As the global demand for high-energy-density, reliable, and safe energy storage escalates, solid-state batteries (SSBs) have emerged as superior alternatives to conventional batteries by replacing flammable liquid electrolytes with solid alternatives. However, the widespread commercialization of SSBs is currently impeded by formidable challenges, including high fabrication costs, sluggish ion kinetics across solid-solid interfaces, and environmental footprint concerns.
A comprehensive new review article published in ENGINEERING Energy demonstrates how integrating biomass-derived materials offers an innovative pathway to overcome these intrinsic limitations while simultaneously aligning with a circular bioeconomy and global carbon neutrality goals.
Conducted by researchers from Nanjing Forestry University and University of Waterloo, the study critically examines the transformative opportunity of repurposing natural structures for critical battery components. Biomass materials—encompassing organic matter from plants, agricultural residues, marine byproducts, and forestry waste—convert CO₂ and water into structurally sophisticated biopolymers like cellulose, lignin, and chitosan through photosynthesis. These carbon-neutral resources possess naturally hierarchical porosity, aligned channels, and functional groups that are difficult to replicate synthetically, making them ideal for advanced energy storage.
Key Research Highlights:

• Sustainability and Versatility:Biomass-derived materials provide sustainable, structurally tunable, and chemically versatile alternatives for key components in solid-state batteries (SSBs).
• Advanced Carbon Architectures: Bio-derived carbons, produced via methods like pyrolysis and hydrothermal carbonization, enable hierarchical porosity and controllable graphitization. This enhances efficient ion transport, catalytic activity, and mechanical buffering in electrode architectures.
• Enhanced Electrolyte Performance:Biopolymers such as cellulose, lignin, and chitosan serve as functional matrices for solid polymer and gel electrolytes, improving ionic conductivity and interfacial stability. Their intrinsic microstructures also serve as excellent templates for low-tortuosity ceramic electrolytes.
• Mitigation of Critical Challenges: The integration of bio-based binders, separators, and electrolyte additives effectively helps address and mitigate critical battery challenges, including dendrite growth, polysulfide shuttling, and interfacial degradation.
• Future Development and AI Integration: While key challenges remain regarding feedstock variability, impurity control, scalability, and performance trade-offs, the integration of artificial intelligence (AI) offers highly promising new materials design opportunities to accelerate development.

By synthesizing fundamental design principles and the latest progress in the field, this comprehensive review highlights how leveraging nature’s blueprint can accelerate the transition from laboratory concepts to industrially viable components, ultimately driving the development of high-performance, safe, and truly sustainable next-generation SSBs.
DOI：10.1007/s11708-026-1078-9