Title: Advancing Renewable Energy Integration: A Comprehensive Review Of Energy Storage Technologies And Innovative Solutions For Efficient Storage And Grid Integration
Authors: Gabriel Ebiowei Moses, Walson Gift, Awo Theophilus Daminola, Woyingimieye Tracy Marshall
Volume: 9
Issue: 10
Pages: 489-498
Publication Date: 2025/10/28
Abstract:
Recent technical advances have substantially improved performance metrics. Advanced membranes with enhanced ion selectivity and reduced crossover, coupled with optimized electrode materials featuring hierarchical porosity and catalytic surface modifications, have increased round-trip efficiencies to over 80%. Mixed-acid electrolytes have expanded operational voltage windows and improved solubility limits, increasing energy density by 30-40%. Emerging approaches including organic flow chemistries, metal-air hybrid systems, and novel nanofiltration membranes show potential for further advances. These technical characteristics position RFBs (Redox Flow Battery) as an ideal solution for renewable integration applications requiring both rapid response for grid stabilization and extended duration for energy time-shifting, with minimal performance degradation over decades of operation. RFBs demonstrate exceptional circular economy potential. The liquid electrolytes can be completely reclaimed and reprocessed at end-of-life, creating a closed-loop material cycle. For VRFBs (Vanadium Redox Flow Battery), the vanadium electrolyte retains its value and can be reused in new systems after simple filtration and chemical balancing. The mechanical components follow conventional recycling pathways, resulting in overall recyclability exceeding 90%. These characteristics align with sustainability objectives while reducing lifetime environmental impacts and resource depletion associated with grid-scale energy storage deployment.