| 碳纳米纤维负载铁镍合金在锌空气电池中的应用 | |
| Application of Carbon Nanofiber Supported Iron-Nickel Alloy in Zinc-Air Battery | |
| 摘要: 析氧反应(OER)催化剂在锌空气电池(ZABs)储能过程中起着关键作用。我们开发了一种新型非贵金属基自支撑碳纳米纤维催化剂(NiδFe4-δ-CNF)。首先，以聚乙烯吡咯烷酮、过渡金属乙酸酯、N，N-二甲基甲酰胺为原料，采用静电纺丝法制备了网状前驱体。随后，通过高温退火处理，将其转化为三维(3D)多孔结构材料。合成的Ni1Fe1-CNF催化剂在浓度为1 mol·L-1 KOH的电解质溶液中具有较低的起始电位(230 mV)和过电势(280 mV，10 mA·cm-2)，性能优于商业RuO2。同时，将Ni1Fe1-CNF催化剂与商业Pt/C催化剂混合，作为空气阴极催化剂组装成ZAB，与商业的RuO2+Pt/C ZAB相比，Ni1Fe1-CNF+Pt/C ZAB具有更高的功率密度(122 mW·cm-2)、更低的充电电压以及更好的充放电循环稳定性。 | |
| 关键词: 铁镍纳米合金 碳纳米纤维 电催化 析氧反应 锌空气电池 | |
| 基金项目: 国家自然科学基金项目(No.52064049)、云南省应用基础研究重点项目(No.2019FY003023)资助 | |
| Abstract: Oxygen evolution reaction (OER) catalysts play an important role in zinc-air batteries (ZABs). A novel non-noble metal-based self-supported carbon nanofiber (NiδFe4-δ-CNF) catalyst was developed. First, the network precursors were prepared from polyvinylpyrrolidone, transition metal acetate, and N, N-dimethylformamide via the electrostatic spinning method. After annealing at high temperature, the precursors were transformed into three-dimensional (3D) multi-pore structure material. The synthesized Ni1Fe1-CNF catalyst has a lower initial potential (230 mV) and overpotential (280 mV, 10 mA·cm-2) in electrolyte solution of 1 mol·L-1 KOH, and its performance is superior to that of commercial RuO2. Meanwhile, ZAB was assembled by mixing Ni1Fe1-CNF catalyst with commercial Pt/C catalyst as the air cathode. Compared with commercial RuO2+Pt/C ZAB, Ni1Fe1-CNF+Pt/C ZAB had a higher power density (122 mW·cm-2), lower charging voltage and better charge/discharge cycle stability. | |
| Keywords: nickel-iron nanoalloy carbon nanofibers electrocatalysis oxygen evolution reaction zinc-air battery | |
| 投稿时间：2021-08-29 修订日期：2021-12-27 | |
| 摘要点击次数: 1870 | |
| 全文下载次数: 410 | |
| 蔡胜,刘元震,王春琼,邹肖肖,梅至远,蒋静雯,刘婷婷,郭洪.碳纳米纤维负载铁镍合金在锌空气电池中的应用[J].无机化学学报,2022,38(3):415-422. | |
| 查看全文 查看/发表评论 下载PDF阅读器 | |
| Support information: | |
|
| |
|
| |
|
| |