【摘 要】
：
将不同含量的Co3O4(2%,4%,6%,8%,质量分数)作为添加剂加入到储氢合金中,采用机械混合法进行改性处理.对添加Co3O4的合金电极的电化学性能和电极过程进行研究.结果表明:放电容
【机 构】
：
中南大学化学化工学院,中南大学粉末冶金国家重点实验室
论文部分内容阅读
将不同含量的Co3O4(2%,4%,6%,8%,质量分数)作为添加剂加入到储氢合金中,采用机械混合法进行改性处理.对添加Co3O4的合金电极的电化学性能和电极过程进行研究.结果表明:放电容量有了较大增加,添加2%、4%、6%、8% Co3O4的电极放电容量比空白电极容量分别增加0.83%,4.86%,7.18%和9.21%.线性极化曲线和电化学阻抗谱测试表明,添加Co3O4降低了电极的电荷转移电阻.循环伏安、扫描电镜和EDS测试表明,添加的Co3O4可部分溶解,发生Co-Co(OH)2可逆氧化一还原反应,从而改善储氢合金的电化学性能.
其他文献
The structure and high-temperature electrochemical properties of the as-cast and annealed (940 ℃, 8 h) La0.60Nd0.15Mg0.25Ni3.3Si0.10 hydrogen storage alloys we
We reported on the successful synthesis of the Nd:YAG (Nd:Y3Al5O12) nano-powders by using urea as the precipitant with the microwave assisted homogeneous precip
纸张通常有定量稳定,厚薄适中,布浆均匀,内在、外观质量良好的要求。介绍了采用纸张的定量、厚度、均匀度的自动监控技术,实施生产、技术管理,对确保产品质量,提高生产效率,
The self-assembly of 5-bromoisophthalic acid (H2BIPA) with Eu(NO3)3·6H2O under the hydrothermal conditions gave a 3D coordination polymer, Eu2(BIPA)3(CH3CH2OH)
The full densification polycrystalline cerium hexaboride (CeB6) cathode material was prepared by using the spark plasma sintering (SPS) method in an oxygen free
Y3MnxFe4.85-xO12 (x=0, 0.02, 0.04, 0.06, 0.08 and 0.1) garnet ferrites (YMnlG) were prepared by conventional solid-state reaction method in air atmosphere. The
A series of CaMoO4 phosphors doped with trivalent dysprosium ions (Dy3+) and lithium (Li+) were prepared by solid state method at 750 ℃ for 3 h. X-ray diffract
The formation of secondary Ln(Ⅲ) solid phases (e.g., Nd2(CO3)3 and Sm2(CO3)3) was studied as a function of the humic acid concentration in 0.1 mol/L NaClO4 aqu
通过建立一经验公式来预测熔化极气体保护焊十字接头根部失效的疲劳寿命.采用高强可时效硬化的AA7075-T6铝合金作为基材进行焊接实验.实验设计概念被用来优化进行疲劳实验所
Photoluminescence (PL) and colorimetric properties of white-light emission SrA12Si2O8:Eu2+,Mn2+ phosphor were tuned effectively through incorporating Si-N bond