):1303~1310.]
DOI：10.12442/j. issn.1002-185X.20220168

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2022-03-04
  • 最后修改日期:2022-04-17
  • 錄用日期:2022-04-26
  • 在線發(fā)布日期: 2023-05-01
  • 出版日期: 2023-04-25