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
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
Research Article
Analysis and Prevention of Workplace Injuries Using a Situational Model of an Accident
Issue:
Volume 10, Issue 3, September 2026
Pages:
93-99
Received:
4 June 2026
Accepted:
14 July 2026
Published:
26 August 2026
DOI:
10.11648/j.ajese.20261003.13
Downloads:
Views:
Abstract: Known accident models do not provide an explanation for why working in violation of safety regulations does not always result in injury. Theoretical research has been conducted, and a situational accident model has been developed that provides such an explanation. According to this model, the condition for an employee's injury is the presence in the production system of a specific combination of violations of regulatory safety requirements (causes of an accident) and a negative random factor. The combination of violations (causes) is called a "traumatic situation". Since the direction of the random factor can only be detected after the event has occurred, and it is impossible to predict or control it in advance, it is advisable to use an incomplete situational model of an accident that does not take into account the random factor to solve practical problems of injury prevention. An analysis of work-related injuries that occurred in coal mines due to various hazardous production factors (excluding cases of natural health deterioration and criminal incidents) using the obtained model revealed that the exclusion of at least one cause from the injury situation makes it impossible for a person to be injured; the number of violations (causes) can vary from one or more in different situations; and one injury situation can be repeated in different cases of injury. The results of theoretical research have allowed us to formulate a situational approach to managing the safety of an industrial system, which is based on the fact that "prevention of violations of regulatory safety requirements" and "prevention of accidents" are not identical concepts. Prevention of injuries is much simpler, as it does not require the prevention of all safety violations, but rather focuses on preventing the occurrence of at least one cause in a situation where an individual is injured. Within a single production system, injuries occur due to various hazardous production factors and a variety of situations. This variety includes more or fewer injury situations for different production systems, but it is always a finite set. At the same time, the same violations (causes) are repeated in different situations. By preventing one such violation (cause), it is possible to prevent injuries in several different situations. The possibility of preventing accidents by following just one safety requirement is demonstrated in the example of preventing injuries during the repair of belt conveyors in coal mines.
Abstract: Known accident models do not provide an explanation for why working in violation of safety regulations does not always result in injury. Theoretical research has been conducted, and a situational accident model has been developed that provides such an explanation. According to this model, the condition for an employee's injury is the presence in th...
Show More
