Extraction dataset and analysis code for a source-verified quantitative synthesis of > banana-residue-derived supercapacitor electrodes

This deposit contains the complete extraction dataset, analysis code, intermediate results, and figure-generation pipeline supporting a quantitative research synthesis of supercapacitor electrodes derived from banana biomass residues (peel, pseudostem, bract, leaf, and fibre). The dataset comprises 28 electrode conditions extracted from 16 peer-reviewed primary studies, each independently verified as indexed in Scopus or Web of Science, with every reported value confirmed against the publisher's record of the primary source. The unit of analysis is the electrode condition rather than the paper, because individual studies commonly report several conditions; the 28 rows are therefore **not** 28 independent studies, and any re-analysis must account for the clustering of conditions within studies. Recorded fields cover the banana fraction used, conversion route, activation agent and temperature, heteroatom doping, BET surface area, pore volume and pore-size class, electrolyte identity and concentration, electrode configuration, measurement current density or scan rate, and the reported outcomes of specific capacitance, energy density, power density, capacitance retention and cycle count. Two provenance fields record, for every value, whether it was read from the publisher's full text or an open abstract, and the indexing-verification status of the source journal. A separate sheet documents every excluded record with its exclusion reason, including values that were removed during verification because they could not be confirmed in the primary source. The accompanying code reproduces every statistic, table, and figure reported in the associated article from the raw extraction, in ten documented stages: descriptive and bivariate analysis; a leave-one-out machine-learning layer; a robustness suite covering distributional form, rank-based re-estimation, bootstrap intervals, false-discovery-rate correction and variance inflation; PRISMA and effect-size figures; subgroup and influence diagnostics; a conditional meta-analytic apparatus reporting fixed-effect and random-effects pooling, Cochran's Q, I-squared, H-squared, tau-squared, prediction intervals and the Egger and Begg tests; a reproducible six-domain risk-of-bias assessment; measurement-basis stratification with cluster-robust and wild cluster bootstrap inference; a statistical power and feasibility analysis; and an assessment of compliance with existing published reporting guidelines for electrochemical capacitors. Reported specific capacitance is not commensurable across records: values span two- and three-electrode configurations, measurement rates across more than four orders of magnitude, and electrolytes with different stable voltage windows, and no study states the mass basis on which gravimetric quantities are reckoned.本数据集包含完整的提取数据集、分析代码、中间结果与绘图流程，可支撑针对由香蕉生物质残渣（果皮、假茎、苞片、叶片与纤维）制备的超级电容器电极开展的定量研究综合分析。本数据集共纳入从16篇同行评议原创研究中提取的28种电极工况，所有研究均已通过Scopus或Web of Science独立索引验证，且每项报告数值均已与原始文献的出版方记录交叉核对确认。本次分析的单元为电极工况而非单篇论文，因单项研究通常会报告多种工况；因此这28条数据并非对应28项独立研究，任何重新分析均需考虑研究内部工况的聚类效应。所记录的字段涵盖：所用香蕉生物质组分、转化路径、活化剂与活化温度、杂原子掺杂情况、BET比表面积(BET)、孔体积与孔径分级、电解质种类与浓度、电极构型、测量电流密度或扫描速率，以及比电容、能量密度、功率密度、电容保持率与循环次数等报告结果。另有两项溯源字段，用于记录每项数值的来源：是从出版方全文还是开放获取摘要中读取，以及来源期刊的索引验证状态。另有单独工作表记录了所有被排除的记录及其排除原因，包括验证过程中因无法在原始文献中确认而移除的数值。随附代码可从原始提取数据出发，通过10个文档化的可复现步骤复现相关论文中报告的所有统计量、表格与图片：包括描述性与双变量分析；留一法机器学习模块；涵盖分布形式检验、基于秩的重估计、自举法(bootstrap)置信区间、错误发现率校正与方差膨胀因子的稳健性检验套件；PRISMA系统综述与元分析报告规范(PRISMA)流程图及效应量可视化图；亚组与影响诊断分析；条件元分析工具，可报告固定效应合并与随机效应合并、科克伦Q检验、I²统计量、H²统计量、τ²统计量、预测区间以及埃格检验(Egger test)与贝格检验(Begg test)；可复现的六领域偏倚风险评估；基于测量基准的分层分析，结合聚类稳健与野聚类自举推断；统计效力与可行性分析；以及针对电化学电容器现有已发表报告指南的合规性评估。不同记录中的报告比电容不具有可比性：其涵盖两电极与三电极构型，测量速率跨越四个以上数量级，且电解质的稳定电压窗口各不相同；同时无任何研究声明了重量型数值所基于的质量基准。