This review explores the current and future applications of PVDF-carbon nanomaterial (CNM) systems in energy and sensing. PVDF-CNM composites are used for electromagnetic interference (EMI) shielding, piezoelectrics, and various sensing modalities, including breathing, movement, health monitoring, structural integrity assessments, home monitoring, and seismic acceleration. These materials also excel in biomaterials, such as tactile skin and COVID-preventing facemasks through sunlight sterilization. PVDF-CNMs demonstrate excellence in radar absorption, solar-assisted electricity generation, triboelectric energy harvesting, 3D-4D printing materials, anti-icing covers, anti-stealth materials, and heat-dissipating solids in electronics. The research merges materials chemistry and engineering, yielding materials with multimodal functionalities. The demand for a comprehensive review stems from the need to synthesize insights from fundamental sciences and technologies, capturing the cutting-edge nature of these materials. The scientific goals revolve around elucidating the link between PVDF and CNMs' structural attributes and physico-chemical properties. Two key objectives guide this exploration: (a) shedding light on the conversion from PVDF α-phase to β-phase toward its applicability in EMI shielding, piezoelectrics, sensors, and energy harvesters, and (b) highlighting the simplicity in generating PVDF-CNMs, presenting a vast potential for tuning material features like hydrophilicity, mechanical properties, piezoelectric characteristics, catalytic activity, and bioactivity. PVDF-CNMs are used in various applications, including EMI shielding, piezoelectrics, energy harvesting, triboelectric nanogenerators (TENG), sensors, actuators, transducers, and photodetectors. The phase conversion of PVDF from α to β is crucial for energy-related applications, and CNMs play a significant role in this process. The study discusses the mechanisms of phase conversion, the role of CNMs in improving PVDF properties, and the practical applications of PVDF-CNMs in EMI shielding, energy harvesting, and other fields. The review also highlights the importance of CNMs in enhancing the dielectric, thermal, and electrical properties of PVDF, as well as their role in phase conversion and material performance. The study concludes that PVDF-CNMs have significant potential in various applications, and further research is needed to fully understand their properties and applications.This review explores the current and future applications of PVDF-carbon nanomaterial (CNM) systems in energy and sensing. PVDF-CNM composites are used for electromagnetic interference (EMI) shielding, piezoelectrics, and various sensing modalities, including breathing, movement, health monitoring, structural integrity assessments, home monitoring, and seismic acceleration. These materials also excel in biomaterials, such as tactile skin and COVID-preventing facemasks through sunlight sterilization. PVDF-CNMs demonstrate excellence in radar absorption, solar-assisted electricity generation, triboelectric energy harvesting, 3D-4D printing materials, anti-icing covers, anti-stealth materials, and heat-dissipating solids in electronics. The research merges materials chemistry and engineering, yielding materials with multimodal functionalities. The demand for a comprehensive review stems from the need to synthesize insights from fundamental sciences and technologies, capturing the cutting-edge nature of these materials. The scientific goals revolve around elucidating the link between PVDF and CNMs' structural attributes and physico-chemical properties. Two key objectives guide this exploration: (a) shedding light on the conversion from PVDF α-phase to β-phase toward its applicability in EMI shielding, piezoelectrics, sensors, and energy harvesters, and (b) highlighting the simplicity in generating PVDF-CNMs, presenting a vast potential for tuning material features like hydrophilicity, mechanical properties, piezoelectric characteristics, catalytic activity, and bioactivity. PVDF-CNMs are used in various applications, including EMI shielding, piezoelectrics, energy harvesting, triboelectric nanogenerators (TENG), sensors, actuators, transducers, and photodetectors. The phase conversion of PVDF from α to β is crucial for energy-related applications, and CNMs play a significant role in this process. The study discusses the mechanisms of phase conversion, the role of CNMs in improving PVDF properties, and the practical applications of PVDF-CNMs in EMI shielding, energy harvesting, and other fields. The review also highlights the importance of CNMs in enhancing the dielectric, thermal, and electrical properties of PVDF, as well as their role in phase conversion and material performance. The study concludes that PVDF-CNMs have significant potential in various applications, and further research is needed to fully understand their properties and applications.