Volume 64, Issue 28 e202505831
Research Article

P-type Cathode Material Design Guided by Material Descriptors for High-Energy Density Sodium Batteries

Weijia Zhang

Weijia Zhang

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Tianjiang Sun

Tianjiang Sun

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Weichao Cheng

Weichao Cheng

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Mengyao Shi

Mengyao Shi

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Min Cheng

Min Cheng

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Qiong Sun

Qiong Sun

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Jianfei Su

Jianfei Su

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Xiulan Li

Xiulan Li

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

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Prof. Zhanliang Tao

Corresponding Author

Prof. Zhanliang Tao

State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Centre, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071 China

E-mail: [email protected]

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First published: 02 May 2025

Graphical Abstract

The material descriptors are first proposed to guide the design and screening of high-energy density p-type organic cathode materials. Triphenylamine and synthesized p-PZA POP proved the rationality of these descriptors. Na||p-PZA POP batteries exhibit a surprisingly high energy density of 524.6 Wh kg−1 at 1 A g−1 and excellent wide-temperature electrochemical performance.

Abstract

P-type organic electrode materials (OEMs) face considerable challenges in constructing high-energy density sodium metal batteries (SMBs) due to their low capacity. To preserve their voltage advantage, developing effective structural design strategies is essential. However, the lack of material descriptors hampers the efficiency of material design and screening. Herein, two material descriptors: the benzene ring/active nitrogen (R/N) ratio and energy density factor (Ef) are established to guide high-energy density SMB design. As proof of concept, triphenylamine (TPA, 3 R/N ratio and 573.6 Ef value) and a porous organic polymer condensation of triiodotriphenylamine and dihydrophenazine named p-PZA POP (1.5 R/N ratio and 907.5 Ef value) are chosen. As a result, the p-PZA POP achieves a high energy density of 524.6 Wh kg−1 at 1 A g−1, nearly double that of TPA (273.3 Wh kg−1). Remarkably, p-PZA POP demonstrates excellent wide-temperature electrochemical performance from 50 °C (166.2 mAh g−1 at 1 A g−1) to −20 °C (141.6 mAh g−1 at 0.1 A g−1). This work establishes a theoretical framework for the rational design and screening of high-performance p-type OEMs through predictive material descriptors.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

Data available on request due to privacy/ethical restrictions.

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