Enhancing Supercapacitor Performance of NiCoMn‐Layered Double Hydroxide with Ag–Citrate/Polyaniline Nanocomposites

IF 3.6 4区工程技术 Q3 ENERGY & FUELS

Energy technology Pub Date : 2024-11-17 DOI:10.1002/ente.202401730

Ammar Makda, Mohsin Ali Marwat, Muhammad Hamza Mahmood, Abdullah Naeem, Syed Muhammad Abdullah, Muhammad Humayun, Muhammad Ramzan Abdul Karim, Mohamed Bououdina, Muhammad Zubair Khan, Muhammad Bilal Hanif

{"title":"Enhancing Supercapacitor Performance of NiCoMn‐Layered Double Hydroxide with Ag–Citrate/Polyaniline Nanocomposites","authors":"Ammar Makda, Mohsin Ali Marwat, Muhammad Hamza Mahmood, Abdullah Naeem, Syed Muhammad Abdullah, Muhammad Humayun, Muhammad Ramzan Abdul Karim, Mohamed Bououdina, Muhammad Zubair Khan, Muhammad Bilal Hanif","doi":"10.1002/ente.202401730","DOIUrl":null,"url":null,"abstract":"Layered double hydroxide (LDH) has a layered structure, which makes it a strong candidate for supercapacitors (SC) due to its high surface area. However, they suffer from low conductivity due to insufficient charge transfer across their layers. This research aims to overcome this obstacle by introducing conductive channels among the layers by the addition of Ag–citrate and polyaniline (PANI). Consequently, five electrodes (S1–5) were made from NiCoMn LDH (referred to as LDH henceforth) and 2:1 Ag–citrate and PANI composite (Ag/PANI) in different ratios and made into electrodes. Electrochemical analysis revealed successful improvement in the performance of LDH as the fraction of Ag/PANI increased until it equaled Ag/PANI where the highest specific capacitance of 617 F g−1 was obtained, which is 12% greater than the value for solely LDH electrode (550 F g−1). A device was fabricated with the best electrode (S3) and activated carbon electrode, which demonstrated energy densities and power densities of 41 WhKg−1 and 412.5 W Kg−1 and 14 WhKg−1and 8250 W Kg−1 at 0.5 and 10 A g−1 current densities, respectively. It also exhibited a capacitive retention of about 75% at 3000 galvanostatic charge–discharge cycles. These results encourage the use in of NiCoMn LDH, in a 1:1 ratio with Ag/PANI in SCs due to its remarkable performance.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"51 1","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1002/ente.202401730","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

Layered double hydroxide (LDH) has a layered structure, which makes it a strong candidate for supercapacitors (SC) due to its high surface area. However, they suffer from low conductivity due to insufficient charge transfer across their layers. This research aims to overcome this obstacle by introducing conductive channels among the layers by the addition of Ag–citrate and polyaniline (PANI). Consequently, five electrodes (S1–5) were made from NiCoMn LDH (referred to as LDH henceforth) and 2:1 Ag–citrate and PANI composite (Ag/PANI) in different ratios and made into electrodes. Electrochemical analysis revealed successful improvement in the performance of LDH as the fraction of Ag/PANI increased until it equaled Ag/PANI where the highest specific capacitance of 617 F g−1 was obtained, which is 12% greater than the value for solely LDH electrode (550 F g−1). A device was fabricated with the best electrode (S3) and activated carbon electrode, which demonstrated energy densities and power densities of 41 WhKg−1 and 412.5 W Kg−1 and 14 WhKg−1and 8250 W Kg−1 at 0.5 and 10 A g−1 current densities, respectively. It also exhibited a capacitive retention of about 75% at 3000 galvanostatic charge–discharge cycles. These results encourage the use in of NiCoMn LDH, in a 1:1 ratio with Ag/PANI in SCs due to its remarkable performance.

查看原文本刊更多论文

用硝酸银/聚苯胺纳米复合材料提高镍钴锰层状双氢氧化物的超级电容器性能

层状双氢氧化物（LDH）具有层状结构，因其表面积大而成为超级电容器（SC）的理想材料。然而，由于跨层电荷转移不足，它们的导电率很低。本研究旨在通过添加柠檬酸银和聚苯胺 (PANI) 在层间引入导电通道来克服这一障碍。因此，以 NiCoMn LDH（以下简称 LDH）和 2:1 的柠檬酸银与 PANI 复合材料（Ag/PANI）为原料，按不同比例制成了五个电极（S1-5）。电化学分析表明，随着 Ag/PANI 比例的增加，LDH 的性能得到了成功的改善，直到 Ag/PANI 的比例相等时，LDH 的最高比电容为 617 F g-1，比纯 LDH 电极的值（550 F g-1）高出 12%。利用最佳电极（S3）和活性炭电极制作的装置在 0.5 和 10 A g-1 电流密度下的能量密度和功率密度分别为 41 WhKg-1 和 412.5 W Kg-1 以及 14 WhKg-1 和 8250 W Kg-1。此外，在 3000 次电静态充放电循环中，它的电容保持率约为 75%。由于镍钴锰 LDH 性能出众，这些结果鼓励人们在 SC 中以 1:1 的比例使用镍钴锰 LDH 和 Ag/PANI。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Energy technology ENERGY & FUELS-

CiteScore

7.00

自引率

5.30%

发文量

审稿时长

1.3 months

期刊介绍： Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy. This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g., new concepts of energy generation and conversion; design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers; improvement of existing processes; combination of single components to systems for energy generation; design of systems for energy storage; production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels; concepts and design of devices for energy distribution.