Biochar is the carbon-rich material produced from organic feedstock such as agricultural wastes and municipal solid waste in limited oxygen atmosphere and under certain thermal combustion. Due to its high carbon content, high cation exchange capacity, large surface and stability structure, it has been applied in different field of knowledge. In relation to environment analytical chemistry the studies about biochar majorly focus in degradation of contaminants and soil and water remediation. However, due to its excellent electrical conductivity, biochar has been also applied to the manufacture of sensitive, robust, efficient and inexpensive devices applied to supercapacitor-based energy storage and chemically modified electrodes or sensors. Therefore, this review describes about obtention, modification and characterization of biochar as well as the pertinent aspects of electrochemical devises based on biochar and a general discussion about the environmental concern of biochar, challenges and prospects.

生物炭是在有限的氧气气氛中和一定的热燃烧条件下，由有机原料（如农业废料和城市固体废料）生产的富碳材料。由于其高碳含量，高阳离子交换容量，大表面和稳定的结构，已被应用于不同的知识领域。关于环境分析化学，关于生物炭的研究主要集中在污染物的降解以及土壤和水的修复上。然而，由于其优异的导电性，生物炭也已应用于敏感，坚固，高效和廉价的设备的制造，这些设备应用于基于超级电容器的储能器和化学修饰的电极或传感器。因此，这篇评论描述了注意力，