Research Article
Cationic Quaternized Cellulose Separator Enables Selective Polyiodide Regulation for Stable Lithium-Iodine Batteries
Changyong Song,
Xuejin Li,
Wei Xing*
Issue:
Volume 10, Issue 3, September 2026
Pages:
74-81
Received:
2 June 2026
Accepted:
25 June 2026
Published:
6 August 2026
Abstract: The growing demand of safe and high-energy-density energy storage has spurred renewed interest in rechargeable lithium-iodine (Li-I2) batteries, which are attractive due to their high theoretical capacity (211 mAh g-1 based on iodine) and fast iodine redox reaction kinetics that enable high power output. However, the severe shuttle effect caused by soluble polyiodide intermediates significantly limits the electrochemical reversibility and cycling stability of these batteries. Herein, a cationic quaternized cellulose separator (QCP) is developed to regulate polyiodide transport and interfacial conversion behavior in Li-I2 batteries. Owing to the introduced quaternary ammonium functional groups, the QCP separator exhibits strong electrostatic interactions with negatively charged polyiodide species, effectively inhibiting their diffusion and stabilizing the iodine redox chemistry. Compared with pristine glass fiber (GF) and cellulose separators (CP), the QCP separator demonstrates higher ionic conductivity, increased lithium-ion transference number, reduced interfacial resistance, and improved electrochemical stability. Consequently, Li-I2 batteries assembled with the QCP separator show significantly enhanced cycling stability, superior rate capability, and improved reaction kinetics. Moreover, the QCP separator enables more stable lithium deposition/stripping behavior and enhances interfacial compatibility with the lithium metal anode. This work demonstrates an effective strategy for constructing selective ion-regulating interfaces through cationic cellulose engineering and provides new insights for separator design in advanced halogen-based energy storage systems.
Abstract: The growing demand of safe and high-energy-density energy storage has spurred renewed interest in rechargeable lithium-iodine (Li-I2) batteries, which are attractive due to their high theoretical capacity (211 mAh g-1 based on iodine) and fast iodine redox reaction kinetics that enable high power output. However, the severe shuttle effect caused by...
Show More
Research Article
Volatile Organic Compounds from the Oil and Gas Extraction and Processing: Emission Characteristics, Monitoring Technologies, Control Technologies, and Environmental and Health Impacts
Shuzheng Guo
,
Yiqi Wang,
Pengyu Wang,
Haoxiang Wang,
Xiuqin Sun*
Issue:
Volume 10, Issue 3, September 2026
Pages:
82-92
Received:
10 June 2026
Accepted:
14 July 2026
Published:
13 August 2026
DOI:
10.11648/j.ajese.20261003.12
Downloads:
Views:
Abstract: Volatile organic compounds (VOCs) emitted from the oil and gas extraction and processing industry constitute a major fraction of global anthropogenic VOC releases, with significant implications for tropospheric ozone formation, secondary organic aerosol production, and population-level health risks. This review adopts a source-monitoring-control-impact four-dimensional analytical framework to systematically evaluate the current state of research spanning the full petroleum industrial chain. The analysis reveals a progressive compositional shift in emission profiles, from alkane-dominated fugitive releases in upstream extraction to aromatic- and olefin-rich process emissions in midstream refining, culminating in evaporative losses during downstream storage and transport. A persistent discrepancy exists between bottom-up emission inventories and top-down flux measurements, with fugitive sources systematically underestimated by factors of two to five. The three-tier monitoring hierarchy of offline speciation, online continuous monitoring, and satellite- and UAV-based remote sensing provides complementary spatial and temporal coverage, yet cross-tier data integration remains underdeveloped, limiting the realization of unified emission estimates. Control strategies follow a three-stage hierarchy in which source reduction and process optimization deliver substantially greater emission reduction per unit cost than end-of-pipe treatment alone, although condensation-adsorption-catalytic oxidation remains the mainstream refinery exhaust treatment configuration. Health risk assessments consistently identify benzene-driven incremental lifetime cancer risk exceeding regulatory benchmarks in fenceline communities, while secondary pollution from ozone and aerosol formation extends impacts hundreds of kilometers downwind. To shift from reactive compliance to proactive VOC management, interconnected areas must be prioritized: artificial intelligence powered operational multi-platform emission inventories, unified VOC-greenhouse gas surveillance networks, intelligent closed-loop process control, pilot-scale synergistic abatement technologies, integrated co-control policies that jointly reduce VOCs and methane, and prospective cohort studies with biomarker-based exposure assessment.
Abstract: Volatile organic compounds (VOCs) emitted from the oil and gas extraction and processing industry constitute a major fraction of global anthropogenic VOC releases, with significant implications for tropospheric ozone formation, secondary organic aerosol production, and population-level health risks. This review adopts a source-monitoring-control-im...
Show More
