Zhang Meng, Song Hengshuai, Ma Yujia, Yang Shaohua, Xie Fazhi
School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, China.
Anhui Accord Science and Technology Co., Ltd., Huangshan 242700, China.
Molecules. 2023 Jul 24;28(14):5618. doi: 10.3390/molecules28145618.
The performance of lead-acid batteries could be significantly increased by incorporating carbon materials into the negative electrodes. In this study, a modified carbon material developed via a simple high-temperature calcination method was employed as a negative electrode additive, and we have named it as follows: N-doped chitosan-derived carbon (NCC). The performance of this material was compared with a control battery containing activated carbon (AC). X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy were engaged in analyzing the crystal structure and morphology of the material. Afterwards, the electrochemical and battery performance was examined through cyclic voltammetry (CV), linear voltammetry (LSV) and constant current charge-discharge testing. Markedly, the electrode plate containing 1 wt.% NCC indicates the highest specific capacity (106.48 F g) as compared to the control battery, which is 1.56 times higher than the AC electrode plate and 4.75 times higher than the blank electrode plate. The linear voltammetry shows that the hydrogen precipitation current density of the 1 wt.% NCC electrode plate is only -0.028 A cm, a much higher value than that of the AC electrode plate. In addition, the simulated battery containing 1 wt.% NCC has a cycle life of 4324 cycles, which is 2.36 times longer than that of the same amount of additive AC battery (1834 cycles) and 5.34 times longer than that of the blank battery (809 cycles). In summary, NCC carbon has the advantage of extending the life of lead-acid batteries, rendering it a promising candidate for lead-acid battery additives.
通过将碳材料掺入负极，可以显著提高铅酸电池的性能。在本研究中，采用一种通过简单高温煅烧法制备的改性碳材料作为负极添加剂，我们将其命名为：氮掺杂壳聚糖衍生碳（NCC）。将该材料的性能与含有活性炭（AC）的对照电池进行了比较。采用X射线衍射（XRD）、扫描电子显微镜（SEM）和拉曼光谱分析了该材料的晶体结构和形貌。随后，通过循环伏安法（CV）、线性伏安法（LSV）和恒流充放电测试考察了其电化学性能和电池性能。值得注意的是，与对照电池相比，含有1 wt.% NCC的电极板显示出最高的比容量（106.48 F g），比AC电极板高1.56倍，比空白电极板高4.75倍。线性伏安法表明，1 wt.% NCC电极板的析氢电流密度仅为-0.028 A cm，远高于AC电极板。此外，含有1 wt.% NCC的模拟电池的循环寿命为4324次循环，比相同添加剂用量的AC电池（1834次循环）长2.36倍，比空白电池（809次循环）长5.34倍。综上所述，NCC碳具有延长铅酸电池寿命的优势，使其成为铅酸电池添加剂的一个有前途的候选材料。
